Mobile Power Product Guide
2nd Edition
MOBILE
POWER
Product Guide
www.maximintegrated.com
Mobile Power Product Guide
Table of Contents
3 Fuel Gauges, Chargers, Battery Monitoring, and USB Management
11 Multifunction PMICs
14 Single-Function Step-Up/Down DC-DCs and LDOs
19 Selector Guide and Tables
2
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Mobile Power Product Guide
Fuel Gauge Reports Battery State of Charge
Accurately and Maximizes Battery Life
ModelGauge™ Algorithm Eliminates Current-Sense Resistor and Other
External Components to Save Cost and Space
• Simple design reduces implementation cost
MAX17048
• Low component count saves board space
• Calibration-free to simplify manufacturing
• Maximize runtime with the industry's lowest supply
current (4μA hibernate, 23μA active)
ONLY ONE
EXTERNAL
COMPONENT
• Low-battery alert extends battery standby time and
reduces software complexities
VDD
ALRT
CELL
SDA
CTG
SCL
GND
QSTRT
SYSTEM
µP
ModelGauge m3 IC Accurately Reports Battery
Capacity from System Side and Maximizes
Battery Life
The MAX17047 and MAX17050 Improve Coulomb Counting to Provide the
Industry’s Best Accuracy
• Load, temperature, and age compensation increase accuracy
• Continuous learning eliminates sudden SOC corrections
SOC
5
75
0
50
-5
25
-10
SUDDEN JUMPS IN SOC
0
10
TIME (hr)
0
20
SOC ERROR
10
100
vs.
ERROR (%)
ERROR (%)
REFERENCE SOC
SOC (%)
SOC ERROR
10
ModelGauge m3 2% Error (MAX17047/MAX17050)
REFERENCE SOC
SOC
100
5
75
0
50
-5
25
-10
0
10
TIME (hr)
20
SOC (%)
Competition’s 7% Error
0
3
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Mobile Power Product Guide
Safety, Security, and Accuracy for 1-Cell Li+
Batteries in a Tiny TDFN
The DS2784 delivers a complete fuel-gauging solution in a tiny 15mm2 footprint. It integrates a stand-alone fuel gauge is a singlecell Li+ protector and a SHA-1-based challenge-response authentication system.
• Li+ safety monitor with programmable thresholds for
overvoltage and overcurrent
• Gain and tempco calibration for using low-cost sense
resistors
• SHA-1 security with 64-bit challenge, 64-bit secret, and
32-bit internal bus
• 32-byte parameter EEPROM, 16-byte user EEPROM
• Precision voltage, temperature, and current measurements
• Tiny, 3mm x 5mm, lead-free, 14-pin TDFN package
• Available capacity reported as percent remaining and
mAh remaining
PK+
1kΩ
1kΩ
DC
CC
PLS
DATA
1kΩ
150Ω
1kΩ
VDD
VIN
DS2784
DQ
150Ω
CP
PIO
SNS
VSS
0.1µF
5.1V
PK-
4
0.1µF
RSENSE
Part
64-Bit
ROM
Interface
Memory
(Bytes)
Fuel
Gauge
Li+ Protector
Package
(mm x mm)
DS2776
✓
1-Wire®
64 EEPROM
2-cell Li+
✓
14-TDFN (3 x 5)
DS2778
✓
2-Wire
64 EEPROM
2-cell Li+
✓
14-TDFN (3 x 5)
DS2780
✓
1-Wire
40 EEPROM
1-cell Li+
—
8-TSSOP, 8-TDFN (3 x 4)
DS2781
✓
1-Wire
40 EEPROM
1- or 2-cell Li+
—
8-TSSOP, 8-TDFN (3 x 4)
DS2782
—
2-Wire
40 EEPROM
1-cell Li+
—
8-TSSOP, 8-TDFN (3 x 4)
DS2784
✓
1-Wire
40 EEPROM
1-cell Li+
✓
14-TDFN (3 x 5)
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Mobile Power Product Guide
USB Charger Detection Enables Optimal
Universal Charging
Imagine a world where only one charger fits all your devices.
With the widespread deployment of USB ports in hotel rooms, planes, and automobiles, the increasing adoption of USB charging
is making that vision a reality. The MAX14656* allows your mobile device to capitalize on USB’s ubiquity, while optimizing to
the charge capability of each type of USB port and even proprietary USB adapters. And it's all done in a manner compliant to the
latest USB charging recommendations**.
UART/AUDIO
MAX14656
5V
DPDT
USB HS
OVP
15kV ESD
VBUS
D+
D-
INT
APPLICATIONS
PROCESSOR
ID
CONTROL
I2C
UNIVERSAL
CHARGER DETECTION
USB ID DETECTION
36V
OVP
DCM/IUSB
MAX8903_/MAX8934_
EXTERNAL CHARGER
BATTERY
*Future product—contact factory for availability.
**USB Battery Charging Specification Revision 1.2
5
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Mobile Power Product Guide
Protect Your Portable Device from Damage
When Simultaneously Using Multiple Power
Supplies
The MAX14606/MAX14607 are high-voltage, high-current overvoltage protectors (OVPs) that feature reverse bias blocking
capability so that two power sources can be safely interfaced simultaneously without damage to either one. In this design, two
integrated back-to-back FETs prevent the voltage applied at the intended output from feeding back into the input. Without this
reverse bias blocking, users are forced to use multiple discrete, space-consuming external components to protect the end equipment.
OTG EN
FROM SYSTEM
USB
MICRO-AB
VBUS
IN
CHARGER IN
OUT
1µF
1µF
MAX14607
VIO
ACOK
EN
CHARGER
OVLO
WIRELESS CHARGING
OR DOCKING STATION
IN
VIO
OUT
1µF
APPLICATIONS
PROCESSOR
MAX14607
EN
ACOK
OVLO
SAFELY CONNECT MULTIPLE POWER SOURCES
Q1
SUITABLE FOR HIGH-POWER SYSTEMS
Q2
3A
IN
GATE DRIVER
Two integrated back-to-back FETS
provide reverse bias blocking
6
OUT
MAX14607
Capable of up to 3A continuous
current through a low, 54mΩ (typ)
internal on-resistance
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Mobile Power Product Guide
Charge Safer with the Industry’s First Dual-Input
Smart Charger with Advanced Temperature
Monitoring
The MAX8934_ automatically adjusts charge current and termination voltage to meet JEITA recommendations for safe
charging*. It integrates all circuitry for charging and switching the load between the battery and the external power.
LDO
Withstands up to
16V input voltage
3.3V ALWAYS-ON
LINEAR
REGULATOR
AC
ADAPTER
UP TO
2A
DC
SYS
Q1
CHARGE
CURRENT
LOAD
CURRENT
SYSTEM
LOAD
System is supported
by adapter even
if battery is dead
Q3
Withstands up to
9V input voltage
USB
UP TO
1.5A
USB
CHARGE
AND
SYS LOAD
SWITCH
Q2
BATT
BATTERY
GND
TEMP
MONITOR
MAX8934_
Adjusts charge current
and voltage to a safe level,
no software needed
4
m
m
-TQFN
28
m x 4m
AUTOMATICALLY SETS MAXIMUM CHARGE RATE
T1
±25mV
4.2
4.1
4.075
±25mV
4.0
0
10
25
T1
1
T2
FAST-CHARGE CURRENT (C)
CHARGE TERMINATION VOLTAGE (V)
AUTOMATICALLY SETS CHARGE TERMINATION VOLTAGE
45
60
85
T2
0.5
0
10
TEMPERATURE (°C)
SAFETY REGION 1
SAFETY REGION 1
SAFETY REGION 2
SAFETY REGION 2
25
45
TEMPERATURE (°C)
60
85
*Follows charging recommendations per JEITA (Japan Electronics and Information Technology Industries Association) Standard, “A Guide to the Safe Use of Secondary Lithium Ion Batteries on
Notebook–Type Personal Computers,” April 20, 2007.
7
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Mobile Power Product Guide
Battery Charger Simplifies USB Charging and
Maximizes User Convenience
USB Charger* Automatically Enumerates with Host or Detects Adapter Type
The MAX77301** is a linear battery charger for Bluetooth® headsets, cell phones, and other portable devices. Built-in USB
enumeration automatically negotiates with the USB host to optimize charging current without processor intervention, thus
eliminating the need for a separate CPU or system software. The MAX77301 includes Smart Power Selector™ circuitry to
allow a portable device to operate with a discharged battery or no battery.
Charge
Enumerate
Saves Space and Cost
Easy Implementation
• Up to 0.9A charging with integrated pass element
• No extra software required for charger detection or
USB enumeration
• Internal power-path switch eliminates an external FET
• Needs no external CPU for charger detection or USB
enumeration
• Packaged in a 2.38mm x 2.38mm WLP
• Charger is stand alone
• Compliant with USB Battery Charging Specification,
Revision 1.1
• I2C interface
• Supports JEITA safe charging
*USB charging protected by U.S. Patent #6,507,172.
**Future product—contact factory for availability.
8
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Mobile Power Product Guide
2A, DC-DC, Li+ Battery Charger Reduces Charge
Time and Heat by 50%
The energy-efficient MAX8903A Li+ battery charger utilizes its Smart Power Selector circuitry to operate with no battery or a
deeply discharged battery when connected to external power. It optimizes limited USB or adapter power and charges the battery
with input power not used by the system. The MAX8903A eliminates the need for external FETs, diodes, and sense resistors to
simplify design and maximize board space.
AC
ADAPTER
OR USB
LX
CS
SYS
DC
CHARGE
CURRENT
CHARGE AND
SYS LOAD
SWITCH
PWM
STEP-DOWN
USB
LOAD
CURRENT
+
SYSTEM
LOAD
50%
faster
BAT
USB
BATTERY
Up to
50% faster
charge rate
-
MAX8903A
GND
MAX8903A
SWITCHING
CHARGER
LINEAR
CHARGER
30%
cooler
Conditions:
VIN: 5V
VOUT: 3.4V
ICHARGE: 800mA
The MAX8903A stays cool while competing
linear chargers heat up.
Feature
Input type (USB/DC)
Input range (V, abs. max)
Competition
MAX8903A
MAX8903A Advantages
Single
Dual/single
Greater design flexibility
4.35 to 5.5, 7
4.15 to 16, 18
No external overvoltage-protection IC needed
UVLO/OVLO
✓/—
✓/✓
Better design robustness
Switching frequency (MHz)
2.25
4
Smaller external components
BAT to SYS (R DSON) (mΩ)
180
50
Longer battery life and less heat
Output current (A, max)
1.2
2
Faster charge time
9
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Mobile Power Product Guide
Charge Fast, Cool, and Safely
The MAX8971 is the industry's smallest 1.55A charger that charges quickly with minimal heat generation. And it charges from a
variety of adapters.
Maximizes Safety
Minimizes Heat
Saves Space
• JEITA-compliant temperature
monitoring
• Temperature regulation
• 3.25MHz switching requires only
2.0mm x 1.6mm inductor
• Withstands transient inputs up to 22V
• Charge safety timer
• No external FETs or sense resistors
• No external FETs or sense resistors
• Switch mode maximizes efficiency
• Tiny 2.44mm x 2.67mm package
• Low path resistance minimizes waste
• Thermal shutdown
• Adaptive input current limiting
-0.3V TO +22V
TOLERANT
4.0V TO 10V OPERATIONAL
DC
C7
4.7µF
6.3V
0402
DC1,
DC2
C1
2.2µF
25V
0603
BYP
BST
C6
0.1µF
0402
BYP
SFO
C3
1µF
6.3V
0402
C4
4.7µF
6.3V
0402
L1, 1µH
2520
LX1,
LX2
PVL
AVL
C2
1µF
25V
0603
PG1,
PG2
GND
MAX8971
CS
VICHG
R1, 47mΩ
0402
I2CIN
BAT+
BAT
µP
C5
2.2µF
6.3V
0603
IRQB
BATSYSTEM
LOAD
THM
RTB
0402
SDA
SCL
R2,
100kΩ
AVL
The Basics of USB Battery
Charging: A Survival Guide
Review the battery-charging survival
guide in Maxim's Application Note 4803
at www.maximintegrated.com/AN4803
for more information.
10
Competitor
60°C
MAX8971
42°C
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Mobile Power Product Guide
TINI Power SoCs Break Through the Integration
Barrier in Portable Platforms
Half the board area in smartphones and tablets is consumed by power, analog, mixed-signal, audio, and passive components.
Maxim’s power SoCs integrate these functions in a single chip to free up real estate for new differentiating features and
higher-capacity batteries.
• Integrate power and system functions into a single chip to
save board space, reduce the bill of materials, and improve
performance
• Built-in microcontroller and memory offload the applications
processor and allow one design to be ported across multiple
platforms
• Highly efficient power-management functions extend
battery life and reduce heat
TINI® Power SoC
USB/AC ADAPTER
Li+
MAIN BATTERY
BATTERY MANAGEMENT
CHARGER WITH OVP AND
Smart Power Selector CIRCUITRY
FUEL GAUGE
BATTERY
BACKUP BATTERY
DISPLAY
PROCESSOR AND
SYSTEM POWER
HIGH-EFFICIENCY
DC-DCs
HIGH-SPEED CORE
DC-DCs WITH DVS
APPLICATIONS/
BASEBAND
PROCESSORS
LOW-NOISE,
HIGH-PSRR LDOs
MOBILE TV
BLUETOOTH/
802.11
BACKLIGHT POWER
TOUCH SCREEN
AND DISPLAY
TACTILE FEEDBACK
TOUCH SCREEN
DIGITAL/CONTROL/GPIO
SERIAL INTERFACE:
I2C/SPI/JTAG
GPIO
KEYBOARD
USB
TOUCH-SCREEN CONTROL
INDICATORS
RTC
LED AND MOTOR DRIVERS
MICROCONTROLLER
MEMORY
CONNECTORS
DDR POWER
CURRENT-LIMIT AND
OVP PROTECTION
VIBRATOR
LPDDR RAM
USB HOST
HDMI®
DETECTOR AND SWITCH
AUDIO
SPEAKER
HEADPHONE,
MIC, SPEAKER
CODEC
CAMERAS
HEADPHONE, MIC,
SPEAKER AMPS
LOW-NOISE POL
REGULATORS
CAMERA FLASH
HEADPHONES
SYSTEM
TEMP SENSOR
AMBIENT-LIGHT
SENSOR
HIGH-RESOLUTION
CAMERA
VGA CAMERA
SENSORS
AMPS AND ADCs
RADIO
MISC. ADC CHANNELS
ENVELOPE-TRACKING
RFPA POWER
3G/4G RADIO
11
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Mobile Power Product Guide
Highly Integrated Power SoC Saves Cost and
PCB Space in Smartphones
Complete Power Management for Applications and
Baseband Processors
Additional Functionality
• Backup-battery charger
• Five highly efficient step-down regulators
• SIM-level translator
• Twenty LDOs
• USB 3-wire transceiver
Dual-Input Li+ Battery Charger
• RTC with alarms and 32kHz buffers
• USB or AC adapter input
• TCXO buffers
• Battery/power switchover
• I2C interface for programming
• 28V input protection
MAX9880A
Audio Subsystem
BASEBAND
µP
CODEC
(2.7mm x 3.5mm)
• Class D mono amplifier
TV
OUTPUT
MOBILE
TV
• DirectDrive® headset amplifier
Bluetooth
MAX8906
• Programmable input mixer
ADC/Touch-Screen Controller
• 12-bit resolution
• Monitors charge current, battery, and
die temperature
Customer Success Story
Powering the Applications and
Baseband Processors
SYSTEM POWER
MANAGEMENT,
AUDIO SUBSYSTEM,
AND TOUCH-SCREEN
INTERFACE
(5.85mm x 5.7mm)
LCD
APPLICATIONS
μP
KEYBOARD
CAMERA
MODULE
HI-SPEED
USB
NOR/
NAND
SD™
CARD
MAX8906 Smartphone
Solution
1005
1005
1005
1005
1608
1608
1608
1608
1005
1005
1005
1005
1608
1608
1005
1005
1005
1005
1608
1608
1005
1005
1608
1608
1005
1005
1608
1608
1608
1608
1608
1608
0603
IC count:
2
Component count:
76
38
IC size (mm2):
Component area (mm2): 117
Estimated BOM:
$1.29
0603
0603
0603
0603
0603
0603
0603
4.2mm DIAMETER
LITHIUM
MANGANESE
3215
0603
1608
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
0603
0603
0603
2520
MAX8906
2016
5.85mm x 5.7mm
2012
1 1005
005 11005
005
1 1005
005 11005
005
11005
005
1005
1005
1005
1005
1005
1005
2012
2012
MAX9880A
2.7mm x 3.5mm
1005
1608 1608 1608 1608 1608
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1608 1608 1608 1608 1608
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1608 1608 1608 1608 1608
PM6650
7mm x 7mm
3216
MAX8660
5mm x 5mm
3216
3216
1
0
0
5
3216
1
0
0
5
1
0
0
5
2828
1608
1608
1608
1608
1608
1608
1608
0603
0603
0603
0603
2828
1005
1005
LTC4078
3mm x 3mm
2828
1005
MAX4736
2mm x 2mm
1
0
0
5
1005
1005
1005
1608
1005
1005
1005
1608
1005
1005
1005
WM9713
7mm x 7mm
1005
MAX1237
3mm x 5mm
1608
1608
1005
1005
1608
1608
1005
1005
2520
1005
1005
APPLICATIONS
PROCESSOR
12
1005
MAX9705B
2mm x 1.5mm
1005
1005
1005
MAX9725B
2mm x 1.5mm
1005
2012
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1005
1
0
6
8
R2015
2mm x 2mm
1608
1
0
0
5
4.2mm DIAMETER
LITHIUM
0603
1608
0603
1
0
0
5
0603
0603
1608
1608
BASEBAND
PROCESSOR
Conventional Smartphone
Solution
2520
IC count:
9
Component count:
121
IC size (mm2):
161
Component area (mm2) 321
Estimated BOM:
$2.11
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Mobile Power Product Guide
Tiny Dual 2A Step-Down Converter with 6 LDOs
The MAX8967* delivers versatile high-current, high-efficiency
power sources in a very small solution footprint.
INPUT
2.6V TO 5.5V
IN1
IN2
AV
Minimizes Current Consumption
• Automatic skip mode at light loads
• Low 44μA no-load quiescent current
1.65V TO 5.5V
SCL
SDA
I2C
Reduces Board Area with Smaller Components
• 4.4MHz step-down switching allows for 1μH inductors
• COUT = 1μF for 150mA and 300mA LDOs
• Remote output capacitor capable
1µH
OUT1
0.6V TO
3.3875V/
2A
1µH
OUT2
0.6V TO
3.3875V/
2A
LX1
PGND1
INA
OUT2
INB
AGND
LX2
MAX8967
PGND2
VIO
1.7V TO 5.5V
• Over 90% efficiency with internal synchronous rectifier
OUT1
LDO1
0.8V TO 3.95V, 150mA
LDO2
0.8V TO 3.95V, 300mA
EN1
EN2
VID1
VID2
LDO3
0.8V TO 3.95V, 150mA
LDO4
0.8V TO 3.95V, 150mA
LDO5
0.8V TO 3.95V, 300mA
IRQB
LDO6
0.8V TO 3.95V, 150mA
Programmable Voltage Options Allow Compatibility
• Step down converters programmable output voltage
(0.6V to 3.3875V) through I2C bus
• LDO programmable output voltage
(0.8V to 3.95V in 50mV steps)
Two Step-Down DC-DCs and Two LDOs
Fit in a Tiny 3mm x 3mm TQFN
INPUT
2.8V TO 5.5V
• Ideal for powering small handheld devices
• Saves space with two DC-DC step-downs,
and two LDOs in a 3mm x 3mm package
LX1
OUT1
OUT1
DOWN TO 0.6V,
UP TO 600mA
Li+
MAX8667
• Low noise, 45μVRMS output noise
• Individual enable pins add flexibility
IN12
EN1
HIGHLY
FLEXIBLE
EN2
EN3
EN4
LX2
OUT2
OUT2
DOWN TO 0.6V,
UP TO 1.2A
IN34
LDO
OUT3
REF
LDO
OUT4
DOWN TO 1.2V,
UP TO 300mA
80% less power loss
and 75% smaller than
discrete solution
*Future product—contact factory for availability.
13
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Mobile Power Product Guide
Tiny PMIC Frees PCB for More Features or
Larger Battery Cell
The MAX8819_ is a complete power solution for portable applications. It integrates a battery charger, step-down converters, and
WLED power. Maxim's Smart Power Selector circuitry enables instant on at adapter plug-in even with a fully discharged battery
and intelligently rations power to both the system and the battery.
USB/AC-DC
ADAPTER
Travel light: integrated
charger eliminates the
need for an additional
charger IC
SYS
DC
Automatically powers from an external source or
battery: Smart Power Selector enables instant-on
in which the system can be powered up
immediately from an adapter, even with a
missing or dead battery
BAT
Li+/Li-Poly
BATTERY
ENABLE SYSTEM
EN123
ENABLE CHARGER
CEN
ENABLE BACKLIGHT
EN4
SYS
OUT1
LX4
OVP4
Cuts cost and size:
integrated high-efficiency
WLED step-up converter
FB4
GND
~88mm2 Solution Area, 1mm Solution Height
11.6mm
0603
0603
1608
2012
1608
4mm x 4mm
14
DIODE
CAP
RES
INDUCTOR
0603
(Form-factor-optimized placement)
IC
7.6mm
1608
1608
1608
2220
1608
MAX8819_
2016
1608
1005
0603
LEGEND
0603
1608
2016
1608
2016
1608
I/O
MAX8819_
OUT2
MEMORY
OUT3
CORE
Maximizes battery life:
three 95% efficient,
2MHz step-down
converters
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Mobile Power Product Guide
DC-DC Step-Down Converter Allows Application
Processors to Run Faster
Industry’s Smallest 2.5A Step-Down Converter with I²C Control
The MAX8952 is a tiny, DC-DC step-down converter with high output current that enables application processors to run at their
maximum clock speed to meet the demands of today’s multimedia applications in handheld devices. Designed to minimize your
solution area, this 2mm x 2mm converter also ensures tight output-voltage accuracy for reliable, power-efficient operation.
Advantages
SYNC
• Dynamic voltage scaling
• 3.2MHz switching for small components
OSC
• 40.5mm2 solution size
CLOCK GEN
IN2
VDD
• Better than 0.5% initial accuracy
I2C INTERFACE
SCL
SDA
LX
PWM LOGIC
IN1
PGND
EN
IN1
VDAC
VOLTAGE
CONTROL, VREF,
BIAS, ETC.
VID0
VID1
AGND
SNS+
SNS-
MAX8952
4MHz SWITCHING
INPUT
2.7V TO 4.9V
IN
OUTPUT
1µH OR 2.2µH 0.6V TO 2.5V
LX
Tiny 1mm x 1.5mm, 500mA Step-Down DC-DC
Allows Flexible Board Layout
Li+
2.2µF
MAX8640Y OUT
MAX8640Z
GND
ON
2.2µF
OR
4.7µF
SHDN
OFF
• Consumes only 24μA
HIGH EFFICIENCY (MAX8640Y)
• Up to 4MHz switching
100
• Low 24μA quiescent current
90
INPUT
2.7V TO 4.9V
4MHz SWITCHING
IN
Li+
OUTPUT
1µH OR 2.2µH 0.6V TO 2.5V
70
60
50
40
30
20
LX
3.6VIN
1.8VOUT
10
2.2µF
GND
ON
APPLICATION
PROCESSOR
EFFICIENCY (%)
80
• Evaluation (EV) kit available to speed designs
MAX8640Y OUT
MAX8640Z
SHDN
2.2µF
OR
4.7µF
BASEBAND
CHIPSET
0
0.1
1
10
100
1000
LOAD (mA)
OFF
15
HIGH EFFICIENCY (MAX8640Y)
100
APPLICAT
PROCESS
BASEBA
CHIPSE
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Mobile Power Product Guide
High Efficiency Over a Wide Load Extends
Battery Life
1.2A Step-Down DC-DC Achieves Up to 95% Efficiency, 16µA IQ
The MAX1556/MAX1557 step-down DC-DC converters save battery life by having the lowest supply current under all operating
conditions, including light load, heavy load, and dropout. These devices provide the fastest load and line-regulation responses of
any parts in their class. Use them to get longer standby and operating times in your PDA, smartphone, digital camera, and other
handheld devices.
• Single part has one adjustable and three fixed outputs
• Analog soft-start with zero overshoot
• Pin-programmable 3.3V, 2.5V, 1.8V, and adjustable
outputs at 1.2A (MAX1556)
• Tiny 10-pin, 3mm x 3mm TDFN package
• Pin-programmable 1.5V, 1.3V, 1.0V, and adjustable
outputs at 600mA (MAX1557)
INDUSTRY’S LOWEST SUPPLY CURRENTS AND FASTEST RESPONSE TIMES
18µA
100%
±3%
200mVP-P
500mA
388µA
40µs
16µA
80%
±2%
COMPETITION
60%
MAXIM INTEGRATED
40%
50mVP-P
100mA
20%
4µs
27µA
0%
QUIESCENT
CURRENT
OUTPUT
VOLTAGE
TOLERANCE
LOAD
TRANSIENT
SOFT-START
INRUSH
CURRENT
IQ IN
DROPOUT
LOAD-STEP
RECOVERY
95% EFFICIENCY AT 1mA
100
EFFICIENCY (%)
INPUT
2.6V TO 5.5V
R1
100Ω
90
LX
MAX1556
IN
C4
0.47µF
VIN = 3.6V, 5.0V
80
VOLTAGE
SELECT
OFF
70
0.1
1
10
100
OUTPUT CURRENT (mA)
1000
C2
22µF
OUT
D2
SS
SHDN
OUTPUT
0.75V TO VIN
1.2A
PGND
D1
ON
VOUT = 3.3V
16
INP
C1
10µF
L1
3.3µH
GND
C3
1000pF
www.maximintegrated.com
Mobile Power Product Guide
Industry's Highest PSRR and Lowest Output
Noise Enable Noise-Sensitive Applications
• 92dB PSRR at 5kHz
INPUT
1.7V TO 5.5V
• 16μVRMS output noise from 10Hz to 100kHz
• 500mA output current
• ±1.5% output accuracy over load, line, and temperature
• 100mV dropout
OUT
EN
BYP
10µF
0.01µF
ON
MAX8902A
SELA
VOUT
SELECTION
SELB
• Operates over the -40°C to +125°C automotive
temperature range
GND
EP
LDO OUTPUT-NOISE SPECTRAL DENSITY
vs. FREQUENCY (MAX8902A)
10µF
OUTS
OFF
• 80μA operating supply current, < 1μA shutdown
supply current
10k
IN
OUTPUT
DOWN TO 0.6V WITH
ONLY 100mV OF DROPOUT
PSRR vs. FREQUENCY (MAX8902A)
0
1k
-30
PSRR (dB)
NOISE DENSITY (nV/√Hz)
-10
-20
100
-40
-50
-60
-70
-80
10
-90
-100
10
100
1k
10k
FREQUENCY (Hz)
100k
1M
10
100
1k
10k
FREQUENCY (Hz)
100k
Ultra-Low Noise LDO Saves Space Without
Compromising Performance
• 78dB PSRR at 1kHz
• Low 40µA ground current
• 120mV dropout at 120mA
2.6mm
1000
1.5mm
0402
1µF
0402
1µF
100
DF
6-µ N
1m
• Adjustable or fixed
output voltage
SMALLEST SOLUTION: 3.9mm2
(MAX8840)
ULTRA-LOW NOISE PEFORMANCE
(MAX8840)
m x .5 m
1
10
0.01
0201
10nF
0.1
1
10
100
1000
m
• Tiny 1mm x 1.5mm x 0.8mm,
6-pin µDFN package
10,000
OUTPUT NOISE DENSITY (nV/√Hz)
Advanced Noise Reduction Results
in Only 11µVRMS of Output Noise:
MAX8840
INDUSTRY’S SMALLEST 11µV LDO
FREQUENCY (kHz)
17
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Mobile Power Product Guide
Tiny 1A Step-Up Converter with Track Mode
L1
1µH
INPUT
2.5V TO 5.5V
LX_
IN
CIN
4.7µF
OUT_
OUTPUT
3.3V TO 5V, 1A
COUT
22µF
MAX8969
EN
TREN
GND_
Safe and Efficient Step-Up Mode
Track Modes
• Up to 1A output current
• Automatic or manual
• Up to 96% efficiency
• 130mΩ on-resistance
• Soft-start controls inrush current
• 1A current limited
• True Shutdown circuitry
• Fast transition into boost
• Low 1μA shutdown current
Applications
Compact Layout
• Add-on for OTG boost
• 3mm x 3.5mm solution size
• Low cutoff voltage battery assist
• 1.25mm x 1.25mm WLP package
1A Step-Up Converter Saves Space and Power
Delivers Industry's Best-in-Class Efficiency
Saves Space
High Performance and Safety
• 2MHz PWM switching frequency for small external
components
• Up to 97% efficiency and low 30μA IQ
• True Shutdown™ circuitry eliminates need for external load
switch
• Compact, 3mm x 3mm, 10-pin TDFN package
• Overvoltage and short-circuit protection, as well as thermal
shutdown
• Controlled current in soft-start
• Low-noise, fixed-frequency operation (FPWM mode)
EFFICIENCY vs. LOAD CURRENT,
VOUT = 5V
100
INPUT VOLTAGE
1.2V TO 5.5V
90
EFFICIENCY (%)
80
70
60
50
40
SKIP
VIN = 3.6V,
3V,
2.4V,
1.8V,
1.5V
SKIP
VIN = 4.2V
30
20
10
FPWM
VIN = 4.2V,
3.6V,
3V,
2.4V,
1.8V,
1.5V
10
100
OUTPUT CURRENT (mA)
18
97%
efficiency
ON
ON
OFF
LX
MAX8815A OUTS
FPWM
FB
SKIPB
Forced PWM
or skip mode
1
BATT
POUT
SKIP
0
0.1
True Shutdown
circuitry eliminates
load switch
1000
GND
OUTPUT VOLTAGE
3.3V TO 5V
www.maximintegrated.com
Mobile Power Product Guide
Chargers
Part
ICHG
(A, max)
Protected VIN
(V, max)
EV Kit
Inputs
Features
Package
MAX8606
1
14
Yes
1
Smart Power Selector circuitry,
safety timer, thermal regulation
14-TDFN
MAX8671X
1
14
Yes
2
Smart Power Selector
circuitry, safety timer, thermal
regulation, part of a PMIC
40-QFN
MAX8677A
1.5
16
Yes
2
Smart Power Selector circuitry,
safety timer, thermal regulation
24-TQFN
MAX8804_
0.7
28
No
2
28V withstand, small size
8-TDFN
MAX8808_
1
15
Yes
1
1A charging, tiny package
8-TDFN
MAX8814
0.6
28
Yes
1
28V withstand, smart autoboot
assistant
8-TDFN
MAX8819_
1
5.5
Yes
1
Smart Power Selector
circuitry, safety timer, thermal
regulation, part of a PMIC
28-TQFN
MAX8895_
1.85
14
Yes
1
Smart Power Selector circuitry,
auto-enumeration and charger
type detect
25-WLP
MAX8900_
1.2
22
Yes
1
Safe JEITA charging
30-WLP
MAX8971
1.55
22
Yes
1
Smallest 1.55A SMPS charger
with JEITA
20-WLP
MAX8903_
2
20
Yes
2
Smart Power Selector circuitry,
safety timer, switch mode for
cool and fast charging
28-QFN
MAX8922L
1
30
No
1
30V withstand, GSM test
mode
10-TDFN
MAX8934_
1.5
14
Yes
2
Smart Power Selector circuitry,
safety timer, safe JEITA
charging
32-QFN
1
Smart Power Selector, autoenumeration and charger
detect, JEITA charge control,
I2C programmable
25-WLP
MAX77301*
0.9
14
Yes
*Future product—contact factory for availability.
19
www.maximintegrated.com
Mobile Power Product Guide
Step-Up/Down Converter
Part
Description
VIN
(V, min)
High-efficiency,
seamless transition,
MAX8625A
step-up/down
DC-DC converter
2.5
VIN
(V, max)
5.5
VOUT
VOUT
(V, min) (V, max)
1.25
Output
Oper.
IOUT
Adjust
Freq.
(A, max)
Method
(kHz)
Preset or
resistor
4
0.8A
Features
Current limiting, fixedfrequency PWM, internal
1000
power FETs, synchronous
rectifier
Package
14-TDFN-EP
Step-Up Converters
VIN
(V, min)
Oper.
Freq.
(kHz)
Features
Package
2
480
Current limiting, external
sync., fixed-frequency
PWM, internal power
FETs
16-QSOP,
24-TQFN
1
500
Current limiting, external
power FETs, external sync.,
fixed-frequency PWM
10-µMAX®
1
400
Current limiting, external
sync., fixed-frequency
PWM, internal power FETs,
low-battery/POK output,
synchronous rectifier
6-QSOP
0.15
1
—
Current limiting, internal
power FETs,
synchronous rectifier
5-TSOT
5.5
1.5
1
1000
Current limiting; fixedfrequency PWM, internal
power FETs,
synchronous rectifier
16-QSOP/
TSSOP-EP
1.25
5
0.8
1
1000
Fixed-frequency PWM,
internal power FETs,
synchronous rectifier
16-QSOP/
TSSOP-EP
5.5
1.23
5.5
0.25
1
—
Current limiting, internal
power FETs, reset output,
synchronous rectifier
6-SOT/
TDFN-EP
5.5
2.7
28
0.01
1
—
Current limiting, internal
power FETs,
True Shutdown circuitry
6-µDFN/
SOT
1000
Current limiting, fixedfrequency PWM, internal
power FETs,
low-battery/POK output,
True Shutdown circuitry
14-TDFN-EP
2000
Current limiting, fixedfrequency PWM, internal
power FETs, sync. rectifier,
True Shutdown circuitry
10-TDFN-EP
3000
Current limit, fixed
frequency/PWM, internal
power FETs, synchronous
rectifier, True Shutdown
circuitry, track mode
9-WLP
VOUT
IOUT
VIN
VOUT
DC-DC
(V, max) (V, min) (V, max) (A, max) Outputs
Part
Description
MAX685
Dual-output (positive
and negative), DC-DC
converter for CCD
and LCD
2.7
5.5
2.7
24
—
MAX668
28V, constantfrequency, currentmode PWM controller
3
28
3
100
6
MAX1705
1-to-3-cell, 1A, lownoise, step-up DC-DC
converter with linear
regulator
0.7
5.5
2.5
5.5
0.8
MAX1722
1.5µA IQ, step-up
DC-DC converter in thin
5-pin SOT23
0.8
5.5
2
5.5
MAX1763
1.5A, low-noise,
1MHz, step-up DC-DC
converter
0.7
5.5
2.5
MAX1765
800mA, low-noise, stepup DC-DC converter with
500mA linear regulator
1
5.5
200mA step-up
MAX8569 converter in 6-pin
SOT23 and TDFN
1.5
High-efficiency LCD
MAX8570 boost with True
Shutdown circuitry
2.7
Dual-output (positive
and negative) DC-DC
MAX8614_
converters for CCD
and AMOLED
1A, 97% efficiency, 30µA
quiescent current,
MAX8815A step-up converter with
True Shutdown circuitry
MAX8969
20
1A simple step-up
converter with True
Shutdown circuitry
and track mode
2.7
1.2
2.5
5.5
5.5
5.5
-15
1.265
3
7.5
5.5
5
0.125
1
1
2
1
1
www.maximintegrated.com
Mobile Power Product Guide
Step-Down Converters
Part
MAX1556
Description
16μA IQ, 1.2A PWM
step-down DC-DC
converter
500mA, 4MHz
synchronousMAX8640Z rectified step-down
DC-DC converter
in SC70
MAX8649
1.8A step-down
regulator with
differential remote
sense in 2mm x 2mm
WLP
1.2A PWM stepdown converter in
MAX8836Z
2mm x 2mm WLP/
UCSP for PA Power
VIN
(V, min)
2.6
IOUT
VOUT
VIN
VOUT
DC-DC
(V, max) (V, min) (V, max) (A, max) Outputs
5.5
2.7
5.5
2.5
5.5
2.7
5.5
0.75
1.1
0.75
3.1
5.5
1.2
1.8
0.5
1.38
1.8
3.4
1.2
Oper.
Freq.
(kHz)
Features
Package
1
Adjustable frequency, current
limit, fixed frequency/
1000
PWM, internal power FETs,
synchronous rectifier
10-TDFN-EP
1
Adjustable frequency, current
limit, fixed frequency/
4000
PWM, internal power FETs,
synchronous rectifier
6-μDFN,
6-SC70
1
Current limit, external
sync, fixed frequency/
3250
PWM, internal power FETs,
synchronous rectifier
16-WLP
1
Current limit, fixed
frequency/PWM,
internal power FETs,
synchronous rectifier
16-UCSP ™ ,
16-WLP
500
MAX8896
Dual PWM stepdown converter in a
2mm x 2mm package
for WCDMA PA and
RF power
2.7
5.5
0.5
5
0.7
2
Current limit, fixed
frequency/PWM, internal
2000
Pwr. FETs ,synchronous
rectifier
MAX8952
2.5A step-down
regulator with
differential remote
sense in 2mm x
2mm WLP
2.5
5.5
0.77
1.4
2.5
1
3250
Current limit, external sync,
fixed frequency/PWM,
internal power FETs, output
OVP, synchronous rectifier
16-UCSP
16-WLP
Charge Pumps
Part
Description
VIN
VIN
(V, min) (V, max)
VOUT
(V)
IOUT
ICC
(A, max) (mA, max)
Oper.
Freq.
(kHz)
Topology
Package
20mA charge-pump
voltage converter
1.5
10
+2VIN ,
-VIN
0.02
0.175
10
Doubler, inverter,
unregulated
8-μMAX/CDIP(N)/
PDIP(N)/SOIC(N)/
TO99
MAX881R
Low-noise bias supply
in μMAX with POK for
GaAsFET PA
2.5
5.5
-VIN - 0.6
0.01
0.95
100
Inverter, regulated
10-μMAX
MAX1759
100mA buck/boost
regulating charge pump
in μMAX
1.6
5.5
2.5 to 5.5
adj. or
0.1
0.18
1500
Regulated
10-μMAX
ICL7660
3.3 fixed
21
www.maximintegrated.com
Mobile Power Product Guide
Converters for WLED Power
VIN
(V,
max)
Oper.
Freq.
(kHz)
2.7
5.5
—
Internal power switch(es), openLED protection, shutdown,
soft-start
8-TDFN-EP
25
2.7
5.5
1000
Internal power switch(es), LED
temperature derating, open LED
protection, shutdown, soft-start
24-TQFN
Analog,
PWM
20
2.6
5.5
1000
Internal power switch(es),
open-LED protection, shutdown,
soft-start
12-TQFN
50
Analog
350
2.7
5.5
—
Open-LED protection, shutdown,
soft-start
10-μMAX
Inductor based
9
Analog,
PWM
25
2.6
6
1000
Internal power switch(es), LED
temperature derating, open-LED
protection, shutdown, soft-start
8-TDFN-EP
MAX8630_
Charge pump
5
PWM,
serial
pulse
25
2.7
5.5
1000
Internal power switch(es), LED
temperature derating, open-LED
protection, shutdown, soft-start
14-TDFN-EP
MAX8647
Charge pump
6
I2C serial
24
2.7
5.5
1000
Internal power switch(es), LED
temperature derating, open-LED
protection, shutdown, soft-start
16-TQFN
MAX8678
Charge pump
4
Serial
pulse
24
2.7
5.5
1000
Internal power switch(es), openLED protection, shutdown,
soft-start
16-TQFN
MAX8821
Charge Pump
6
Digital,
I2C serial
25
2.7
5.5
1000
Internal power switch(es), LED
temperature derating, open LED
protection, shutdown
28-TQFN
MAX8822
Charge pump
4
Digital
24
2.7
5.5
1000
Internal power switch(es), openLED protection, shutdown,
soft-start
16-TQFN
MAX8830
Inductor based
5
I2C serial
200
2.7
5.5
1000
Camera flash, internal power
switch(es), open LED protection,
shutdown, soft-start
16-WLP
MAX8831
Inductor based
45
Digital,
serial
25
2.7
5.5
2000
Internal power switch(es), openLED protection, shutdown, softstart
16-WLP
MAX8901_
Inductor based
6
PWM,
serial
pulse
25
2.6
5.5
750
Internal power switch(es), openLED protection, shutdown,
soft-start
8-TDFN-EP
MAX8930
Charge pump, linear
current regulator
12
I2C serial
25
2.7
5.5
4000
Part
Topology
LEDs
(max)
Dimming
Control
MAX1554
Inductor based
10
Analog,
PWM
20
MAX1579
Inductor based
8
Analog,
PWM
MAX1582
Inductor based
7
MAX1698
Inductor based
MAX8596X
22
I2C
ILED (mA,
VIN
(V, min)
max)
Features
Internal power switch(es),
shutdown, soft-start
Package
49-WLP
www.maximintegrated.com
Mobile Power Product Guide
Converters for WLED Flash
VIN
(V,
max)
Oper.
Freq.
(kHz)
2.7
5.5
1000
Camera flash, internal power
switch(es), open-LED protection,
shutdown, soft-start
8-TDFN-EP
300
2.6
5.5
1000
Camera flash, internal power
switch(es), open-LED protection,
shutdown, soft-start
10-TDFN-EP
100
2.7
5.5
1000
Camera flash, internal power
switch(es), LED temperature
derating, open LED protection,
shutdown, soft-start
24-TQFN
14-TDFN-EP
Part
Topology
LEDs
(max)
Dimming
Control
MAX1577_
Charge pump
40
Digital
1200
MAX1583
Inductor based
5
Analog,
digital
MAX1707
Charge pump
11
Digital,
I2C serial
MAX8607
Inductor based, linear
current regulator
MAX8645_
MAX8834_
Charge pump
Inductor based
ILED
VIN
(mA, max) (V, min)
Features
Package
1
Digital
1500
2.7
5.5
1000
Camera flash, internal power
switch(es), LED temperature
derating, open-LED protection,
shutdown, soft-start
8
Analog,
digital,
PWM,
serial pulse
200
2.7
5.5
1000
Camera flash, internal power
switch(es), LED temperature derating,
shutdown, soft-start
3
Digital,
I2C serial
5.5
Two flash/movie LED current
regulators, GSM blanking,
4000
MAXFLASH protection to prevent
system lockups
1500
2.5
28-TQFN
20-WLP
LDOs for Baseband and RF Chipsets
VIN
VIN
(V, min) (V, max)
VOUT
(V)
VDROPOUT
Output
at Rated Rated
ICC
Voltage
ILOAD (µA, max)
I LOAD
Noise
(V, typ)
(µVRMS , typ)
Part
Description
MAX1589A
Low-input-voltage, 500mA LDO
regulator with reset in SOT and
TDFN
1.62
3.6
0.75, 1, 1.3,
1.5, 1.8, 2.5, 3
0.175
500
140
86
66-TDFN-EP/
TSOT
MAX1818
500mA, low-dropout linear
regulator with output current
limiting and thermal protection
in SOT23
2.5
5.5
1.5, 1.8, 2, 2.5, 3.3,
5, or adj
5.5
500
250
115
6-SOT23
MAX8510
Ultra low-noise, high-PSRR, lowdropout, 120mA linear regulator
in SC70
2
6
1.6, 1.8, 2.5, 2.7, 2.8,
2.85, 3, 3.3, 4.5
0.12
120
90
11
MAX8840
Ultra-low-noise, high-PSRR,
low-dropout, 150mA linear
regulator in μDFN
2
6
1.5, 1.6, 1.8, 1.9, 2.5,
2.6, 2.7, 2.8, 2.85,
2.9, 3, 3.1, 3.3, 4.5
0.17
150
90
11
6-μDFN/
UTLGA
MAX8868
Low-noise, low-dropout, 150mA
linear regulator in SOT23 with
auto-discharge
2.5
5.5
2.5, 2.8, 2.84, 3,
3.15, 3.3, 3.6, 5
0.16
150
180
20
5-SOT/
TSOT
MAX8902_
Low-noise 500mA LDO
regulator in 2mm x 2mm TDFN
1.7
5.5
1.5, 1.8, 2, 2.5, 3, 3.1,
3.3, or adj
0.05
500
120
16
8-TDFN-EP
Package
5-SC70,
8-TDFN-EP
23
Mobile Power Product Guide
The Bluetooth word mark is a registered trademark owned by Bluetooth SIG, Inc. and any use of such marks by Maxim is under license.
HDMI is a registered trademark of HDMI Licensing LLC.
ModelGauge, Smart Power Selector, True Shutdown, and UCSP are trademarks and 1-Wire, DirectDrive, TINI, and μMAX are registered trademarks of Maxim Integrated Products, Inc.
SD is a trademark of the SD Card Association.
Contact Maxim Direct at 1.800.629.4642 or for more information, visit www.maximintegrated.com.
© 2012 Maxim Integrated. All rights reserved. The Maxim logo and Maxim Integrated are trademarks of Maxim Integrated Products, Inc. in the United States
and other jurisdictions throughout the world. All other company names may be trade names or trademarks of their respective owners.
Rev. 0; November 2012
www.maximintegrated.com
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