AUR9801D Description Features Pin Assignments Applications

AUR9801D Description Features Pin Assignments Applications
AUR9801D
LI-ION/LI POLYMER BATTERY CHARGER
Description
Pin Assignments
The AUR9801D is a highly-integrated battery charger for single-cell
Li-ion or Li-polymer batteries capable of operating with an input
voltage reached 2.5V. It is a complete charger device designed to
work with an USB port or 5V output AC adapter.
(Top View)
Pin 1 Mark
The AUR9801D operates with CC (constant current) mode and CV
(constant voltage) mode profiles. A low-current preconditioning
charge mode is also provided as a trickle charging operation. The
charge current is programmable up to 1A with an external resistor or
a logic input. The charge voltage is 0.6% accurate over the full
application range.
When operating with a current-limited adapter, the charger minimizes
the thermal dissipation with pulsed operations to prevent overheat
conditions that is commonly occurred with conventional linear
chargers. The AUR9801D reduces charge current for thermal foldback to ensure product safe operation. The charger automatically recharges the battery when the battery voltage drops below a recharge
threshold. The chip includes a safety timer for setting the fast charge
time limit in case of charging a dead battery.
Additional features include preconditioning of an over-discharged
battery and charging the battery in a safe temperature range with an
NTC thermistor interface. The thermally enhanced DFN package is
offered for space limited handheld applications.
VBAT
VIN
1
10
FAULT
2
9
TEMP
STATUS
3
8
IREF
TIME
4
7
V2P8
GND
5
6
EN
WDFN-3×3-10
Applications

PDAs, Cell Phones and Smart Phones

Digital Camera, MP3 and Handheld Gamming

Portable Instruments including Medical Handhelds

Self-Charging Battery Packs

Stand-Alone Chargers or USB Port Chargers
The AUR9801D is available in WDFN-3X3-10 package.
Features

Complete Charger for Single-Cell Li-ion Batteries

Charges from either AC Adapter or USB Port

Integrated Power Pass Device with Current Sensing

No External Blocking Diode Required

Pre-charge Condition with Safety Timing

Charger Voltage Accuracy: 0.6%

Programmable Current Limit up to 1A

Sleep Mode for Power Saving

Charge Current Thermal Fold-back

NTC Thermistor Interface for Battery Temperature Monitor

Stand-Alone or Integrated Charger

Ambient Temperature Range: -40°C to +85°C

Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2)

Halogen and Antimony Free. “Green” Device (Note 3)
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
AUR9801D
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AUR9801D
Typical Applications Circuit
VIN
5V
1
VIN
VBAT
10
1µF
1k
1µF
1k
RPU
AUR9801D
LED1
Li Battery
TEMP 9
LED2
3
2
4
5
15nF
V2P8
7
EN
6
STATUS
FAULT
TIME
GND
IREF
Rt
8
1µF
100k
Figure 1.Typical Application of AUR9801D
1A
ADP
P_MOS
1A
USB
1
VIN
VBAT
680
680
10
P_MOS
4.7K
loading
AUR9801D
1μF
16V
BAT
4.7K
4
TIME
GND
15nF
5
IREF
8
200K
N_MOS
150K
200K  150K
 85.7 K
200K  150K
IREF≈940mA
Figure 2. External Power Path Application Circuit
AUR9801D
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AUR9801D
Pin Descriptions
Pin Number
Pin Name
Pin Type
Pin Function
1
VIN
POWER
2
FAULT
O
Active-low, open-drain output, capable of sinking 5mA current
3
STATUS
O
Open-drain pin to show charging and Inhibit states, capable of sinking 5mA current
4
TIME
I
Timing capacitor pin for connecting a capacitor to set internal clocking and charger time
reference
5
GND
GROUND
6
EN
I
Chip enable control, high to activate the chip with internal 400kΩ pull-up resistor
7
V2P8
O
2.8V reference voltage output, capable of driving up to 2mA
8
IREF
I
A resistor can be connected at this pin to set the charge current
9
TEMP
I
Battery Temperature input for NTC thermistor input, can be used for battery removal
detection
10
VBAT
O
Connection to the battery positive node
Charger input supply voltage
Ground pin
Functional Block Diagram
VIN
V2P8
IREF
1
10
Current
Sense
7
VBAT
Voltage/
Current
Reference
8
Temp
Control
Under
Temp
TEMP
TIME
GND
NTC
Block
9
4
OSC
Over
Temp
Batt
Removal
Charger
Control
Document number: DS39016 Rev. 1 - 2
3
FAULT
2
Counter
6
5
AUR9801D
STATUS
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STATUS
FAULT
EN
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© Diodes Incorporated
AUR9801D
Absolute Maximum Ratings (Note 4)
Symbol
Parameter
Unit
VIN
Supply Input Voltage
-0.3 to 6.5
V
VEN
Enable Input Voltage
-0.3 to VIN+0.3
V
VBAT
Output Voltage
-0.3 to VIN+0.3
V
-0.3 to VIN+0.3
V
—
Other Pin Voltage
(FAULT, STATUS, TIME, TEMP, IREF, V2P8)
θJA
Thermal Resistance (Simulation)
45.13
°C/W
TJ
Operating Junction Temperature
+160
°C
-65 to +150
°C
TSTG
Note 4:
Value
Storage Temperature
Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Conditions” is not implied.
Exposure to “Absolute Maximum Ratings” for extended periods may affect device reliability.
Recommended Operating Conditions
Symbol
Parameter
Min
Max
Unit
VIN
Supply Voltage
4.6
5.5
V
TA
Ambient Temperature Range
-40
+85
°C
AUR9801D
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AUR9801D
Electrical Characteristics
(VIN=5V and TA=+25°C for the typical values. The maximum and minimum values are over -40°C to
+85°C ambient temperature with a supply voltage in the range of 4.6V to 5.5V, unless otherwise noted.)
Symbol
Parameter
Test Condition
Min
Typ
Max
Unit
Power-on Reset
—
VIN Rising Voltage
—
3.2
3.6
3.9
V
—
VIN Falling Voltage
—
2.25
2.5
2.7
V
ISTANDBY
VBAT Pin Sink Current
VIN floating or EN=LOW
—
—
3.3
μA
VBAT floating and EN pulled low
—
—
150
μA
IIN
VIN Pin Supply Current
VBAT and EN floating
—
—
1
mA
VBAT=4.2V,
IBAT= 20mA,
use STATUS pin
45
80
100
mV
4.175
4.2
4.225
V
—
175
—
mV
760
800
840
mA
Standby Current
VIN-VBAT Offset Voltage
VOS
Offset Voltage
Voltage Regulation
VBAT
Output Voltage
—
Dropout Voltage
Tested at 50mA load, 5V input, and
+25°C
VBAT=4.0V,
charge current = 0.35A
Charge Current
ICHG
ITRICKLE
IMIN
Constant Charge Current
RIREF=100kΩ,
VBAT=3.0V to 4.0V
Trickle Charge Current
RIREF=100kΩ, VBAT=2.5V
—
120
—
mA
End-of-Charge Threshold
RIREF=100kΩ
70
80
90
mA
V2P8 Pin Output Voltage
Load current less than 1mA
2.8
2.9
3.0
V
Recharge Threshold
—
3.97
4.05
4.13
V
Recharge Threshold Hysteresis
—
—
50
—
mV
Trickle Threshold Voltage
—
2.7
2.8
2.9
V
Trickle Threshold Hysteresis
—
50
100
150
mV
V2P8 Pin Output
V2P8
Recharge Threshold
VRECHG
VRECHG-HYS
Trickle Charge Threshold
VMIN
VMINHYS
AUR9801D
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AUR9801D
Electrical Characteristics
(Cont. VIN=5V and TA=+25°C for the typical values. The maximum and minimum values are over -40°C
to +85°C ambient temperature with a supply voltage in the range of 4.6V to 5.5V, unless otherwise noted.)
Symbol
Parameter
Test Condition
Min
Typ
Max
Unit
Temperature Monitoring
VTMAX
—
VTMIN
—
TFOLD
High Voltage Threshold
V2P8=3.0V
—
2.0
—
V
High Voltage Threshold Hysteresis
V2P8=3.0V
—
1.9
—
V
Low Voltage Threshold
V2P8=3.0V
—
1
—
V
Low Voltage Threshold Hysteresis
V2P8=3.0V
—
1.1
—
V
Thermal Foldback Threshold
—
—
+107
—
°C
Oscillation Frequency
CTIME= 15nF
305
333
370
Hz
Oscillator
fOSC
Logic Input and Output
—
EN Pin Logic Input High
—
1.5
—
—
V
—
EN Pin Logic Input Low
—
—
—
0.8
V
—
EN Pin Internal Pull-Up
—
—
880
—
kΩ
—
STATUS, FAULT Output Voltage
10mA Current
—
—
0.8
V
AUR9801D
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AUR9801D
Performance Characteristics (VIN=5V, TA=+25°C, RIREF=100kΩ, VBAT=3.7V, unless otherwise noted.)
Charge Output Voltage vs. Charge Current
Charge Output Voltage vs. Input Voltage
4.204
4.30
4.25
Charge Output Voltage (V)
Charge Output Voltage (V)
4.200
4.196
4.192
4.20
4.15
4.10
4.188
4.184
0.0
Charge Current=50mA
4.05
0.2
0.4
0.6
0.8
4.00
4.4
1.0
4.6
4.8
5.0
5.2
5.4
5.6
5.8
6.0
Input Voltage (V)
Charge Current (A)
Charge Current vs. Charge Output Voltage
Charge Current vs. Input Voltage
1.0
1.00
0.95
0.9
Charge Current (A)
Charge Current (A)
0.90
0.85
0.80
VIN = 4.6V
0.75
0.8
0.7
0.6
0.70
0.5
0.65
VIN = 5V
0.60
3.0
3.2
3.4
3.6
3.8
4.0
0.4
4.0
4.2
4.3
4.6
Charge Output Voltage (V)
5.2
5.5
5.8
6.1
V2P8 Output Voltage vs. V2P8 Load Current
2.90
2.90
2.88
2.88
V2P8 Output Voltage (V)
V2P8 Output Voltage (V)
V2P8 Output Voltage vs. Input Voltage
2.86
2.84
2.82
2.80
3.5
4.9
Input Voltage (V)
2.86
2.84
2.82
4.0
4.5
5.0
5.5
6.0
6.5
Document number: DS39016 Rev. 1 - 2
0
2
4
6
8
10
V2P8 Load Current (mA)
Input Voltage (V)
AUR9801D
2.80
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AUR9801D
Description of Charge Operation
The AUR9801D initiates a charger operation when attached with a voltage source device or adaptor. Figure 3 shows a typical charge profile when
the chip operates as a conventional linear charger with a constant voltage source. The charging current is set by an external resistor up to 1A. The
target charging voltage is 0.6% accurate over the specified range.
The charger IC resets internal operational circuits when internal Power-On-Reset (POR) signal becomes valid. V2P8 presents a voltage reference
output source capable of driving 2mA current after POR. Other indication output pins are STATUS and FAULT. The STATUS is active low as an
open-drain type to indicate a charging cycle and valid till the End-Off-Charge (EOC). The FAULT output signal becomes low to signal any occurred
fault conditions such as a charging time fault, battery temperature fault or when the battery is detached.
When charge with a current-limited adapter, AUR9801D should be programmed with I REF over the upper limit of ILIM. A typical charge profile is
displayed in Figure 4 for minimizing power dissipation during CC mode. The worst power dissipation is often at the start of CV mode, although
thermal fold-back conditions could still occur in this application case.
Charge Current= ICHG
Current
Voltage
VBAT=4.2V
VBAT=4.05V
VBAT=2.8V
Status
Charge Current = 0.1xICHG
Timer Timeout
Time
Pre-charge
Constant Current
Charge
Constant Voltage
Charge
Standby
Mode
Re-charge
Process
Figure 3. A Typical Charge Profile as a Conventional Linear Charger
AUR9801D
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AUR9801D
Description of Charge Operation (Cont.)
Timeout
VBAT
VIN
Charge Current
CC Charge
OFF
CV Charge
Standby
Pre-charge
Figure 4. A Typical Charge Profile with a Current-limited Adapter
AUR9801D
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AUR9801D
Operation Overview
For linear charging case, the AUR9801D performs either constant current (CC) and constant voltage (CV) profiles. The charging current is set by
an external resistor up to 1A for package options. The target charging voltage is 0.6% accurate over the specified range. AUR9801D enters a
trickle mode for preconditioning operation each time when a charging cycle starts till that the minimum charging voltage is reached and verified in
15 clock cycles.
A thermal-foldback function offers thermal protection during linear charging operations. When the internal temperature of AUR9801D goes up
above +100°C, the charger automatically reduces the charging current. TEMP pin is examined for charging temperature during the charging
operation. The temperature range is determined with an external NTC thermistor. The NTC need have 4:1 for RCOLD to RHOT, once user choose a
NTC, the temperature range will be fixed also, then we will have
3.0  R COLD
 2.0
R PU  R COLD
…….……. (1)
3.0  R HOT
 1.0
R PU  R HOT
…….……. (2)
Using these two formulas, we can get RPU, and also can get RCOLD and RHOT refer to the NTC table (resistance-temperature table)
The AUR9801D provides a TIMEOUT limit to prevent charging a dead battery for extensive time. Recharging is automatically started when
battery voltage drops to the recharging threshold point.
The AUR9801D enters the shutdown mode in case no voltage adapter is attached.
STATUS
FAULT
Condition
High
High
Power-down, charging is suspended or interrupted
Low
High
Charging
High
Low
Bad battery (Safety timer expired)
Charge current setting
 105 
 Where RIREF in kΩ
ICHG  0.8  
 R IREF 
Charge timer setting
Time  14 
CTIME
1nF
Where Time in Minutes
AUR9801D
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AUR9801D
Flow Chart
Power on & EN
Battery Exist?
No
Yes
Pre-charge, timer
start
VBAT >2.8V for 16
clocks ?
No
1/8 Timeout ?
No
Yes
Yes
Fault
No
Fast charge
VBAT > 4.2V ?
Yes
Timeout ?
No
Yes
No
Yes
Constant voltage
Charge mode
ICHG < IMIN ?
No
Timeout ?
Yes
Timeout?
No
Yes
Yes
AUR9801D
Document number: DS39016 Rev. 1 - 2
Standby mode,
Charger off
VBAT < 4.0V ?
No
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AUR9801D
Ordering Information
AUR9801D X X
Product Name
Charge Voltage
RoHS/Green
Package
D: 4.2V
G: Green
D : WDFN-3x3-10
Package
Temperature Range
Part Number
Marking ID
13” Tape and Reel Quantity
WDFN-3x3-10
-40 to +85C
AUR9801DGD
9801D
5000/Tape & Reel
Marking Information
9801D
99YWW
9801D: Identification Code
99: Lot Number
Y: Year Code
WW: Week Code
Part Number
Package
Identification Code
AUR9801DGD
WDFN-3x3-10
9801D
AUR9801D
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AUR9801D
Package Outline Dimensions (All dimensions in mm(inch).)
(1)
Package Type: WDFN-3×3-10
2.900(0.114)
3.100(0.122)
N6
2.000(0.079)
REF
N10
2.250(0.089)
2.500(0.098)
1.550(0.061)
1.800(0.071)
2.900(0.114)
3.100(0.122)
Pin 1 Mark
See DETAIL A
0.300(0.012)
N5
Pin 1 Mark
0.500(0.020)
N1
0.500(0.020)
BSC
0.180(0.007)
0.300(0.012)
DETAIL A
0.700(0.028)
0.800(0.031)
0.153(0.006)
0.253(0.010)
2
0.000(0.000)
0.050(0.002)
1
2
1
Pin 1 Mark options
Suggested Pad Layout
(1)
Package Type: WDFN-3×3-10
E
Y2
Y
X2
Y1
X1
Dimensions
Y
(mm)/(inch)
X1
(mm)/(inch)
Y1
(mm)/(inch)
X2
(mm)/(inch)
Y2
(mm)/(inch)
E
(mm)/(inch)
Value
3.400/0.134
0.300/0.012
0.650/0.026
2.500/0.098
1.800/0.071
0.500/0.020
AUR9801D
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AUR9801D
IMPORTANT NOTICE
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
(AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the
application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or
trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume
all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated
website, harmless against all damages.
Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel.
Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and
hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or
indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings
noted herein may also be covered by one or more United States, international or foreign trademarks.
This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the
final and determinative format released by Diodes Incorporated.
LIFE SUPPORT
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express
written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the
labeling can be reasonably expected to result in significant injury to the user.
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the
failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and
acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any
use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related
information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its
representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.
Copyright © 2016, Diodes Incorporated
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AUR9801D
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