null  null
19-1860; Rev 2; 6/08
500mA Low-Dropout
Linear Regulator in SOT23
Features
♦ Guaranteed 500mA Output Current
♦ Low 120mV Dropout at 500mA
♦ ±1% Output Voltage Accuracy
Preset at 1.5V, 1.8V, 2.0V, 2.5V, 3.3V, 5V
Adjustable from 1.25V to 5.0V
♦ Power OK Output
♦ Low 125µA Ground Current
♦ 0.1µA Shutdown Current
♦ Thermal Overload Protection
♦ Output Current Limit
♦ Tiny 800mW 6-Pin SOT23 Package
Ordering Information
Applications
Notebook Computers
TEMP RANGE
PIN-PACKAGE
Cellular and Cordless Telephones
MAX1818EUT_ _-T
PART*
-40°C to +85°C
6 SOT23
Personal Digital Assistants (PDAs)
MAX1818EUT_ _#T
-40°C to +85°C
6 SOT23
Palmtop Computers
*Insert the desired two-digit suffix (see Selector Guide) into the
blanks to complete the part number.
Note: The MAX1818 requires a special solder temperature
profile described in the Absolute Maximum Ratings section.
Base Stations
USB Hubs
Docking Stations
T = Tape and reel.
#Denotes an RoHS-compliant package.
Selector Guide appears at end of data sheet.
Pin Configuration
Typical Operating Circuit
VIN = 2.5V TO 5.5V
TOP VIEW
IN
NC
IN 1
POK 2
MAX1818
6
OUT
5
SET
COUT
3.3μF
CIN
1μF
MAX1818
RPOK
100k
ON
SHDN 3
4
SOT23
GND
VOUT
OUT
SHDN
POK
SET
GND
OFF
TO
μC
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim's website at www.maxim-ic.com.
1
MAX1818
General Description
The MAX1818 low-dropout linear regulator operates
from a +2.5V to +5.5V supply and delivers a guaranteed 500mA load current with low 120mV dropout. The
high-accuracy (±1%) output voltage is preset at an
internally trimmed voltage (see Selector Guide) or can
be adjusted from 1.25V to 5.0V with an external resistive divider.
An internal PMOS pass transistor allows the low 125µA
supply current to remain independent of load, making
this device ideal for portable battery-operated equipment such as personal digital assistants (PDAs), cellular phones, cordless phones, base stations, and
notebook computers.
Other features include an active-low open-drain reset
output that indicates when the output is out of regulation, a 0.1µA shutdown, short-circuit protection, and
thermal shutdown protection. The device is available in
a miniature 800mW 6-pin SOT23 package.
MAX1818
500mA Low-Dropout
Linear Regulator in SOT23
ABSOLUTE MAXIMUM RATINGS
IN, SHDN, POK, SET to GND ...................................-0.3V to +6V
OUT to GND ................................................-0.3V to (VIN + 0.3V)
Output Short-Circuit Duration ...............................................1min
Continuous Power Dissipation (TA = +70°C) (Note 1)
6-Pin SOT23 (derate 10mW/°C above +70°C)..............800mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) (Note 2) ...................+300°C
Note 1: Thermal properties are specified with product mounted on PC board with one square-inch of copper area and still air. With
minimal copper, the SOT23 package dissipates 712mW at +70°C. With a quarter square inch of copper, it will dissipate
790mW at +70°C. Copper should be equally shared between the IN, OUT, and GND pins.
Note 2: This device is constructed using a unique set of packaging techniques that imposes a limit on the thermal profile to which
the device can be exposed during board-level solder attach and rework. The limit permits only the use of the solder profiles
recommended in the industry standard specification, IPC JEDEC-J-STD-020A, paragraph 7.6, Table 3 for the IR/VPR and
convection reflow. Preheating is required. Hand or wave soldering is not allowed.
Stresses beyond 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 in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VIN = VOUT + 500mV or VIN = +2.5V, whichever is greater; SHDN = IN, TA = -40°C to +85°C, unless otherwise noted. Typical values
are at TA = +25°C.) (Note 3)
PARAMETER
Input Voltage
Input Undervoltage Lock-Out
Output Voltage Accuracy
(Preset Mode)
SYMBOL
CONDITIONS
VIN
VUVLO
VOUT
Guaranteed Output Current
(RMS)
IOUT
Short-Circuit Current Limit
ILIM
Ground-Pin Current
Dropout Voltage (Note 4)
Line Regulation
IQ
VIN - VOUT
ΔVLNR
IOUT = 100mA, VOUT < 2.0V
-1.5
+1.5
IOUT = 100mA, TA = -40°C to +85°C
-2.5
+2.5
-3
+3
1.25
5
TA = 0°C to +85°C
1.225
TA = -40°C to +85°C
1.213
1.250
V
1.275
V
VIN ≥ 2.7V
500
VOUT = 0, VIN ≥ 2.7V
0.55
VSET = 1.25V
mA
0.8
1.8
1.6
100
-100
IOUT = 100µA
125
IOUT = 500mA
140
IOUT = 500mA
%
1.288
150
mV
+100
nA
250
100
220
VOUT = 3.3V
120
215
VOUT = 2.5V
210
360
0
+0.15
VIN from (VOUT + 100mV) to 5.5V,
ILOAD = 5mA
-0.15
_______________________________________________________________________________________
A
A
VOUT = 5V
Dual Mode is a trademark of Maxim Integrated Products
2
V
+1
50
ISET
2.3
-1
SET Dual Mode™ Threshold
SET Input Bias Current
V
2.0
VOUT > 96% of nominal value, VIN ≥ 2.7V
In-Regulation Current Limit
UNITS
5.5
IOUT = 100mA, TA = +25°C, VOUT ≥ 2.0V
VIN = 2.7V,
IOUT = 100mA,
VOUT set to 2.0V
2.15
MAX
Rising, 75mV hysteresis
Adjustable Output Voltage
Range
VSET
TYP
2.5
IOUT = 1mA to 500mA, VIN > VOUT + 0.5V,
TA = -40°C to +85°C
SET Voltage Threshold
(Adjustable Mode)
MIN
µA
mV
%/V
500mA Low-Dropout
Linear Regulator in SOT23
(VIN = VOUT + 500mV or VIN = +2.5V, whichever is greater; SHDN = IN, TA = -40°C to +85°C, unless otherwise noted. Typical values
are at TA = +25°C.) (Note 3)
PARAMETER
SYMBOL
ΔVLDR
Load Regulation
Output Voltage Noise
TYP
MAX
UNITS
IOUT = 1mA to 500mA
CONDITIONS
MIN
0.4
1.0
%
10Hz to 1MHz, COUT = 3.3µF (ESR < 0.1Ω)
115
0.1
µVRMS
SHUTDOWN
Shutdown Supply Current
IOFF
SHDN = GND, VIN = 5.5V
SHDN Input Threshold
VIH
2.5V < VIN < 5.5V
VIL
2.5V < VIN < 5.5V
SHDN Input Bias Current
I SHDN
15
µA
1.6
V
0.6
SHDN = IN or GND, TA = +25°C
1
TA = +85°C
5
25
nA
POK OUTPUT
POK Output Low Voltage
VOL
POK sinking 1mA
Operating Voltage Range for
Valid POK
0.01
POK sinking 100µA
1.0
POK Output High Leakage
Current
POK = 5.5V, TA = +25°C
1
TA = +85°C
5
POK Threshold
Rising edge, referred to VOUT(NOMINAL)
90
0.1
V
5.5
V
25
93
nA
96
%
THERMAL PROTECTION
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
TSHDN
170
°C
ΔTSHDN
20
°C
Note 3: All devices are 100% production tested at TA = +25°C. Limits over the operating temperature range are guaranteed by
design.
Note 4: The Dropout Voltage is defined as VIN - VOUT, when VOUT is 100mV below the value of VOUT measured for VIN = VOUT(NOM)
+ 500mV. Since the minimum input voltage is 2.5V, this specification is only meaningful when VOUT(NOM) > 2.5V. For
VOUT(NOM) between 2.5V and 3.5V, use the following equations: Typical Dropout = -93mV/V ✕ VOUT(NOM) + 445mV;
Guaranteed Maximum Dropout = -137mV/V ✕ VOUT(NOM) +7004mV. For VOUT(NOM) > 3.5V, Typical Dropout = 120mV;
Maximum Dropout = 220mV.
Typical Operating Characteristics
(VIN = (VOUT + 500mV) or +2.5V, whichever is greater; SHDN = IN, CIN = 1µF, COUT = 3.3µF, TA = +25°C, unless otherwise noted.)
175
150
125
100
3.3V OUTPUT
1.8V OUTPUT
2.5V OUTPUT
75
50
145
130
2.5V OUTPUT
115
1.8V OUTPUT
3.3V OUTPUT
100
85
70
0
INPUT VOLTAGE (V)
5.0V OUTPUT
150
140
1.5V OUTPUT
130
110
40
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
ILOAD = 150mA
160
120
55
25
170
MAX1818 toc03
200
160
MAX1818 toc02
ILOAD = 150mA
GROUND PIN CURRENT (μA)
GROUND PIN CURRENT (μA)
225
MAX1818 toc01
250
GROUND PIN CURRENT
vs. TEMPERATURE
GROUND PIN CURRENT
vs. LOAD CURRENT
GROUND PIN CURRENT (μA)
GROUND PIN CURRENT
vs. INPUT VOLTAGE
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
LOAD CURRENT (A)
-40
-15
10
35
60
85
TEMPERATURE (°C)
_______________________________________________________________________________________
3
MAX1818
ELECTRICAL CHARACTERISTICS (continued)
Typical Operating Characteristics (continued)
(VIN = (VOUT + 500mV) or +2.5V, whichever is greater; SHDN = IN, CIN = 1µF, COUT = 3.3µF, TA = +25°C, unless otherwise noted.)
TA = +25°C
60
TA = -40°C
30
0
0
0.1
0.2
0.3
0.4
2.5V OUTPUT
1.8V OUTPUT
0.5
0
LOAD CURRENT (A)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
LINE TRANSIENT
70
COUT = 3.3μF
60
-15
ILOAD = 150mA
10
35
VOUT
VOUT = 3.3V
85
LOAD-TRANSIENT RESPONSE
MAX1818 toc09
VIN = 3.3V
VOUT = 2.5V
IOUT
500mA
100mA
RLOAD = 100Ω
50
60
TEMPERATURE (°C)
MAX1818 toc08
MAX1818 toc07
80
VOUT = 1.5V TO 5.0V
-40
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
LOAD CURRENT (A)
2.5V
10mV/div
90
3.3V OUTPUT
3.0
2.5
2.0
1.5
1.0
0.5
0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
3.5V
500mV/div
30
VIN
20
20mV/div
40
VOUT
10
0
0.01
0.1
1
10
100
100μs/div
1000
40μs/div
FREQUENCY (kHz)
LOAD-TRANSIENT RESPONSE
NEAR DROPOUT
POWER-ON RESET
MAX1818 toc11
MAX1818 toc10
VIN = VOUT + 100mV
VOUT = 3.3V
VPOK
VOUT
100mV/div
DROPOUT VOLTAGE (mV)
120
OUTPUT VOLTAGE ACCURACY (%)
TA = +85°C
3.0
2.5
2.0
1.5
1.0
0.5
0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
MAX1818 toc05
VOUT = 3.3V
OUTPUT VOLTAGE ACCURACY (%)
MAX1818 toc04
180
150
OUTPUT VOLTAGE ACCURACY
vs. TEMPERATURE
OUTPUT VOLTAGE ACCURACY
vs. LOAD CURRENT
MAX1818 toc06
DROPOUT VOLTAGE
vs. LOAD CURRENT
0
VOUT
200mA
IOUT
PSRR (dB)
MAX1818
500mA Low-Dropout
Linear Regulator in SOT23
2V/div
0
VIN
0
0
10μs/div
4
10ms/div
_______________________________________________________________________________________
500mA Low-Dropout
Linear Regulator in SOT23
SHORT-CIRCUIT CURRENT LIMIT
vs. SUPPLY VOLTAGE
SHUTDOWN WAVEFORM
MAX1818 toc12
0
VOUT
0
2V/div
0
POK
MAX1818 toc13
SHORT-CIRCUIT CURRENT LIMIT (A)
SHUTDOWN
VOLTAGE
1.11
VOUT(NOM) = +2V
1.10
1.09
1.08
1.07
1.06
1.05
1.04
1.03
1.02
1.01
1.00
200μs/div
2.5
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
Pin Description
PIN
NAME
FUNCTION
1
IN
Regulator Input. Supply voltage can range from 2.5V to 5.5V. Bypass with a 1μF capacitor to GND (see
Capacitor Selection and Regulator Stability).
2
POK
Open-Drain POK Output. POK remains low while the output voltage (VOUT) is below the POK threshold.
Connect a 100kΩ pull-up resistor from POK to OUT to obtain an output voltage.
3
SHDN
Active-Low Shutdown Input. A logic low reduces supply current below 15μA. In shutdown, the POK output is
low, and OUT is high impedance. Connect to IN for normal operation.
4
GND
Ground
5
SET
Voltage-Setting Input. Connect to GND for preset output. Connect to a resistive voltage-divider between
OUT and GND to set the output voltage between 1.25V and 5.0V.
6
OUT
Regulator Output. Sources up to 500mA. Bypass with a 3.3μF low-ESR capacitor to GND. Use a 4.7μF
capacitor for output voltages below 2V.
Detailed Description
The MAX1818 is a low-dropout, low-quiescent-current
linear regulator designed primarily for battery-powered
applications. The device supplies loads up to 500mA
and is available with preset output voltages. As illustrated in Figure 1, the MAX1818 consists of a 1.25V reference, error amplifier, P-channel pass transistor, and
internal feedback voltage-divider.
The 1.25V reference is connected to the error amplifier,
which compares this reference with the feedback voltage and amplifies the difference. If the feedback voltage is lower than the reference voltage, the
pass-transistor gate is pulled lower, which allows more
current to pass to the output and increases the output
voltage. If the feedback voltage is too high, the passtransistor gate is pulled up, allowing less current to
pass to the output.
The output voltage is fed back through either an internal resistive divider connected to OUT or an external
resistor network connected to SET. The Dual Mode
comparator examines VSET and selects the feedback
path. If VSET is below 50mV, the internal feedback path
is used and the output is regulated to the factory-preset
voltage.
_______________________________________________________________________________________
5
MAX1818
Typical Operating Characteristics (continued)
(VIN = (VOUT + 500mV) or +2.5V, whichever is greater; SHDN = IN, CIN = 1µF, COUT = 3.3µF, TA = +25°C, unless otherwise noted.)
MAX1818
500mA Low-Dropout
Linear Regulator in SOT23
VIN = 2.5V TO 5.5V
IN
CIN
1μF
THERMAL
SENSOR
MOSFET
DRIVER WITH
I LIM
OUT
ON
VOUT = 1.25V TO 5.0V
SHDN
OFF
COUT
3.3μF
SHUTDOWN
LOGIC
5k
VREF
1.25V
ERROR
AMPLIFIER
LOGIC SUPPLY
VOLTAGE (VOUT)
RPOK
100k
R1
MAX1818
POK
TO
μC
SET
R2
93% VREF
100mV
GND
Figure 1. Functional Diagram
Additional blocks include an output current limiter, thermal sensor, and shutdown logic.
Internal P-Channel Pass Transistor
The MAX1818 features a 0.25Ω P-channel MOSFET
pass transistor. Unlike similar designs using PNP pass
transistors, P-channel MOSFETs require no base drive,
which reduces quiescent current. PNP-based regulators also waste considerable current in dropout when
the pass transistor saturates, and use high base-drive
currents under large loads. The MAX1818 does not suffer from these problems and consumes only 125µA of
quiescent current under heavy loads as well as in
dropout.
Output Voltage Selection
The MAX1818’s Dual Mode operation allows operation
in either a preset voltage mode or an adjustable mode.
Connect SET to GND to select the preset output voltage. The two-digit part number suffix identifies the out-
6
put voltage (see Selector Guide) . For example, the
MAX1818EUT33 has a preset 3.3V output voltage.
The output voltage may also be adjusted by connecting
a voltage-divider from OUT to SET to GND (Figure 2).
Select R2 in the 25kΩ to 100kΩ range. Calculate R1
with the following equation:
R1 = R2 [(VOUT / VSET) – 1]
where VSET = 1.25V, and VOUT may range from 1.25V
to 5.0V.
Shutdown
Pull SHDN low to enter shutdown. During shutdown, the
output is disconnected from the input and supply current drops to 0.1µA. When in shutdown, POK pulls low
and OUT is high impedance. The capacitance and load
at OUT determine the rate at which V OUT decays.
SHDN can be pulled as high as 6V, regardless of the
input and output voltage.
_______________________________________________________________________________________
500mA Low-Dropout
Linear Regulator in SOT23
CIN
1μF
COUT
3.3μF
MAX1818
R1
ON
SHDN
SET
OFF
R2
POK
GND
TA = +85°C
TA = +70°C
MAXIMUM RECOMMENDED
OUTPUT CURRENT
MAX1818 fig03
600
OUT
MAXIMUM OUTPUT CURRENT (mA)
IN
-1
1.25V
VOUT
400
VOUT = 1.8V
200
VOUT = 2.5V
VOUT = 3.3V
MAXIMUM INPUT VOLTAGE
V IN = 2.5V TO 5.5V
MAX1818
R1 = R2
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
(POWER DISSIPATION LIMIT)
VOUT
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
INPUT VOLTAGE (V)
Figure 2. Adjustable Output Using External Feedback
Resistors
POK Output
The power OK (POK) output pulls low when OUT is less
than 93% of the nominal regulation voltage. Once OUT
exceeds 93% of the nominal voltage, POK goes high
impedance. POK is an open-drain N-channel output. To
obtain a voltage output, connect a pullup resistor from
POK to OUT. A 100kΩ resistor works well for most applications. POK can be used as a power-okay (POK) signal
to a microcontroller (µC), or drive an external LED to indicate power failure. When the MAX1818 is shut down,
POK is held low independent of the output voltage. If
unused, leave POK grounded or unconnected.
Current Limit
The MAX1818 monitors and controls the pass transistor’s gate voltage, limiting the output current to 0.8A
(typ). This current limit doubles when the output voltage
is within 4% of the nominal value to improve performance with large load transients.
Thermal Overload Protection
Thermal overload protection limits total power dissipation in the MAX1818. When the junction temperature
exceeds TJ = +170°C, a thermal sensor turns off the
pass transistor, allowing the IC to cool. The thermal
sensor turns the pass transistor on again after the junction temperature cools by 20°C, resulting in a pulsed
output during continuous thermal overload conditions.
Thermal overload protection protects the MAX1818 in
the event of fault conditions. For continuous operation,
Figure 3. Power Operating Regions: Maximum Output vs.
Supply Voltage
do not exceed the absolute maximum junction-temperature rating of TJ = +150°C.
Operating Region and Power Dissipation
The MAX1818’s maximum power dissipation depends
on the thermal resistance of the IC package and circuit
board, the temperature difference between the die
junction and ambient air, and the rate of air flow. The
power dissipated in the device is P = IOUT × (VIN V OUT ). The maximum allowed power dissipation is
800mW at TA = +70°C or:
PMAX = (TJ(MAX) - TA) / ( θJC + θCA)
where TJ - TA is the temperature difference between
the MAX1818 die junction and the surrounding air, θJC
is the thermal resistance of the junction to the case,
and θ CA is the thermal resistance from the case
through the PC board, copper traces, and other materials to the surrounding air. For best heatsinking, the
copper area should be equally shared between the IN,
OUT, and GND pins.
The MAX1818 delivers up to 0.5A RMS and operates
with input voltages up to +5.5V, but not simultaneously.
High output currents can only be sustained when inputoutput differential voltages are low, as shown in Figure 3.
_______________________________________________________________________________________
7
MAX1818
500mA Low-Dropout
Linear Regulator in SOT23
Applications Information
Capacitor Selection and
Regulator Stability
Capacitors are required at the MAX1818’s input and
output for stable operation over the full temperature
range and with load currents up to 500mA. Connect a
1µF capacitor between IN and ground and a 3.3µF lowESR capacitor between OUT and ground. For output
voltages less than 2V, use a 4.7µF low-ESR output
capacitor. The input capacitor (CIN) lowers the source
impedance of the input supply. Reduce noise and
improve load-transient response, stability, and powersupply rejection by using larger output capacitors, such
as 10µF.
The output capacitor’s (COUT) equivalent series resistance (ESR) affects stability and output noise. Use output capacitors with an ESR of 0.1Ω or less to ensure
stability and optimum transient response. Surfacemount ceramic capacitors have very low ESR and are
commonly available in values up to 10µF. Connect CIN
and COUT as close to the MAX1818 as possible to minimize the impact of PC board trace inductance.
The MAX1818 load-transient response (see T ypical
Operating Characteristics) shows two components of
the output response: a DC shift from the output impedance due to the load current change, and the transient
response. A typical transient response for a step
change in the load current from 100mA to 500mA is
8mV. Increasing the output capacitor’s value and
decreasing the ESR attenuates the overshoot.
Input-Output (Dropout) Voltage
A regulator’s minimum input-to-output voltage differential (dropout voltage) determines the lowest usable supply voltage. In battery-powered systems, this
determines the useful end-of-life battery voltage.
Because the MAX1818 uses a P-channel MOSFET pass
transistor, its dropout voltage is a function of drain-tosource on-resistance (RDS(ON)) multiplied by the load
current (see Typical Operating Characteristics).
VDROPOUT = VIN - VOUT = RDS(ON) × IOUT
The MAX1818 ground current remains below 150µA in
dropout.
Noise, PSRR, and Transient Response
The MAX1818 is designed to operate with low dropout
voltages and low quiescent currents in battery-powered
systems while still maintaining good noise, transient
response, and AC rejection. See the Typical Operating
Characteristics for a plot of power-supply rejection ratio
(PSRR) versus frequency. When operating from noisy
sources, improved supply-noise rejection and transient
response can be achieved by increasing the values of
the input and output bypass capacitors and through
passive filtering techniques.
Chip Information
TRANSISTOR COUNT: 845
Package Information
Selector Guide
8
VOUT
SOT23
TOP
MARK
SOT23
TOP MARK
(RoHS
COMPLIANT)
MAX1818EUT15
1.5V or Adj
AASO
ABZM
MAX1818EUT18
1.8V or Adj
AANU
ABZG
MAX1818EUT20
2.0V or Adj
AANV
ABZJ
MAX1818EUT25
2.5V or Adj
AANF
ABZK
MAX1818EUT33
3.3V or Adj
AANG
ABZH
MAX1818EUT50
5.0V or Adj
AANH
ABZL
PART AND
SUFFIX
For the latest package outline information and land patterns, go
to www.maxim-ic.com/packages.
PACKAGE TYPE
PACKAGE CODE
DOCUMENT NO.
6 SOT23
U6F-6
21-0058
6 SOT23#
U6FH-6
21-0058
_______________________________________________________________________________________
500mA Low-Dropout
Linear Regulator in SOT23
REVISION
NUMBER
REVISION
DATE
2
6/08
DESCRIPTION
Updated Ordering Information and Selector Guide with RoHS-compliant package
PAGES
CHANGED
1, 8
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 9
© 2008 Maxim Integrated Products
is a registered trademark of Maxim Integrated Products, Inc.
MAX1818
Revision History
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