MAX1818EUT50#T [MAXIM]
Fixed/Adjustable Positive LDO Regulator, 1.25V Min, 5V Max, PDSO6, SOT-23, 6 PIN;
| 型号： | MAX1818EUT50#T |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Fixed/Adjustable Positive LDO Regulator, 1.25V Min, 5V Max, PDSO6, SOT-23, 6 PIN 光电二极管 |
| 文件： | 总9页 (文件大小：197K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-1860; Rev 2; 6/08
500mA Low-Dropout
Linear Regulator in SOT23
MAX18
General Description
Features
The MAX1818 low-dropout linear regulator operates
from a +2.5V to +5.5V supply and delivers a guaran-
teed 500mA load current with low 120mV dropout. The
high-accuracy ( 1ꢀ% 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 resis-
tive divider.
♦ 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
An internal PMOS pass transistor allows the low 125µA
supply current to remain independent of load, making
this device ideal for portable battery-operated equip-
ment such as personal digital assistants (PDAs%, cellu-
lar 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 regula-
tion, a 0.1µA shutdown, short-circuit protection, and
thermal shutdown protection. The device is available in
a miniature 800mW 6-pin SOT23 package.
♦ 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
Cellular and Cordless Telephones
Personal Digital Assistants (PDAs%
Palmtop Computers
Base Stations
PART*
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
6 SOT23
MAX1818EUT_ _-T
MAX1818EUT_ _#T
6 SOT23
*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.
USB Hubs
T = Tape and reel.
#Denotes an RoHS-compliant package.
Docking Stations
Selector Guide appears at end of data sheet.
Pin Configuration
Typical Operating Circuit
V
= 2.5V TO 5.5V
IN
IN
TOP VIEW
V
IN
OUT
OUT
C
C
OUT
3.3μF
IN
POK
1
2
3
6
5
4
OUT
SET
1μF
MAX1818
MAX1818
R
100k
POK
ON
TO
μC
SHDN
SET
POK
GND
OFF
SHDN
GND
SOT23
________________________________________________________________ Maxim Integrated Products
1
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.
500mA Low-Dropout
Linear Regulator in SOT23
ABSOLUTE MAXIMUM RATINGS
Operating Temperature Range ...........................-40°C to +85°C
IN, SHDN, POK, SET to GND ...................................-0.3V to +6V
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s% (Note 2% ...................+300°C
OUT to GND ................................................-0.3V to (V + 0.3V%
Output Short-Circuit Duration ...............................................1min
IN
Continuous Power Dissipation (T = +70°C% (Note 1%
A
6-Pin SOT23 (derate 10mW/°C above +70°C%..............800mW
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.
MAX18
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
(V = V
+ 500mV or V = +2.5V, whichever is greater; SHDN = IN, T = -40°C to +85°C, unless otherwise noted. Typical values
IN
OUT
IN
A
are at T = +25°C.% (Note 3%
A
PARAMETER
Input Voltage
SYMBOL
CONDITIONS
MIN
2.5
2.0
-1
TYP
MAX
5.5
UNITS
V
V
V
IN
Input Undervoltage Lock-Out
V
Rising, 75mV hysteresis
2.15
2.3
UVLO
I
I
I
= 100mA, T = +25°C, V ≥ 2.0V
OUT
+1
OUT
OUT
OUT
A
= 100mA, V
< 2.0V
-1.5
-2.5
+1.5
+2.5
OUT
Output Voltage Accuracy
(Preset Mode%
V
= 100mA, T = -40°C to +85°C
ꢀ
OUT
A
I
T
= 1mA to 500mA, V > V
IN
= -40°C to +85°C
+ 0.5V,
OUT
OUT
-3
+3
5
A
Adjustable Output Voltage
Range
1.25
V
V
V
= 2.7V,
IN
T
T
= 0°C to +85°C
1.225
1.213
1.250
1.275
1.288
A
A
SET Voltage Threshold
(Adjustable Mode%
V
I
= 100mA,
set to 2.0V
SET
OUT
= -40°C to +85°C
V
OUT
Guaranteed Output Current
(RMS%
I
V
≥ 2.7V
IN
500
mA
OUT
Short-Circuit Current Limit
In-Regulation Current Limit
SET Dual Mode™ Threshold
SET Input Bias Current
I
V
V
= 0, V ≥ 2.7V
0.55
0.8
1.6
1.8
A
A
LIM
OUT
OUT
IN
> 96ꢀ of nominal value, V ≥ 2.7V
IN
50
100
150
+100
250
mV
nA
I
V
= 1.25V
= 100µA
= 500mA
-100
SET
SET
OUT
OUT
I
I
125
140
100
120
210
Ground-Pin Current
Dropout Voltage (Note 4%
Line Regulation
I
Q
µA
mV
ꢀ/V
V
V
V
= 5V
220
215
360
OUT
OUT
OUT
V
- V
I
= 500mA
OUT
= 3.3V
= 2.5V
IN
OUT
V
from (V
+ 100mV% to 5.5V,
IN
OUT
ΔV
-0.15
0
+0.15
LNR
I
= 5mA
LOAD
Dual Mode is a trademark of Maxim Integrated Products
_______________________________________________________________________________________
2
500mA Low-Dropout
Linear Regulator in SOT23
MAX18
ELECTRICAL CHARACTERISTICS (continued)
(V = V
+ 500mV or V = +2.5V, whichever is greater; SHDN = IN, T = -40°C to +85°C, unless otherwise noted. Typical values
IN
OUT
IN
A
are at T = +25°C.% (Note 3%
A
PARAMETER
Load Regulation
SYMBOL
CONDITIONS
MIN
TYP
0.4
MAX
UNITS
ΔV
I
= 1mA to 500mA
OUT
1.0
ꢀ
LDR
Output Voltage Noise
SHUTDOWN
10Hz to 1MHz, C
= 3.3µF (ESR < 0.1Ω%
115
µV
RMS
OUT
SHDN = GND, V = 5.5V
Shutdown Supply Current
I
0.1
15
µA
V
IN
OFF
V
2.5V < V < 5.5V
1.6
IH
IN
SHDN Input Threshold
V
2.5V < V < 5.5V
0.6
25
IL
IN
SHDN = IN or GND, T = +25°C
1
5
A
SHDN Input Bias Current
I
nA
SHDN
T
= +85°C
A
POK OUTPUT
POK Output Low Voltage
V
POK sinking 1mA
0.01
0.1
5.5
25
V
V
OL
Operating Voltage Range for
Valid POK
POK sinking 100µA
1.0
90
POK = 5.5V, T = +25°C
1
5
POK Output High Leakage
Current
A
nA
ꢀ
T
= +85°C
A
POK Threshold
Rising edge, referred to V
93
96
OUT(NOMINAL%
THERMAL PROTECTION
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
T
170
20
°C
°C
SHDN
ΔT
SHDN
Note 3: All devices are 100ꢀ production tested at T = +25°C. Limits over the operating temperature range are guaranteed by
A
design.
Note 4: The Dropout Voltage is defined as V - V
, when V
is 100mV below the value of V
measured for V = V
IN
OUT
OUT
OUT IN OUT(NOM%
+ 500mV. Since the minimum input voltage is 2.5V, this specification is only meaningful when V
> 2.5V. For
OUT(NOM%
✕
V
between 2.5V and 3.5V, use the following equations: Typical Dropout = -93mV/V
V
+ 445mV;
OUT(NOM%
OUT(NOM%
✕
Guaranteed Maximum Dropout = -137mV/V
Maximum Dropout = 220mV.
V
+7004mV. For V
> 3.5V, Typical Dropout = 120mV;
OUT(NOM%
OUT(NOM%
Typical Operating Characteristics
(V = (V
IN
+ 500mV% or +2.5V, whichever is greater; SHDN = IN, C = 1µF, C = 3.3µF, T = +25°C, unless otherwise noted.%
OUT A
OUT
IN
GROUND PIN CURRENT
vs. TEMPERATURE
GROUND PIN CURRENT
vs. INPUT VOLTAGE
GROUND PIN CURRENT
vs. LOAD CURRENT
170
160
145
130
115
100
85
250
225
200
175
150
125
100
75
I
= 150mA
I
= 150mA
LOAD
LOAD
160
150
140
130
120
110
5.0V OUTPUT
2.5V OUTPUT
3.3V OUTPUT
3.3V OUTPUT
2.5V OUTPUT
1.8V OUTPUT
1.8V OUTPUT
1.5V OUTPUT
70
50
55
25
0
0
40
-40
-15
10
35
60
85
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
LOAD CURRENT (A)
TEMPERATURE (°C)
_______________________________________________________________________________________
3
500mA Low-Dropout
Linear Regulator in SOT23
Typical Operating Characteristics (continued)
(V = (V
IN
+ 500mV% or +2.5V, whichever is greater; SHDN = IN, C = 1µF, C = 3.3µF, T = +25°C, unless otherwise noted.%
OUT A
OUT
IN
DROPOUT VOLTAGE
vs. LOAD CURRENT
OUTPUT VOLTAGE ACCURACY
OUTPUT VOLTAGE ACCURACY
vs. LOAD CURRENT
vs. TEMPERATURE
3.0
180
V
3.0
2.5
= 3.3V
V
= 1.5V TO 5.0V
I
= 150mA
OUT
OUT
LOAD
2.5
2.0
T
A
= +85°C
150
120
90
60
30
0
2.0
8
1.5
1.5
1.0
1.0
3.3V OUTPUT
2.5V OUTPUT
0.5
0.5
0
0
T
= +25°C
A
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
T
A
= -40°C
1.8V OUTPUT
0
0.1
0.2
0.3
0.4
0.5
-40
-15
10
35
60
85
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
LOAD CURRENT (A)
LOAD CURRENT (A)
TEMPERATURE (°C)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
LINE TRANSIENT
LOAD-TRANSIENT RESPONSE
MAX1818 toc08
MAX1818 toc09
80
70
60
50
V
V
= 3.3V
= 2.5V
IN
OUT
C
OUT
= 3.3μF
V
OUT
I
500mA
100mA
OUT
V
OUT
= 3.3V
R
LOAD
= 100Ω
40
30
V
IN
20
10
0
V
OUT
100μs/div
0.01
0.1
1
10
100
1000
40μs/div
FREQUENCY (kHz)
LOAD-TRANSIENT RESPONSE
NEAR DROPOUT
POWER-ON RESET
MAX1818 toc11
MAX1818 toc10
V
V
POK
V
V
= V
+ 100mV
IN
OUT
= 3.3V
OUT
0
OUT
2V/div
0
0
V
IN
0
10ms/div
10μs/div
4
_______________________________________________________________________________________
500mA Low-Dropout
Linear Regulator in SOT23
MAX18
Typical Operating Characteristics (continued)
(V = (V
IN
+ 500mV% or +2.5V, whichever is greater; SHDN = IN, C = 1µF, C
= 3.3µF, T = +25°C, unless otherwise noted.%
OUT A
OUT
IN
SHORT-CIRCUIT CURRENT LIMIT
vs. SUPPLY VOLTAGE
SHUTDOWN WAVEFORM
MAX1818 toc12
1.11
V
= +2V
OUT(NOM)
1.10
1.09
SHUTDOWN
VOLTAGE
0
1.08
1.07
1.06
1.05
1.04
1.03
1.02
1.01
1.00
V
OUT
0
2V/div
POK
0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
200μs/div
SUPPLY VOLTAGE (V)
Pin Description
PIN
NAME
FUNCTION
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%.
1
IN
Open-Drain POK Output. POK remains low while the output voltage (V
Connect a 100kΩ pull-up resistor from POK to OUT to obtain an output voltage.
% is below the POK threshold.
OUT
2
POK
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.
3
4
5
SHDN
GND
SET
Ground
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.
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.
6
OUT
pass-transistor gate is pulled lower, which allows more
current to pass to the output and increases the output
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 illustrat-
ed in Figure 1, the MAX1818 consists of a 1.25V refer-
ence, error amplifier, P-channel pass transistor, and
internal feedback voltage-divider.
voltage. If the feedback voltage is too high, the pass-
transistor gate is pulled up, allowing less current to
pass to the output.
The output voltage is fed back through either an inter-
nal resistive divider connected to OUT or an external
resistor network connected to SET. The Dual Mode
comparator examines V
and selects the feedback
SET
The 1.25V reference is connected to the error amplifier,
which compares this reference with the feedback volt-
age and amplifies the difference. If the feedback volt-
age is lower than the reference voltage, the
path. If V
is below 50mV, the internal feedback path
SET
is used and the output is regulated to the factory-preset
voltage.
_______________________________________________________________________________________
5
500mA Low-Dropout
Linear Regulator in SOT23
V
IN
= 2.5V TO 5.5V
IN
C
IN
1μF
THERMAL
SENSOR
MOSFET
DRIVER WITH
I
LIM
MAX18
V
OUT
= 1.25V TO 5.0V
OUT
ON
SHDN
C
OUT
3.3μF
5k
OFF
SHUTDOWN
LOGIC
V
REF
1.25V
ERROR
AMPLIFIER
R1
LOGIC SUPPLY
VOLTAGE (V
)
OUT
R
POK
100k
MAX1818
POK
TO
μC
SET
R2
93% V
100mV
REF
GND
Figure 1. Functional Diagram
Additional blocks include an output current limiter, ther-
mal sensor, and shutdown logic.
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:
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 regula-
tors also waste considerable current in dropout when
the pass transistor saturates, and use high base-drive
currents under large loads. The MAX1818 does not suf-
fer from these problems and consumes only 125µA of
quiescent current under heavy loads as well as in
dropout.
R1 = R2 [(V
/ V
% – 1]
SET
OUT
where V
to 5.0V.
= 1.25V, and V
may range from 1.25V
SET
OUT
Shutdown
Pull SHDN low to enter shutdown. During shutdown, the
output is disconnected from the input and supply cur-
rent drops to 0.1µA. When in shutdown, POK pulls low
and OUT is high impedance. The capacitance and load
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 volt-
age. The two-digit part number suffix identifies the out-
at OUT determine the rate at which V
decays.
OUT
SHDN can be pulled as high as 6V, regardless of the
input and output voltage.
6
_______________________________________________________________________________________
500mA Low-Dropout
Linear Regulator in SOT23
MAX18
MAXIMUM OUTPUT CURRENT
vs. INPUT VOLTAGE
(POWER DISSIPATION LIMIT)
V
OUT
R1 = R2
- 1
1.25V
600
V
= 2.5V TO 5.5V
IN
V
OUT
T = +85°C
A
MAXIMUM RECOMMENDED
OUTPUT CURRENT
A
IN
OUT
T = +70°C
C
1μF
C
OUT
3.3μF
IN
R
1
MAX1818
400
200
0
ON
SHDN
POK
SET
V
OUT
= 1.8V
OFF
V
OUT
= 2.5V
V
OUT
= 3.3V
R
2
GND
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
INPUT VOLTAGE (V)
Figure 3. Power Operating Regions: Maximum Output vs.
Supply Voltage
Figure 2. Adjustable Output Using External Feedback
Resistors
do not exceed the absolute maximum junction-temper-
POK Output
The power OK (POK% output pulls low when OUT is less
than 93ꢀ of the nominal regulation voltage. Once OUT
exceeds 93ꢀ 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 appli-
cations. POK can be used as a power-okay (POK% signal
to a microcontroller (µC%, or drive an external LED to indi-
cate power failure. When the MAX1818 is shut down,
POK is held low independent of the output voltage. If
unused, leave POK grounded or unconnected.
ature rating of T = +150°C.
J
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 = I
OUT
× (V
-
IN
OUT
V
%. The maximum allowed power dissipation is
800mW at T = +70°C or:
A
P
MAX
= (T
- T % / ( θ + θ
%
J(MAX%
A
JC
CA
Current Limit
The MAX1818 monitors and controls the pass transis-
tor’s gate voltage, limiting the output current to 0.8A
(typ%. This current limit doubles when the output voltage
is within 4ꢀ of the nominal value to improve perfor-
mance with large load transients.
where T - T is the temperature difference between
J
A
the MAX1818 die junction and the surrounding air, θ
JC
is the thermal resistance of the junction to the case,
and θ is the thermal resistance from the case
CA
through the PC board, copper traces, and other materi-
als to the surrounding air. For best heatsinking, the
copper area should be equally shared between the IN,
OUT, and GND pins.
Thermal Overload Protection
Thermal overload protection limits total power dissipa-
tion in the MAX1818. When the junction temperature
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 input-
output differential voltages are low, as shown in Figure 3.
exceeds T = +170°C, a thermal sensor turns off the
J
pass transistor, allowing the IC to cool. The thermal
sensor turns the pass transistor on again after the junc-
tion 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,
_______________________________________________________________________________________
7
500mA Low-Dropout
Linear Regulator in SOT23
The MAX1818 load-transient response (see Typical
Applications Information
Operating Characteristics% shows two components of
the output response: a DC shift from the output imped-
ance 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.
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 low-
ESR capacitor between OUT and ground. For output
voltages less than 2V, use a 4.7µF low-ESR output
MAX18
Input-Output (Dropout) Voltage
A regulator’s minimum input-to-output voltage differen-
tial (dropout voltage% determines the lowest usable sup-
ply 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-to-
capacitor. The input capacitor (C % lowers the source
IN
impedance of the input supply. Reduce noise and
improve load-transient response, stability, and power-
supply rejection by using larger output capacitors, such
as 10µF.
The output capacitor’s (C
% equivalent series resis-
OUT
source on-resistance (R
% multiplied by the load
DS(ON%
tance (ESR% affects stability and output noise. Use out-
put capacitors with an ESR of 0.1Ω or less to ensure
stability and optimum transient response. Surface-
mount ceramic capacitors have very low ESR and are
current (see Typical Operating Characteristics%.
= V - V = R × I
DS(ON% OUT
V
DROPOUT
IN
OUT
The MAX1818 ground current remains below 150µA in
dropout.
commonly available in values up to 10µF. Connect C
IN
and C
as close to the MAX1818 as possible to mini-
OUT
mize the impact of PC board trace inductance.
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
Selector Guide
Package Information
For the latest package outline information and land patterns, go
SOT23
SOT23
to www.maxim-ic.com/packages.
PART AND
SUFFIX
TOP MARK
(RoHS
COMPLIANT)
TOP
MARK
V
OUT
PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
6 SOT23
U6F-6
21-0058
21-0058
MAX1818EUT15
MAX1818EUT18
MAX1818EUT20
MAX1818EUT25
MAX1818EUT33
MAX1818EUT50
1.5V or Adj
1.8V or Adj
2.0V or Adj
2.5V or Adj
3.3V or Adj
5.0V or Adj
AASO
AANU
AANV
AANF
AANG
AANH
ABZM
ABZG
ABZJ
ABZK
ABZH
ABZL
6 SOT23#
U6FH-6
8
_______________________________________________________________________________________
500mA Low-Dropout
Linear Regulator in SOT23
MAX18
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
DESCRIPTION
CHANGED
2
6/08
Updated Ordering Information and Selector Guide with RoHS-compliant package
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.
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