19-3188; Rev 2; 9/09
1.425V to 3.6V Input, 1A,
0.2V Dropout LDO Regulators
x
67/MAX518
General Description
Features
The MAX8516/MAX8517/MAX8518 low-dropout linear
regulators operate from input voltages as low as 1.425V
and are able to deliver up to 1A of continuous output
current with a maximum dropout voltage of only 200mV.
♦ 1.425V to 3.6V Input Voltage Range
♦ Guaranteed 200mV Dropout at 1A Output Current
♦
1.4ꢀ Output Aꢁꢁuraꢁc Oꢂer ꢃoadꢄ ꢃLneꢄ and
Temperature (0°C to +85°C)ꢄ 0.6ꢀ InLtLal Aꢁꢁuraꢁc
The output voltage can be set from 0.5V to (V - 0.2V)
IN
♦ CompatLble wLth CeramLꢁ CapaꢁLtors
♦ Fast TransLent Response
and is 1.4% accurate over load and line variations, from
0°C to +85°C.
These regulators use small, 1µF ceramic input capaci-
tors and 4.7µF ceramic output capacitors to deliver 1A
output current. High bandwidth provides excellent tran-
sient response and limits the output voltage deviation to
45mV for a 20mA to 1A load step, with only a 4.7µF
ceramic output capacitor, and the voltage deviations can
be reduced further by increasing the output capacitor.
♦ 320µA OperatLng Supplc Current
♦ <25µA Shutdown Supplc Current
♦ Short-CLrꢁuLt ProteꢁtLon
♦ Thermal-Oꢂerload ProteꢁtLon
♦ Soft-Start ꢃLmLts Inrush Current
Ordering Information
Designed with an internal p-channel MOSFET pass
transistor, the MAX8516/MAX8517/MAX8518 feature
low 340µA (typ) supply current during dropout condi-
tions. Soft-start reduces inrush current. Other features
include a logic-controlled shutdown mode, short-circuit
protection, and thermal-overload protection.
PART
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
10 µMAX
MAX8516EUB
MAX8517EUB
MAX8517EUB/V
MAX8518EUB
10 µMAX
10 µMAX
10 µMAX
The MAX8517 features a power-OK (POK) output that
transitions high when the regulator output is within
10% of its nominal output voltage. The MAX8518
features a 150ms power-on reset output.
The parts are packaged in a 10-pin µMAX® package that
includes an exposed pad for optimal power dissipation.
/V Denotes an automotive qualified part.
Typical Operating Circuit
INPUT
OUTPUT
IN
1.425V TO 3.6V
0.5V TO (V - 0.2V), 1A
IN_
OUT_
1µF
Applications
MAX8516
MAX8517
MAX8518
Servers
Post Regulators
Notebooks
PDAs
POWER-ON RESET
POWER-OK
4.7µF
Storage
POR (MAX8518)
POK (MAX8517)
EN
FB
Networking
Base Stations
Optical Modules
ATE
ON
GND
OFF
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Pin Configurations
TOP VIEW
EN
IN
1
2
3
4
5
10 N.C.
EN
IN
1
2
3
4
5
10 N.C.
EN
IN
1
2
3
4
5
10 N.C.
9
8
7
6
OUT
OUT
FB
9
8
7
6
OUT
OUT
FB
9
8
7
6
OUT
OUT
FB
MAX8516
MAX8517
MAX8518
IN
IN
IN
N.C.
N.C.
POK
N.C.
N.C.
POR
GND
GND
GND
µMAX
µMAX
µMAX
________________________________________________________________ MaxLm Integrated Produꢁts
1
For prLꢁLngꢄ delLꢂercꢄ and orderLng LnformatLonꢄ please ꢁontaꢁt MaxLm DLreꢁt at 1-888-629-4642ꢄ
or ꢂLsLt MaxLm’s websLte at www.maxLm-Lꢁ.ꢁom
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