Datasheet
General Description
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.
The output voltage can be set from 0.5V to (V
IN
- 0.2V)
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.
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.
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.
Applications
Servers
Storage
Networking
Base Stations
Optical Modules
Features
♦ 1.425V to 3.6V Input Voltage Range
♦ Guaranteed 200mV Dropout at 1A Output Current
♦ ±1.4% Output Accuracy Over Load, Line, and
Temperature (0°C to +85°C), ±0.6% Initial Accuracy
♦ Compatible with Ceramic Capacitors
♦ Fast Transient Response
♦ 320µA Operating Supply Current
♦ <25µA Shutdown Supply Current
♦ Short-Circuit Protection
♦ Thermal-Overload Protection
♦ Soft-Start Limits Inrush Current
MAX8516/MAX8517/MAX8518
1.425V to 3.6V Input, 1A,
0.2V Dropout LDO Regulators
________________________________________________________________
Maxim Integrated Products
1
Ordering Information
19-3188; Rev 2; 9/09
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
EVALUATION KIT
AVAILABLE
PART TEMP RANGE PIN-PACKAGE
MAX8516EUB -40°C to +85°C 10 µMAX
MAX8517EUB -40°C to +85°C 10 µMAX
MAX8517EUB/V -40°C to +85°C 10 µMAX
MAX8518EUB -40°C to +85°C 10 µMAX
1
2
3
4
5
10
9
8
7
6
N.C.
OUT
OUT
FBN.C.
IN
IN
EN
MAX8516
µMAX
TOP VIEW
GNDN.C.
1
2
3
4
5
10
9
8
7
6
N.C.
OUT
OUT
FBPOK
IN
IN
EN
MAX8517
µMAX
GNDN.C.
1
2
3
4
5
10
9
8
7
6
N.C.
OUT
OUT
FBN.C.
IN
IN
EN
MAX8518
µMAX
GNDPOR
Pin Configurations
MAX8516
MAX8517
MAX8518
1µF
4.7µF
INPUT
1.425V TO 3.6V
OUTPUT
0.5V TO (V
IN
- 0.2V), 1A
POWER-ON RESET
POWER-OK
ON
OFF
IN_
POR (MAX8518)
POK (MAX8517)
EN GND
FB
OUT_
Typical Operating Circuit
Post Regulators
Notebooks
PDAs
ATE
1
0
µ
M
A
X
3
m
m
x
5
m
m
µMAX is a registered trademark of Maxim Integrated Products, Inc.
/V Denotes an automotive qualified part.