AAT3237B Advanced Analogic Technologies, Inc., AAT3237B Datasheet - Page 2

• Manufacturer Part Number: AAT3237B
• Description: 300ma Micropower? Ldo Linear Regulator With Power-ok
• Manufacturer: Advanced Analogic Technologies, Inc.

Pin Descriptions
Pin Configuration
2
Pin #
2, 5
1
3
4
6
Symbol
GND
POK
OUT
EN
IN
Function
Input voltage pin; should be decoupled with 1µF or greater capacitor.
Ground connection pin.
Enable pin; this pin should not be left floating. When pulled low, the PMOS
pass transistor turns off and all internal circuitry enters low-power mode, con-
suming less than 1µA.
Power-OK output. This open-drain output is low when OUT is out of regula-
tion. It is low whenever the IC is in shutdown (EN is low). Connect a pull-up
resistor from POK to OUT.
Output pin; should be decoupled with 2.2µF ceramic capacitor.
GND
EN
IN
1
2
3
(Top View)
SOT23-6
LDO Linear Regulator with Power-OK
5
4
6
OUT
GND
POK
300mA MicroPower™
AAT3237B
3237B.2006.01.1.3