AP1522
Step-Up DC/DC Converter


This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev. 1.0 May. 5, 2005
1/8
„ Features

- High Efficiency: 84% Typical
- 36V High Output Voltage
- Fast 1MHz Switching Frequency
- Low Profile SOT23-5 Pb-Free Packaging

„ Applications

- Cellular Phones
- PDAs, Handhelp Computers
- Digital Cameras
- LCD Bias Voltage, Battery Backup
-
„ General Description

The AP1522 is a step-up DC/DC converter in a
5-Lead low profile SOT23-5 package. The AP1522
switches at 1MHz that allows the use of tiny
external components. A low 1.25V feedback voltage
minimizes power loss in the current setting resistor
for better efficiency.




„ Pin Assignments

V
IN
SHDN
SW V
SS
FB
Top View
SOT23-5L




„ Pin Descriptions

Name Description
SW
Switch Pin. Connect inductor/diode
here. Minimize trace area at this pin
to reduce EMI.
V
SS
GND pin
FB
Feedback Pin. Reference voltage is
1.25V.
SHDN
Shutdown Pin. Tie to 0.6V or higher
to enable device；0.5Vor less to
disable device.
V
IN

Input Supply Pin. Must be locally
bypassed.

„ Ordering Information


Package
W: SOT23-5L
AP1522 X X
Packing
Blank : Tube
A : Taping