Global Mixed-mode Technology Inc.
AT1362A/B/C
Synchronous Buck Converter With Power Good
Detector & LDO
Features
Operation Voltage 2.5V~6.0V
Oscillation frequency 1MHz
Output Current Maximum 400mA（DC-DC Con-
verter）
Built-In 400mA/LDO
Power Good Indicator with Time Delay Ad-
justable
Built-In Current Limit
Built-In UVLO
Built-In Thermal ShutDown
General Description
The AT1362A/B/C provides complete control for a
DC/DC converter optimized for hight-performance mi-
croprocessor applications. It consists of a synchronous
step-down DC/DC converter and a high-speed LDO
regulator connected in series with the DC/DC con-
verter output. A power good detector and LDO
ON/OFF control is also built-in(metal option). DC/DC
converter is operated on current mode architecture for
excellent line and load transient response. 1MHz op-
eration frequency is allowing the use of small surface
mount inductor and capacitor. The internal synchro-
nous switch increases efficiency and eliminates the
need for an external schottky diode. The AT1362A/B/C
is a family of low-noise synchronous step-down
DC/DC converters that is ideally suited for systems
powered form a 1-cell Li-ion battery or from a 3-cell to
4-cell NiCd, NiMH, or alkaline battery. It can also be
used to USB-based power system.
Applications
Power Supply for Slim Type devices
Ordering Information
Part Number
1362 N
：
Package
TDFN3X3-10,Green
Marking
A:AT1362AN
B:AT1362BN
C:AT1362CN
：
Date Code
*For more marking information, contact our sales representative directly
Pin Assignment
1
2
3
4
5
TDFN3X3-10 (TOP VIEW)
10
9
AT1362A
AT1362B
DC/DC
1.8V
LDO
3.3V
AT1362C
DC/DC
1.2V
LDO
3.3V
AT1362
8
7
6
DC/DC
2.5V
LDO
3.3V
Ver: 1.0
May 22, 2008
TEL: 886-3-5788833
http://www.gmt.com.tw
1
GMT [ GLOBAL MIXED-MODE TECHNOLOGY INC ]
