ADT7220
General Description
The ADT7220 is a power supply chip with 3.3V
regulated output. It is composed of one PWM
controller and one LDO regulator. It provides the
pure and excellent regulated output voltage.
1
A33
2
3
6
5
4
Package outline of the ADT7220
Features
• Input voltage range : 7V to 15V
• Regulated output voltage : 3.3V
• 350mA output load current available
• Externally composed LDO pass transistor
• 500kHz fixed frequency internal oscillator
• Over voltage protection
Applications
• DC-DC Converter for 3.3V output
• CCD Camera module
• Navigation & Portable Devices
• PWM controller with built-in compensation components
• Small outline SOT-26 package (2.9mm x 1.6mm body)
Typical Application Circuit
VIN
(12V)
C2
VIN
DRV
Q1
A33
GND
OUT
C3
OUT
PWM
FB
(ADT7220)
L1
U1
C1
* This specifications are subject to be changed without notice
Jun. 16. 2008 / Rev. 0.1
1/6
http://www.ad-tech.co.kr
ADTECH [ ADTECH ]
