AT1305
Preliminary Product Information
PFM Step-Up DC/DC Converter with LDO
Features
•
0.8V Low Start-Up Input Voltage
•
Up to 90%Efficiency
•
Adjustable 100mA Output with 1 Alkaline Cell
or 200mA Output with 2 Alkaline Cell
Battery input.
•
1.8V/3.0V/3.3V/300mA Output with USB
Power input.
•
Small Number of External Components needed
• Load Disconnects from Input in Shutdown
•
Power good output
•
32µA Quiescent(Switch OFF) Supply current
•
1µA Shutdown Mode Supply current
•
8-Pin TSSOP package
General Description
The AT1305 is a PFM step-up DC/DC converter
with LDO for applications using 1 Cell or 2 Cell
Alkaline battery and USB applications. Besides,
the 32µA low quiescent current together with high
efficiency maintains long battery life time. It
provides a constant output voltage for inputs that
vary above and below the output voltage.
Applications
•
MP3
•
Power source for battery-powered equipment
•
Power source for cameras, camcorders, VCRs,
PDAs, electronic data banks, and hand-held
Communication equipment
Block Diagram
Aimtron reserves the right without notice to change this circuitry and specifications.
7F, No.9,PARK AVENUE. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
Fax: 886-3-563-0879
WWW:
http://www.aimtron.com.tw
2/8/2006 REV:1.1
Email:
service@aimtron.com.tw
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AIMTRON [ AIMTRON TECHNOLOGY ]
