Advanced Analog Technology, Inc.


– 台灣類比科技股份有限公司 –
– Advanced Analog Technology, Inc. –
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AAT1401
Details are subject to change without notice.

FOUR-CHANNEL DIGITAL STILL CAMERA POWER SUPPLY

FEATURES
z Complete PWM Power Control Circuitry
z Input Voltage Range: 3.0V to 6.5V (CH1~CH4)
z Low Start-Up Voltage: 1.4V (CH4)
z Separate On/Off Control for CH1~CH4
z Supports Synchronous Boost/Buck Rectification
(CH1)
z Supports Synchronous Boost Rectification (CH4)
z Supports Boost/Buck Conversion (CH2)
z Supports Boost Conversion (CH3)
z Supports White LED Driver (CH3)
z Totem-Pole Output
z Short Circuit Protection
z Wide Operating Frequency: 100 kHz to 1MHz
z LQFP48 and VQFN40 Package

APPLICATIONS
z Camcorders
z Digital Cameras
z CCD Imaging Devices







GENERAL DESCRIPTION
The AAT1401 provides an integrated four channel
pulse-width-modulation (PWM) solution for the power
supply of DC-DC converter; this device offers system
engineer flexibility to tailor-make the power supply
circuitry for specific applications. Each channel contains
its own error amplifier, PWM comparator, dead-time
control (DTC) and output driver. The under-voltage
protection, oscillator, short circuit protection and voltage
reference circuit are the common features for the four
channels.
In addition to a boost conversion, AAT1401 also has two
synchronous rectification systems with alternatives of a
synchronous boost or buck on channel one (CH1) and a
boost or buck conversion on channel two (CH2).