Advanced Analog Technology, Inc.
AAT1403B
Details are subject to change without notice
SIX-CHANNEL DIGITAL STILL CAMERA POWER SUPPLY
FEATURES
Complete PWM Power Control Circuitry
Input Voltage Range: 1.4V to 6.5V
Low Start-Up Voltage: 1.4V (CH6)
Separate On/Off Control for CH1~CH6
Supports Synchronous Boost Rectification (CH1,6)
Supports Synchronous Buck Rectification (CH5)
Supports Boost Conversion (CH2, 4)
Supports White LED Driver (CH4)
Supports Inverting Conversion (CH3)
Totem Pole Output
Short Circuit Protection
VQFN40 and LQFP48 Package
Oscillator Frequency: 500 kHz (±15%)
GENERAL DESCRIPTION
The AAT1403B provides an integrated six-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 and output driver. The under-voltage protection,
oscillator, short circuit protection and voltage reference
circuit are the common features for the six channels.
In addition to two boost conversions and one inverting
conversion, AAT1403B also has three synchronous
rectifiers.
APPLICATIONS
Digital Cameras
CCD Imaging Devices
Camcorders
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Advanced Analog Technology, Inc
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