AAT1415 Datasheet, PDF (1/32 Pages) Advanced Analog Technology, Inc. – FIVE-CHANNEL DC-DC CONVERTER WITH A 2.5V LDO

Advanced Analog Technology, Inc.
May 2008
AAT1415/AAT1415A
Product information presented is for internal use within AAT Inc. only. Details are subject to change without notice.
FIVE-CHANNEL DC-DC CONVERTER WITH A 2.5V LDO
FEATURES
Complete PWM Power Control Circuitry
Input Voltage Range: 1.5 to 5.5V
Low Start-Up Voltage: 1.2V
Independent On / Off Control for All Channels
Internal Soft-Start for All Channels
Power-OK Outputs & Overload Protection
Adjustable Operation Frequency with External
Components Ranging from 100kHz to 1MHz
VQFN-40 5*5 Package Available
APPLICATIONS
Digital Still Cameras
Digital Videos
PDAs
Portable Devices
GENERAL DESCRIPTION
The AAT1415/AAT1415A provides an integrated
5-channel pulse-width-modulation (PWM) solution and
a low noise LDO for the power supply of DC-DC
converter. This device improves performance and size
compared to conventional controllers in battery design.
The AAT1415/AAT1415A has three current mode
PWM converters (CH1, CH2, and CH3) and two
voltage mode PWM converters (CH4 and CH5). Each
current-mode channel has on-chip synchronous power
FETs. The five channels include:
CH1: Boost /buck selectable DC-DC converter, which
activates PWM function at 1.2V when it is configured
as a boost converter.
CH2: Boost / buck selectable DC-DC converter.
CH3: Buck DC-DC converter.
CH4: Boost DC-DC controller for the CCD positive
bias.
CH5: Inverting DC-DC controller for the CCD negative
bias.
PIN CONFIGURATION
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Version 3.00
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