AAT7652数据手册AAT中文资料规格书

描述 Description

\tThe AAT7652 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 when compared to conventional controllers in battery design. The AAT7652 has four current mode PWM converters and one voltage mode PWM converter. Each current-mode channel has on-chip synchronous power FETs. The five channels include:


\tCH1: Boost/buck DC-DC converter which can activate PWM function at 1.6V when it is configured as a boost converter.


\tCH2: Boost/buck selectable DC-DC converter.


\tCH3: Buck DC-DC converter.


\tCH4: Buck DC-DC converter.


\tCH5: HV boost DC-DC converter with internal power FET for the white LEDs.

特性 Features

• Complete PWM Power Control Circuitry
• Input Voltage Range: 1.6V to 5.5V
• Low Start-Up Voltage: 1.6V
• Internal Soft-Start for All Channels
• True Shutdown for CH2
• Internal Compensation for CH3 and CH4
• Overload Protection
• Fixed 1MHz Switching Frequency
• Compact 40-Pin 5mm x 5mm Thin QFN Package

应用 Application

• Digital Still CamerasDigital VideosPDAsPortable Devices