AAT1401

Advanced Analog Technology, Inc. AAT1401 Details are subject to change without notice. FOUR-CHANNEL DIGITAL STILL CAMERA POWER SUPPLY FEATURES www.DataSheet4U.com z Complete 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). 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 – ¥xÆWÃþ¤ñ¬ì§ÞªÑ¥÷¦³-½q – – Advanced Analog Technolo...