A7533 Datasheet | AiT

Ai T Semiconductor Inc. .ait-ic. 0.85V STARTUP, 1MHZ, 300m A IOUT SYNCHRONUS BOOST STEP-UP DC-DC CONVERTER DESCRIPTION The A7533 is a step-up converter that provides a boosted output voltage from a low voltage source. Because of its proprietary design, it starts up at a very low input voltage down to 850m V, making it an ideal choice for single cell alkaline/ Ni MH battery operations. A switching frequency of 1MHz minimizes solution footprint by allowing the use of tiny, low profile inductors and ceramic capacitors. The current mode PWM design is internally pensated, reducing external parts count. The A7533 is available in SOT-25 and SOT-89-3 Package. Features - - - Up to 95% Efficiency Output voltage accuracy ±3% 1MHz Switching Frequency allows small inductor and output cap - Input boost-strapping allows using small or no input cap - Low VIN Start-up Voltage down to 850m V Ideal for Single Alkaline Cell operations - - - Maximum Output Current up to 300m A Low Noise PWM control Internally pensated Current Mode Control Internal Synchronous Rectifier Logic Control Shutdown (IQ < 1u A) Available in SOT-25 and SOT-89-3 Package. ORDER INFORMATION - - - Package Type SOT-25 E5 Part Number A7533E5R-XX A7533E5VR-XX A7533K3R-XX SOT-89-3 K3 A7533K3VR-XX XX=Output , ADJ=Adjustable Note V: Green Package R : Tape & Reel Ai T provides all Pb free products Suffix “ V “ means Green Package APPLICATION - - - - - One to Three Cell Battery Operated Devices Medical Instruments Bluetooth Headsets Flash-Based MP3 Players Noise Canceling Headphones TYPICAL APPLICATION NOTE: Input capacitor (C IN = 0.47u F) and Output capacitor (C OUT ≥ 4.7u F) are remended in all application circuit. REV1.1 - JUL 2010 RELEASED, JUL 2011 REVISED - -1- Ai T Semiconductor Inc. .ait-ic. 0.85V STARTUP, 1MHZ, 300m A IOUT SYNCHRONUS BOOST STEP-UP DC-DC CONVERTER PIN...