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A7508

AiT Semiconductor
Part Number A7508
Manufacturer AiT Semiconductor
Description 1.3MHz MICROPOWER SYNCHRONOUS DC-DC CONVERTER BOOST
Published May 25, 2015
Detailed Description AiT Semiconductor Inc. www.ait-ic.com A7508 DC-DC CONVERTER BOOST (STEP-UP) 800mA, 1.3MHz MICROPOWER SYNCHRONOUS DESCR...
Datasheet PDF File A7508 PDF File

A7508
A7508

Overview
AiT Semiconductor Inc.
www.
ait-ic.
com A7508 DC-DC CONVERTER BOOST (STEP-UP) 800mA, 1.
3MHz MICROPOWER SYNCHRONOUS DESCRIPTION The A7508 is a synchronous, fixed frequency, step-up DC/DC converters delivering high efficiency in a 6-lead SOT package.
Capable of supplying 5V at 800mA from a Lithium Battery input, the devices contain an internal NMOS switch and PMOS synchronous rectifier.
A switching frequency of 1.
3MHz minimizes solution footprint by allowing the use of tiny, low profile inductors and ceramic capacitors.
The current mode PWM design is internally compensated, reducing external parts count.
The A7508 features automatic shifting to power saving PFM Mode operation at light loads.
Antiringing control circuitry reduces EMI concerns by damping the inductor in discontinuous mode, and the devices feature low shutdown current of under 1μA.
The A7508 is available in SOT-26 Package FEATURES  Up to 93% Efficiency  1.
3MHz Fixed Frequency Switching  Internal Synchronous Rectifier  2.
5V to 5V Output Range  Automatic PFM/PWM Mode Operation  Logic Controlled Shutdown (<1μA)  Antiringing Control Minimizes EMI  Tiny External Components  Available in SOT-26 Package.
APPLICATION  MP3/4 PMP  Digital Camera  LCD Bias Voltage  Handheld Instruments  Wireless Handsets  GPS Receivers ORDER INFORMATION TYPICAL APPLICATION Package Type Part Number SOT-26 Note E6 A7508E6R-XXX A7508E6VR-XXX XXX=Output ,ADJ=Adjustable V: Halogen free Package R : Tape & Reel AiT provides all RoHS products Suffix “ V “ means Halogen free Package Figure 1.
VOUT=3.
3V REV1.
1 - DEC 2011 RELEASED, AUG 2014 UPDATED - Figure 2.
VOUT>4.
5V -1- AiT Semiconductor Inc.
www.
ait-ic.
com PIN DESCRIPTION A7508 DC-DC CONVERTER BOOST (STEP-UP) 800mA, 1.
3MHz MICROPOWER SYNCHRONOUS Pin # 1 2 3 4 5 6 Symbol SW GND FB SHDN VOUT VIN Switch Pin Ground Pin Feedback Pin Top View Function Chip Enable pin.
Active high.
Internal pull high for auto start up Output Pin Startup input Pin REV1.
1 ...


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