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APW7061

Anpec Electronics Coropration
Part Number APW7061
Manufacturer Anpec Electronics Coropration
Description Synchronous Buck PWM Controller
Published Nov 17, 2008
Detailed Description APW7061 Synchronous Buck PWM Controller Features • Fast Transient Response - 0~85% Duty Ratio www.DataSheet4U.com • Exc...
Datasheet PDF File APW7061 PDF File

APW7061
APW7061

Overview
APW7061 Synchronous Buck PWM Controller Features • Fast Transient Response - 0~85% Duty Ratio www.
DataSheet4U.
com • Excellent General Description The APW7061 is a voltage mode, synchronous PWM cont roller which drives dual N-c hannel MOSFETs .
It integrates t he c ont rols, monitoring and protec tion funct ions into a single package, which provides one c ontrolled power output s wit h under-voltage and over-current protections.
APW7061 provides excellent regulation for output load variation.
An internal 0.
8V temperature-compensated reference voltage is designed to meet the various low output voltage applications.
A power-on-reset (POR) circuit limits the VCC minimum opearting s upply voltage to ass ure the c ontroller working well.
Over current protec tion is achieved by monit oring t he volt age drop ac ros s the low s ide MOSFET, eliminating the need for a current sensing resistor and short circuit condition is detected through the FB pin.
The over-current protection triggers the soft -start function until the fault events be removed, but Under-voltage protection will shutdown IC directly.
Pull the COMP pin below 0.
4V will shutdown t he controller, and both gate drive signals will be low.
Output Voltage Regulation - 0.
8V Internal Reference - ±1% Over Line Voltage and Temperature • • • • • • Internal Soft-Start - Typical 2mS Over Current Protection - Sense Low-side MOSFET’s RDS(ON) Under Voltage Lockout Small Converter Size - 250kHz Free-running Oscillator 8-lead SOIC Package Lead Free Available (RoHS Compliant) Applications • • • • • Graphic Cards Memory Power Supplies DSL or Cable MODEMs Set Top Boxes Low-Voltage Distributed Power Supplies Pinouts VCC FB COMP GND 1 2 3 4 8 7 6 5 LGATE BOOT UGATE PHASE ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders.
C opyright © ANPEC Electronics C orp.
Rev.
A.
7 - ...


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