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U8021 Schematic ( PDF Datasheet ) - Unisonic Technologies

Teilenummer U8021
Beschreibung VOLTAGE MODE PWM CONTROLLER
Hersteller Unisonic Technologies
Logo Unisonic Technologies Logo 




Gesamt 6 Seiten
U8021 Datasheet, Funktion
UNISONIC TECHNOLOGIES CO., LTD
U8021
Preliminary
VOLTAGE MODE PWM
CONTROLLER WITH LINEAR
POWER REGULATOR
DESCRIPTION
The UTC U8021 provides the control and protection features
necessary for a synchronous buck converter and a linear
regulator in high performance graphic card applications.
The UTC U8021 is designed to directly drive the high and low
MOSFETs of the buck converter. It allows the converter to
operate with 4V~25V power rail and as low as 0.5V output. The
UTC U8021 is capable to drive a N-type MOSFET in a linear
regulator with as low as 0.5V output.
The UTC U8021 features soft-start, UVLO, and OCP. The
UTC U8021 monitors the output current by using the Rdson of the
low MOSFET in the buck converter that eliminates the need for a
current sensing resistor.
FEATURES
* 4V~25V power rails
* Internal LDO
* 1.5A gate drive current
* Adaptive non-overlapping gate drives provide shoot-through
protection for MOSFETs
* Programmable output voltages
* Internal soft start
* Under voltage lockout
* Short circuit protection
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
U8021L-S14-T
U8021G-S14-T
U8021L-S14-R
U8021G-S14-R
Package
SOP-14
SOP-14
CMOS IC
Packing
Tube
Tape Reel
www.unisonic.com.tw
Copyright © 2013 Unisonic Technologies Co., Ltd
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QW-R502-A13.a
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U8021 Datasheet, Funktion
U8021
Preliminary
TYPICAL APPLICATION CIRCUIT
CMOS IC
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
6 of 6
QW-R502-A13.a
Free Datasheet http://www.Datasheet4U.com

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