Unisonic Technologies U8021
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.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 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 U8021L-S14-T U8021L-S14-R Halogen Free U8021G-S14-T U8021G-S14-R Package SOP-14 SOP-14 Packing Tube Tape Reel Copyright © 2013 Unisonic Technologies Co., Ltd 1 of 6 QW-R502-A13.a Free Datasheet U8021
● PIN CONFIGURATION Preliminary CMOS IC
● PIN
DESCRIPTION
PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 PIN NAME BST OCS COMP FB LDOG LDFB GND VCC NC DRV DL GND PN DHDESCRIPTION
Boost input for top gate drive bias.