ZXGD3101N8TC datasheet(4/14 Pages) DIODES

4 / 14 page

ZXGD3101N8

Document Number DS31945 Rev. 1 - 2

4 of 14

www.diodes.com

June 2010

ZXGD3101N8

A Product Line of

Diodes Incorporated

SYNCHRONOU S R E CTIFIER CONTROLLER

Schematic Symbol and Pin Out Details

Differential

amplifier

High volt

comparator

Threshold

voltage

control

Driver

Gate drive

amplitude

control

Turn-on/off

control

GATEH

GATEL

Vcc

GND

DRAIN

REF

BIAS

Pin No.

Symbol

Description and function

No connection

This pin can be connected to GND

REF

Reference

This pin is connected to VCC via resistor, RREF. RREF should be selected to source approximately 3mA into this pin.

(Note 8)

GATEL

Gate turn off

This pin sinks current, ISINK, from the synchronous MOSFET Gate.

GATEH

Gate turn on

This pin sources current, ISOURCE, to the synchronous MOSFET Gate.

VCC

Power Supply

This is the supply pin. It is recommended to decouple this point to ground closely with a ceramic capacitor.

GND

Ground

This is the ground reference point. Connect to the synchronous MOSFET Source terminal.

BIAS

Bias

This pin is connected to VCC via resistor, RBIAS. RBIAS should be selected to source 1.6 times IREF into this pin.

(Note 9)

DRAIN

Drain connection

This pin connects directly to the synchronous MOSFET Drain terminal.

Notes:

8. REF pin should be assumed to be at GND +0.7V.

9. BIAS pin should be assumed to be at GND +0.3V.

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