SI9912 View Datasheet(PDF) - Vishay Semiconductors

Part Name

Description

Manufacturer

SI9912

Half-Bridge MOSFET Driver for Switching Power Supplies

Vishay Semiconductors 

Si9912

Vishay Siliconix

PIN CONFIGURATION

OUTH 1

GND 2

IN 3

SD 4

SO-8

Top View

8 VS

7 BOOT

6 VDD

5 OUTL

PIN DESCRIPTION

Pin Number Name

Function

1

OUTH

Output drive for upper MOSFET.

2

GND

Ground supply

3

IN

CMOS level input signal. Controls both output drives.

4

SD

Shutdown pin

5

OUTL

Output drive for lower MOSFET.

6

VDD

Input power supply

7

BOOT

Floating bootstrap supply for the upper MOSFET

8

VS

Floating GND for the upper MOSFET. VS is connected to the buck switching node and the source side of the upper MOSFET.

ORDERING INFORMATION

Part Number

Temperature Range

Si9912DY

Si9912DY-T1

Si9912DY-T1—E3 (Lead (Pb)-Free)

−40 to 85_C

Package

Bulk

Tape and Reel

Eval Kit

Si9912DB

TYPICAL WAVEFORMS

Driver On Switch Delay

VS

CL = Si4412DY

Temperature Range

−40 to 85_C

Board Type

Surface Mount

Driver Off Switch Delay

VS

CL = Si4412DY

OUTH

OUTL

IN

www.vishay.com

4

See Figure 1

Si9912 tr, tf, tpd

OUTH

OUTL

See Figure 1

IN

Si9912 tr, tf, tpd

Document Number: 71311

S-40134—Rev. B, 16-Feb-04

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