BOOT

SO-8

5

6

7

8

Top View

2

3

4

1

UGATE

PHASE

PWM

GND

LGATE

SiP41109

SiP41110

SiP41109/41110

Vishay Siliconix

New Product

www.vishay.com

4

Document Number: 73023

S-51104—Rev. A, 13-Jun-05

TIMING WAVEFORMS

PWM

UGate

LGate

10%

90%

50%

90%

10%

10%

10%

50%

90%

90%

2.5 V

Phase

PIN CONFIGURATION AND TRUTH TABLE

TRUTH TABLE

PWM

UGATE

LGATE

L

L

H

H

H

L

Tri-State

L

L

ORDERING INFORMATION

Part Number

Temperature Range

Marking

SiP41109DY-T1—E3

−40 to 85_C

41109

SiP41110DY-T1—E3

−40 to 85_C

41110

Eval Kit

Temperature Range

SiP41109DB

−40 to 85_C

SiP41110DB

−40 to 85_C

PIN DESCRIPTION

Pin Number

Name

Function

1

UGATE

8-V high-side MOSFET gate drive

2

BOOT

Bootstrap supply for high-side driver. The bootstap capacitor is connected between BOOT and PHASE.

3

PWM

Input signal for the MOSFET drivers and tri-state enable

4

GND

Ground

5

LGATE

Synchronous or low-side MOSFET gate drive

6

12-V supply. Connect a bypass capacitor w1 mF from here to ground

7

8-V Voltage Regulator Output. Connect a bypass capacitor w1 mF from here to ground

8

PHASE

Connection to source of high-side MOSFET, drain of the low-side MOSFET, and the inductor