Micrel

MIC4103/4104

October 2007

2

M9999-100107-B

Ordering Information

Part Number

Input

Junction Temp. Range

Package

MIC4103YM

CMOS

–40° to +125°C

8-Pin SOIC

MIC4104YM

TTL

–40° to +125°C

8-Pin SOIC

MIC4103YML (coming soon)

CMOS

–40° to +125°C

8-Pin 3x3 MLF

®

MIC4104YML (coming soon)

TTL

–40° to +125°C

8-Pin 3x3 MLF

®

Pin Configuration

8-Pin SOIC (M)

8-Pin 3mm × 3mm MLF

Pin Description

Pin Number

Pin Name

Pin Function

1

VDD

Positive Supply to lower gate drivers. Decouple this pin to VSS (Pin 7).

Bootstrap diode connected to HB (pin 2).

2

HB

High-Side Bootstrap supply. External bootstrap capacitor is required. Connect

positive side of bootstrap capacitor to this pin. Bootstrap diode is on-chip.

3

HO

High-Side Output. Connect to gate of High-Side power MOSFET.

4

HS

High-Side Source connection. Connect to source of High-Side power MOSFET.

Connect negative side of bootstrap capacitor to this pin.

5

HI

High-Side input.

6

LI

Low-Side input.

7

VSS

Chip negative supply, generally will be ground.

8

LO

Low-Side Output. Connect to gate of Low-Side power MOSFET.