MICREL MIC2981BN, MIC2981BWM, MIC2982BN, MIC2982BWM Datasheet

MIC2981/2982 Micrel

MIC2981/2982

High-Voltage High-Current Source Driver Array

Preliminary Information

General

The MIC2981/82 is an 8-channel, high-voltage, high-current
source driver array ideal for switching high-power loads from
logic-level TTL, CMOS, or PMOS control signals.

These drivers can manage multiple loads of up to 50V and
500mA, limited only by package power dissipation.

Micrel’s MIC2981/82 features inputs compatible with 5V TTL
and 5V to 15V CMOS or PMOS logic outputs. Micrel’s dual­marked device replaces either UDN2981 or UDN2982 de­vices.

The MIC2981/82 is available in the 18-pin plastic DIP and 18­lead wide SOP package. Both devices operate in the indus­trial temperature range.

Functional Diagrams

Features

• Output voltage to 50V

• Output current to 500mA

• Transient-protected outputs

• Integral clamp diodes

• TTL, CMOS, or PMOS compatible inputs

Applications

• Relay and solenoid switching

• Stepping motor

• LED and incandescent displays

Ordering Information

Part Number Temperature Range Package

MIC2981BN/
MIC2982BN* –40°C to +85°C 18-pin DIP

MIC2981BWM/
MIC2982BWM* –40°C to +85°C 18-pin wide SOP

* Orders for MIC2981BN or MIC2982BN will be filled with dual-marked

MIC2981/82BN. Orders for MIC2981BWM or MIC2982BWM will be
filled with dual-marked MIC2981/82BWM.

IN1

IN2

IN3

IN4–IN7

IN8

Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 [phone] • fax + 1 [phone] • http://www.micrel.com

4

S

MIC2981
MIC2982

OUT1

OUT2

OUT3

OUT4–OUT7

OUT8

GNDV

V

S

20k

1.8k

IN

1.5k

GND

Typical MIC2891/2982 Source Driver

800Ω

OUT

November 1999 1 MIC2981/2982

MIC2981/2982 Micrel

Pin Configuration

1IN1 OUT118
2IN2 OUT217
3IN3 OUT316
4IN4 OUT415
5IN5 OUT514
6IN6 OUT613
7IN7 OUT712
8IN8 OUT811

Pin Description

Pin No. Pin No. Pin Name Pin Function

1–8 IN1–IN8 Input 1 through Input 8: Base drive to driver input transistor.

9V

10 GND Ground

11–18 OUT8–OUT1 Output 8 through Output 1: Emitter of Darlington driver output.

9V

S

GND10

18-Pin DIP (N)

18-Pin Wide SOP (WM)

S

Supply Input

MIC2981/2982 2 November 1999