L6221C

July 2003

QUAD DARLINGTON SWITCH

®

.

FOUR NON INVERTING INPUTS WITH

ENABLE

.

OUTPUT VOLTAGE UP TO 60 V

.

OUTPUT CURRENT UP TO 1.8 A

.

VERY LOW SATURATION VOLTAGE

.

TTL COMPATIBLE INPUTS

.

INTEGRAL FAST RECIRCULATION DIODES

DESCRIPTION

The L6221 monolithic quad darlington switch is de-

signed for high current, high voltage switching appli-

cations. Each of the four switches is controlled by a

logic input and all four are controlled by a common

enable input. All inputs are TTL-compatible for direct

connection to logic circuits.

Each switch consists of an open-collector darlington

transistor plus a fast diode for switching applications

with inductive device loads. The emitters of the four-

switches are commoned. Any number of inputs and

outputs of the same device may be paralleled.

Three versions are available : the L6221C mounted

in a Powerdip 12 + 2 + 2 package and the L6221CN

mounted in a 15--lead Multiwatt package, the

L6221CD in SO16+2+2 package.

Multiwatt 15

SO16 + 2 + 2

ORDERING NUMBERS :L6221C

(Powerdip 12+2+2)

L6221CN (Multiwatt 15 )

L6221CD (SO16+2+2)

BLOCK DIAGRAM

Powerdip 12 + 2 + 2

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