Semiconductor Group

3

1998-02-01

TLE 5203

Pin Definitions and Functions

Circuit Description

Input Circuit

The control inputs consist of TTL/CMOS-compatible Schmitt triggers with hysteresis.

Buffer amplifiers are driven by these stages and convert the logic signal into the

necessary form for driving the power output stages.

Output Stages

The output stages form a switched H-bridge. Protective circuits make the outputs short-

circuit proof to ground and to the supply voltage throughout the operating range. Positive

and negative voltage spikes, which occur when switching inductive loads, are clamped

by integrated power diodes.

Pin No.

Symbol

Function

1Q1

Output of channel 1; Short-circuit proof, free-wheeling

diodes integrated for inductive loads

2EF

Error flag; TTL/CMOS-compatible output for error detection

(open drain)

3

I1

Control input 1; TTL/CMOS-compatible

4GND

Ground; connected internally to cooling fin

5

I2

Control input 2; TTL/CMOS-compatible

6

V

S

Supply voltage; wire with capacitor matching load

7Q2

Output of channel 2; Short-circuit proof, free-wheeling

diodes integrated for inductive loads