Preliminary Datasheet TLE 6215 G

V5

Page

28.04.2002

6

Electrical Characteristics

Parameter and Conditions

Symbol

Values

Unit

(unless otherwise specified)

min

typ

max

5. Diagnostic Functions

Open load detection voltage

≤ 18 V

(Output OFF)

0.515

6.2

0.585

7.0

V

Open load compare voltage

5

18V

> V

DSC

> 0.65*V

S

V

Open load detection current (Output ON)

100

500

mA

Overload threshold current

≥ 9.5 V

5

A

Overtemperature shutoff threshold

6

Hysteresis

170

10

200

°C

K

Application Description

This IC is specially designed to drive inductive loads (relays, electromagnetic valves). Integrated

clamp-diodes limit the output voltage peak when switching off an inductive load.

For the detection of errors there are two status outputs, which monitor the following errors by logic

levels:

− thermal overload,

− open and short load to ground in active an inactive mode,

− overloading of output (also shorted load to supply) in active mode.

Circuit Description

Input Circuits

The control and enable inputs, all active high, consist of Schmitt triggers with hysteresis. All inputs are

connected with pull-down current sources. Not connected inputs are interpreted as "low“.

Switching Stages

The power outputs consist of a DMOS power transistor with open drain. The output stages are short-

load-protected throughout the operating range. Integrated clamp-diodes limit voltage spikes produced

when inductive loads are discharged.

Protective Circuit

The outputs are protected against current overload. There is no protection against reverse polarity of

the supply voltage.