PG-DSO-8 (exposed pad)

Type

Package

Marking

TLE4247 EL40

PG-DSO-8 (exposed pad)

4247-40

Datasheet

3

Rev. 1.01, 2010-05-04

Constant Current Relay Driver

TLE4247

1Overview

Features

•

Reduces relay hold current to min. 40 mA

•

Functional at low battery voltage.

•

Active freewheeling path using relay integrated freewheeling resistor.

•

Over temperature protection

•

Green Product (RoHScompliant)

•

AEC-Q100 qualified

Description

The TLE4247 is intended to drive relays with a constant current in order to reduce the coil current during relay hold

phase. For relay activation, the IC pass element works as an activated switch for a limited period of time. After the

activation time period has elapsed, the IC reduces the relay coil current to a lower constant value. Different

operation modes allow adequate functionality also at very low or very high battery voltage.

The IC is suited to operate with relay coil inductance, freewheeling resistor, operating voltage and environment

conditions as required in automotive applications. For details see operation range and electrical characteristics

tables.