P-TO252-5-1

P-TO263-5-1

Low Drop Voltage Tracker

TLE 4251

Data Sheet Rev. 2.4

1

2001-05-07

Features

• Output tracking tolerance

≤ ± 0.2%

• 400 mA output current capability

• Enable Function

• Very low current consumption in OFF mode

• Wide operation range: up to 40 V

• Wide temperature range: – 40

• Output protected against short circuit

• Overtemperature protection

• Reverse polarity proof

Type

Ordering Code

Package

TLE 4251 D

Q67006-A9439

P-TO252-5-1

TLE 4251 G

Q67006-A9529

P-TO263-5-1

Functional Description

The TLE 4251 is a monolithic integrated low-drop voltage tracker in the very small SMD

package P-TO252-5-1. It is designed to supply e.g. sensors under the severe conditions

of automotive applications. Therefore the device is equipped with additional protection

functions against over load, short circuit and reverse polarity.

Supply voltages up to 40 V are tracked to a reference voltage given to the adjust input

via an external resistor.

The output is able to drive loads up to 400 mA while it follows e.g. the 5 V output of a

main voltage regulator within an accuracy of 0.5%. For loads up to 300 mA the tracking

accuracy is 0.2%.

The TLE 4251 can be switched in stand-by mode via the enable EN input which causes

the current consumption to drop to very low values. This feature makes the IC suitable

for low power battery applications.