Type

Package

TLE 4287 G

PG-DSO-14

5-V Voltage Regulator

TLE 4287 G

Data Sheet

1

Rev. 1.4, 2009-01-12

Features

•

Output voltage tolerance

≤ ±2%

•

Very low standby current consumption

•

Input voltage up to 42 V

•

Reset function down to 1 V output voltage

•

Adjustable reset time

•

On/Off logic

•

Overtemperature protection

•

Reverse polarity protection

•

Short-circuit proof

•

Very wide temperature range

•

Very small output capacitor

•

Green Product (RoHS compliant)

•

AEC Qualified

Functional Description

The TLE 4287 G is a monolithic integrated 5 V voltage regulator in PG-DSO-14

package. It supplies an output current

I

incorporates temperature protection which turns off the device at overtemperature.

The input voltage

V

Therefore a reference voltage, which is kept highly accurate by resistance adjustment,

is compared via a control amplifier to a voltage that is proportional to the output voltage.

The control amplifier drives the base of the series transistor by a buffer.

A comparator in the reset-generator block compares a reference voltage that is

independent of the input voltage to the scaled-down output voltage. In the case of an

output voltage

V

generated by setting the reset output LOW. The reset delay time can be set by choosing

the external capacitor over a wide range. When the output voltage rises above

V

the reset delay capacitor is charged again. As soon as the delay capacitor voltage

reaches the upper switching threshold the reset output pin is set HIGH again.