P-DSO-14-8

5-V Voltage Regulator

TLE 4287 G

Data Sheet Version 1.3

1

2001-09-12

Features

• Output voltage tolerance

≤ ± 2%

• Very low standby current consumption

• Input voltage up to 42 V

• Reset function down to 1 V output voltage

• ESD protection up to 2000 V

• Adjustable reset time

• On/Off logic

• Overtemperature protection

• Reverse polarity protection

• Short-circuit proof

• Very wide temperature range

• Very small output capacitor

New type

Functional Description

The TLE 4287 G is a monolithic integrated 5 V voltage regulator in P-DSO-14-8

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

Q

≥ 4.5 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.

Type

Ordering Code

Package

Q67006-A9286

P-DSO-14-8 (SMD)