TLE42994

Overview

Data Sheet

2

Rev. 1.1, 2009-05-19

the external delay capacitor. The additional sense comparator provides an early warning function: Any voltage

(e.g. the input voltage) can be monitored, an under-voltage condition is indicated by setting the comparator’s

output to low. The TLE42994GM (PG-DSO-14 package) and TLE42994E (PG-SSOP-14 package) include

additionally an Enable function permitting enabling/disabling the regulator. In case the regulator is disabled it

consumes less current than 1 µA.

Dimensioning Information on External Components

for the stability of the control loop.

Circuit Description

The control amplifier compares a reference voltage to a voltage that is proportional to the output voltage and drives

the base of the series transistor via a buffer. Saturation control as a function of the load current prevents any

oversaturation of the power element. The component also has a number of internal circuits for protection against:

•

Overload

•

Overtemperature

•

Reverse polarity