tle42994 Infineon Technologies Corporation, tle42994 Datasheet - Page 2

• Manufacturer Part Number: tle42994
• Description: Low Dropout Fixed Voltage Regulator
• Manufacturer: Infineon Technologies Corporation

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
The input capacitor C
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:
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Data Sheet
Overload
Overtemperature
Reverse polarity
I
is recommended for compensation of line influences. The output capacitor C
2
Rev. 1.0, 2008-12-04
Q
TLE42994
is necessary
Overview