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TLE4251D

Infineon Technologies AG
Part Number TLE4251D
Manufacturer Infineon Technologies AG
Description Low Drop Voltage Tracker
Published Apr 16, 2005
Detailed Description Low Drop Voltage Tracker TLE 4251 Features • • • • • • • • • Output tracking tolerance ≤ ± 0.2% 400 mA output current ...
Datasheet PDF File TLE4251D PDF File

TLE4251D
TLE4251D

Overview
Low Drop Voltage Tracker TLE 4251 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 °C ≤ Tj ≤ 150 °C Output protected against short circuit Overtemperature protection Reverse polarity proof Ordering Code Q67006-A9439 Q67006-A9529 Package P-TO252-5-1 P-TO263-5-1 P-TO263-5-1 P-TO252-5-1 Type TLE 4251 D TLE 4251 G 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.
Data Sheet Rev.
2.
4 1 2001-05-07 TLE 4251 P-TO252-5-1 P-TO263-5-1 GND 1 5 1 5 I EN ADJ Q AEP02810 I EN GND ADJ Q AEP03119 Figure 1 Pin Configuration (top view) Pin No.
1 2 3 4 5 Symbol I EN GND ADJ Q Function Input voltage Enable, high-active input Ground Adjust; connect to the reference voltage via ext.
resistor or micro-controller port Output voltage; must be blocked by a capacitor CQ ≥ 22 µF, ESR ≤ 3 Ω to GND Data Sheet Rev.
2.
4 2 2001-05-07 TLE 4251 TLE 4251 Saturation Control and Protection Circuit Temperature Control I ADJ EN GND AES02807 Figure 2 Block Diagram Data Sheet Rev.
2.
4 3 2001-05-07 TLE 4251 ...


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