TLE4678 Datasheet, PDF (3/31 Pages) Infineon Technologies AG – Low Drop Out Linear Voltage Regulator 5 V Fixed Output Voltage

Low Drop Out Linear Voltage Regulator
5 V Fixed Output Voltage
TLE4678
1
Overview
Features
• Output Voltage 5 V ± 2%
• Current Capability 200 mA
• Ultra Low Current Consumption
• Very Low Dropout Voltage
• Watchdog Circuit for Monitoring a Microprocessor
with Programmable Load-dependent Activating Threshold
• Reset Circuit Sensing the Output Voltage
with Programmable Switching Threshold and Delay Time
• Reset Output Active Low Down to V_Q = 1 V
• Separated Reset and Watchdog Output
• Excellent Line Transient Robustness
• Maximum Input Voltage -42 V ≤ V_I ≤ +45 V
• Reverse Polarity Protection
• Short Circuit Protected
• Overtemperature Shutdown
• Automotive Temperature Range -40 °C ≤ T_j ≤ 150 °C
• Available in a small thermally enhanced PG-SSOP-14 package
• Green Product (RoHS Compliant)
• AEC Qualified
PG-DSO-14
PG-SSOP-14
Description
The TLE4678 is a monolithic integrated low dropout fixed output voltage regulator for loads up to 200 mA. An input
voltage of up to 45 V is regulated to an output voltage of 5 V. The integrated reset and watchdog function, as well
as several protection circuits, combined with a wide operating temperature range offered by the TLE4678 make it
suitable for supplying microprocessor systems in automotive environments.
The watchdog circuitry will be disabled in case the output current drops below a programmable threshold, enabling
a microcontroller to switch in stand-by mode. Modifying the reset threshold is possible by an optional resistor
divider.
The TLE4678 is available in a PG-DSO-14 package which makes it pin-compatible to the TLE4278 as well as in
a small thermally enhanced PG-SSOP-14 exposed pad package.
Type
TLE4678GM
TLE4678EL
Datasheet
Package
PG-DSO-14
PG-SSOP-14
3
Marking
TLE4678GM
TLE4678
Rev. 1.1, 2009-08-27