TLE4268_07 Datasheet, PDF (1/17 Pages) Infineon Technologies AG – 5-V Low Drop Fixed Voltage Regulator Output voltage tolerance ≤ ±2%

5-V Low Drop Fixed Voltage Regulator
TLE 4268
Features
• Output voltage tolerance ≤ ±2%
• Very low current consumption
• Low-drop voltage
• Watchdog
• Settable reset threshold
• Overtemperature protection
• Reverse polarity protection
• Short-circuit proof
• Suitable for use in automotive electronics
• Wide temperature range
• Green Product (RoHS compliant)
• AEC Qualified
P-DSO-8-3, -6, -7, -8, -9
Functional Description
This device is a 5-V low-drop fixed-voltage regulator. The
P/PG-DSO-20-1,-6,-7,-9,-14,-
maximum input voltage is 45 V. It can deliver an output
current of at least 180 mA. The IC is short-circuit proof
and features temperature protection that disables the
circuit in the event of impermissibly high temperatures. The watchdog function is
disabled as a function of the load, so that a controller is not interrupted during sleep
mode by a watchdog reset.
Application Description
The IC regulates an input voltage V_I in the range 5.5 V < V_I < 45 V to V_Q,nom = 5.0 V. In
the event of an output voltage V_Q < V_RT, a reset signal is generated. The wiring of the
reset switching threshold input enables the value of V_RT to be reduced. The reset delay
time can be adjusted using an external capacitor. The integrated watchdog monitors the
connected active controller. If there is no rising edge at the watchdog input, the reset
Type
TLE 4268 GS
TLE 4268 G
Package
PG-DSO-8-16
PG-DSO-20-35
Data Sheet
1
Rev. 1.5, 2007-03-20