Final Data Sheet

2

Rev. 1.3, 2004-10-28

TLE 7469

The voltage regulator features an integrated reset circuitry which monitors the 2.6 V/

3.3 V supply voltage. At power on the reset checks both supply voltages and performs

the power-on reset with an adjustable delay time. The voltage difference is kept in the

range -0.5 V < (

V

save

µC operation without external clamping. Using the integrated early warning

comparator an external voltage can be supervised. An integrated output sink current

circuitry keeps the voltage at the Q1 pin below 5.5 V even when reverse currents are

applied. Thus connected devices are protected from overvoltage damage. The regulator

can be shut down via the Inhibit input causing the current consumption to drop below

9

µA.

The TLE 7469 is designed for use under the severe conditions of automotive

applications, and is therefore equipped with protection functions against overload, short

circuit and overtemperature. It operates in the wide junction temperature range from

-40

°C to 150 °C and offers the low quiescent current consumption required for body

applications.

For applications requiring extremely low noise levels the Infineon voltage regulator family

TLE 42XY and TLE 44XY is more suited than the TLE 7469. A mV-range output noise

on the TLE 7469 caused by the charge pump operation is unavoidable due to the ultra

low quiescent current concept.