TLE7469_08 Datasheet, PDF (2/21 Pages) Infineon Technologies AG – Dual Low Drop Voltage Regulator Ultra low quiescent current consumption < 55 μA

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_Q1 - V_Q2) < 3.0 V even during power-on and power-down time enabling
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.
Data Sheet
2
Rev. 1.6, 2008-01-22