TLE4291E Datasheet, PDF (16/28 Pages) Infineon Technologies AG – Low Drop Out Linear Voltage Regulator

TLE4291
Enable Function
7
Enable Function
7.1
Description Enable Function
The TLE4291 can be turned on or turned off via the EN Input. With voltage levels higher than V_EN,high applied to
the EN Input the device will be completely turned on. A voltage level lower than V_EN,low sets the device to low
quiescent current mode. In this condition the device is turned off and is not functional. The Enable Input has an
build in hysteresis to avoid toggling between ON/OFF state, if signals with slow slope are applied to the input.
7.2
Electrical Characteristics Enable Function
Electrical Characteristics: Enable Function
V_I = 13.5V, T_j = -40 °C to +150 °C, all voltages with respect to ground, direction of currents as shown in (unless
otherwise specified)
Pos. Parameter
Symbol
Limit Values
Unit Conditions
Min. Typ. Max.
7.2.1 Enable
Low Signal Valid
V_EN,low
–
–
0.8
V
–
7.2.2 Enable
High Signal Valid
V_EN,high 2
–
–
V
V_Q settled
7.2.3 Enable
Threshold Hysteresis
V_EN,hyst 30
–
–
mV –
7.2.4 Enable
Input current
I_EN
–
–
2
µA
V_EN = 5 V
7.2.5 Enable
R_EN
3
internal pull-down resistor
4.5
6
MΩ –
Data Sheet
16
Rev. 1.1, 2012-12-03