TLE4267 Datasheet, PDF (3/22 Pages) Siemens Semiconductor Group – 5-V Low-Drop Voltage Regulator

TLE 4267
Table 1
Truth Table for Turn-ON/Turn-OFF Logic
E2,
E6, V_Q Remarks
Inhibit Hold
L
X
OFF Initial state, Inhibit internally pulled-up
H
X
ON Regulator switched on via Inhibit, by ignition for example
H
L
ON Hold clamped active to ground by controller while Inhibit is still
high
X
L
ON Previous state remains, even ignition is shut off: self-holding
state
L
L
ON Ignition shut off while regulator is in self-holding state
L
H
OFF Regulator shut down by releasing of Hold while Inhibit remains
Low, final state. No active clamping required by external self-
holding circuit (µC) to keep regulator in off-state.
Inhibit: E2 Enable function, active High
Hold: E6 Hold and release function, active Low
Data Sheet
3
Rev. 2.5, 2007-03-20