Datasheet

Data Sheet 12 Rev. 2.7, 2007-06-25
TLE 4271-2
The reset reaction time t
rr
is the time it takes the voltage regulator to set the reset out
LOW after the output voltage has dropped below the reset threshold. It is typically 1 µs
for delay capacitor of 47 nF. For other values for
C
d
the reaction time can be estimated
using the following equation:
t
RR
≈ 20 s/F × C
d
(2)
Figure 5 Time Response
AET01985
t
D
t
RR
RR
t<
Power
Reset Shutdown
Thermal Voltage Drop
at Input
Undervoltage
at Output
Secondary
Spike Bounce
Load Shutdownon
V
RO, SAT
LD
V
UD
V
V
D, SAT
RT
V
L, INH
V
V
U, INH
INH
V
RO
V
V
D
Q
V
Ι
V
t
t
t
t
t
=
dt
Vd
D
D
C
Ι