l4925l STMicroelectronics, l4925l Datasheet - Page 10

• Manufacturer Part Number: l4925l
• Description: Very Low Drop Voltage Regulator
• Manufacturer: STMicroelectronics

4 Application information
4
4.1
4.2
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Application information
Supply voltage transients
High supply voltage transients can cause a reset output signal disturbance.
For supply voltage greater than 8V the circuit shows a high immunity of the reset output against
supply transients of more than 100V/ms. For supply voltage lower than 8V, supply transients of
more than 0.4V/ms. can cause a reset signal disturbance.
Application circuit
Figure 9.
For stability: C
Recommended for application: C
VBAT
C
Application circuit diagram
S
GND
S
V
≥ 1µF; C
S
PREREGULATOR
REG
O
≥ 10µF;ESR ≤ 2.5Ω at 10 KHz
5V
+
-
S
= C
Vz
O
= 10µF to 100µF
VREF
1.23V
RESET
Vz
2µ
=
2V
L4925
D95AT153
Vo
CT
RES
Co
L4925
Vout
RES