TLE 4268G Infineon Technologies, TLE 4268G Datasheet - Page 10

• Manufacturer Part Number: TLE 4268G
• Manufacturer: Infineon Technologies

Specifications of TLE 4268G

• Packages: PG-DSO-20
• Regulator Type: single output
• Output Voltage: 5V
• Accuracy: 2.0 %
• Max. Output Current: 150mA
• Dropout Voltage: 250mV

Reset Timing
The power-on reset delay time is defined by the charging time of an external capacitor
C
C
Definitions:
•
•
•
•
•
The reset reaction time
LOW after the output voltage has dropped below the reset threshold. It is typically 1 s
for delay capacitor of 47 nF. For other values for
using the following equation:
t
Figure 5
Data Sheet
rr
D
D
which can be calculated as follows:
= (
C
I
V
V
V
V
V
D,c
20 s/F
Power-on-Reset
Q
t
V
D
RO
DU
D
rd
= delay capacitor
=
= charge current, typical 12 A
t
= delay time
= upper delay switching threshold at
rd
V
t
DU
rd
I
, typical 1.8 V
D,c
C
Timing (Watchdog disabled)
D
)/
V
Thermal
Shutdown
t
rr
t
rr
is the time it takes the voltage regulator to set the reset out
Voltage Dip
at Input
10
C
Undervoltage
D
for reset delay time
C
D
the reaction time can be estimated
Secondary
Spike
<
t
rr
at Output
Overload
Rev. 1.5, 2007-03-20
V d
dt
=
C
D,c
D
TLE 4268
AED03010
V
V
V
Q, rt
DU
DRL
t
t
t
t
(1)
(2)