L4925(2000) Ver la hoja de datos (PDF) - STMicroelectronics
Número de pieza
componentes Descripción
Lista de partido
L4925 Datasheet PDF : 8 Pages
| |||
L4925
ELECTRICAL CHARACTERISTICS (VS =14V Tj =–40 to 125°C unless otherwise specified;
Symbol
VO
VO
VDP
VIO
VOL
VOLO
ILIM
IQSE
IQ
RESET
Parameter
Output Voltage
Output Voltage
Dropout Voltage
Input to Output Voltage
Difference in Undervoltage
Condition
Line Regulation
Load Regulation
Current Limit
Quiescent Current
Quiescent Current
Test Condition
Min. Typ. Max. Unit
VI = 6 to 28V; IO = 1 to 500mA 4.90
5
5.10
V
VI = 35V; T <1s;
IO = 1 to 500mA
5.50
V
IO = 100mA
IO = 500mA
0.2
0.3
V
0.3
0.6
V
VI = 4V; IO = 100mA
0.5
V
VI = 6 to 28V; IO = 1 to 1mA
10
mV
IO = 1 to 500mA
50
mV
VO = 4.5V;
550 1000 1500 mA
VO = 0; Foldback characteristic
250
mA
IO = 0.3mA
190 360
µA
IO = 500mA
20
mA
Symbol
VRT
VRTH
tRD
tRR
VRL
IRH
VCTth
VCTth hy
Parameter
Reset Threshold Voltage
Reset Threshold
Reset Pulse Delay
Reset Reaction Time
Reset Output LOW Voltage
Reset Output HIGH Leakage
Current
Delay Comparator Threshold
Delay Comparator Threshold
Hysteresis
Test Condition
CT = 100nF; tR > 100µs
CT = 100nF;
RRES = 10KΩ to VO; VS => 3V
VRES = 5V
Min. Typ. Max. Unit
4.5
5.2
V
50
100 200 mV
60
100 140
ms
5
30
µs
0.4
V
1
µA
2
V
200
mV
APPLICATION CIRCUIT DIAGRAM
VBAT
VS
CS
Vz
PREREGULATOR
5V
+
-
GND
REG
VREF
1.23V
Vz
2µ
RESET
L4925N
= 2V
Vo
Co
CT
RES
Vout
RES
D95AT153
For stability: CS > 1µF; CO > 10µF;ESR < 2.5Ω at 10 KHz
Recommended for application: CS =CO = 10µF to 100µF
3/8
Share Link: 