L4937 Просмотр технического описания (PDF) - STMicroelectronics
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L4937 Datasheet PDF : 9 Pages
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L4937N
ELECTRICAL CHARACTERISTICS (VS = 14V; –40°C ≤ Tj ≤ 125°C unless otherwise specified)
Symbol
VS
VO1
Parameter
Operating Supply Voltage
Standby Output Voltage
VO2 - VO1 Output Voltage 2 Tracking Error
(note 1)
VDP1 Dropout Voltage 1
VIO1
VDP2
Input to Output Voltage
Difference in Undervoltage
Condition
Dropout Voltage 2
VIO2
VOL 1.2
Input to Output Voltage
Difference in Undervoltage
Condition
Line Regulation
VOLO1
VOLO2
ILIM1
Load Regulation 1
Load Regulation 2
Current Limit 1
ILIM2 Current Limit 2
IQSB Quiescent Current Standby
Mode (output 2 disabled)
IQ
Quiescent Current
Test Conditions
6V ≤ VS ≤ 25V
1mA ≤ IO1 ≤ 50mA
6V ≤ VS ≤ 25V
5mA ≤ IO2 ≤ 500mA
Enable = LOW
IO1 = 10mA
IO1 = 50mA
VS = 4V, IO1 = 35mA
IO2 = 100mA
IO2 = 500mA
VS = 4.6V, IO2 = 350mA
6V ≤ VS ≤ 25V
IO1 = 1mA; IO2 = 5mA
1mA ≤ IO1 ≤ 50mA
5mA ≤ IO2 ≤ 500mA
VO1 = 4.5V
VO1 = 0V (note 2)
VO2 = 0V
IO1 = 0.3mA; TJ < 100°C
VEN ≥ 2.4V
VS = 14V
VS = 3.5V
IO1 = 50mA
IO1 = 500mA
ENABLE
Min. Typ. Max. Unit
25
V
4.90 5.00 5.10
V
–25
+25 mV
0.1 0.25
V
0.2
0.4
V
0.4
V
0.2
0.3
V
0.3
0.6
V
0.6
V
20
mV
25
mV
50
mV
55
100 200
mA
25
50
100
mA
550 1000 1700 mA
210 290
µA
340 850
µA
30
mA
VENL
VENH
VENhyst
IEN
Enable Input LOW Voltage
(output 2 active)
Enable Input HIGH Voltage
Enable Hysteresis
Enable Input Current
0V < VEN < 1.2V
2.5V < VEN < 7V
–0.3
1.5
V
2.4
7
V
30
75
200
mV
–10 –1.5 –0.5
µA
–1
0
+1
µA
4/9
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