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L4937NPD

DUAL 5V MULTIFUNCTION VOLTAGE REGULATOR

STMicroelectronics 

L4937NPD

ELECTRICAL CHARACTERISTICS (VS = 14V; –40°C ≤ TJ ≤ 125°C unless otherwise specified)

Symbol

VS

VO1

VO2 - VO1

VDP1

VIO1

VDP2

VIO2

VOL 1.2

VOLO1

VOLO2

ILIM1

ILIM2

IQSB

IQ

Parameter

Operating Supply Voltage

Standby Output Voltage

Output Voltage 2 Tracking Error

Dropout Voltage 1

Input to Output Voltage

Difference in Undervoltage

Condition

Dropout Voltage 2

Input to Output Voltage

Difference in Undervoltage

Condition

Line Regulation

Load Regulation 1

Load Regulation 2

Current Limit 1

Current Limit 2

Quiescent Current Standby Mode

(output 2 disabled)

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

IO1 = 100mA

IO1 = 500mA

Vs = 4.6V, IO1 = 350mA

6V ≤ VS ≤ 25V

IO1 = 1mA; IO2 = 5mA

1mA ≤ IO1 ≤ 50mA

5mA ≤ IO2 ≤ 500mA

VO1 = 4.5V

VO1 = 0V (note 1)

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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