L4931 datasheet(9/29 Pages) STMICROELECTRONICS

Part #	L4931

Description	VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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L4931 SERIES

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ELECTRICAL CHARACTERISTICS OF L4931Cxx30 (refer to the test circuits, TJ = 25°C,

CI =0.1 µF, CO = 2.2 µF unless otherwise specified).

(*) For SO-8 package the maximum limit of load regulation and dropout is increased by 20 mV.

ELECTRICAL CHARACTERISTICS OF L4931ABxx33 (refer to the test circuits, TJ = 25°C,

CI =0.1 µF, CO = 2.2 µF unless otherwise specified).

(*) For SO-8 package the maximum limit of load regulation and dropout is increased by 20 mV.

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VO

Output Voltage

IO =5mA

VI =5V

2.94

3

3.06

V

IO =5mA

VI =5V

TA=-25 to 85°C

2.88

3.12

VI

Operating Input Voltage

IO = 250 mA

20

V

Iout

Output Current Limit

300

mA

∆V

O

Line Regulation

VI = 3.8 to 20 V

IO =0.5 mA

3

18

mV

∆V

O(*)

Load Regulation

VI =4 V

IO = 0.5 to 250 mA

3

18

mV

Id

Quiescent Current

ON MODE

VI =4 to 20 V

IO = 0 mA

0.61mA

VI =4 to 20 V

IO = 250 mA

4

6

OFF MODE

VI =6 V

50

100

µA

SVR

Supply Voltage Rejection

IO =5mA

VI =5 ± 1 V

f = 120 Hz

74

dB

f= 1KHz

71

f= 10 KHz

55

eN

Output Noise Voltage

B =10 Hz to 100 KHz

50

µV

Vd(*)

Dropout Voltage

IO = 250 mA

0.4

0.6

V

IO = 250 mA

TJ= -40 to 125°C

0.8

VIL

Control Input Logic Low

TA= -40 to 125°C

0.8

V

VIH

Control Input Logic High

TA= -40 to 125°C

2

V

II

Control Input Current

VI =6 V,

VC =6V

10

µA

CO

Output Bypass Capacitance ESR = 0.1 to 10

Ω

IO = 0 to 250 mA

2

10

µF

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VO

Output Voltage

IO =5mA

VI = 5.3 V

3.267

3.3

3.333

V

IO =5mA

VI =5.3 V

TA=-25 to 85°C 3.234

3.366

VI

Operating Input Voltage

IO = 250 mA

20

V

Iout

Output Current Limit

300

mA

∆V

O

Line Regulation

VI =4 to 20 V

IO =0.5 mA

3

15

mV

∆V

O(*)

Load Regulation

VI =4.2 V

IO = 0.5 to 250 mA

3

15

mV

Id

Quiescent Current

ON MODE

VI = 4.2 to 20 V

IO = 0 mA

0.61mA

VI = 4.2 to 20 V

IO = 250 mA

4

6

OFF MODE

VI =6 V

50

100

µA

SVR

Supply Voltage Rejection

IO =5mA

VI =5.2 ± 1 V

f = 120 Hz

73

dB

f= 1KHz

70

f= 10 KHz

55

eN

Output Noise Voltage

B =10 Hz to 100 KHz

50

µV

Vd(*)

Dropout Voltage

IO = 250 mA

0.4

0.6

V

IO = 250 mA

TJ= -40 to 125°C

0.8

VIL

Control Input Logic Low

TA= -40 to 125°C

0.8

V

VIH

Control Input Logic High

TA= -40 to 125°C

2

V

II

Control Input Current

VI =6 V,

VC =6V

10

µA

CO

Output Bypass Capacitance ESR = 0.1 to 10

Ω

IO = 0 to 250 mA

2

10

µF

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