L4987CPT50 datasheet(4/11 Pages) STMICROELECTRONICS

Part #	L4987CPT50

Description	VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT AND DROPOUT CONTROL FLAG

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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ELECTRICAL CHARACTERISTICS FOR L4987CPT50 (refer to the test circuits, VI =8 V,

IOUT = 5mA, Tj =25

oC, Ci = 0.1

µF, Co = 2.2 µF unless otherwise specified)

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Vo

Output Voltage

Io = 200 mA, Vi =8 V

Io = 200 mA, Vi = 8 V -40<TJ<125

oC

4.9

4.8

55.1

5.2

V

Vi

Operating Input Voltage

Io = 200 mA

5.7

18

V

Iout

Output Current Limit

250

A

∆Vo

Line Regulation

Vi = 6.3 to 18 V, Io = 0.5 mA

3

20

mV

∆Vo

Load Regulation

Vi = 3.6 V

Io = 0.5 to 200 mA

3

20

mV

Id

Quiescent Current

ON MODE

Vi = 6.3 to 18 V Io =0 mA

Vi = 6.3 to 18 V Io = 200 mA

0.7

1.5

1

6

mA

OFF MODE Vi =12 V

90

180

µA

SVR

Supply Voltage Rejection

Io = 5 mA Vi = 7.3 V

± 1V

f = 120 Hz

f= 1 KHz

f = 10 KHz

76

71

58

dB

Vd

Dropout Voltage

Io = 200 mA

-40 < TJ < 125

oC

0.3

0.5

0.7

V

Vil

Control Input Logic Low

-40 < TJ < 125

oC0.8

V

Vih

Control Input Logic High

-40 < TJ < 125

oC2

V

Ii

Control Input Current

10

µA

CO

Output Bypass Capacitance

ESR = 0.5 to 10

Ω Io = 0 to 200 mA

-40 < TJ < 125

oC

210

µF

Vfl

Control Flag Output Low

Vi -Vo <Vcesat power,

Ifl =6 mA

Io = 200 mA

0.5

V

Ifh

Control Flag Output High

Leakage Current

Vi > 5.85 V

Voh =15 V

10

µA

L4987 SERIES

4/11

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