7915CV datasheet(6/13 Pages) STMICROELECTRONICS

6 / 13 page

* Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account

separately. Pulce testing with low duty cycle is used.

ELECTRICAL CHARACTERISTICS FOR L7918C (refer to the test circuits, Tj = 0 to 150

oC,

Vi = -27V, Io = 500 mA, Ci = 2.2

µF, Co =1 µF unless otherwise specified)

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Output Voltage

Tj =25

-17.3

-18

-18.7

Output Voltage

Io = -5mA to -1A

≤ 15 W

Vi = -22 to -33 V

-17.1

-18

-18.9

∆Vo*

Line Regulation

Vi = -21 to -33 V

Tj =25

Vi = -24 to -30 V

Tj =25

360

180

∆Vo*

Load Regulation

Io = 5 to 1500 mA

Tj =25

Io = 250 to 750 mA

Tj =25

360

180

Quiescent Current

Tj =25

oC3

∆Id

Quiescent Current Change

Io = 5 to 1000 mA

0.5

∆Id

Quiescent Current Change

Vi = -22 to -33 V

∆Vo

∆T

Output Voltage Drift

Io = 5 mA

-1

mV/

Output Noise Voltage

B = 10Hz to 100KHz Tj =25

oC300

µV

SVR

Supply Voltage Rejection

∆Vi = 10 V

f = 120 Hz

Dropout Voltage

Io =1 A

Tj =25

∆VO =100 mV

1.1

Isc

Short Circuit Current

1.1

Iscp

Short Circuit Peak Current

Tj =25

oC2.2

ELECTRICAL CHARACTERISTICS FOR L7920C (refer to the test circuits, Tj = 0 to 150

oC,

Vi = -29V, Io = 500 mA, Ci = 2.2

µF, Co =1 µF unless otherwise specified)

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Output Voltage

Tj =25

-19.2

-20

-20.8

Output Voltage

Io = -5mA to -1A

≤ 15 W

Vi = -24 to -35 V

-19

-20

-21

∆Vo*

Line Regulation

Vi = -23 to -35 V

Tj =25

Vi = -26 to -32 V

Tj =25

400

200

∆Vo*

Load Regulation

Io = 5 to 1500 mA

Tj =25

Io = 250 to 750 mA

Tj =25

400

200

Quiescent Current

Tj =25

oC3

∆Id

Quiescent Current Change

Io = 5 to 1000 mA

0.5

∆Id

Quiescent Current Change

Vi = -24 to -35 V

∆Vo

∆T

Output Voltage Drift

Io = 5 mA

-1. 1

mV/

Output Noise Voltage

B = 10Hz to 100KHz Tj =25

oC350

µV

SVR

Supply Voltage Rejection

∆Vi = 10 V

f = 120 Hz

Dropout Voltage

Io =1 A

Tj =25

∆VO =100 mV

1.1

Isc

Short Circuit Current

0.9

Iscp

Short Circuit Peak Current

Tj =25

oC2.5

L7900

6/13

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