L7912CV datasheet(9/24 Pages) STMICROELECTRONICS

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L79xxC

Electrical characteristics

9/24

Table 7.

Electrical characteristics of L7912C (refer to the test circuits, TJ = 0 to 125 °C, VI = -19 V,

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°C

-11.5

-12

-12.5

Output voltage

IO = -5 mA to -1 A, PO ≤15 W

VI = -15.5 to -27 V

-11.4

-12

-12.6

ΔVO(1)

Line regulation

VI = -14.5 to -30 V, TJ = 25°C

240

VI = -16 to -22 V, TJ = 25°C

120

ΔVO(1)

Load regulation

IO = 5 mA to 1.5 A, TJ = 25°C

240

IO = 250 to 750 mA, TJ = 25°C

120

Quiescent current

TJ = 25°C

ΔId

Quiescent current change

IO = 5 mA to 1 A

0.5

VI = -15 to -30 V

ΔVO/ΔT Output voltage drift

IO = 5 mA

-0.8

mV/°C

Output noise voltage

B = 10Hz to 100kHz, TJ = 25°C

200

µV

SVR

Supply voltage rejection

ΔVI = 10 V, f = 120Hz

Dropout voltage

IO = 1 A, TJ = 25°C, ΔVO = 100 mV

1.1

Isc

Short circuit current

1.5

Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be

taken into account separately. Pulse testing with low duty cycle is used.

Table 8.

Electrical characteristics of L7915C (refer to the test circuits, TJ = 0 to 125 °C, VI = -23 V,

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°C

-14.4

-15

-15.6

Output voltage

IO = -5 mA to -1 A, PO ≤15 W

VI = -18.5 to -30 V

-14.3

-15

-15.7

ΔVO(1)

Line regulation

VI = -17.5 to -30 V, TJ = 25°C

300

VI = -20 to -26 V, TJ = 25°C

150

ΔVO(1)

Load regulation

IO = 5 mA to 1.5 A, TJ = 25°C

300

IO = 250 to 750 mA, TJ = 25°C

150

Quiescent current

TJ = 25°C

ΔId

Quiescent current change

IO = 5 mA to 1 A

0.5

VI = -18.5 to -30 V

ΔVO/ΔT Output voltage drift

IO = 5 mA

-0.9

mV/°C

Output noise voltage

B = 10Hz to 100kHz, TJ = 25°C

250

µV

SVR

Supply voltage rejection

ΔVI = 10 V, f = 120Hz

Dropout voltage

IO = 1 A, TJ = 25°C, ΔVO = 100 mV

1.1

Isc

Short circuit current

1.3

Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be

taken into account separately. Pulse testing with low duty cycle is used.

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