L7900AC datasheet(3/13 Pages) STMICROELECTRONICS

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L7900AC SERIES

3/13

Figure 2: Application Circuits

Table 4: Electrical Characteristics Of L7905A (refer to the test circuits, TJ = 0 to 125°C, VI = -10V,

IO = 500 mA, CI = 2.2 µF, CO = 1 µF unless otherwise specified).

(*) 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.

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Output Voltage

TJ = 25°C

-4.9

-5

-5.1

Output Voltage

IO = -5 mA to -1 A

PO ≤ 15W

VI = 8 to 20 V

-4.8

-5

-5.2

∆V

O(*)

Line Regulation

VI = -7 to -25 V

TJ = 25°C

100

VI = -8 to -12 V

TJ = 25°C

∆V

O(*)

Load Regulation

IO = 5 mA to 1.5 A

TJ = 25°C

100

IO = 250 to 750 mA

TJ = 25°C

Quiescent Current

TJ = 25°C

∆I

Quiescent Current Change

IO = 5 mA to 1 A

0.5

VI = -8 to -25 V

1.3

∆V

O/∆T

Output Voltage Drift

IO = 5 mA

-0.4

mV/°C

Output Noise Voltage

B = 10Hz to 100KHz

TJ = 25°C

100

µV

SVR

Supply Voltage Rejection

∆V

I = 10 V f = 120Hz

Dropout Voltage

IO = 1 A

TJ = 25°C

∆V

O = 100

1.4

Isc

Short Circuit Current

2.1

Iscp

Short Circuit Peak Current

TJ = 25°C

2.5

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