L7805CT datasheet(13/34 Pages) STMICROELECTRONICS

13 / 34 page

L7800 SERIES

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Table 19: Electrical Characteristics Of L7812C (refer to the test circuits, TJ = 0 to 125°C, VI = 19V,

IO = 500 mA, CI = 0.33 µF, CO = 0.1 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.

Table 20: Electrical Characteristics Of L7815C (refer to the test circuits, TJ = 0 to 125°C, VI = 23V,

IO = 500 mA, CI = 0.33 µF, CO = 0.1 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

11.5

12.5

Output Voltage

IO = 5 mA to 1 A

PO ≤ 15W

VI = 14.5 to 27 V

11.4

12.6

∆V

O(*)

Line Regulation

VI = 14.5 to 30 V

TJ = 25°C

240

VI = 16 to 22 V

TJ = 25°C

120

∆V

O(*)

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

∆I

Quiescent Current Change

IO = 5 mA to 1 A

0.5

VI = 14.5 to 30 V

∆V

O/∆T

Output Voltage Drift

IO = 5 mA

-1

mV/°C

Output Noise Voltage

B =10Hz to 100KHz

TJ = 25°C

µV/V

SVR

Supply Voltage Rejection

VI = 15 to 25 V

f = 120Hz

Dropout Voltage

IO = 1 A

TJ = 25°C

Output Resistance

f = 1 KHz

Ω

Isc

Short Circuit Current

VI = 35 V

TJ = 25°C

0.35

Iscp

Short Circuit Peak Current

TJ = 25°C

2.2

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Output Voltage

TJ = 25°C

14.5

15.6

Output Voltage

IO = 5 mA to 1 A

PO ≤ 15W

VI = 17.5 to 30 V

14.25

15.75

∆V

O(*)

Line Regulation

VI = 17.5 to 30 V

TJ = 25°C

300

VI = 20 to 26 V

TJ = 25°C

150

∆V

O(*)

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

∆I

Quiescent Current Change

IO = 5 mA to 1 A

0.5

VI = 17.5 to 30 V

∆V

O/∆T

Output Voltage Drift

IO = 5 mA

-1

mV/°C

Output Noise Voltage

B =10Hz to 100KHz

TJ = 25°C

µV/V

SVR

Supply Voltage Rejection

VI = 18.5 to 28.5 V

f = 120Hz

Dropout Voltage

IO = 1 A

TJ = 25°C

Output Resistance

f = 1 KHz

Ω

Isc

Short Circuit Current

VI = 35 V

TJ = 25°C

0.23

Iscp

Short Circuit Peak Current

TJ = 25°C

2.2

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