L7815CV datasheet(15/34 Pages) STMICROELECTRONICS

15 / 34 page

L7800 SERIES

15/34

Table 23: Electrical Characteristics Of L7824C (refer to the test circuits, TJ = 0 to 125°C, VI = 33V,

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.

Figure 8: Dropout Voltage vs Junction

Temperature

Figure 9: Peak Output Current vs Input/output

Differential Voltage

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Output Voltage

TJ = 25°C

232425

Output Voltage

IO = 5 mA to 1 A

PO ≤ 15W

VI = 27 to 38 V

22.8

25.2

∆V

O(*)

Line Regulation

VI = 27 to 38 V

TJ = 25°C

480

VI = 30 to 36 V

TJ = 25°C

240

∆V

O(*)

Load Regulation

IO = 5 mA to 1.5 A

TJ = 25°C

480

IO = 250 to 750 mA

TJ = 25°C

240

Quiescent Current

TJ = 25°C

∆I

Quiescent Current Change

IO = 5 mA to 1 A

0.5

VI = 27 to 38 V

∆V

O/∆T

Output Voltage Drift

IO = 5 mA

-1.5

mV/°C

Output Noise Voltage

B =10Hz to 100KHz

TJ = 25°C

170

µV/V

SVR

Supply Voltage Rejection

VI = 28 to 38 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

0.15

Iscp

Short Circuit Peak Current

TJ = 25°C

2.1

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