MC7818CT 查看數據表（PDF） - Vishay Siliconix

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MC7818CT

3-Terminal Fixed Positive Voltage Regulators

Vishay Siliconix 

MC78xxCT Series

Vishay Semiconductor

Electrical Characteristics – MC7818

Vin = 27V, Iout = 500mA, 0°C ≤ TJ ≤ 125°C, Cin = 0.33µF, Cout = 0.1µF; unless otherwise noted.

Parameter

Symbol

Conditions

Min. Typ. Max. Unit

Output Voltage

TJ = 25°C

17.64 18.0 18.36

Vout

21V ≤ Vin ≤ 33V,

5mA ≤ Iout ≤ 1.0A, PD ≤ 15W

17.44

—

18.56

V

Line Regulation

(TJ = 25°C)

∆REGline

21V ≤ Vin < 33V

22V ≤ Vin < 26V

–

15

360

mV

–

5

180

Load Regulation

(TJ = 25°C)

10mA ≤ Iout < 1.5A

–

∆REGload

250mA ≤ Iout < 750mA

–

12

360

mV

4

180

Quiescent Current

Iq

Iout = 0, TJ = 25°C

—

4.5

8

mA

Quiescent Current Change

21V ≤ Vin ≤ 33V

—

—

1

∆Iq

mA

5mA ≤ Iout ≤ 1.0A

—

—

0.5

Output Noise Voltage

Vn

10Hz ≤ f ≤ 100KHz,TJ= 25°C —

110

—

mV

Ripple Rejection Ratio

RR

f = 120Hz,21V ≤ Vin ≤ 31V 53

69

—

dB

Dropout Voltage

Vdrop

Iout = 1.0A, TJ = 25°C

—

2

—

V

Output Resistance

Rout

f = 1KHz

—

22

—

mΩ

Output Short Circuit Current

Ios

TJ = 25°C

—

200

—

mA

Peak Output Current

Io peak

TJ = 25°C

—

1.5

—

A

Temperature Coefficient of Output Voltage

∆Vout/∆TJ Iout = 5mA,0°C ≤TJ ≤ 125°C —

–1

— mV/°C

Electrical Characteristics – MC7824

Vin = 33V, Iout = 500mA, 0°C ≤ TJ ≤ 125°C, Cin = 0.33µF, Cout = 0.1µF; unless otherwise noted.

Parameter

Symbol

Conditions

Min.

Output Voltage

TJ = 25°C

23.52

Vout

26V ≤ Vin ≤ 38V,

5mA ≤ Iout ≤ 1.0A, PD ≤ 15W

23.32

Line Regulation

(TJ = 25°C)

26V ≤ Vin < 38V

–

∆REGline

27V ≤ Vin < 32V

–

Load Regulation

(TJ = 25°C)

10mA ≤ Iout < 1.5A

–

∆REGload

250mA ≤ Iout < 750mA

–

Quiescent Current

Iq

Iout = 0, TJ = 25°C

—

Quiescent Current Change

26V ≤ Vin ≤ 38V

—

∆Iq

5mA ≤ Iout ≤ 1.0A

—

Output Noise Voltage

Vn

10Hz ≤ f ≤ 100KHz,TJ= 25°C —

Ripple Rejection Ratio

Rrej

f = 120Hz, 26V ≤ Vin ≤ 36V 50

Dropout Voltage

Vdrop

Iout = 1.0A, TJ = 25°C

—

Output Resistance

Rout

f = 1KHz

—

Output Short Circuit Current

Ios

TJ = 25°C

—

Peak Output Current

Io peak

TJ = 25°C

—

Temperature Coefficient of Output Voltage

∆Vout/∆TJ Iout = 5mA,0°C ≤TJ ≤ 125°C —

Typ.

24.0

—

18

6

12

4

4.6

—

—

170

66

2

28

150

1.5

–1.5

Max. Unit

24.48

V

24.68

480

mV

240

480

mV

240

8

mA

1

mA

0.5

—

µV

—

dB

—

V

—

mΩ

—

mA

—

A

— mV/°C

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6

Document Number 74813

29-Nov-01

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