MC7824CT-E3_技术文档

MC78xxCT Series

3-Terminal Fixed

Positive Voltage Regulators

MC78xxCT

TO-220AB

Pin Definition

1. Input

2. Ground

3. Output

(Heatsink/tab

connected to pin 2)

3

2

1

Standard Application

Description

These voltage regulators are monolithic integrated

circuits designed as fixed-voltage regulators for a

wide variety of applications including local, on-card

regulation. These regulators employ internal current

limiting, thermal shutdown, and safe-area compen-

sation. With adequate heatsinking the MC78xxCT

can deliver output currents in excess of 1.5 ampere.

Input

Output

MC78xx

Cin

0.33µF

Co

0.1µF

Although designed primarily as a fixed voltage

regulator, these devices can be used with external

components to obtain adjustable voltages with

currents.

Notes:

A common ground is required between the input and the output voltages.

The input voltage must remain typically 2.0V above the output voltage

even during the low point on the input ripple voltage.

xx = these two digits of the part number indicate output voltage.

Cin is required if regulator is located an appreciable distance from power

supply filter.

Features

Co is not needed for stability, however, it does improve transient response.

• Output current in excess of 1.0 ampere

• No external components required

• Internal thermal overload protection

• Internal short-circuit current limiting

• Output transistor safe-area compensation

• Output voltage offered in 2% tolerance

Internal Block Diagram

Input

1

Output

3

Series

Pass

Element

Mechanical Data

Case: TO-220 Package

Current

Generator

SOA

Protection

Starting

Circuit

Reference

Voltage

Error

Amplifier

Case outline is on the back page.

Thermal

Protection

GND

2

10/10/01

1 of 9

MC78xxCT Series

3-Terminal Fixed

Positive Voltage Regulators

Maximum Ratings Ratings at 25°C ambient temperature unless otherwise specified.

Parameter

Symbol

Value

Unit

V

Input Voltage⁽¹⁾

V_in

30

Input Voltage⁽²⁾

V_in

40

V

Thermal Resistance⁽³⁾

Operating Junction Temperature Range

Storage Junction Temperature Range

R_θJC

T_J

5

°C/W

°C

–20 to +150

–65 to +150

T_stg

°C

Notes: (1) MC7805 to MC7818

(2) MC7824

(3) Follow the derating curve (fig. 1)

Electrical Characteristics – MC7805

Vin = 10V, I = 500mA, 0°C ≤ T ≤ 125°C, Cin = 0.33µF, C = 0.1µF; unless otherwise noted.

out

J

out

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

T_J= 25°C

4.90

5

5.10

5.15

Output Voltage

V_out

V

7V ≤ Vin ≤ 20V,

5mA ≤ I_out≤ 1.0A, P_D≤ 15W

4.85

—

7V ≤ Vin < 25V

8V ≤ Vin < 13V

–

3

1

100

50

100

50

8

Line Regulation

(T_J= 25°C)

∆REG_line

mV

10mA ≤ I_out< 1.5A

250mA ≤ I_out< 750mA

I_out= 0, T_J= 25°C

7V ≤ Vin ≤ 25V

–

15

5

Load Regulation

(T_J= 25°C)

∆REG_load

mV

mA

–

Quiescent Current

I_q

—

62

—

4.2

—

1.3

0.5

—

Quiescent Current Change

∆I_q

5mA ≤ I_out≤ 1.0A

—

Output Noise Voltage

Ripple Rejection Ratio

Dropout Voltage

Vn

RR

10Hz≤f≤100KHz,T =25°C

40

78

2

µV

dB

J

f = 120Hz

I_out= 1.0A, T_J= 25°C

f = 1KHz

—

V_drop

R_out

I_os

—

V

Output Resistance

17

750

1.5

–1.1

—

mΩ

mA

Output Short Circuit Current

Peak Output Current

T_J= 25°C

—

I_{o peak}

T_J= 25°C

—

A

Temperature Coefficient of Output Voltage

∆V_out/∆T_JI_out=5mA,0°C≤T_J≤ 125°C

—

mV/°C

2 of 9

MC78xxCT Series

3-Terminal Fixed

Positive Voltage Regulators

Electrical Characteristics – MC7806

Vin = 11V, I = 500mA, 0°C ≤ T ≤ 125°C, Cin = 0.33µF, C = 0.1µF; unless otherwise noted.

out

J

out

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

T_J= 25°C

5.88

6.0

6.12

Output Voltage

V_out

V

8V ≤ Vin ≤ 21V,

5mA ≤ I_out≤ 1.0A, P_D≤ 15W

5.83

—

6.17

8V ≤ Vin < 25V

9V ≤ Vin < 13V

–

5

1.5

14

4

120

60

120

60

8.0

1.3

0.5

—

Line Regulation

(T_J= 25°C)

∆REG_line

mV

10mA ≤ I_out< 1.5A

250mA ≤ I_out< 750mA

I_out= 0, T_J= 25°C

8V ≤ Vin ≤ 25V

–

Load Regulation

(T_J= 25°C)

∆REG_load

mV

mA

–

Quiescent Current

I_q

—

59

—

4.3

—

Quiescent Current Change

∆I_q

5mA ≤ I_out≤ 1.0A

—

Output Noise Voltage

Ripple Rejection Ratio

Dropout Voltage

Vn

RR

10Hz≤f≤100KHz,T =25°C

45

75

2

µV

dB

A

f = 120Hz, 9V ≤ Vin ≤ 19V

I_out= 1.0A, T_J= 25°C

f = 1KHz

—

V_drop

R_out

I_os

—

V

Output Resistance

19

550

1.5

–0.8

—

mΩ

mA

A

Output Short Circuit Current

Peak Output Current

T_J= 25°C

—

I_{o peak}

T_J= 25°C

—

Temperature Coefficient of Output Voltage

∆V_out/∆T_JI_out=5mA,0°C≤T_J≤ 125°C

—

mV/°C

Electrical Characteristics – MC7808

Vin = 14V, I = 500mA, 0°C ≤ T ≤ 125°C, Cin = 0.33µF, C = 0.1µF; unless otherwise noted.

out

J

out

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

T_J= 25°C

7.84

8.0

8.16

Output Voltage

V_out

V

10.5V ≤ Vin ≤ 23V,

5mA ≤ I_out≤ 1.0A, P_D≤ 15W

7.74

—

8.26

10.5V ≤ Vin < 25V

11V ≤ Vin < 15V

–

6

2

160

80

160

80

8.0

1

Line Regulation

(T_J= 25°C)

∆REG_line

mV

10mA ≤ I_out< 1.5A

250mA ≤ I_out< 750mA

I_out= 0, T_J= 25°C

10.5V ≤ Vin ≤ 25V

5mA ≤ I_out≤ 1.0A

–

12

4

Load Regulation

(T_J= 25°C)

∆REG_load

mV

mA

–

Quiescent Current

I_q

—

56

—

4.3

—

Quiescent Current Change

∆I_q

—

0.5

—

Output Noise Voltage

Ripple Rejection Ratio

Dropout Voltage

Vn

RR

10Hz≤f≤100KHz,T =25°C

52

72

2

µV

dB

J

f = 120Hz

I_out= 1.0A, T_J= 25°C

f = 1KHz

—

V_drop

R_out

I_os

—

V

Output Resistance

16

450

1.5

–0.8

—

mΩ

mA

A

Output Short Circuit Current

Peak Output Current

T_J= 25°C

—

I_{o peak}

T_J= 25°C

—

Temperature Coefficient of Output Voltage

∆V_out/∆T_JI_out=5mA,0°C≤T_J≤ 125°C

—

mV/°C

3 of 9

MC78xxCT Series

3-Terminal Fixed

Positive Voltage Regulators

Electrical Characteristics – MC7809

Vin = 15V, I = 500mA, 0°C ≤ T ≤ 125°C, Cin = 0.33µF, C = 0.1µF; unless otherwise noted.

out

J

out

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

T_J= 25°C

8.82

9

9.18

Output Voltage

V_out

V

11.5V ≤ Vin ≤ 24V,

5mA ≤ I_out≤ 1.0A, P_D≤ 15W

8.77

—

9.23

11.5V ≤ Vin < 27V

12V ≤ Vin < 16V

–

6

2

160

80

160

80

8

Line Regulation

(T_J= 25°C)

∆REG_line

mV

5mA ≤ I_out< 1.5A

250mA ≤ I_out< 750mA

I_out= 0, T_J= 25°C

11.5V ≤ Vin ≤ 27V

5mA ≤ I_out≤ 1.0A

–

12

4

Load Regulation

(T_J= 25°C)

∆REG_load

mV

mA

–

Quiescent Current

I_q

—

55

—

4.3

—

52

72

2

1

Quiescent Current Change

∆I_q

0.5

—

Output Noise Voltage

Ripple Rejection Ratio

Dropout Voltage

Vn

RR

10Hz≤f≤100KHz,T =25°C

µV

dB

J

f = 120Hz,12V ≤ Vin ≤ 22V

I_out= 1.0A, T_J= 25°C

f = 1KHz

V_drop

R_out

I_os

V

Output Resistance

16

450

1.5

–1

mΩ

mA

A

Output Short Circuit Current

Peak Output Current

T_J= 25°C

I_{o peak}

T_J= 25°C

Temperature Coefficient of Output Voltage

∆V_out/∆T_JI_out=5mA,0°C≤T_J≤ 125°C

mV/°C

Electrical Characteristics – MC7810

Vin = 16V, I = 500mA, 0°C ≤ T ≤ 125°C, Cin = 0.33µF, C = 0.1µF; unless otherwise noted.

out

J

out

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

T_J= 25°C

9.8

10

10.2

Output Voltage

V_out

V

12.5V ≤ Vin ≤ 25V,

5mA ≤ I_out≤ 1.0A, P_D≤ 15W

9.75

—

10.25

12.5V ≤ Vin < 28V

13V ≤ Vin < 17V

–

10

3

240

120

240

120

8

Line Regulation

(T_J= 25°C)

∆REG_line

mV

10mA ≤ I_out< 1.5A

250mA ≤ I_out< 750mA

I_out= 0, T_J= 25°C

12.5V ≤ Vin ≤ 28V

5mA ≤ I_out≤ 1.0A

–

12

4

Load Regulation

(T_J= 25°C)

∆REG_load

mV

mA

–

Quiescent Current

I_q

—

54

—

4.3

—

52

72

2

1

Quiescent Current Change

∆I_q

0.5

—

Output Noise Voltage

Ripple Rejection Ratio

Dropout Voltage

Vn

RR

10Hz≤f≤100KHz,T =25°C

µV

dB

J

f = 120Hz, 13V ≤ Vin ≤ 23V

I_out= 1.0A, T_J= 25°C

f = 1KHz

—

V_drop

R_out

I_os

—

V

Output Resistance

16

450

1.5

–1

—

mΩ

mA

A

Output Short Circuit Current

Peak Output Current

T_J= 25°C

—

I_{o peak}

T_J= 25°C

—

Temperature Coefficient of Output Voltage

∆V_out/∆T_JI_out=5mA,0°C≤T_J≤ 125°C

—

mV/°C

4 of 9

MC78xxCT Series

3-Terminal Fixed

Positive Voltage Regulators

Electrical Characteristics – MC7812

Vin = 19V, I = 500mA, 0°C ≤ T ≤ 125°C, Cin = 0.33µF, C = 0.1µF; unless otherwise noted.

out

J

out

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

T_J= 25°C

11.76

12.0

12.24

Output Voltage

V_out

V

14.5V ≤ Vin ≤ 27V,

5mA ≤ I_out≤ 1.0A, P_D≤ 15W

11.66

—

12.34

14V ≤ Vin < 30V

15V ≤ Vin < 19V

–

10

3

240

120

240

120

8

Line Regulation

(T_J= 25°C)

∆REG_line

mV

10mA ≤ I_out< 1.5A

250mA ≤ I_out< 750mA

I_out= 0, T_J= 25°C

14.5V ≤ Vin ≤ 30V

5mA ≤ I_out≤ 1.0A

–

12

4

Load Regulation

(T_J= 25°C)

∆REG_load

mV

mA

–

Quiescent Current

I_q

—

55

—

4.3

—

75

71

2

1

Quiescent Current Change

∆I_q

0.5

—

Output Noise Voltage

Ripple Rejection Ratio

Dropout Voltage

Vn

RR

10Hz≤f≤100KHz,T =25°C

µV

dB

J

f = 120Hz,15V ≤ Vin ≤ 25V

I_out= 1.0A, T_J= 25°C

f = 1KHz

—

V_drop

R_out

I_os

—

V

Output Resistance

18

350

1.5

–1

—

mΩ

mA

A

Output Short Circuit Current

Peak Output Current

T_J= 25°C

—

I_{o peak}

T_J= 25°C

—

Temperature Coefficient of Output Voltage

∆V_out/∆T_JI_out=5mA,0°C≤T_J≤ 125°C

—

mV/°C

Electrical Characteristics – MC7815

Vin = 23V, I = 500mA, 0°C ≤ T ≤ 125°C, Cin = 0.33µF, C = 0.1µF; unless otherwise noted.

out

J

out

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

T_J= 25°C

14.7

15.0

15.3

Output Voltage

V_out

V

17.5V ≤ Vin ≤ 30V,

5mA ≤ I_out≤ 1.0A, P_D≤ 15W

14.55

—

15.45

17.5V ≤ Vin < 30V

13V ≤ Vin < 17V

–

11

3

300

150

300

150

8

Line Regulation

(T_J= 25°C)

∆REG_line

mV

10mA ≤ I_out< 1.5A

250mA ≤ I_out< 750mA

I_out= 0, T_J= 25°C

17.5V ≤ Vin ≤ 30V

5mA ≤ I_out≤ 1.0A

–

12

4

Load Regulation

(T_J= 25°C)

∆REG_load

mV

mA

–

Quiescent Current

I_q

—

54

—

4.4

—

90

70

2

1

Quiescent Current Change

∆I_q

0.5

—

Output Noise Voltage

Ripple Rejection Ratio

Dropout Voltage

Vn

RR

10Hz≤f≤100KHz,T =25°C

µV

dB

J

f = 120Hz, 18V ≤ Vin ≤ 28V

I_out= 1.0A, T_J= 25°C

f = 1KHz

—

V_drop

R_out

I_os

—

V

Output Resistance

19

230

1.5

–1

—

mΩ

mA

A

Output Short Circuit Current

Peak Output Current

T_J= 25°C

—

I_{o peak}

T_J= 25°C

—

Temperature Coefficient of Output Voltage

∆V_out/∆T_JI_out=5mA,0°C≤T_J≤ 125°C

—

mV/°C

5 of 9

MC78xxCT Series

3-Terminal Fixed

Positive Voltage Regulators

Electrical Characteristics – MC7818

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

out

J

out

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

T_J= 25°C

17.64

18.0

18.36

Output Voltage

V_out

V

21V ≤ Vin ≤ 33V,

5mA ≤ I_out≤ 1.0A, P_D≤ 15W

17.44

—

18.56

21V ≤ Vin < 33V

22V ≤ Vin < 26V

–

15

5

360

180

360

180

8

Line Regulation

(T_J= 25°C)

∆REG_line

mV

10mA ≤ I_out< 1.5A

250mA ≤ I_out< 750mA

I_out= 0, T_J= 25°C

21V ≤ Vin ≤ 33V

–

12

4

Load Regulation

(T_J= 25°C)

∆REG_load

mV

mA

–

Quiescent Current

I_q

—

53

—

4.5

—

1

Quiescent Current Change

∆I_q

5mA ≤ I_out≤ 1.0A

—

0.5

—

Output Noise Voltage

Ripple Rejection Ratio

Dropout Voltage

Vn

RR

10Hz≤f≤100KHz,T =25°C

110

69

2

mV

dB

J

f = 120Hz,21V ≤ Vin ≤ 31V

I_out= 1.0A, T_J= 25°C

f = 1KHz

—

V_drop

R_out

I_os

—

V

Output Resistance

22

200

1.5

–1

—

mΩ

mA

A

Output Short Circuit Current

Peak Output Current

T_J= 25°C

—

I_{o peak}

T_J= 25°C

—

Temperature Coefficient of Output Voltage

∆V_out/∆T_JI_out=5mA,0°C≤T_J≤ 125°C

—

mV/°C

Electrical Characteristics – MC7824

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

out

J

out

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

T_J= 25°C

23.52

24.0

24.48

Output Voltage

V_out

V

26V ≤ Vin ≤ 38V,

5mA ≤ I_out≤ 1.0A, P_D≤ 15W

23.32

—

24.68

26V ≤ Vin < 38V

27V ≤ Vin < 32V

–

18

6

480

240

480

240

8

Line Regulation

(T_J= 25°C)

∆REG_line

mV

10mA ≤ I_out< 1.5A

250mA ≤ I_out< 750mA

I_out= 0, T_J= 25°C

26V ≤ Vin ≤ 38V

–

12

4

Load Regulation

(T_J= 25°C)

∆REG_load

mV

mA

–

Quiescent Current

I_q

—

50

—

4.6

—

1

Quiescent Current Change

∆I_q

5mA ≤ I_out≤ 1.0A

—

0.5

—

Output Noise Voltage

Ripple Rejection Ratio

Dropout Voltage

Vn

R_rej

10Hz≤f≤100KHz,T =25°C

170

66

µV

dB

J

f = 120Hz, 26V ≤ Vin ≤ 36V

I_out= 1.0A, T_J= 25°C

f = 1KHz

—

V_drop

R_out

I_os

2

—

V

Output Resistance

28

150

1.5

–1.5

—

mΩ

mA

A

Output Short Circuit Current

Peak Output Current

T_J= 25°C

—

I_{o peak}

T_J= 25°C

—

Temperature Coefficient of Output Voltage

∆V_out/∆T_JI_out=5mA,0°C≤T_J≤ 125°C

—

mV/°C

6 of 9

MC78xxCT Series

3-Terminal Fixed

Positive Voltage Regulators

Ratings and

Characteristic Curves^(T_A= 25°C unless otherwise noted)

Fig. 2 – Dropout Voltage

Fig. 1 – Power Dissipation vs.

vs. Junction Temperature

Ambient Temperature (MC78xxCT)

2.5

20

θ

T

= 5°C/W

= 65°C/W

JC

JA

I

= 1.0A

o

= 150°C

J (max)

16

12

8.0

4.0

0

2.0

1.5

I

= 500mA

o

θ

= 5°C/W

HS

I

= 200mA

o

θ

= 15°C/W

HS

I

= 20mA

o

1.0

0.5

No Heatsink

I

= 0mA

o

0

25

50

75

100

125

0

25

50

75

100

125

150

Ambient Temperatue (°C)

Fig. 4 –Ripple Rejection Ratio

Fig. 3 – Peak Output Current

vs. Output Voltage

3.00

80

70

f = 120Hz

I_o= 20mA

˘Vin = 1.0V (RMS)

T

= --40°C

J

2.25

1.50

0.75

0

T

= 0°C

J

60

50

40

T

= 25°C

Part # / V

in

J

7805 / 10V

7806 / 11V

7808 / 14V

7812 / 19V

7815 / 23V

7818 / 27V

7824 / 33V

T

= 125°C

J

4.0 6.0 8.0 10

12 14 16 18 20 22

24

0

6.0

12

18

24

30

V_o-- Output Voltage (V)

Input -- Output Voltage Differential (V)

Fig. 5 – Output Impedance (mΩ)

Fig. 6 – Output Voltage

vs. Output Voltage

vs. Junction Temperature

1000

100

10

6.20

f = 120Hz

Io = 500mA

V

= 10V

in

Vo = 6.0V

= 20mA

C

L

= OuF

I

o

6.10

6.00

5.90

5.80

4.0

8.0

12

16

20

24

--75 --50 --25

0

25

100 125 150 175 200

50

V_o-- Output Voltage (V)

T -- Junction Temperature (°C)

J

7 of 9

MC78xxCT Series

3-Terminal Fixed

Positive Voltage Regulators

Ratings and

Characteristic Curves^(T_A= 25°C unless otherwise noted)

Fig. 8 – Output Voltage

Fig. 7 – Quiescent Current

vs. Input Voltage

vs. Junction Temperature

8.0

5.0

V

= 10V

in

Vo = 5.0V

= 20mA

MC7805

= 25°C

MC78xxC

I

o

T

J

4.0

3.0

2.0

1.0

0

6.0

MC78xx

I_o= 10mA

V

= 10V

4.0

2.0

0

in

Vo = 5.0V

= 5.0mA

I_o= 1.0A

I

o

I_o= 500mA

0

2.0

4.0

6.0

8.0

10

12

14

16

--75

--50 --25

0

25

50

75

100

125

V_I-- Input Voltage (V)

TJ -- Junction Temperature (°C)

8 of 9

MC78xxCT Series

3-Terminal Fixed

Positive Voltage Regulators

TO-220 Case Outline

4.5

1.3

10

3

3.6

8.20

29

14

0.8

0.5

2.5 2.5

2.5

Dimensions in millimeters

9 of 9


型号：	MC7824CT-E3
厂家：	VISHAY
描述：	IC VREG 24 V FIXED POSITIVE REGULATOR, PSFM3, TO-220AB, 3 PIN, Fixed Positive Single Output Standard Regulator
文件：	总9页 (文件大小：170K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

MC7824CT-E3 [VISHAY]

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