Datasheet MC 7915 CTG Datasheet

July, 2013 − Rev. 18

1 Publication Order Number:

MC7900/D

MC7900 Series

1.0 A Negative Voltage Regulators

The MC7900 series of fixed output negative voltage regulators are intended as complements to the popular MC7800 series devices. These negative regulators are available in the same seven−voltage options as the MC7800 devices. In addition, one extra voltage option commonly employed in MECL systems is also available in the negative MC7900 series.

Available in fixed output voltage options from −5.0 V to −24 V, these regulators employ current limiting, thermal shutdown, and safe−area compensation − making them remarkably rugged under most operating conditions. With adequate heatsinking they can deliver output currents in excess of 1.0 A.

• No External Components Required

• Internal Thermal Overload Protection

• Internal Short Circuit Current Limiting

• Output Transistor Safe−Area Compensation

• Available in 2% Voltage Tolerance (See Ordering Information)

• Pb−Free Package May be Available. The G−Suffix Denotes a

Pb−Free Lead Finish

Figure 1. Representative Schematic Diagram

Gnd

V

O

V

I

2.4 k

25

3.6 k

1.2 k

1.1 k

2.0 k

12 k

1.0 k

4.0 k

2.0 k

14.7 k

2.0 k

8.0 k

1.0 k

1.6 k

4.0 k

0.3

10 k

20 k 20 k

20 pF

10 pF

240

750

R

1

R

2

This device contains 26 active transistors.

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TO−220

T SUFFIX

CASE 221AB

Heatsink surface

connected to Pin 2.

Pin 1. Ground

2. Input

3. Output

D

2

PAK

D2T SUFFIX

CASE 936

Heatsink surface (shown as terminal 4 in

case outline drawing) is connected to Pin 2.

1

2

3

1

2

3

STANDARD APPLICATION

A common ground is required between the input and the output voltages. The input voltage must remain typically 2.0 V above more negative even during the high point of the input ripple voltage.

These two digits of the type number indicate nominal voltage. C

in

is required if regulator is located an appreciable distance from power supply filter. C

O

improve stability and transient response.

MC79XX

Input

C

in

*

0.33 mF

C

O

**

1.0 mF

Output

XX,

**

See detailed ordering and shipping information in the package dimensions section on page 11 of this data sheet.

ORDERING INFORMATION

See general marking information in the device marking section on page 14 of this data sheet.

DEVICE MARKING INFORMATION

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2

MAXIMUM RATINGS (T

A

= +25°C, unless otherwise noted.)

Rating

Symbol Value Unit

Input Voltage (−5.0 V ≥ VO ≥ −18 V)

Input Voltage (24 V)

V

I

−35

−40

Vdc

Power Dissipation Case 221A

TA = +25°C P

D

Internally Limited W

Thermal Resistance, Junction−to−Ambient

q

JA

65 °C/W

Thermal Resistance, Junction−to−Case

q

JC

5.0 °C/W

Case 936 (D2PAK)

TA = +25°C P

D

Internally Limited W

Thermal Resistance, Junction−to−Ambient

q

JA

70 °C/W

Thermal Resistance, Junction−to−Case

q

JC

5.0 °C/W

Storage Junction Temperature Range T

stg

−65 to +150 °C

Junction Temperature T

J

+150 °C

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. *This device series contains ESD protection and exceeds the following tests:

Human Body Model 2000 V per MIL_STD_883, Method 3015 Machine Model Method 200 V

MC7905B, MC7905C ELECTRICAL CHARACTERISTICS

(VI = −10 V, IO = 500 mA, Tlow* < TJ < +125°C, unless otherwise noted.)

Characteristics

Symbol Min Typ Max Unit

Output Voltage (TJ = +25°C) V

O

−4.8 −5.0 −5.2 Vdc

Line Regulation (Note 1)

(T

J

= +25°C, IO = 100 mA)

−7.0 Vdc ≥ V

I

≥ −25 Vdc

−8.0 Vdc ≥ V

I

≥ −12 Vdc

(T

J

= +25°C, IO = 500 mA)

−7.0 Vdc ≥ V

I

≥ −25 Vdc

−8.0 Vdc ≥ V

I

≥ −12 Vdc

Reg

line

−

7.0

2.0

35

8.0

50 25

100

50

mV

Load Regulation, TJ = +25°C (Note 1)

5.0 mA ≤ I

O

≤ 1.5 A

250 mA ≤ I

O

≤ 750 mA

Reg

load

−

11

4.0

100

50

mV

Output Voltage

−7.0 Vdc ≥ V

I

≥ −20 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W

V

O

−4.75 − −5.25

Vdc

Input Bias Current (TJ = +25°C) I

IB

− 4.3 8.0 mA

Input Bias Current Change

−7.0 Vdc ≥ V

I

≥ −25 Vdc

5.0 mA ≤ I

O

≤ 1.5 A

DI

IB

−

1.3

0.5

mA

Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) V

n

− 40 −

mV

Ripple Rejection (IO = 20 mA, f = 120 Hz) RR − 70 − dB

Dropout Voltage

I

O

= 1.0 A, TJ = +25°C

VI−V

O

− 1.3 −

Vdc

Average Temperature Coefficient of Output Voltage

I

O

= 5.0 mA, Tlow* ≤ TJ ≤ +125°C

DVO/DT

− −1.0 −

mV/°C

1. 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.

*Tlow = −40°C for MC7905B and Tlow = 0°C for MC7905C.

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MC7905AC ELECTRICAL CHARACTERISTICS

(VI = −10 V, IO = 500 mA, 0°C < TJ < +125°C, unless otherwise noted.)

Characteristics

Symbol Min Typ Max Unit

Output Voltage (TJ = +25°C) V

O

−4.9 −5.0 −5.1 Vdc

Line Regulation (Note 2)

−8.0 Vdc ≥ V

I

≥ −12 Vdc; IO = 1.0 A, TJ = +25°C

−8.0 Vdc ≥ V

I

≥ −12 Vdc; IO = 1.0 A

−7.5 Vdc ≥ V

I

≥ −25 Vdc; IO = 500 mA

−7.0 Vdc ≥ V

I

≥ −20 Vdc; IO = 1.0 A, TJ = +25°C

Reg

line

−

2.0

7.0

6.0

25 50 50 50

mV

Load Regulation (Note 2)

5.0 mA ≤ I

O

≤ 1.5 A, TJ = +25°C

250 mA ≤ I

O

≤ 750 mA

5.0 mA ≤ I

O

≤ 1.0 A

Reg

load

−

11

4.0

9.0

100

50

100

mV

Output Voltage

−7.5 Vdc ≥ V

I

≥ −20 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W

V

O

−4.80 − − 5.20

Vdc

Input Bias Current I

IB

− 4.4 8.0 mA

Input Bias Current Change

−7.5 Vdc ≥ V

I

≥ −25 Vdc

5.0 mA ≤ I

O

≤ 1.0 A

5.0 mA ≤ I

O

≤ 1.5 A, TJ = +25°C

DI

IB

−

1.3

0.5

mA

Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) V

n

− 40 −

mV

Ripple Rejection (IO = mA, f = 120 Hz) RR − 70 − dB

Dropout Voltage (IO = 1.0 A. TJ = +25°C) VI−V

O

− 1.3 − Vdc

Average Temperature Coefficient of Output Voltage

I

O

= 5.0 A, 0°C ≤ TJ ≤ +125°C

DVO/DT

− −1.0 −

mV/°C

MC7905.2C ELECTRICAL CHARACTERISTICS

(VI = −10 V, IO = 500 mA, 0°C < TJ < +125°C, unless otherwise noted.)

Characteristics Symbol Min Typ Max Unit

Output Voltage (TJ = +25°C) V

O

−5.0 −5.2 −5.4 Vdc

Line Regulation (Note 2)

(T

J

= +25°C, IO = 100 mA)

−7.2 Vdc ≥ V

I

≥ −25 Vdc

−8.0 Vdc ≥ V

I

≥ −12 Vdc

(T

J

= +25°C, IO = 500 mA)

−7.2 Vdc ≥ V

I

≥ −25 Vdc

−8.0 Vdc ≥ V

I

≥ −12 Vdc

Reg

line

−

8.0

2.2

37

8.5

52 27

105

52

mV

Load Regulation, TJ = +25°C (Note 2)

5.0 mA ≤ I

O

≤ 1.5 A

250 mA ≤ I

O

≤ 750 mA

Reg

load

−

12

4.5

105

52

mV

Output Voltage

−7.2 Vdc ≥ V

I

≥ −20 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W

V

O

−4.95 − − 5.45

Vdc

Input Bias Current (TJ = +25°C) I

IB

− 4.3 8.0 mA

Input Bias Current Change

−7.2 Vdc ≥ V

I

≥ −25 Vdc

5.0 mA ≤ I

O

≤ 1.5 A

DI

IB

−

1.3

0.5

mA

Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) V

n

− 42 −

mV

Ripple Rejection (IO = 20 mA, f = 120 Hz) RR − 68 − dB

Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−V

O

− 1.3 − Vdc

Average Temperature Coefficient of Output Voltage

I

O

= 5.0 mA, 0°C ≤ TJ ≤ +125°C

DVO/DT

− −1.0 −

mV/°C

2. 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.

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MC7906C ELECTRICAL CHARACTERISTICS

(VI = −11 V, IO = 500 mA, 0°C < TJ < +125°C, unless otherwise noted.)

Characteristics

Symbol Min Typ Max Unit

Output Voltage (TJ = +25°C) V

O

−5.75 −6.0 −6.25 Vdc

Line Regulation (Note 3)

(T

J

= +25°C, IO = 100 mA)

−8.0 Vdc ≥ V

I

≥ −25 Vdc

−9.0 Vdc ≥ V

I

≥ −13 Vdc

(T

J

= +25°C, IO = 500 mA)

−8.0 Vdc ≥ V

I

≥ −25 Vdc

−9.0 Vdc ≥ V

I

≥ −13 Vdc

Reg

line

−

9.0

3.0

43 10

60 30

120

60

mV

Load Regulation, TJ = +25°C (Note 3)

5.0 mA ≤ I

O

≤ 1.5 A

250 mA ≤ I

O

≤ 750 mA

Reg

load

−

13

5.0

120

60

mV

Output Voltage

−8.0 Vdc ≥ V

I

≥ −21 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W

V

O

−5.7 − −6.3

Vdc

Input Bias Current (TJ = +25°C) I

IB

− 4.3 8.0 mA

Input Bias Current Change

−8.0 Vdc ≥ V

I

≥ −25 Vdc

5.0 mA ≤ I

O

≤ 1.5 A

DI

IB

−

1.3

0.5

mA

Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) V

n

− 45 −

mV

Ripple Rejection (IO = 20 mA, f = 120 Hz) RR − 65 − dB

Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−V

O

− 1.3 − Vdc

Average Temperature Coefficient of Output Voltage

I

O

= 5.0 A, 0°C ≤ TJ ≤ +125°C

DVO/DT

− −1.0 −

mV/°C

MC7908C ELECTRICAL CHARACTERISTICS

(VI = −14 V, IO = 500 mA, 0°C < TJ < +125°C, unless otherwise noted.)

Characteristics Symbol Min Typ Max Unit

Output Voltage (TJ = +25°C) V

O

−7.7 − 8.0 − 8.3 Vdc

Line Regulation (Note 3)

(T

J

= +25°C, IO = 100 mA)

−10.5 Vdc ≥ V

I

≥ −25 Vdc

−11 Vdc ≥ V

I

≥ −17 Vdc

(T

J

= +25°C, IO = 500 mA)

−10.5 Vdc ≥ V

I

≥ −25 Vdc

−11 Vdc ≥ V

I

≥ −17 Vdc

Reg

line

−

12

5.0

50 22

80 40

160

80

mV

Load Regulation, TJ = +25°C (Note 3)

5.0 mA ≤ I

O

≤ 1.5 A

250 mA ≤ I

O

≤ 750 mA

Reg

load

−

26

9.0

160

80

mV

Output Voltage

−10.5 Vdc ≥ V

I

≥ −23 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W

V

O

−7.6 − − 8.4

Vdc

Input Bias Current (TJ = +25°C) I

IB

− 4.3 8.0 mA

Input Bias Current Change

−10.5 Vdc ≥ V

I

≥ −25 Vdc

5.0 mA ≤ I

O

≤ 1.5 A

DI

IB

−

1.0

0.5

mA

Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) V

n

− 52 −

mV

Ripple Rejection (IO = 20 mA, f = 120 Hz) RR − 62 − dB

Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−V

O

− 1.3 − Vdc

Average Temperature Coefficient of Output Voltage

I

O

= 5.0 mA, 0°C ≤ TJ ≤ +125°C

DVO/DT

− −1.0 −

mV/°C

3. 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.

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MC7912B, MC7912C ELECTRICAL CHARACTERISTICS

(VI = −19 V, IO = 500 mA, Tlow* < TJ < +125°C, unless otherwise noted.)

Characteristics

Symbol Min Typ Max Unit

Output Voltage (TJ = +25°C) V

O

−11.5 −12 −12.5 Vdc

Line Regulation (Note 4)

(T

J

= +25°C, IO = 100 mA)

−14.5 Vdc ≥ V

I

≥ −30 Vdc

−16 Vdc ≥ V

I

≥ −22 Vdc

(T

J

= +25°C, IO = 500 mA)

−14.5 Vdc ≥ V

I

≥ −30 Vdc

−16 Vdc ≥ V

I

≥ −22 Vdc

Reg

line

−

13

6.0

55 24

120

60

240 120

mV

Load Regulation, TJ = +25°C (Note 4)

5.0 mA ≤ I

O

≤ 1.5 A

250 mA ≤ I

O

≤ 750 mA

Reg

load

−

46 17

240 120

mV

Output Voltage

−14.5 Vdc ≥ V

I

≥ −27 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W

V

O

−11.4 − −12.6

Vdc

Input Bias Current (TJ = +25°C) I

IB

− 4.4 8.0 mA

Input Bias Current Change

−14.5 Vdc ≥ V

I

≥ −30 Vdc

5.0 mA ≤ I

O

≤ 1.5 A

DI

IB

−

1.0

0.5

mA

Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) V

n

− 75 −

mV

Ripple Rejection (IO = 20 mA, f = 120 Hz) RR − 61 − dB

Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−V

O

− 1.3 − Vdc

Average Temperature Coefficient of Output Voltage

I

O

= 5.0 mA, Tlow* ≤ TJ ≤ +125°C

DVO/DT

− −1.0 −

mV/°C

MC7912AC ELECTRICAL CHARACTERISTICS

(VI = −19 V, IO = 500 mA, Tlow* < TJ < +125°C, unless otherwise noted.)

Characteristics Symbol Min Typ Max Unit

Output Voltage (TJ = +25°C) V

O

−11.75 −12 −12.25 Vdc

Line Regulation (Note 4)

−16 Vdc ≥ V

I

≥ −22 Vdc; IO = 1.0 A, TJ = +25°C

−16 Vdc ≥ V

I

≥ −22 Vdc; IO = 1.0 A

−14.8 Vdc ≥ V

I

≥ −30 Vdc; IO = 500 mA

−14.5 Vdc ≥ V

I

≥ −27 Vdc; IO = 1.0 A, TJ = +25°C

Reg

line

−

6.0 24 24 13

60 120 120 120

mV

Load Regulation (Note 4)

5.0 mA ≤ I

O

≤ 1.5 A, TJ = +25°C

250 mA ≤ I

O

≤ 750 mA

5.0 mA ≤ I

O

≤ 1.0 A

Reg

load

−

46 17 35

150

75 150

mV

Output Voltage

−14.8 Vdc ≥ V

I

≥ −27 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W

V

O

−11.5 − −12.5

Vdc

Input Bias Current I

IB

− 4.4 8.0 mA

Input Bias Current Change

−15 Vdc ≥ V

I

≥ −30 Vdc

5.0 mA ≤ I

O

≤ 1.0 A

5.0 mA ≤ I

O

≤ 1.5 A, TJ = +25°C

DI

IB

−

0.8

0.5

mA

Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) V

n

− 75 −

mV

Ripple Rejection (IO = 20 mA, f = 120 Hz) RR − 61 − dB

Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−V

O

− 1.3 − Vdc

Average Temperature Coefficient of Output Voltage

I

O

= 5.0 A, Tlow* ≤ TJ ≤ +125°C

DVO/DT

− −1.0 −

mV/°C

4. 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.

*Tlow = −40°C for MC7912B and Tlow = 0°C for MC7912C.

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MC7915B, MC7915C ELECTRICAL CHARACTERISTICS

(VI = − 23 V, IO = 500 mA, Tlow* < TJ < +125°C, unless otherwise noted.)

Characteristics

Symbol Min Typ Max Unit

Output Voltage (TJ = +25°C) V

O

−14.4 −15 −15.6 Vdc

Line Regulation (Note 5)

(T

J

= +25°C, IO = 100 mA)

−17.5 Vdc ≥ V

I

≥ −30 Vdc

−20 Vdc ≥ V

I

≥ −26 Vdc

(T

J

= +25°C, IO = 500 mA)

−17.5 Vdc ≥ V

I

≥ −30 Vdc

−20 Vdc ≥ V

I

≥ −26 Vdc

Reg

line

−

14

6.0

57 27

150

75

300 150

mV

Load Regulation, TJ = +25°C (Note 5)

5.0 mA ≤ I

O

≤ 1.5 A

250 mA ≤ I

O

≤ 750 mA

Reg

load

−

68 25

300 150

mV

Output Voltage

−17.5 Vdc ≥ V

I

≥ −30 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W

V

O

−14.25 − −15.75

Vdc

Input Bias Current (TJ = +25°C) I

IB

− 4.4 8.0 mA

Input Bias Current Change

−17.5 Vdc ≥ V

I

≥ −30 Vdc

5.0 mA ≤ I

O

≤ 1.5 A

DI

IB

−

1.0

0.5

mA

Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) V

n

− 90 −

mV

Ripple Rejection (IO = 20 mA, f = 120 Hz) RR − 60 − dB

Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−V

O

− 1.3 − Vdc

Average Temperature Coefficient of Output Voltage

I

O

= 5.0 A, Tlow* ≤ TJ ≤ +125°C

DVO/DT

− −1.0 −

mV/°C

MC7915AC ELECTRICAL CHARACTERISTICS

(VI = − 23 V, IO = 500 mA, Tlow* < TJ < +125°C, unless otherwise noted.)

Characteristics Symbol Min Typ Max Unit

Output Voltage (TJ = +25°C) V

O

−14.7 −15 −15.3 Vdc

Line Regulation (Note 5)

−20 Vdc ≥ V

I

≥ −26 Vdc, IO = 1.0 A, TJ = +25°C

−20 Vdc ≥ V

I

≥ −26 Vdc, IO = 1.0 A,

−17.9 Vdc ≥ V

I

≥ −30 Vdc, IO = 500 mA

−17.5 Vdc ≥ V

I

≥ −30 Vdc, IO = 1.0 A, TJ = +25°C

Reg

line

−

27 57 57 57

75 150 150 150

mV

Load Regulation (Note 5)

5.0 mA ≤ I

O

≤ 1.5 A, TJ = +25°C

250 mA ≤ I

O

≤ 750 mA

5.0 mA ≤ I

O

≤ 1.0 A

Reg

load

−

68 25 40

150

75 150

mV

Output Voltage

−17.9 Vdc ≥ V

I

≥ −30 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W

V

O

−14.4 − −15.6

Vdc

Input Bias Current I

IB

− 4.4 8.0 mA

Input Bias Current Change

−17.5 Vdc ≥ V

I

≥ −30 Vdc

5.0 mA ≤ I

O

≤ 1.0 A

5.0 mA ≤ I

O

≤ 1.5 A, TJ = +25°C

DI

IB

−

0.8

0.5

mA

Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) V

n

− 90 −

mV

Ripple Rejection (IO = 20 mA, f = 120 Hz) RR − 60 − dB

Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−V

O

− 1.3 − Vdc

Average Temperature Coefficient of Output Voltage

I

O

= 5.0 mA, Tlow* ≤ TJ ≤ +125°C

DVO/DT

− −1.0 −

mV/°C

5. 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.

*Tlow = −40°C for MC7915B and Tlow = 0°C for MC7915C.

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MC7918C ELECTRICAL CHARACTERISTICS

(VI = − 27 V, IO = 500 mA, 0°C < TJ < +125°C, unless otherwise noted.)

Characteristics

Symbol Min Typ Max Unit

Output Voltage (TJ = +25°C) V

O

−17.3 −18 −18.7 Vdc

Line Regulation (Note 6)

(T

J

= +25°C, IO = 100 mA)

−21 Vdc ≥ V

I

≥ −33 Vdc

−24 Vdc ≥ V

I

≥ −30 Vdc

(T

J

= +25°C, IO = 500 mA)

−21 Vdc ≥ V

I

≥ −33 Vdc

−24 Vdc ≥ V

I

≥ −30 Vdc

Reg

line

−

25 10

90 50

180

90

360 180

mV

Load Regulation, TJ = +25°C (Note 6)

5.0 mA ≤ I

O

≤ 1.5 A

250 mA ≤ I

O

≤ 750 mA

Reg

load

−

110

55

360 180

mV

Output Voltage

−21 Vdc ≥ V

I

≥ −33 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W

V

O

−17.1 − −18.9

Vdc

Input Bias Current (TJ = +25°C) I

IB

− 4.5 8.0 mA

Input Bias Current Change

−21 Vdc ≥ V

I

≥ −33 Vdc

5.0 mA ≤ I

O

≤ 1.5 A

DI

IB

−

1.0

0.5

mA

Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) V

n

− 110 −

mV

Ripple Rejection (IO = 20 mA, f = 120 Hz) RR − 59 − dB

Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−V

O

− 1.3 − Vdc

Average Temperature Coefficient of Output Voltage

I

O

= 5.0 mA, 0°C ≤ TJ ≤ +125°C

DVO/DT

− −1.0 −

mV/°C

MC7924B, MC7924C ELECTRICAL CHARACTERISTICS

(VI = − 33 V, IO = 500 mA, Tlow* < TJ < +125°C, unless otherwise noted.)

Characteristics Symbol Min Typ Max Unit

Output Voltage (TJ = +25°C) V

O

−23 −24 −25 Vdc

Line Regulation (Note 6)

(T

J

= +25°C, IO = 100 mA)

−27 Vdc ≥ V

I

≥ −38 Vdc

−30 Vdc ≥ V

I

≥ −36 Vdc

(T

J

= +25°C, IO = 500 mA)

−27 Vdc ≥ V

I

≥ −38 Vdc

−30 Vdc ≥ V

I

≥ −36 Vdc

Reg

line

−

31 14

118

70

240 120

470 240

mV

Load Regulation, TJ = +25°C (Note 6)

5.0 mA ≤ I

O

≤ 1.5 A

250 mA ≤ I

O

≤ 750 mA

Reg

load

−

150

85

480 240

mV

Output Voltage

−27 Vdc ≥ V

I

≥ −38 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, P ≤ 15 W

V

O

−22.8 − − 25.2

Vdc

Input Bias Current (TJ = +25°C) I

IB

− 4.6 8.0 mA

Input Bias Current Change

−27 Vdc ≥ V

I

≥ −38 Vdc

5.0 mA ≤ I

O

≤ 1.5 A

DI

IB

−

1.0

0.5

mA

Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) V

n

− 170 −

mV

Ripple Rejection (IO = 20 mA, f = 120 Hz) RR − 56 − dB

Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−V

O

− 1.3 − Vdc

Average Temperature Coefficient of Output Voltage

I

O

= 5.0 mA, Tlow* ≤ TJ ≤ +125°C

DVO/DT

− −1.0 −

mV/°C

6. 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.

*Tlow = −40°C for MC7924B and Tlow = 0°C for MC7924C.

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8

Figure 2. Worst Case Power Dissipation as a

Function of Ambient Temperature

Figure 3. Peak Output Current as a Function

of Input−Output Differential Voltage

Figure 4. Ripple Rejection as a

Function of Frequency

Figure 5. Ripple Rejection as a Function

of Output Voltage

Figure 6. Output Voltage as a Function

of Junction Temperature

Figure 7. Quiescent Current as a

Function of Temperature

, POWER DISSIPATION (W)

D

P

Infinite Heatsink

q

HS

= 5°C/W

qHS = 15°C/W

No Heatsink

q

JC

= 5° C/W

q

JA

= 65° C/W

P

D

(max) = 15W

, OUTPUT CURRENT (A)

O

I

RR, RIPPLE REJECTION (dB)

Vin = -11 V V

O

= -6.0 V

I

O

= 20 mA

RR, RIPPLE REJECTION (dB)

f = 120 Hz I

O

= 20 mA

DV

in

= 1.0 V(RMS)

, OUTPUT VOLTAGE (-V)

O

V

Vin = -11 V V

D

= -6.0 V

I

O

= 20 mA

, INPUT BIAS CURRENT (mA)

IB

I

Vin = -11 V VO = -6.0 V I

O

= 20 mA

TJ = +25°C

20 10

5.0

4.0

3.0

2.0

1.0

0.5

0.4

0.3

0.2

0.1

2.5

2.0

1.5

1.0

0.5

0

100

80

60

40

20

80

70

60

50

40

6.26

6.22

6.18

6.14

6.10

6.06

5.2

5.0

4.8

4.6

4.4

4.2

25 50 75 100 125 150

T

A

, AMBIENT TEMPERATURE (°C)

0 3.0 6.0 9.0 12 15 18 21 24 27 30

|VI -VO| INPUT-OUTPUT VOLTAGE DIFFERENTIAL (V)

10 100 1.0 k 10 k 100 k

f, FREQUENCY (Hz)

2.0 4.0 6.0 8.0 10 12 14 16 18 20 22 V

O

, OUTPUT VOLTAGE (V)

-25 0 25 50 75 100 125 150 175

T

J

, JUNCTION TEMPERATURE (°C)

0 25 50 75 100 125

TJ, JUNCTION TEMPERATURE (°C)

0

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9

APPLICATIONS INFORMATION

Design Considerations

The MC7900 Series of fixed voltage regulators are designed with Thermal overload Protection that shuts down the circuit when subjected to an excessive power overload condition. Internal Short Circuit Protection that limits the maximum current the circuit will pass, and Output Transistor Safe−Area Compensation that reduces the output short circuit current as the voltage across the pass transistor is increased.

In many low current applications, compensation capacitors are not required. However, it is recommended that the regulator input be bypassed with a capacitor if the regulator is connected to the power supply filter with long wire lengths, or if the output load capacitance is large. An input bypass capacitor should be selected to provide good high−frequency characteristics to insure stable operation under all load conditions. A 0.33 mF or larger tantalum, mylar, or other capacitor having low internal impedance at high frequencies should be chosen. The capacitor chosen should have an equivalent series resistance of less than

0.7 W. The bypass capacitor should be mounted with the shortest possible leads directly across the regulators input terminals. Normally good construction techniques should be used to minimize ground loops and lead resistance drops since the regulator has no external sense lead. Bypassing the output is also recommended.

Figure 8. Current Regulator

-20 V Input

MC7905

10

R

IO = 200 mA

VO ≤ 10 V

1.0 mF

Gnd Gnd

+

1.0 mF +

The MC7905, − 5.0 V regulator can be used as a constant current source when connected as above. The output current is the sum of resistor R current and quiescent bias current as follows:

IO+

5.0 V R

) I

B

The quiescent current for this regulator is typically 4.3 mA. The 5.0 V regulator was chosen to minimize dissipation and to allow the output voltage to operate to within 6.0 V below the input voltage.

Figure 9. Current Boost Regulator

(−5.0 V @ 4.0 A, with 5.0 A Current Limiting)

*Mounted on heatsink.

-10 V Input

0.56

MJE200* or Equiv

5.6

2N3055* or Equiv

MC7905*

1.0 mF

-5.0 V Output

Gnd Gnd

+

1.0 mF

10 mF

+

When a boost transistor is used, short circuit currents are equal to the sum of the series pass and regulator limits, which are measured at 3.2 A and 1.8 A respectively in this case. Series pass limiting is approximately equal to 0.6 V/R

SC

. Operation beyond this point to the peak current capability of the MC7905C is possible if the regulator is mounted on a heatsink; otherwise thermal shutdown will occur when the additional load current is picked up by the regulator.

Figure 10. Operational Amplifier Supply

+20 V

Input

+15 V Output

0.33 mF

1N4001G

or Equiv

Gnd

1.0 mF

+

-20 V Input

-15 V Output

MC7815

MC7915

+

1.0 mF

1N4001G

or Equiv

Clamp diode

1N4001G or Equiv

The MC7815 and MC7915 positive and negative regulators may be connected as shown to obtain a dual power supply for operational amplifiers. A clamp diode should be used at the output of the MC7815 to prevent potential latch−up problems whenever the output of the positive regulator (MC7815) is drawn below ground with an output current greater than 200 mA.

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10

Protection Diodes

When external capacitors are used with MC7900 series regulator it is sometimes necessary to add protection diodes to prevent the capacitors from discharging through low current points into the regulator or from output polarity reversals. Generally, no protection diode is required for values of output capacitance less then 10mF. Figure 11 shows the MC7915 with the recommended protection diodes.

• Opposite Polarity Protection

Diode D

1 protects the regulator from output polarity

reversals during startup, power off and short-circuit operation.

• Reverse-bias Protection

Diode D

2 prevents output capacitor from discharging thru

the MC7915 during an input short circuit or fast switch off of power supply.

Figure 11. Protection Diodes

Gnd

+

-20 V Input

-15 V Output

MC7915

+

1.0 mF 1.0 mF

MBRS140

or Equiv

D1

MBRS140

or Equiv

D2

DEFINITIONS

Line Regulation − The change in output voltage for a change in the input voltage. The measurement is made under conditions of low dissipation or by using pulse techniques such that the average chip temperature is not significantly affected.

Load Regulation − The change in output voltage for a change in load current at constant chip temperature.

Maximum Power Dissipation − The maximum total device dissipation for which the regulator will operate within specifications.

Input Bias Current − That part of the input current that

is not delivered to the load.

Output Noise Voltage − The rms AC voltage at the output, with constant load and no input ripple, measured over a specified frequency range.

Long Term Stability − Output voltage stability under accelerated life test conditions with the maximum rated voltage listed in the devices’ electrical characteristics and maximum power dissipation.

Figure 12. D2PAK Thermal Resistance and Maximum

Power Dissipation versus P.C.B. Copper Length

R , THERMAL RESISTANCE

JAθ

JUNCTION‐TO‐AIR ( C/W)°

P

D(max)

for TA = +50°C

ÎÎÎ

P

D

, MAXIMUM POWER DISSIPATION (W)

30

40

50

60

70

80

010203025155.0

L, LENGTH OF COPPER (mm)

Minimum Size Pad

2.0 oz. Copper L

L

Free Air Mounted

Vertically

R

q

JA

1.0

1.5

2.0

2.5

3.0

3.5

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11

ORDERING INFORMATION

Device

Nominal

Output Voltage

Tolerance

Package

Operating

Temperature Range

Shipping

†

MC7905ACD2T

−5.0 V 2%

D2PAK

TJ = 0°C to +125°C

50 Units/Rail

MC7905ACD2TG D2PAK

(Pb−Free)

50 Units/Rail

MC7905ACD2TR4 D2PAK 800 Tape & Reel

MC7905ACD2TR4G D2PAK

(Pb−Free)

800 Tape & Reel

MC7905ACT TO−220 50 Units/Rail

MC7905ACTG TO−220

(Pb−Free)

50 Units/Rail

MC7905BD2T

4%

D2PAK

TJ = −40°C to +125°C

50 Units/Rail

MC7905BD2TG D2PAK

(Pb−Free)

50 Units/Rail

MC7905BD2TR4 D2PAK 800 Tape & Reel

MC7905BD2TR4G D2PAK

(Pb−Free)

800 Tape & Reel

MC7905BT TO−220 50 Units/Rail

MC7905BTG TO−220

(Pb−Free)

50 Units/Rail

MC7905CD2T D2PAK

TJ = 0°C to +125°C

50 Units/Rail

MC7905CD2TG D2PAK

(Pb−Free)

50 Units/Rail

MC7905CD2TR4 D2PAK 800 Tape & Reel

MC7905CD2TR4G D2PAK

(Pb−Free)

800 Tape & Reel

MC7905CT TO−220 50 Units/Rail

MC7905CTG TO−220

(Pb−Free)

50 Units/Rail

MC7905.2CT

−5.2 V 4%

TO−220

TJ = 0°C to +125°C

50 Units/Rail

MC7905.2CTG TO−220

(Pb−Free)

50 Units/Rail

MC7906CD2T

−6.0 V 4%

D2PAK

TJ = 0°C to +125°C

50 Units/Rail

MC7906CD2TG D2PAK

(Pb−Free)

50 Units/Rail

MC7906CT TO−220 50 Units/Rail

MC7906CTG TO−220

(Pb−Free)

50 Units/Rail

MC7908ACT

−8.0 V 2%

TO−220

TJ = 0°C to +125°C

50 Units/Rail

MC7908ACTG TO−220

(Pb−Free)

50 Units/Rail

MC7908CD2T

4%

D2PAK 50 Units/Rail

MC7908CD2TG D2PAK

(Pb−Free)

50 Units/Rail

MC7908CD2TR4 D2PAK 800 Tape & Reel

MC7908CD2TR4G D2PAK

(Pb−Free)

800 Tape & Reel

MC7908CT TO−220 50 Units/Rail

MC7908CTG TO−220

(Pb−Free)

50 Units/Rail

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12

Device Shipping

†

Operating

Temperature Range

Package

Output Voltage

Tolerance

Nominal

Output Voltage

MC7912ACD2T

−12 V 2%

D2PAK

TJ = 0°C to +125°C

50 Units/Rail

MC7912ACD2TG D2PAK

(Pb−Free)

50 Units/Rail

MC7912ACD2TR4 D2PAK 800 Tape & Reel

MC7912ACD2TR4G D2PAK

(Pb−Free)

800 Tape & Reel

MC7912ACT TO−220 50 Units/Rail

MC7912ACTG TO−220

(Pb−Free)

50 Units/Rail

MC7912BD2T

4%

D2PAK

TJ = −40°C to +125°C

50 Units/Rail

MC7912BD2TG D2PAK

(Pb−Free)

50 Units/Rail

MC7912BD2TR4 D2PAK 800 Tape & Reel

MC7912BD2TR4G D2PAK

(Pb−Free)

800 Tape & Reel

MC7912BT TO−220 50 Units/Rail

MC7912BTG TO−220

(Pb−Free)

50 Units/Rail

MC7912CD2T D2PAK

TJ = 0°C to +125°C

50 Units/Rail

MC7912CD2TG D2PAK

(Pb−Free)

50 Units/Rail

MC7912CD2TR4 D2PAK 800 Tape & Reel

MC7912CD2TR4G D2PAK

(Pb−Free)

800 Tape & Reel

MC7912CT TO−220 50 Units/Rail

MC7912CTG TO−220

(Pb−Free)

50 Units/Rail

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13

Device Shipping

†

Operating

Temperature Range

Package

Output Voltage

Tolerance

Nominal

Output Voltage

MC7915ACD2T

− 15 V 2%

D2PAK

TJ = 0°C to +125°C

50 Units/Rail

MC7915ACD2TG D2PAK

(Pb−Free)

50 Units/Rail

MC7915ACT TO−220 50 Units/Rail

MC7915ACTG TO−220

(Pb−Free)

50 Units/Rail

MC7915BD2T

4%

D2PAK

TJ = −40°C to +125°C

50 Units/Rail

MC7915BD2TG D2PAK

(Pb−Free)

50 Units/Rail

MC7915BT TO−220 50 Units/Rail

MC7915BTG TO−220

(Pb−Free)

50 Units/Rail

MC7915BD2TR4G D2PAK

(Pb−Free)

800 Tape & Reel

MC7915CD2T D2PAK

TJ = 0°C to +125°C

50 Units/Rail

MC7915CD2TG D2PAK

(Pb−Free)

50 Units/Rail

MC7915CD2TR4 D2PAK 800 Tape & Reel

MC7915CD2TR4G D2PAK

(Pb−Free)

800 Tape & Reel

MC7915CT TO−220 50 Units/Rail

MC7915CTG TO−220

(Pb−Free)

50 Units/Rail

MC7918CT

− 18 V 4%

TO−220

TJ = 0°C to +125°C

50 Units/Rail

MC7918CTG TO−220

(Pb−Free)

50 Units/Rail

MC7924BT

− 24 V 4%

TO−220

TJ = −40°C to +125°C

50 Units/Rail

MC7924BTG TO−220

(Pb−Free)

50 Units/Rail

MC7924CD2T D2PAK

TJ = 0°C to +125°C

50 Units/Rail

MC7924CD2TG D2PAK

(Pb−Free)

50 Units/Rail

MC7924CT TO−220 50 Units/Rail

MC7924CTG TO−220

(Pb−Free)

50 Units/Rail

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.

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14

TO−220

T SUFFIX

CASE 221AB

MARKING DIAGRAMS

xx = Nominal Voltage A = Assembly Location WL = Wafer Lot Y = Year WW = Work Week G = Pb−Free Device

1

MC

79xxACT

AWLYWWG

23 1

MC

7905.2CT

AWLYWWG

23 1

MC

79xxBT

AWLYWWG

23 1

MC

79xxCT

AWLYWWG

23

D

2

PAK

D2T SUFFIX

CASE 936

MC 79xxACD2T AWLYWWG

1

2

3

MC

79xxBD2T

AWLYWWG

1

2

3

MC

79xxCD2T

AWLYWWG

1

2

3

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15

PACKAGE DIMENSIONS

D2PAK

D2T SUFFIX

CASE 936−03

ISSUE D

5 REF5 REF

V

U

TERMINAL 4

NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI

Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCHES. 3. TAB CONTOUR OPTIONAL WITHIN

DIMENSIONS A AND K. 4. DIMENSIONS U AND V ESTABLISH A MINIMUM

MOUNTING SURFACE FOR TERMINAL 4. 5. DIMENSIONS A AND B DO NOT INCLUDE

MOLD FLASH OR GATE PROTRUSIONS. MOLD

FLASH AND GATE PROTRUSIONS NOT TO

EXCEED 0.025 (0.635) MAXIMUM. 6. SINGLE GAUGE DESIGN WILL BE SHIPPED

AFTER FPCN EXPIRATION IN OCTOBER 2011.

DIMAMIN MAX MIN MAX

MILLIMETERS

0.386 0.403 9.804 10.236

INCHES

B 0.356 0.368 9.042 9.347 C 0.170 0.180 4.318 4.572 D 0.026 0.036 0.660 0.914 E 0.045 0.055 1.143 1.397

F 0.051 REF 1.295 REF

G 0.100 BSC 2.540 BSC

H 0.539 0.579 13.691 14.707 J 0.125 MAX 3.175 MAX K 0.050 REF 1.270 REF L 0.000 0.010 0.000 0.254

M 0.088 0.102 2.235 2.591

N 0.018 0.026 0.457 0.660 P 0.058 0.078 1.473 1.981 R S 0.116 REF 2.946 REF U 0.200 MIN 5.080 MIN V 0.250 MIN 6.350 MIN

__

A

12 3

K

F

B

J

S

H

D

M

0.010 (0.254) T

E

OPTIONAL CHAMFER

*For additional information on our Pb−Free strategy and soldering

details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D.

SOLDERING FOOTPRINT*

8.380

5.080

DIMENSIONS: MILLIMETERS

PITCH

2X

16.155

1.016

2X

10.490

3.504

BOTTOM VIEW

OPTIONAL CONSTRUCTIONS

TOP VIEW

SIDE VIEW

DUAL GAUGE

BOTTOM VIEW

L

T

P

R

DETAIL C

SEATING PLANE

2X

G

N

M

CONSTRUCTION

D

C

DETAIL C

E

OPTIONAL CHAMFER

SIDE VIEW

SINGLE GAUGE

CONSTRUCTION

S

C

DETAIL C

TT

D

E 0.018 0.026 0.457 0.660

S

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16

PACKAGE DIMENSIONS

TO−220, SINGLE GAUGE

T SUFFIX

CASE 221AB

ISSUE A

NOTES:

1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982.

2. CONTROLLING DIMENSION: INCHES.

3. DIMENSION Z DEFINES A ZONE WHERE ALL BODY AND LEAD IRREGULARITIES ARE ALLOWED.

4. PRODUCT SHIPPED PRIOR TO 2008 HAD DIMENSIONS S = 0.045 - 0.055 INCHES (1.143 - 1.397 MM)

DIM MIN MAX MIN MAX

MILLIMETERSINCHES

A 0.570 0.620 14.48 15.75 B 0.380 0.405 9.66 10.28 C 0.160 0.190 4.07 4.82 D 0.025 0.035 0.64 0.88

F 0.142 0.147 3.61 3.73 G 0.095 0.105 2.42 2.66 H 0.110 0.155 2.80 3.93

J 0.018 0.025 0.46 0.64 K 0.500 0.562 12.70 14.27

L 0.045 0.060 1.15 1.52 N 0.190 0.210 4.83 5.33 Q 0.100 0.120 2.54 3.04 R 0.080 0.110 2.04 2.79

S 0.020 0.024 0.508 0.61

T 0.235 0.255 5.97 6.47 U 0.000 0.050 0.00 1.27

V 0.045 --- 1.15 ---

Z --- 0.080 --- 2.04

B

Q

H

Z

L

V

G

N

A

K

F

123

4

D

SEATING PLANE

−T−

C

S

T

U

R

J

ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks,

copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.

PUBLICATION ORDERING INFORMATION

N. American Technical Support: 800−282−9855 Toll Free

USA/Canada

Europe, Middle East and Africa Technical Support:

Phone: 421 33 790 2910

Japan Customer Focus Center

Phone: 81−3−5817−1050

MC7900/D

LITERATURE FULFILLMENT:

Literature Distribution Center for ON Semiconductor P.O. Box 5163, Denver, Colorado 80217 USA

Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada Email: orderlit@onsemi.com

ON Semiconductor Website: www.onsemi.com

Order Literature: http://www.onsemi.com/orderlit

For additional information, please contact your local Sales Representative

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