Datasheet MC 7905 CTG Datasheet

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

2.0 k

3.6 k

1.2 k

2.4 k

14.7 k

25

4.0 k

12 k

1.0 k

1.1 k

This device contains 26 active transistors.

Figure 1. Representative Schematic Diagram

8.0 k

1.0 k

1.6 k

20 k 20 k

20 pF

10 k

10 pF

10 k

240

4.0 k

750

R

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TO−220

T SUFFIX

CASE 221AB

Heatsink surface

connected to Pin 2.

Pin 1. Ground

2. Input

3. Output

2

D

PAK

D2T SUFFIX

Gnd

1

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

2

0.3

Input

*

V

O

V

I

C

in

0.33 mF

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

XX,

indicate nominal voltage. C

is required if regulator is located an

**

in

appreciable distance from power supply filter. C

improve stability and transient response.

**

O

MC79XX

C

**

O

1.0 mF

Output

August, 2006 − Rev. 14

ORDERING INFORMATION

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

DEVICE MARKING INFORMATION

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

1 Publication Order Number:

MC7900/D

MC7900 Series

MAXIMUM RATINGS (T

Input Voltage (−5.0 V ≥ VO ≥ −18 V)

Input Voltage (24 V)

= +25°C, unless otherwise noted.)

A

Rating

Symbol Value Unit

V

I

−35

Vdc

−40

Power Dissipation Case 221A

TA = +25°C P Thermal Resistance, Junction−to−Ambient Thermal Resistance, Junction−to−Case

D

q

JA

q

JC

Internally Limited W

65 °C/W

5.0 °C/W

Case 936 (D2PAK)

TA = +25°C P Thermal Resistance, Junction−to−Ambient

Thermal Resistance, Junction−to−Case Storage Junction Temperature Range T Junction Temperature T

D

q

JA

q

JC stg

J

Internally Limited W

70 °C/W

5.0 °C/W

−65 to +150 °C +150 °C

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Opera t i n g 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

Characteristics

Output Voltage (TJ = +25°C) V Line Regulation (Note 1)

= +25°C, IO = 100 mA)

(T

J

−7.0 Vdc ≥ V

−8.0 Vdc ≥ V = +25°C, IO = 500 mA)

(T

J

−7.0 Vdc ≥ V

−8.0 Vdc ≥ V

Load Regulation, TJ = +25°C (Note 1)

5.0 mA ≤ I 250 mA ≤ I

Output Voltage

−7.0 Vdc ≥ V Input Bias Current (TJ = +25°C) I Input Bias Current Change

−7.0 Vdc ≥ V

5.0 mA ≤ I Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) V Ripple Rejection (IO = 20 mA, f = 120 Hz) RR − 70 − dB Dropout Voltage

= 1.0 A, TJ = +25°C

I

O

Average Temperature Coefficient of Output Voltage

= 5.0 mA, Tlow* ≤ TJ ≤ +125°C

I

O

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.

≥ −25 Vdc

I

≥ −12 Vdc

I

≥ −25 Vdc

I

≥ −12 Vdc

I

≤ 1.5 A

O

≤ 750 mA

O

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

I

≥ −25 Vdc

I

≤ 1.5 A

O

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

Symbol Min Typ Max Unit

−4.8 −5.0 −5.2 Vdc

−

7.0

2.0

35

8.0

11

4.0

Reg

O

line

load

V

O

−4.75 − −5.25

IB

DI

IB

− 4.3 8.0 mA

−

− 40 −

VI−V

n

O

− 1.3 −

DVO/DT

− −1.0 −

mV

50 25

100

50

mV

100

50

Vdc

mA

−

1.3

0.5 mV

Vdc

mV/°C

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2

MC7900 Series

MC7905AC ELECTRICAL CHARACTERISTICS

Characteristics

Output Voltage (TJ = +25°C) V Line Regulation (Note 2)

−8.0 Vdc ≥ V

−7.5 Vdc ≥ V

−7.0 Vdc ≥ V

≥ −12 Vdc; IO = 1.0 A, TJ = +25°C

I

≥ −12 Vdc; IO = 1.0 A

I

≥ −25 Vdc; IO = 500 mA

I

≥ −20 Vdc; IO = 1.0 A, TJ = +25°C

I

Load Regulation (Note 2)

5.0 mA ≤ I 250 mA ≤ I

5.0 mA ≤ I

≤ 1.5 A, TJ = +25°C

O

≤ 750 mA

O

≤ 1.0 A

O

Output Voltage

−7.5 Vdc ≥ V

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

I

Input Bias Current I Input Bias Current Change

−7.5 Vdc ≥ V

5.0 mA ≤ I

≥ −25 Vdc

I

≤ 1.0 A

O

≤ 1.5 A, TJ = +25°C

O

Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) V Ripple Rejection (IO = mA, f = 120 Hz) RR − 70 − dB Dropout Voltage (IO = 1.0 A. TJ = +25°C) VI−V Average Temperature Coefficient of Output Voltage

= 5.0 A, 0°C ≤ TJ ≤ +125°C

I

O

MC7905.2C ELECTRICAL CHARACTERISTICS

Characteristics Symbol Min Typ Max Unit

Output Voltage (TJ = +25°C) V Line Regulation (Note 2)

= +25°C, IO = 100 mA)

(T

J

−7.2 Vdc ≥ V

−8.0 Vdc ≥ V = +25°C, IO = 500 mA)

(T

J

−7.2 Vdc ≥ V

−8.0 Vdc ≥ V

Load Regulation, TJ = +25°C (Note 2)

5.0 mA ≤ I 250 mA ≤ I

Output Voltage

−7.2 Vdc ≥ V Input Bias Current (TJ = +25°C) I Input Bias Current Change

−7.2 Vdc ≥ V

5.0 mA ≤ I Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) V Ripple Rejection (IO = 20 mA, f = 120 Hz) RR − 68 − dB Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−V Average Temperature Coefficient of Output Voltage

= 5.0 mA, 0°C ≤ TJ ≤ +125°C

I

O

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.

≥ −25 Vdc

I

≥ −12 Vdc

I

≥ −25 Vdc

I

≥ −12 Vdc

I

≤ 1.5 A

O

≤ 750 mA

O

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

I

≥ −25 Vdc

I

≤ 1.5 A

O

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

Symbol Min Typ Max Unit

−4.9 −5.0 −5.1 Vdc

Reg

O

line

−

Reg

load

−

V

O

−4.80 − −5.20

IB

DI

IB

− 4.4 8.0 mA

−

n

O

− 40 −

− 1.3 − Vdc

DVO/DT

− −1.0 −

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

−5.0 −5.2 −5.4 Vdc

Reg

O

line

−

Reg

load

−

V

O

−4.95 − −5.45

IB

DI

IB

− 4.3 8.0 mA

−

n

O

− 42 −

− 1.3 − Vdc

DVO/DT

− −1.0 −

2.0

7.0

6.0

11

4.0

9.0

8.0

2.2

37

8.5

12

4.5

25

mV

50 50 50

mV

100

50

100

Vdc

mA

−

1.3

0.5

0.5 mV

mV/°C

mV

52 27

105

52

mV

105

52

Vdc

mA

−

1.3

0.5 mV

mV/°C

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3

MC7900 Series

MC7906C ELECTRICAL CHARACTERISTICS

Characteristics

Output Voltage (TJ = +25°C) V Line Regulation (Note 3)

= +25°C, IO = 100 mA)

(T

J

−8.0 Vdc ≥ V

−9.0 Vdc ≥ V = +25°C, IO = 500 mA)

(T

J

−8.0 Vdc ≥ V

−9.0 Vdc ≥ V

≥ −25 Vdc

I

≥ −13 Vdc

I

≥ −25 Vdc

I

≥ −13 Vdc

I

Load Regulation, TJ = +25°C (Note 3)

5.0 mA ≤ I 250 mA ≤ I

≤ 1.5 A

O

≤ 750 mA

O

Output Voltage

−8.0 Vdc ≥ V

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

I

Input Bias Current (TJ = +25°C) I Input Bias Current Change

−8.0 Vdc ≥ V

5.0 mA ≤ I

≥ −25 Vdc

I

≤ 1.5 A

O

Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) V Ripple Rejection (IO = 20 mA, f = 120 Hz) RR − 65 − dB Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−V Average Temperature Coefficient of Output Voltage

= 5.0 A, 0°C ≤ TJ ≤ +125°C

I

O

MC7908C ELECTRICAL CHARACTERISTICS

Characteristics Symbol Min Typ Max Unit

Output Voltage (TJ = +25°C) V Line Regulation (Note 3)

= +25°C, IO = 100 mA)

(T

J

−10.5 Vdc ≥ V

−11 Vdc ≥ V = +25°C, IO = 500 mA)

(T

J

−10.5 Vdc ≥ V

−11 Vdc ≥ V

Load Regulation, TJ = +25°C (Note 3)

5.0 mA ≤ I 250 mA ≤ I

Output Voltage

−10.5 Vdc ≥ V Input Bias Current (TJ = +25°C) I Input Bias Current Change

−10.5 Vdc ≥ V

5.0 mA ≤ I Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) V Ripple Rejection (IO = 20 mA, f = 120 Hz) RR − 62 − dB Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−V Average Temperature Coefficient of Output Voltage

= 5.0 mA, 0°C ≤ TJ ≤ +125°C

I

O

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.

≥ −25 Vdc

I

≥ −17 Vdc

I

≥ −25 Vdc

I

≥ −17 Vdc

I

≤ 1.5 A

O

≤ 750 mA

O

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

I

≥ −25 Vdc

I

≤ 1.5 A

O

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

Symbol Min Typ Max Unit

O

Reg

−5.75 −6.0 −6.25 Vdc

line

−

Reg

load

−

V

O

−5.7 − −6.3

IB

DI

IB

− 4.3 8.0 mA

−

n

O

− 45 −

− 1.3 − Vdc

DVO/DT

− −1.0 −

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

−7.7 −8.0 −8.3 Vdc

Reg

O

line

−

Reg

load

−

V

O

−7.6 − −8.4

IB

DI

IB

− 4.3 8.0 mA

−

n

O

− 52 −

− 1.3 − Vdc

DVO/DT

− −1.0 −

9.0

3.0

43 10

13

5.0

12

5.0

50 22

26

9.0

mV

60 30

120

60

mV

120

60

Vdc

mA

−

1.3

0.5 mV

mV/°C

mV

80 40

160

80

mV

160

80

Vdc

mA

−

1.0

0.5 mV

mV/°C

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4

MC7900 Series

MC7912B, MC7912C ELECTRICAL CHARACTERISTICS

Characteristics

Output Voltage (TJ = +25°C) V Line Regulation (Note 4)

= +25°C, IO = 100 mA)

(T

J

−14.5 Vdc ≥ V

−16 Vdc ≥ V = +25°C, IO = 500 mA)

(T

J

−14.5 Vdc ≥ V

−16 Vdc ≥ V

≥ −30 Vdc

I

≥ −22 Vdc

I

≥ −30 Vdc

I

≥ −22 Vdc

I

Load Regulation, TJ = +25°C (Note 4)

5.0 mA ≤ I 250 mA ≤ I

≤ 1.5 A

O

≤ 750 mA

O

Output Voltage

−14.5 Vdc ≥ V

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

I

Input Bias Current (TJ = +25°C) I Input Bias Current Change

−14.5 Vdc ≥ V

5.0 mA ≤ I

I

≤ 1.5 A

O

≥ −30 Vdc

Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) V Ripple Rejection (IO = 20 mA, f = 120 Hz) RR − 61 − dB Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−V Average Temperature Coefficient of Output Voltage

= 5.0 mA, Tlow* ≤ TJ ≤ +125°C

I

O

MC7912AC ELECTRICAL CHARACTERISTICS

Characteristics Symbol Min Typ Max Unit

Output Voltage (TJ = +25°C) V Line Regulation (Note 4)

−16 Vdc ≥ V

−14.8 Vdc ≥ V

−14.5 Vdc ≥ V

Load Regulation (Note 4)

5.0 mA ≤ I 250 mA ≤ I

5.0 mA ≤ I

Output Voltage

−14.8 Vdc ≥ V Input Bias Current I Input Bias Current Change

−15 Vdc ≥ V

5.0 mA ≤ I

5.0 mA ≤ I Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) V Ripple Rejection (IO = 20 mA, f = 120 Hz) RR − 61 − dB Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−V Average Temperature Coefficient of Output Voltage

= 5.0 A, Tlow* ≤ TJ ≤ +125°C

I

O

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.

≥ −22 Vdc; IO = 1.0 A, TJ = +25°C

I

≥ −22 Vdc; IO = 1.0 A

I

≥ −30 Vdc; IO = 500 mA

I

≥ −27 Vdc; IO = 1.0 A, TJ = +25°C

I

≤ 1.5 A, TJ = +25°C

O

≤ 750 mA

O

≤ 1.0 A

O

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

I

≥ −30 Vdc

I

≤ 1.0 A

O

≤ 1.5 A, TJ = +25°C

O

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

Symbol Min Typ Max Unit

−11.5 −12 −12.5 Vdc

−

13

6.0

55 24

46 17

Reg

O

line

load

V

O

−11.4 − −12.6

IB

DI

IB

− 4.4 8.0 mA

−

n

O

− 75 −

− 1.3 − Vdc

DVO/DT

− −1.0 −

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

−11.75 −12 −12.25 Vdc

line

load

−

6.0 24 24 13

46 17 35

Reg

O

V

O

−11.5 − −12.5

IB

DI

IB

− 4.4 8.0 mA

−

n

O

− 75 −

− 1.3 − Vdc

DVO/DT

− −1.0 −

mV

120

60

240 120

mV 240 120

Vdc

mA

−

1.0

0.5 mV

mV/°C

mV

60 120 120 120

mV

150

75 150

Vdc

mA

−

0.8

0.5

0.5 mV

mV/°C

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5

MC7900 Series

MC7915B, MC7915C ELECTRICAL CHARACTERISTICS

Characteristics

Output Voltage (TJ = +25°C) V Line Regulation (Note 5)

= +25°C, IO = 100 mA)

(T

J

−17.5 Vdc ≥ V

−20 Vdc ≥ V = +25°C, IO = 500 mA)

(T

J

−17.5 Vdc ≥ V

−20 Vdc ≥ V

≥ −30 Vdc

I

≥ −26 Vdc

I

≥ −30 Vdc

I

≥ −26 Vdc

I

Load Regulation, TJ = +25°C (Note 5)

5.0 mA ≤ I 250 mA ≤ I

≤ 1.5 A

O

≤ 750 mA

O

Output Voltage

−17.5 Vdc ≥ V

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

I

Input Bias Current (TJ = +25°C) I Input Bias Current Change

−17.5 Vdc ≥ V

5.0 mA ≤ I

I

≤ 1.5 A

O

≥ −30 Vdc

Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) V Ripple Rejection (IO = 20 mA, f = 120 Hz) RR − 60 − dB Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−V Average Temperature Coefficient of Output Voltage

= 5.0 A, Tlow* ≤ TJ ≤ +125°C

I

O

MC7915AC ELECTRICAL CHARACTERISTICS

Characteristics Symbol Min Typ Max Unit

Output Voltage (TJ = +25°C) V Line Regulation (Note 5)

−20 Vdc ≥ V

−17.9 Vdc ≥ V

−17.5 Vdc ≥ V

Load Regulation (Note 5)

5.0 mA ≤ I 250 mA ≤ I

5.0 mA ≤ I

Output Voltage

−17.9 Vdc ≥ V Input Bias Current I Input Bias Current Change

−17.5 Vdc ≥ V

5.0 mA ≤ I

5.0 mA ≤ I Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) V Ripple Rejection (IO = 20 mA, f = 120 Hz) RR − 60 − dB Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−V Average Temperature Coefficient of Output Voltage

= 5.0 mA, Tlow* ≤ TJ ≤ +125°C

I

O

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.

≥ −26 Vdc, IO = 1.0 A, TJ = +25°C

I

≥ −26 Vdc, IO = 1.0 A,

I

≥ −30 Vdc, IO = 500 mA

I

≥ −30 Vdc, IO = 1.0 A, TJ = +25°C

I

≤ 1.5 A, TJ = +25°C

O

≤ 750 mA

O

≤ 1.0 A

O

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

I

≥ −30 Vdc

I

≤ 1.0 A

O

≤ 1.5 A, TJ = +25°C

O

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

Symbol Min Typ Max Unit

−14.4 −15 −15.6 Vdc

line

−

14

6.0

57 27

68 25

Reg

O

load

V

O

−14.25 − −15.75

IB

DI

IB

− 4.4 8.0 mA

−

n

O

− 90 −

− 1.3 − Vdc

DVO/DT

− −1.0 −

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

−14.7 −15 −15.3 Vdc

line

−

27 57 57 57

68 25 40

Reg

O

load

V

O

−14.4 − −15.6

IB

DI

IB

− 4.4 8.0 mA

−

n

O

− 90 −

− 1.3 − Vdc

DVO/DT

− −1.0 −

mV

150

75

300 150

mV 300 150

Vdc

mA

−

1.0

0.5 mV

mV/°C

mV

75 150 150 150

mV

150

75 150

Vdc

mA

−

0.8

0.5

0.5 mV

mV/°C

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6

MC7900 Series

MC7918C ELECTRICAL CHARACTERISTICS

Characteristics

Output Voltage (TJ = +25°C) V Line Regulation (Note 6)

= +25°C, IO = 100 mA)

(T

J

−21 Vdc ≥ V

−24 Vdc ≥ V = +25°C, IO = 500 mA)

(T

J

−21 Vdc ≥ V

−24 Vdc ≥ V

≥ −33 Vdc

I

≥ −30 Vdc

I

≥ −33 Vdc

I

≥ −30 Vdc

I

Load Regulation, TJ = +25°C (Note 6)

5.0 mA ≤ I 250 mA ≤ I

≤ 1.5 A

O

≤ 750 mA

O

Output Voltage

−21 Vdc ≥ V

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

I

Input Bias Current (TJ = +25°C) I Input Bias Current Change

−21 Vdc ≥ V

5.0 mA ≤ I

≥ −33 Vdc

I

≤ 1.5 A

O

Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) V Ripple Rejection (IO = 20 mA, f = 120 Hz) RR − 59 − dB Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−V Average Temperature Coefficient of Output Voltage

= 5.0 mA, 0°C ≤ TJ ≤ +125°C

I

O

MC7924B, MC7924C ELECTRICAL CHARACTERISTICS

Characteristics Symbol Min Typ Max Unit

Output Voltage (TJ = +25°C) V Line Regulation (Note 6)

= +25°C, IO = 100 mA)

(T

J

−27 Vdc ≥ V

−30 Vdc ≥ V = +25°C, IO = 500 mA)

(T

J

−27 Vdc ≥ V

−30 Vdc ≥ V

Load Regulation, TJ = +25°C (Note 6)

5.0 mA ≤ I 250 mA ≤ I

Output Voltage

−27 Vdc ≥ V Input Bias Current (TJ = +25°C) I Input Bias Current Change

−27 Vdc ≥ V

5.0 mA ≤ I Output Noise Voltage (TA = +25°C, 10 Hz ≤ f ≤ 100 kHz) V Ripple Rejection (IO = 20 mA, f = 120 Hz) RR − 56 − dB Dropout Voltage (IO = 1.0 A, TJ = +25°C) VI−V Average Temperature Coefficient of Output Voltage

= 5.0 mA, Tlow* ≤ TJ ≤ +125°C

I

O

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.

≥ −38 Vdc

I

≥ −36 Vdc

I

≥ −38 Vdc

I

≥ −36 Vdc

I

≤ 1.5 A

O

≤ 750 mA

O

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

I

≥ −38 Vdc

I

≤ 1.5 A

O

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

Symbol Min Typ Max Unit

−17.3 −18 −18.7 Vdc

line

−

25 10

90 50

110

55

Reg

O

load

V

O

−17.1 − −18.9

IB

DI

IB

− 4.5 8.0 mA

−

n

O

− 110 −

− 1.3 − Vdc

DVO/DT

− −1.0 −

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

−23 −24 −25 Vdc

−

31 14

118

70

150

85

Reg

O

line

load

V

O

−22.8 − −25.2

IB

DI

IB

− 4.6 8.0 mA

−

n

O

− 170 −

− 1.3 − Vdc

DVO/DT

− −1.0 −

mV

180

90

360 180

mV 360 180

Vdc

mA

−

1.0

0.5 mV

mV/°C

mV

240 120

470 240

mV 480 240

Vdc

mA

−

1.0

0.5 mV

mV/°C

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7

MC7900 Series

20 10

q

= 5°C/W

HS

Infinite Heatsink

5.0

4.0

qHS = 15°C/W

3.0

2.0

No Heatsink

1.0

0.5

0.4

, POWER DISSIPATION (W)

0.3

D

q

= 5° C/W

JC

P

0.2 = 65° C/W

q

JA

P

(max) = 15W

D

0.1

25 50 75 100 125 150

T

, AMBIENT TEMPERATURE (°C)

A

Figure 2. Worst Case Power Dissipation as a

Function of Ambient Temperature

100

80

60

40

Vin = −11 V V

= −6.0 V

O

I

= 20 mA

O

2.5

2.0 TJ = +25°C

1.5

1.0

, OUTPUT CURRENT (A)

O

I

0.5

0

0 3.0 6.0 9.0 12 15 18 21 24 27 30

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

Figure 3. Peak Output Current as a Function

of Input−Output Differential Voltage

80

f = 120 Hz I

70

60

= 20 mA

O

= 1.0 V(RMS)

DV

in

RR, RIPPLE REJECTION (dB)

20

0

10 100 1.0 k 10 k 100 k

f, FREQUENCY (Hz)

Figure 4. Ripple Rejection as a

Function of Frequency

6.26

6.22

6.18

6.14

, OUTPUT VOLTAGE (−V)

O

V

6.10

6.06

−25 0 25 50 75 100 125 150 175

T

, JUNCTION TEMPERATURE (°C)

J

Vin = −11 V V

= −6.0 V

D

I

= 20 mA

O

Figure 6. Output Voltage as a Function

of Junction Temperature

50

RR, RIPPLE REJECTION (dB)

40

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

, OUTPUT VOLTAGE (V)

O

Figure 5. Ripple Rejection as a Function

of Output Voltage

5.2

5.0

4.8

4.6

, INPUT BIAS CURRENT (mA)

4.4

IB

I

4.2 0 25 50 75 100 125

Vin = −11 V VO = −6.0 V I

= 20 mA

O

TJ, JUNCTION TEMPERATURE (°C)

Figure 7. Quiescent Current as a

Function of Temperature

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8

MC7900 Series

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.

−20 V Input

Gnd Gnd

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.

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.

1.0 mF

+

MC7905

=

I

O

5.0 V

R

+ I

10

1.0 mF

+

B

Figure 8. Current Regulator

I

= 200 mA

O

−

R

V

≤ 10 V

O

−10 V

Input

10 mF

Gnd Gnd

*Mounted on heatsink.

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/RSC. 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.

MJE200* or Equiv

+

0.56

5.6

2N3055* or Equiv

MC7905*

1.0 mF

+ +

−5.0 V Output

1.0 mF

Figure 9. Current Boost Regulator

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

+20 V

Input

0.33 mF

Gnd

−20 V Input

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.

+

1.0 mF

+

1.0 mF

MC7815

MC7915

1.0 mF

+

+15 V Output

1N4001 or Equiv

Gnd

−15 V Output

Figure 10. Operational Amplifier Supply

(±15 @ 1.0 A)

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9

MC7900 Series

ÎÎÎ

80

JAθ

R , THERMAL RESISTANCE

70

60

50

JUNCTION-TO-AIR ( C/W)°

40

30

Free Air Mounted

Vertically

Minimum Size Pad

010203025155.0

L, LENGTH OF COPPER (mm)

Figure 11. D2P AK Thermal Resistance and Maximum

Power Dissipation versus P.C.B. Copper Length

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.

P

D(max)

R

q

JA

for TA = +50°C

2.0 oz. Copper L

L

3.5

3.0

2.5

2.0

1.5

1.0

, MAXIMUM POWER DISSIPATION (W)

D

P

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.

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10

MC7900 Series

ORDERING INFORMATION

Nominal

Device

MC7905ACD2T MC7905ACD2TG D2PAK

MC7905ACD2TR4 D2PAK 800 Tape & Reel MC7905ACD2TR4G D2PAK

MC7905ACT TO−220 50 Units/Rail MC7905ACTG TO−220

MC7905BD2T MC7905BD2TG D2PAK

MC7905BD2TR4 D2PAK 800 Tape & Reel MC7905BD2TR4G D2PAK

MC7905BT TO−220 50 Units/Rail MC7905BTG TO−220

MC7905CD2T D2PAK MC7905CD2TG D2PAK

MC7905CD2TR4 D2PAK 800 Tape & Reel MC7905CD2TR4G D2PAK

MC7905CT TO−220 50 Units/Rail MC7905CTG TO−220

MC7905.2CT MC7905.2CTG TO−220

MC7906CD2T MC7906CD2TG D2PAK

MC7906CT TO−220 50 Units/Rail MC7906CTG TO−220

MC7908ACT MC7908ACTG TO−220

MC7908CD2T MC7908CD2TG D2PAK

MC7908CD2TR4 D2PAK 800 Tape & Reel MC7908CD2TR4G D2PAK

MC7908CT TO−220 50 Units/Rail MC7908CTG TO−220

Output Voltage

−5.0 V 2%

−5.2 V 4%

−6.0 V 4%

−8.0 V 2%

Output Voltage

Tolerance

4%

Operating

Package

D2PAK

(Pb−Free)

D2PAK

(Pb−Free)

TO−220

(Pb−Free)

D2PAK

(Pb−Free)

TO−220

(Pb−Free)

D2PAK 50 Units/Rail

(Pb−Free)

Temperature Range

TJ = 0°C to +125°C

TJ = −40°C to +125°C

TJ = 0°C to +125°C

Shipping

50 Units/Rail 50 Units/Rail

800 Tape & Reel

50 Units/Rail

50 Units/Rail 50 Units/Rail

800 Tape & Reel

50 Units/Rail

50 Units/Rail 50 Units/Rail

800 Tape & Reel

50 Units/Rail

50 Units/Rail 50 Units/Rail

50 Units/Rail

50 Units/Rail 50 Units/Rail

50 Units/Rail

800 Tape & Reel

50 Units/Rail

†

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11

MC7900 Series

Nominal

Device Shipping

MC7912ACD2T MC7912ACD2TG D2PAK

MC7912ACD2TR4 D2PAK 800 Tape & Reel MC7912ACD2TR4G D2PAK

MC7912ACT TO−220 50 Units/Rail MC7912ACTG TO−220

MC7912BD2T MC7912BD2TG D2PAK

MC7912BD2TR4 D2PAK 800 Tape & Reel MC7912BD2TR4G D2PAK

MC7912BT TO−220 50 Units/Rail MC7912BTG TO−220

MC7912CD2T D2PAK MC7912CD2TG D2PAK

MC7912CD2TR4 D2PAK 800 Tape & Reel MC7912CD2TR4G D2PAK

MC7912CT TO−220 50 Units/Rail MC7912CTG TO−220

MC7915ACD2T MC7915ACD2TG D2PAK

MC7915ACT TO−220 50 Units/Rail MC7915ACTG TO−220

MC7915BD2T MC7915BD2TG D2PAK

MC7915BT TO−220 50 Units/Rail MC7915BTG TO−220

MC7915CD2T D2PAK MC7915CD2TG D2PAK

MC7915CD2TR4 D2PAK 800 Tape & Reel MC7915CD2TR4G D2PAK

MC7915CT TO−220 50 Units/Rail MC7915CTG TO−220

Output Voltage

−12 V 2%

− 15 V 2%

Output Voltage

Tolerance

4%

Package

D2PAK

(Pb−Free)

D2PAK

(Pb−Free)

D2PAK

(Pb−Free)

D2PAK

(Pb−Free)

Operating

Temperature Range

TJ = 0°C to +125°C

TJ = −40°C to +125°C

TJ = 0°C to +125°C

TJ = −40°C to +125°C

TJ = 0°C to +125°C

†

50 Units/Rail 50 Units/Rail

800 Tape & Reel

50 Units/Rail

50 Units/Rail 50 Units/Rail

800 Tape & Reel

50 Units/Rail

50 Units/Rail 50 Units/Rail

800 Tape & Reel

50 Units/Rail

50 Units/Rail 50 Units/Rail

50 Units/Rail

50 Units/Rail 50 Units/Rail

50 Units/Rail

50 Units/Rail 50 Units/Rail

800 Tape & Reel

50 Units/Rail

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12

MC7900 Series

Nominal

Device Shipping

MC7918CT MC7918CTG TO−220

MC7924BT MC7924BTG TO−220

MC7924CD2T D2PAK MC7924CD2TG D2PAK

MC7924CT TO−220 50 Units/Rail MC7924CTG TO−220

†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.

Output Voltage

− 18 V 4%

− 24 V 4%

Output Voltage

Tolerance

Package

TO−220

(Pb−Free)

TO−220

(Pb−Free)

Operating

Temperature Range

TJ = 0°C to +125°C

TJ = −40°C to +125°C

TJ = 0°C to +125°C

†

50 Units/Rail 50 Units/Rail

50 Units/Rail

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13

MC7900 Series

MARKING DIAGRAMS

TO−220

T SUFFIX

CASE 221AB

MC

79xxACT

AWLYWWG

1

23 1

MC 79xxACD2T AWLYWWG

2

1

3

MC

7905.2CT

AWLYWWG

23 1

D

D2T SUFFIX

CASE 936

79xxBD2T

AWLYWWG

1

2

PAK

MC

2

MC

79xxBT

AWLYWWG

23 1

3

AWLYWWG

MC

79xxCD2T

AWLYWWG

2

1

3

MC

79xxCT

23

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

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14

D2PAK

K

B

F

J

D

0.010 (0.254) T

M

C

A

12 3

G

OPTIONAL CHAMFER

S

H

MC7900 Series

PACKAGE DIMENSIONS

D2T SUFFIX

PLASTIC PACKAGE

CASE 936−03

ISSUE B

−T− E

M

N

R

SOLDERING FOOTPRINT*

8.38

0.33

TERMINAL 4

V

L

P

NOTES:

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

2. CONTROLLING DIMENSION: INCH.

3. TAB CONTOUR OPTIONAL WITHIN DIMENSIONS A AND K.

U

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.

INCHES

DIMAMIN MAX MIN MAX

0.386 0.403 9.804 10.236

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

MILLIMETERS

5 REF5 REF

10.66

0.42

1.016

0.04

3.05

0.12

17.02

0.67

SCALE 3:1

D2PAK−3

ǒ

inches

mm

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

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

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15

5.08

0.20

Ǔ

MC7900 Series

PACKAGE DIMENSIONS

TO−220, SINGLE GAUGE

T SUFFIX

CASE 221AB−01

ISSUE O

NOTES:

1. DIMENSIONING AND TOLERANCING PER ANSI

SEATING

−T−

PLANE

B

4

Q

123

F

T

A

U

C

S

H

K

Z

L

V

R J

G

D

N

Y14.5M, 1982.

2. CONTROLLING DIMENSION: INCH.

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

DIM MIN MAX MIN MAX

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 0.055 0.508 1.39

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

MILLIMETERSINCHES

ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). 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

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

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USA/Canada

Europe, Middle East and Africa Technical Support:

Phone: 421 33 790 2910

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Phone: 81−3−5773−3850

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For additional information, please contact your local Sales Representative

MC7900/D

16

Datasheet MC 7905 CTG Datasheet

Specifications and Main Features

Frequently Asked Questions

User Manual