L7900 - DATASHEET PDF

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L7900 SERIES NEGATIVE VOLTAGE REGULATORS OUTPUT CURRENT UP TO 1.5 A OUTPUT VOLTAGES OF -5; -5.2; -6; -8; -9; -12; -15; -18; -20; -22; -24V THERMAL OVERLOAD PROTECTION SHORT CIRCUIT PROTECTION OUTPUT TRANSITION SOA PROTECTION DESCRIPTION The L7900 series of three-terminal negative regulators is available in TO-220, ISOWATT220 TO-3 and D2PAK packages and several fixed output voltages, making it useful in a wide range of applications.These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation; furthermore, having the same voltage option as the L7800 positive standard series, they are particularly suited for split power supplies. In addition, the -5.2V is also available for ECL system. If adequate heat sinking is provided, they can deliver over 1.5A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents.

1

3

2 TO-3

1

D2PAK

1

TO-220

2

3

ISOWATT220

SCHEMATIC DIAGRAM

November 1999

1/13

L7900 ABSOLUTE MAXIMUM RATINGS Symbol

Parameter

Vi

DC Input Voltage (for VO = 5 to 18V) (for V O = 20, 24V)

Io

Value

Unit

-35 -40

V V

Output Current

Internally limited

P t ot

Power Dissipation

Internally limited

T op

Operating Junction Temperature Range

T st g

Storage Temperature Range

0 to 150

o

- 65 to 150

o

C C

THERMAL DATA Symbol

Parameter

R t hj- ca se Thermal Resistance Junction-case Max R t hj- a m b Thermal Resistance Junction-ambient Max

D2PAK

TO-220

ISOWATT220

TO-3

3 62.5

3 50

4 60

4 35

Unit o o

C/W C/W

CONNECTION DIAGRAM AND ORDERING NUMBERS (top view)

D2PAK

TO-220 & ISOWATT 220

Type L7905C L7952C L7906C L7908C L7912C L7915C L7918C L7920C L7922C L7924C

TO-220 L7905CV L7952CV L7906CV L7908CV L7912CV L7915CV L7918CV L7920CV L7922CV L7924CV

D2PAK (*) L7905CD2T L7952CD2T L7906CD2T L7908CD2T L7912CD2T L7915CD2T L7918CD2T L7920CD2T L7922CD2T L7924CD2T

(*) AVAILABLE IN TAPE AND REEL WITH ”-TR” SUFFIX

APPLICATION CIRCUIT

2/13

ISOWATT220 L7905CP L7906CP L7908CP L7912CP L7915CP L7918CP L7920CP L7924CP

TO-3

TO-3 L7905CT L7952CT L7906CT L7908CT L7912CT L7915CT L7918CT L7920CT L7922CT L7924CT

Output Voltage -5V - 5.2V -6V -8V -12V -15V -18V -20V -22V -24V

L7900 ELECTRICAL CHARACTERISTICS FOR L7905C (refer to the test circuits, T j = 0 to 150 oC, Vi = -10V, Io = 500 mA, Ci = 2.2 F, Co = 1 F unless otherwise specified) Symbol

Parameter

Test Conditions o

Min.

Typ.

Max.

Unit

- 4.8 -4.75

-5

- 5.2

V

-5

-5.25

V

Vo

Output Voltage

Tj = 25 C

Vo

Output Voltage

Io = -5 mA to -1 A Vi = 8 to 20 V

Vo *

Line Regulation

Vi = -7 to -25 V T j = 25 oC Vi = -8 to -12 V Tj = 25 oC

100 50

mV mV

Vo *

Load Regulation

Io = 5 to 1500 mA Tj = 25 o C I o = 250 to 750 mA Tj = 25 oC

100 50

mV mV

Id

Quiescent Current

Tj = 25 o C

Quiescent Current Change

Io = 5 to 1000 mA

Id

Quiescent Current Change

Vi = -8 to -25 V

Vo T

Output Voltage Drift

Io = 5 mA

Output Noise Voltage Supply Voltage Rejection

B = 10Hz to 100KHz Tj = 25 oC Vi = 10 V f = 120 Hz

Vd

Dropout Voltage

Io = 1 A Tj = 25 o C VO = 100 mV

Is c

Short Circuit Current

Id

eN SVR

I sc p

Short Circuit Peak Current

Po

15 W

3

mA

0.5

mA

1.3

54

o

T j = 25 C

mA

-0.4

mV/ oC

100 60

V dB

1.4

V

2.1

A

2.5

A

ELECTRICAL CHARACTERISTICS FOR L7952C (refer to the test circuits, T j = 0 to 150 oC, Vi = -10V, Io = 500 mA, Ci = 2.2 F, Co = 1 F unless otherwise specified) Symbol

Parameter

Test Conditions o

Min.

Typ.

Max.

Unit

Vo

Output Voltage

Tj = 25 C

-5.0

-5. 2

-5.4

V

Vo

Output Voltage

-4.95

-5.2

-5.45

V

Vo *

Line Regulation

Io = -5 mA to -1 A P o 15 W Vi = -9 to -21 V Vi = -8 to -25 V T j = 25 oC Vi = -9 to -12 V Tj = 25 oC

105 52

mV mV

Vo *

Load Regulation

Io = 5 to 1500 mA Tj = 25 o C I o = 250 to 750 mA Tj = 25 oC

105 52

mV mV

Id

Quiescent Current

Tj = 25 o C

Quiescent Current Change

Io = 5 to 1000 mA

Id

Quiescent Current Change

Vi = -9 to -25 V

Vo T

Output Voltage Drift

Io = 5 mA

Output Noise Voltage Supply Voltage Rejection

B = 10Hz to 100KHz Tj = 25 oC Vi = 10 V f = 120 Hz

Dropout Voltage

Id

eN SVR Vd Is c

Short Circuit Current

I sc p

Short Circuit Peak Current

3

mA

0.5

mA

1.3 -0.5 125 54

mA mV/ oC V

60

dB

Io = 1 A Tj = 25 o C V O = 100 mV

1.4

V

2

A

T j = 25 o C

2.5

A

* Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately. Pulce testing with low duty cycle is used.

3/13

L7900 ELECTRICAL CHARACTERISTICS FOR L7906C (refer to the test circuits, T j = 0 to 150 oC, Vi = -11V, Io = 500 mA, Ci = 2.2 F, Co = 1 F unless otherwise specified) Symbol

Parameter

Test Conditions o

Min.

Typ.

Max.

Unit

-5.75

-6

-6.25

V

- 5.7

-6

- 6.3

V

Vo

Output Voltage

Tj = 25 C

Vo

Output Voltage

Io = -5 mA to -1 A P o Vi = -9.5 to -21.5 V

Vo *

Line Regulation

Vi = -8.5 to -25 V Tj = 25 o C Vi = -9 to -15 V Tj = 25 oC

120 60

mV mV

Vo *

Load Regulation

Io = 5 to 1500 mA Tj = 25 o C I o = 250 to 750 mA Tj = 25 oC

120 60

mV mV

Id

Quiescent Current

Tj = 25 o C

Quiescent Current Change

Io = 5 to 1000 mA

Id

Quiescent Current Change

Vi = -9.5 to -25 V

Vo T

Output Voltage Drift

Io = 5 mA

Output Noise Voltage Supply Voltage Rejection

B = 10Hz to 100KHz Tj = 25 oC Vi = 10 V f = 120 Hz

Vd

Dropout Voltage

Io = 1 A Tj = 25 o C VO = 100 mV

Is c

Short Circuit Current

Id

eN SVR

I sc p

Short Circuit Peak Current

15 W

3

mA

0.5

mA

1.3

54

o

T j = 25 C

mA

-0.6

mV/ oC

144 60

V dB

1.4

V

2

A

2.5

A

ELECTRICAL CHARACTERISTICS FOR L7908C (refer to the test circuits, T j = 0 to 150 oC, Vi = -14V, Io = 500 mA, Ci = 2.2 F, Co = 1 F unless otherwise specified) Symbol

Parameter

Test Conditions o

Min.

Typ.

Max.

Unit

- 7.7

-8

- 8.3

V

- 7.6

-8

- 8.4

V

Vo

Output Voltage

Tj = 25 C

Vo

Output Voltage

Io = -5 mA to -1 A P o Vi = -11.5 to -23 V

Vo *

Line Regulation

Vi = -10.5 to -25 V T j = 25 o C Vi = -11 to -17 V Tj = 25 oC

160 80

mV mV

Vo *

Load Regulation

Io = 5 to 1500 mA Tj = 25 o C I o = 250 to 750 mA Tj = 25 oC

160 80

mV mV

Id

Quiescent Current

Tj = 25 o C

Quiescent Current Change

Io = 5 to 1000 mA

Id

Quiescent Current Change

Vi = -11.5 to -25 V

Vo T

Output Voltage Drift

Io = 5 mA

Output Noise Voltage Supply Voltage Rejection

B = 10Hz to 100KHz Tj = 25 oC Vi = 10 V f = 120 Hz

Dropout Voltage

Io = 1 A Tj = 25 o C V O = 100 mV

Id

eN SVR Vd Is c

Short Circuit Current

I sc p

Short Circuit Peak Current

T j = 25 o C

15 W

3

mA

0.5

mA

1.3 -0.6 175 54

mA mV/ oC V

60

dB

1.1

V

1.5

A

2.5

A

* Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately. Pulce testing with low duty cycle is used.

4/13

L7900 ELECTRICAL CHARACTERISTICS FOR L7912C (refer to the test circuits, T j = 0 to 150 oC, Vi = -19V, Io = 500 mA, Ci = 2.2 F, Co = 1 F unless otherwise specified) Symbol

Parameter

Test Conditions o

Min.

Typ.

Max.

Unit

-11.5

-12

-12.5

V

-11.4

-12

-12.6

V

Vo

Output Voltage

Tj = 25 C

Vo

Output Voltage

Io = -5 mA to -1 A P o Vi = -15.5 to -27 V

Vo *

Line Regulation

Vi = -14.5 to -30 V T j = 25 o C Vi = -16 to -22 V Tj = 25 oC

240 120

mV mV

Vo *

Load Regulation

Io = 5 to 1500 mA Tj = 25 o C I o = 250 to 750 mA Tj = 25 oC

240 120

mV mV

Id

Quiescent Current

Tj = 25 o C

Quiescent Current Change

Io = 5 to 1000 mA

Id

Quiescent Current Change

Vi = -15 to -30 V

Vo T

Output Voltage Drift

Io = 5 mA

Output Noise Voltage Supply Voltage Rejection

B = 10Hz to 100KHz Tj = 25 oC Vi = 10 V f = 120 Hz

Vd

Dropout Voltage

Io = 1 A Tj = 25 o C VO = 100 mV

Is c

Short Circuit Current

Id

eN SVR

I sc p

Short Circuit Peak Current

15 W

3

mA

0.5

mA

1

54

o

T j = 25 C

mA

-0.8

mV/ oC

200 60

V dB

1.1

V

1.5

A

2.5

A

ELECTRICAL CHARACTERISTICS FOR L7915C (refer to the test circuits, T j = 0 to 150 oC, Vi = -23V, Io = 500 mA, Ci = 2.2 F, Co = 1 F unless otherwise specified) Symbol

Parameter

Test Conditions o

Min.

Typ.

Max.

Unit

-14.4

-15

-15.6

V

-14.3

-15

-15.7

V

Vo

Output Voltage

Tj = 25 C

Vo

Output Voltage

Io = -5 mA to -1 A P o Vi = -18.5 to -30 V

Vo *

Line Regulation

Vi = -17.5 to -30 V T j = 25 o C Vi = -20 to -26 V Tj = 25 oC

300 150

mV mV

Vo *

Load Regulation

Io = 5 to 1500 mA Tj = 25 o C I o = 250 to 750 mA Tj = 25 oC

300 150

mV mV

Id

Quiescent Current

Tj = 25 o C

Quiescent Current Change

Io = 5 to 1000 mA

Id

Quiescent Current Change

Vi = -18.5 to -30 V

Vo T

Output Voltage Drift

Io = 5 mA

Output Noise Voltage Supply Voltage Rejection

B = 10Hz to 100KHz Tj = 25 oC Vi = 10 V f = 120 Hz

Dropout Voltage

Io = 1 A Tj = 25 o C V O = 100 mV

Id

eN SVR Vd Is c

Short Circuit Current

I sc p

Short Circuit Peak Current

T j = 25 o C

15 W

3

mA

0.5

mA

1 -0.9 250 54

mA mV/ oC V

60

dB

1.1

V

1.3

A

2.2

A

* Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately. Pulce testing with low duty cycle is used.

5/13

L7900 ELECTRICAL CHARACTERISTICS FOR L7918C (refer to the test circuits, T j = 0 to 150 oC, Vi = -27V, Io = 500 mA, Ci = 2.2 F, Co = 1 F unless otherwise specified) Symbol

Parameter

Test Conditions o

Min.

Typ.

Max.

Unit

-17.3

-18

-18.7

V

-17.1

-18

-18.9

V

Vo

Output Voltage

Tj = 25 C

Vo

Output Voltage

Io = -5 mA to -1 A Vi = -22 to -33 V

Vo *

Line Regulation

Vi = -21 to -33 V Tj = 25 o C Vi = -24 to -30 V Tj = 25 oC

360 180

mV mV

Vo *

Load Regulation

Io = 5 to 1500 mA Tj = 25 o C I o = 250 to 750 mA Tj = 25 oC

360 180

mV mV

Id

Quiescent Current

Tj = 25 o C

Quiescent Current Change

Io = 5 to 1000 mA

Id

Quiescent Current Change

Vi = -22 to -33 V

Vo T

Output Voltage Drift

Io = 5 mA

Output Noise Voltage Supply Voltage Rejection

B = 10Hz to 100KHz Tj = 25 oC Vi = 10 V f = 120 Hz

Vd

Dropout Voltage

Io = 1 A Tj = 25 o C VO = 100 mV

Is c

Short Circuit Current

Id

eN SVR

I sc p

Short Circuit Peak Current

Po

15 W

3

mA

0.5

mA

1

54

o

T j = 25 C

mA

-1

mV/ oC

300 60

V dB

1.1

V

1.1

A

2.2

A

ELECTRICAL CHARACTERISTICS FOR L7920C (refer to the test circuits, T j = 0 to 150 oC, Vi = -29V, Io = 500 mA, Ci = 2.2 F, Co = 1 F unless otherwise specified) Symbol

Parameter

Test Conditions o

Min.

Typ.

Max.

Unit

-19.2

-20

-20.8

V

- 19

-20

- 21

V

Vo

Output Voltage

Tj = 25 C

Vo

Output Voltage

Io = -5 mA to -1 A Vi = -24 to -35 V

Vo *

Line Regulation

Vi = -23 to -35 V Tj = 25 o C Vi = -26 to -32 V Tj = 25 oC

400 200

mV mV

Vo *

Load Regulation

Io = 5 to 1500 mA Tj = 25 o C I o = 250 to 750 mA Tj = 25 oC

400 200

mV mV

Id

Quiescent Current

Tj = 25 o C

Quiescent Current Change

Io = 5 to 1000 mA

Id

Quiescent Current Change

Vi = -24 to -35 V

Vo T

Output Voltage Drift

Io = 5 mA

Output Noise Voltage Supply Voltage Rejection

B = 10Hz to 100KHz Tj = 25 oC Vi = 10 V f = 120 Hz

Dropout Voltage

Io = 1 A Tj = 25 o C V O = 100 mV

Id

eN SVR Vd Is c

Short Circuit Current

I sc p

Short Circuit Peak Current

T j = 25 o C

Po

15 W

3

mA

0.5

mA

1 -1.1 350 54

mA mV/ oC V

60

dB

1.1

V

0.9

A

2.5

A

* Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken into account separately. Pulce testing with low duty cycle is used.

6/13

L7900 ELECTRICAL CHARACTERISTICS FOR L7922C (refer to the test circuits, T j = 0 to 150 oC, Vi = -31V, Io = 500 mA, Ci = 2.2 F, Co = 1 F unless otherwise specified) Symbol

Parameter

Test Conditions o

Min.

Typ.

Max.

Unit

-21.1

-22

-22.9

V

-20.9

-22

-23.1

V

Vo

Output Voltage

Tj = 25 C

Vo

Output Voltage

Io = -5 mA to -1 A Vi = -26 to -37 V

Vo *

Line Regulation

Vi = -25 to -37 V Tj = 25 o C Vi = -28 to -34 V Tj = 25 oC

440 220

mV mV

Vo *

Load Regulation

Io = 5 to 1500 mA Tj = 25 o C I o = 250 to 750 mA Tj = 25 oC

440 220

mV mV

Id

Quiescent Current

Tj = 25 o C

Quiescent Current Change

Io = 5 to 1000 mA

Id

Quiescent Current Change

Vi = -26 to -37 V

Vo T

Output Voltage Drift

Io = 5 mA

Output Noise Voltage Supply Voltage Rejection

B = 10Hz to 100KHz Tj = 25 oC...