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1

Overview

   The AN7900T/AN7900F series is 3-pin fixed negative

output type monolithic voltage regulators.

A stabilized fixed negative output voltage is obtained from

an unstable DC input voltage without using any external

parts. Eleven types of fixed output voltage are available

from –5V through –10V, –12V, –15V, –18V, –20V, and

–24V. They can be used widely as power circuits with a

current capacitance of up to 1A.

s

 Features

• No external components

• Output voltage : –5V,  –6V,  –7V,  –8V,  –9V,  –10V,

  –12V, –15V, –18V, –20V, –24V

• Overcurrent  limit circuit built-in

• Thermal over-load protection built-in

• Area of safe operation (ASO) circuit built-in

AN7900T/AN7900F Series

3-pin Negative Output Voltage Regulators (1A Type)

Block Diagram

1

3

2

Common

Output

Input

Starter

Voltage

Reference

Error Amp.

+

R

1

Q

1

Pass Tr.

 

R

SC

Current

Limiter

Thermal

Protection

R

2

Unit : mm

AN7900F Series

16.7

±

0.3

17.0

±

0.25

4.2

±

0.25

3.8

±

0.25

8.7

±

0.3

13.6

±

0.25

4.5

±

0.25

1.4

±

0.2

TO-220 Full Pack Package (HSIP003-P-0000A)

10.5

±

0.3

2.77

±

0.3

(1.73)

1

2

3

ø5.3

ø3.1

±

0.1

(4.3)

2.5

±

0.25

4.5

±

0.3

1 : Common

2 : Input

3 : Output

2.0

±

0.25

0.8

±

0.2

(0.4)

2.54

0.4

+ 0. 1

– 0.05

Unit : mm

AN7900T Series

10.4

±

0.5

1.4

±

0.1

2.9

±

0.1

6.7

±

0.25

8.7

±

0.3

13.6

±

0.25

1.4

±

0.25

4.5

ø3.7

10.5

±

0.5

2.54

0.45

1 : Common

2 : Input

3 : Output

2.5

±

0.25

+ 0. 1

– 0.05

1

2

3

4.5

±

0.3

JEDEC: TO-220AB (HSIP003-P-0000)

0.8

±

0.2

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2

V

I

P

D

T

opr

T

stg

V

V

W

˚C

˚C

–35 *

1

–40 *

2

15 *

3

10.25 *

3

–30 to +80

–55 to +150

Input voltage

Power dissipation

Operating ambient temperature

Storage temperature

AN7900T Series

AN7900F Series

*1   AN7905T/F, AN7906T/F, AN7907T/F, AN7908T/F, AN7909T/F, AN7910T/F, AN7912T/F, AN7915T/F, AN7918T/F

*2   AN7920T/F, AN7924T/F

*3   Follow the derating curve. When T

 exceeds 150˚C, the internal circuit shuts off the output.

Parameter

Symbol

Rating

Unit

Absolute Maximum Ratings

 (Ta

=

25˚C)

typ

Output voltage

V

O

–5.2

V

–5

Output voltage tolerance

V

O

V

V

I

=

–7 to –20V, 

I

O

=

5mA to 1A, P

D    

*

Line regulation

REG

IN

100

mV

3

V

I

=

–7 to –25V, T

j

=

25˚C

mV

Load regulation

REG

L

mV

10

I

O

=

5mA to 1.5A, T

j

=

25˚C

mV

I

O

=

250 to 750mA, T

j

=

25˚C

V

I

=

–8 to –12V, T

j

=

25˚C

mA

2

T

j

=

25˚C

1

Bias current

I

bias

mA

V

I

=

–7 to –25V, T

j

=

25˚C

Input bias fluctuation

mA

Load bias current fluctuation

µ

V

40

I

O

=

5mA to 1A, T

j

=

25˚C

Output noise voltage

V

no

dB

f

=

10Hz to 100kHz, Ta

=

25˚C

1.3

0.5

50

–5.25

100

50

4

62

–4.8

–4.75

Ripple rejection ratio

RR

V

I

=

–8 to –18V, I

O

=

100mA, f

=

120Hz

V

1.1

I

O

=

1A, T

j

=

25˚C

Minimum i/o voltage difference

A

2.1

3

74

Peak output current

– 0.4

Output voltage temperature coefficient

Parameter

Symbol

Condition

min

max

Unit

T

j

=

25˚C

I

O

=

5mA, T

j

=

0 to 125˚C

T

j

=

25˚C

I

bias (IN)

I

bias (L)

V

DIF (min.)

I

O (Peak)

mV/˚C

V

O

/Ta

Note 1)  The specified condition T

j

=

25˚C means that the test should be carried out with the test time so short (within 10ms) that the

               drift in characteristic value due to the rise in chip junction temperature can be ignored.

Note 2)  Unless otherwise specified, V

I

=

–10V, I

O

=

500mA, C

I

=

2

µ

F, C

O

=

1

µ

F, T

j

=

0 to 125˚C 

* AN7900T series : 15W, AN7900F series : 10.25W

Electrical Characteristics

 (Ta

=

25˚C)

 • AN7905T/AN7905F (–5V Type)

<

=

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3

V

O

–6.25

V

–6

V

O

V

REG

IN

120

mV

4

mV

REG

L

mV

10

mV

mA

2

1.5

I

bias

mA

mA

44

V

no

dB

1.3

0.5

60

–6.3

120

60

4

60

–5.75

–5.7

RR

V

1.1

A

2.1

3

73

– 0.5

typ

Output voltage

Output voltage tolerance

Line regulation

Load regulation

Bias current

Input bias fluctuation

Load bias current fluctuation

Output noise voltage

Ripple rejection ratio

Minimum i/o voltage difference

Peak output current

Output voltage temperature coefficient

Parameter

Symbol

Condition

min

max

Unit

V

I

=

–8 to –21V, 

I

O

=

5mA to 1A, P

D    

*

V

I

=

–8 to –25V, T

j

=

25˚C

I

O

=

5mA to 1.5A, T

j

=

25˚C

I

O

=

250 to 750mA, T

j

=

25˚C

V

I

=

–9 to –13V, T

j

=

25˚C

T

j

=

25˚C

V

I

=

–8 to –25V, T

j

=

25˚C

µ

V

I

O

=

5mA to 1A, T

j

=

25˚C

f

=

10Hz to 100kHz, Ta

=

25˚C

V

I

=

–9 to –19V, I

O

=

100mA, f

=

120Hz

I

O

=

1A, T

j

=

25˚C

T

j

=

25˚C

I

O

=

5mA, T

j

=

0 to 125˚C

T

j

=

25˚C

I

bias (IN)

I

bias (L)

V

DIF (min.)

I

O (Peak)

mV/˚C

V

O

/Ta

Note 1)  The specified condition T

j

=

25˚C means that the test should be carried out with the test time so short (within 10ms) that the

               drift in characteristic value due to the rise in chip junction temperature can be ignored.

Note 2)  Unless otherwise specified, V

I

=

–11V, I

O

=

500mA, C

I

=

2

µ

F, C

O

=

1

µ

F, T

j

=

0 to 125˚C 

* AN7900T series : 15W, AN7900F series : 10.25W

Electrical Characteristics

 (Ta

=

25˚C) (continued)

 • AN7906T/AN7906F (–6V Type)

<

=

V

O

–7.3

V

–7

V

O

V

REG

IN

140

mV

5

mV

REG

L

mV

12

mV

mA

2

1.5

I

bias

mA

mA

48

V

no

dB

1.3

0.5

70

–7.35

140

70

4

58

–6.7

–6.65

RR

V

1.1

A

2.1

4

72

– 0.5

typ

Output voltage

Output voltage tolerance

Line regulation

Load regulation

Bias current

Input bias fluctuation

Load bias current fluctuation

Output noise voltage

Ripple rejection ratio

Minimum input/output voltage difference

Peak output current

Output voltage temperature coefficient

Parameter

Symbol

Condition

min

max

Unit

V

I

=

–79 to –22V, 

I

O

=

5mA to 1A, P

D    

*

V

I

=

–9 to –25V, T

j

=

25˚C

I

O

=

5mA to 1.5A, T

j

=

25˚C

I

O

=

250 to 750mA, T

j

=

25˚C

V

I

=

–10 to –14V, T

j

=

25˚C

T

j

=

25˚C

V

I

=

–9 to –25V, T

j

=

25˚C

µ

V

I

O

=

5mA to 1A, T

j

=

25˚C

f

=

10Hz to 100kHz, Ta

=

25˚C

V

I

=

–10 to –20V, I

O

=

100mA, f

=

120Hz

I

O

=

1A, T

j

=

25˚C

T

j

=

25˚C

I

O

=

5mA, T

j

=

0 to 125˚C

T

j

=

25˚C

I

bias (IN)

I

bias (L)

V

DIF (min.)

I

O (Peak)

mV/˚C

V

O

/Ta

Note 1)  The specified condition T

j

=

25˚C means that the test should be carried out with the test time so short (within 10ms) that the

               drift in characteristic value due to the rise in chip junction temperature can be ignored.

Note 2)  Unless otherwise specified, V

I

=

–12V, I

O

=

500mA, C

I

=

2

µ

F, C

O

=

1

µ

F, T

j

=

0 to 125˚C 

* AN7900T series : 15W, AN7900F series : 10.25W

 • AN7907T/AN7907F (–7V Type)

<

=

background image

4

V

O

–8.3

V

–8

V

O

V

REG

IN

160

mV

6

mV

REG

L

mV

12

mV

mA

2.2

2

I

bias

mA

mA

52

V

no

dB

1

0.5

80

–8.4

160

80

4.5

56

–7.7

–7.6

RR

V

1.1

A

2.1

4

71

– 0.6

typ

Output voltage

Output voltage tolerance

Line regulation

Load regulation

Bias current

Input bias fluctuation

Load bias current fluctuation

Output noise voltage

Ripple rejection ratio

Minimum input/output voltage difference

Peak output current

Output voltage temperature coefficient

Parameter

Symbol

Condition

min

max

Unit

V

I

=

–10 to –23V, 

I

O

=

5mA to 1A, P

D    

*

V

I

=

–10.5 to –25V, T

j

=

25˚C

I

O

=

5mA to 1.5A, T

j

=

25˚C

I

O

=

250 to 750mA, T

j

=

25˚C

V

I

=

–11 to –17V, T

j

=

25˚C

T

j

=

25˚C

V

I

=

–10.5 to –25V, T

j

=

25˚C

µ

V

I

O

=

5mA to 1A, T

j

=

25˚C

f

=

10Hz to 100kHz, Ta

=

25˚C

V

I

=

–11 to –21V, I

O

=

100mA, f

=

120Hz

I

O

=

1A, T

j

=

25˚C

T

j

=

25˚C

I

O

=

5mA, T

j

=

0 to 125˚C

T

j

=

25˚C

I

bias (IN)

I

bias (L)

V

DIF (min.)

I

O (Peak)

mV/˚C

V

O

/Ta

Note 1)  The specified condition T

j

=

25˚C means that the test should be carried out with the test time so short (within 10ms) that the

               drift in characteristic value due to the rise in chip junction temperature can be ignored.

Note 2)  Unless otherwise specified, V

I

=

–14V, I

O

=

500mA, C

I

=

2

µ

F, C

O

=

1

µ

F, T

j

=

0 to 125˚C 

* AN7900T series : 15W, AN7900F series : 10.25W

s

 Electrical Characteristics

 (Ta

=

25˚C) (continued)

 • AN7908T/AN7908F (–8V Type)

<

=

V

O

–9.35

V

–9

V

O

V

REG

IN

180

mV

7

mV

REG

L

mV

12

mV

mA

2.2

2

I

bias

mA

mA

58

dB

1

0.5

90

–9.45

180

90

4.5

56

–8.65

–8.55

RR

V

1.1

A

2.1

4

71

–0.6

typ

Output voltage tolerance

Input bias fluctuation

Load bias current fluctuation

Output noise voltage

Ripple rejection ratio

Minimum input/output voltage difference

Peak output current

Output voltage temperature coefficient

Parameter

Symbol

Condition

min

max

Unit

Output voltage

Line regulation

Load regulation

Bias current

V

no

V

I

=

–11.5 to –24V, 

I

O

=

5mA to 1A, P

D    

*

V

I

=

–11.5 to –26V, T

j

=

25˚C

I

O

=

5mA to 1.5A, T

j

=

25˚C

I

O

=

250 to 750mA, T

j

=

25˚C

V

I

=

–12 to –18V, T

j

=

25˚C

T

j

=

25˚C

V

I

=

–11.5 to –26V, T

j

=

25˚C

µ

V

I

O

=

5mA to 1A, T

j

=

25˚C

f

=

10Hz to 100kHz, Ta

=

25˚C

V

I

=

–12 to –22V, I

O

=

100mA, f

=

120Hz

I

O

=

1A, T

j

=

25˚C

T

j

=

25˚C

I

O

=

5mA, T

j

=

0 to 125˚C

T

j

=

25˚C

I

bias (IN)

I

bias (L)

V

DIF (min.)

I

O (Peak)

mV/˚C

V

O

/Ta

Note 1)  The specified condition T

j

=

25˚C means that the test should be carried out with the test time so short (within 10ms) that the

               drift in characteristic value due to the rise in chip junction temperature can be ignored.

Note 2)  Unless otherwise specified, V

I

=

–15V, I

O

=

500mA, C

I

=

2

µ

F, C

O

=

1

µ

F, T

j

=

0 to 125˚C 

* AN7900T series : 15W, AN7900F series : 10.25W

 • AN7909T/AN7909F (–9V Type)

<

=

background image

5

V

O

–10.4

V

–10

V

O

V

REG

IN

200

mV

8

mV

REG

L

mV

12

mV

mA

2.5

2.5

I

bias

mA

mA

64

V

no

dB

1

0.5

100

–10.5

200

100

5

56

–9.6

–9.5

RR

V

1.1

A

2.1

4

71

– 0.7

typ

Output voltage

Output voltage tolerance

Line regulation

Load regulation

Bias current

Input bias fluctuation

Load bias current fluctuation

Output noise voltage

Ripple rejection ratio

Minimum input/output voltage difference

Peak output current

Output voltage temperature coefficient

Parameter

Symbol

Condition

min

max

Unit

V

I

=

–12.5 to –25V, 

I

O

=

5mA to 1A, P

D    

*

V

I

=

–12.5 to –27V, T

j

=

25˚C

I

O

=

5mA to 1.5A, T

j

=

25˚C

I

O

=

250 to 750mA, T

j

=

25˚C

V

I

=

–13 to –19V, T

j

=

25˚C

T

j

=

25˚C

V

I

=

–12.5 to –27V, T

j

=

25˚C

µ

V

I

O

=

5mA to 1A, T

j

=

25˚C

f

=

10Hz to 100kHz, Ta

=

25˚C

V

I

=

–13 to –23V, I

O

=

100mA, f

=

120Hz

I

O

=

1A, T

j

=

25˚C

T

j

=

25˚C

I

O

=

5mA, T

j

=

0 to 125˚C

T

j

=

25˚C

I

bias (IN)

I

bias (L)

V

DIF (min.)

I

O (Peak)

mV/˚C

V

O

/Ta

Note 1)  The specified condition T

j

=

25˚C means that the test should be carried out with the test time so short (within 10ms) that the

               drift in characteristic value due to the rise in chip junction temperature can be ignored.

Note 2)  Unless otherwise specified, V

I

=

–16V, I

O

=

500mA, C

I

=

2

µ

F, C

O

=

1

µ

F, T

j

=

0 to 125˚C 

* AN7900T series : 15W, AN7900F series : 10.25W

Electrical Characteristics

 (Ta

=

25˚C) (continued)

 • AN7910T/AN7910F (–10V Type)

<

=

V

O

–12.5

V

–12

V

O

V

REG

IN

240

mV

10

mV

REG

L

mV

12

mV

mA

2.5

3

I

bias

mA

mA

75

V

no

dB

1

0.5

120

–12.6

240

120

5

55

–11.5

–11.4

RR

V

1.1

A

2.1

4

70

– 0.8

typ

Output voltage

Output voltage tolerance

Line regulation

Load regulation

Bias current

Input bias fluctuation

Load bias current fluctuation

Output noise voltage

Ripple rejection ratio

Minimum input/output voltage difference

Peak output current

Output voltage temperature coefficient

Parameter

Symbol

Condition

min

max

Unit

V

I

=

–14.5 to –27V, 

I

O

=

5mA to 1A, P

D    

*

V

I

=

–14.5 to –30V, T

j

=

25˚C

I

O

=

5mA to 1.5A, T

j

=

25˚C

I

O

=

250 to 750mA, T

j

=

25˚C

V

I

=

–16 to –22V, T

j

=

25˚C

T

j

=

25˚C

V

I

=

–14.5 to –30V, T

j

=

25˚C

µ

V

I

O

=

5mA to 1A, T

j

=

25˚C

f

=

10Hz to 100kHz, Ta

=

25˚C

V

I

=

–15 to –25V, I

O

=

100mA, f

=

120Hz

I

O

=

1A, T

j

=

25˚C

T

j

=

25˚C

I

O

=

5mA, T

j

=

0 to 125˚C

T

j

=

25˚C

I

bias (IN)

I

bias (L)

V

DIF (min.)

I

O (Peak)

mV/˚C

V

O

/Ta

Note 1)  The specified condition T

j

=

25˚C means that the test should be carried out with the test time so short (within 10ms) that the

               drift in characteristic value due to the rise in chip junction temperature can be ignored.

Note 2)  Unless otherwise specified, V

I

=

–19V, I

O

=

500mA, C

I

=

2

µ

F, C

O

=

1

µ

F, T

j

=

0 to 125˚C 

* AN7900T series : 15W, AN7900F series : 10.25W

 • AN7912T/AN7912F (–12V Type)

<

=

background image

6

V

O

–15.6

V

–15

V

O

V

REG

IN

300

mV

11

mV

REG

L

mV

12

mV

mA

2.5

3

I

bias

mA

mA

90

V

no

dB

1

0.5

150

–15.75

300

150

5

54

–14.4

–14.25

RR

V

1.1

A

2.1

4

69

–0.9

typ

Output voltage

Output voltage tolerance

Line regulation

Load regulation

Bias current

Input bias fluctuation

Load bias current fluctuation

Output noise voltage

Ripple rejection ratio

Minimum input/output voltage difference

Peak output current

Output voltage temperature coefficient

Parameter

Symbol

Condition

min

max

Unit

V

I

=

–17.5 to –30V, 

I

O

=

5mA to 1A, P

D    

*

V

I

=

–17.5 to –30V, T

j

=

25˚C

V

I

=

–20 to –26V, T

j

=

25˚C

V

I

=

–17.5 to –30V, T

j

=

25˚C

µ

V

V

I

=

–18.5 to –28.5V, I

O

=

100mA, f

=

120Hz

I

bias (IN)

I

bias (L)

V

DIF (min.)

I

O (Peak)

mV/˚C

V

O

/Ta

Note 1)  The specified condition T

j

=

25˚C means that the test should be carried out with the test time so short (within 10ms) that the

               drift in characteristic value due to the rise in chip junction temperature can be ignored.

Note 2)  Unless otherwise specified, V

I

=

–23V, I

O

=

500mA, C

I

=

2

µ

F, C

O

=

1

µ

F, T

j

=

0 to 125˚C 

* AN7900T series : 15W, AN7900F series : 10.25W

s

 Electrical Characteristics

 (Ta

=

25˚C) (continued)

 • AN7915T/AN7915F (–15V Type)

<

=

I

O

=

5mA to 1.5A, T

j

=

25˚C

I

O

=

250 to 750mA, T

j

=

25˚C

T

j

=

25˚C

I

O

=

5mA to 1A, T

j

=

25˚C

f

=

10Hz to 100kHz, Ta

=

25˚C

I

O

=

1A, T

j

=

25˚C

T

j

=

25˚C

I

O

=

5mA, T

j

=

0 to 125˚C

T

j

=

25˚C

V

O

–18.7

V

–18

V

O

V

REG

IN

360

mV

15

mV

REG

L

mV

12

mV

mA

2.5

5

I

bias

mA

mA

110

V

no

dB

1

0.5

180

–18.9

360

180

5

53

–17.3

–17.1

RR

V

1.1

A

2.1

4

68

–1

typ

Output voltage

Output voltage tolerance

Line regulation

Load regulation

Bias current

Input bias fluctuation

Load bias current fluctuation

Output noise voltage

Ripple rejection ratio

Minimum input/output voltage difference

Peak output current

Output voltage temperature coefficient

Parameter

Symbol

Condition

min

max

Unit

V

I

=

–21 to –33V, 

I

O

=

5mA to 1A, P

D    

*

V

I

=

–21 to –33V, T

j

=

25˚C

I

O

=

5mA to 1.5A, T

j

=

25˚C

I

O

=

250 to 750mA, T

j

=

25˚C

V

I

=

–24 to –30V, T

j

=

25˚C

T

j

=

25˚C

V

I

=

–21 to –33V, T

j

=

25˚C

µ

V

I

O

=

5mA to 1A, T

j

=

25˚C

f

=

10Hz to 100kHz, Ta

=

25˚C

V

I

=

–22 to –32V, I

O

=

100mA, f

=

120Hz

I

O

=

1A, T

j

=

25˚C

T

j

=

25˚C

I

O

=

5mA, T

j

=

0 to 125˚C

T

j

=

25˚C

I

bias (IN)

I

bias (L)

V

DIF (min.)

I

O (Peak)

mV/˚C

V

O

/Ta

Note 1)  The specified condition T

j

=

25˚C means that the test should be carried out with the test time so short (within 10ms) that the

               drift in characteristic value due to the rise in chip junction temperature can be ignored.

Note 2)  Unless otherwise specified, V

I

=

–27V, I

O

=

500mA, C

I

=

2

µ

F, C

O

=

1

µ

F, T

j

=

0 to 125˚C 

* AN7900T series : 15W, AN7900F series : 10.25W

 • AN7918T/AN7918F (–18V Type)

<

=

background image

7

V

O

–20.8

V

–20

V

O

V

REG

IN

400

mV

16

mV

REG

L

mV

12

mV

mA

3

5.5

I

bias

mA

mA

135

V

no

dB

1

0.5

200

–21

400

200

5

52

–19.2

–19

RR

V

1.1

A

2.1

4

67

–1

typ

Output voltage

Output voltage tolerance

Line regulation

Load regulation

Bias current

Input bias fluctuation

Load bias current fluctuation

Output noise voltage

Ripple rejection ratio

Minimum input/output voltage difference

Peak output current

Output voltage temperature coefficient

Electrical Characteristics

 (Ta

=

25˚C) (continued)

Parameter

Symbol

Condition

min

max

Unit

V

I

=

–23 to –35V, 

I

O

=

5mA to 1A, P

D    

*

V

I

=

–23 to –35V, T

j

=

25˚C

I

O

=

5mA to 1.5A, T

j

=

25˚C

I

O

=

250 to 750mA, T

j

=

25˚C

V

I

=

–26 to –32V, T

j

=

25˚C

T

j

=

25˚C

V

I

=

–23 to –35V, T

j

=

25˚C

µ

V

I

O

=

5mA to 1A, T

j

=

25˚C

f

=

10Hz to 100kHz, Ta

=

25˚C

V

I

=

–24 to –34V, I

O

=

100mA, f

=

120Hz

I

O

=

1A, T

j

=

25˚C

T

j

=

25˚C

I

O

=

5mA, T

j

=

0 to 125˚C

T

j

=

25˚C

I

bias (IN)

I

bias (L)

V

DIF (min.)

I

O (Peak)

mV/˚C

V

O

/Ta

Note 1)  The specified condition T

j

=

25˚C means that the test should be carried out with the test time so short (within 10ms) that the

               drift in characteristic value due to the rise in chip junction temperature can be ignored.

Note 2)  Unless otherwise specified, V

I

=

–29V, I

O

=

500mA, C

I

=

2

µ

F, C

O

=

1

µ

F, T

j

=

0 to 125˚C 

* AN7900T series : 15W, AN7900F series : 10.25W

 • AN7920T/AN7920F (–20V Type)

<

=

V

O

–25

V

–24

V

O

V

REG

IN

480

mV

18

mV

REG

L

mV

12

mV

mA

3

6

I

bias

mA

mA

170

V

no

dB

1

0.5

240

–25.2

480

240

5

50

–23

–22.8

RR

V

1.1

A

2.1

4

65

–1

typ

Output voltage

Output voltage tolerance

Line regulation

Load regulation

Bias current

Input bias fluctuation

Load bias current fluctuation

Output noise voltage

Ripple rejection ratio

Minimum input/output voltage difference

Peak output current

Output voltage temperature coefficient

Parameter

Symbol

Condition

min

max

Unit

V

I

=

–27 to –38V, 

I

O

=

5mA to 1A, P

D    

*

V

I

=

–27 to –38V, T

j

=

25˚C

I

O

=

5mA to 1.5A, T

j

=

25˚C

I

O

=

250 to 750mA, T

j

=

25˚C

V

I

=

–30 to –36V, T

j

=

25˚C

T

j

=

25˚C

V

I

=

–27 to –38V, T

j

=

25˚C

µ

V

I

O

=

5mA to 1A, T

j

=

25˚C

f

=

10Hz to 100kHz, Ta

=

25˚C

V

I

=

–28 to –38V, I

O

=

100mA, f

=

120Hz

I

O

=

1A, T

j

=

25˚C

T

j

=

25˚C

I

O

=

5mA, T

j

=

0 to 125˚C

T

j

=

25˚C

I

bias (IN)

I

bias (L)

V

DIF (min.)

I

O (Peak)

mV/˚C

V

O

/Ta

Note 1)  The specified condition T

j

=

25˚C means that the test should be carried out with the test time so short (within 10ms) that the

               drift in characteristic value due to the rise in chip junction temperature can be ignored.

Note 2)  Unless otherwise specified, V

I

=

–33V, I

O

=

500mA, C

I

=

2

µ

F, C

O

=

1

µ

F, T

j

=

0 to 125˚C 

* AN7900T series : 15W, AN7900F series : 10.25W

 • AN7924T/AN7924F (–24V Type)

<

=

background image

8

120

100

80

60

40

20

0

10

100

AN7905T/F

I

O

=

100mA

1k

10k

100k

Frequency  f (Hz)

Ripple Rejection Ratio  RR (dB)

RR– f

16

14

12

10

8

6

4

2

0

0

40

80

120

160

Ambient Temperature  Ta (˚C)

Power Dissipation  P

D

 (W)

 P

–Ta (AN7900F Series)

1.4

1.2

1.0

0.8

0.6

0.4

–50

0

50

100

150

Junction Temperature  T

j

 (˚C)

Minimum I/O Voltage Difference  V

DIF (min.)

 (V)

V

DIF (min.) 

–T

j

I

O

=

1000mA

I

O

=

500

mA

I

O

=

200mA

I

O

=

20m

A

0

2

4

6

8

10

10

0

–10

–20

20

15

10

5

Output Voltage Fluctuation (mV)

Input Voltage  V

I

 (V)

Input Transient Response

AN7905T/F

0

10

20

30

40

50

1

0

–1

–2

2

1

0

Output Voltage Fluctuation (V)

Load Current  I

O

 (A)

Load Transient Response

AN7905T/F

16

14

12

10

8

6

4

2

0

0

40

80

120

160

Ambient Temperature  Ta (˚C)

Power Dissipation  P

D

 (W)

(1) Infinite Heat Sink

(2) 5˚C/W Heat Sink

(3) 15˚C/W Heat Sink

(4) No Heat Sink

(1) Infinite Heat Sink

(2) 5˚C/W Heat Sink

(3) 15˚C/W Heat Sink

(4) No Heat Sink

(1)

(2)

(3)

(4)

(1)

(2)

(3)

(4)

Time  t (

µ

s)

Time  t (

µ

s)

  P

–Ta (AN7900T Series)

Basic Regulator Circuit

Application Circuit

–V

O

–V

O

2

µ

F

1

µ

F

–V

I

I

O

I

bias

6

Q

1

AN7900T

AN7900F

AN7900T

AN7900F

2

1

3

2

3

1

R

2

R

1

V

O

´

–V

I

|V

O

=

V

O

´ +  I

bias 

+          R

1

R

2

V

O

´

+

+

2

µ

F

1

µ

F

+

+

1) Current Bootstrap Circuit

2) Adjustable Output Regulator

Characteristic Curve

C

I   

: Required when the input line is long

C

: Improves the transient response.

C

O

C

I

Input

Output

AN7900T

AN7900F

Common

2

3

1

+

+