AN7906F datasheet(8/8 Pages) PANASONIC

Part #	AN7906F

Description	3-pin Negative Output Voltage Regulators 1A Type

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Manufacturer	PANASONIC [Panasonic Semiconductor]

Direct Link	http://www.panasonic.com/industrial/

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8 / 8 page

8

120

100

80

60

40

20

0

10

100

AN7905T/F

IO

=100mA

1k

10k

100k

Frequency f (Hz)

RR– f

16

14

12

10

8

6

4

2

0

40

80

120

160

Ambient Temperature Ta (˚C)

PD –Ta (AN7900F Series)

1.4

1.2

1.0

0.8

0.6

0.4

–50

0

50

100

150

Junction Temperature Tj (˚C)

VDIF (min.) –Tj

IO

=1000mA

I

O

=5

00m

A

I

O

=200mA

I

O

=2

0mA

02468

10

0

–10

–20

20

15

10

5

Input Transient Response

AN7905T/F

0

1020304050

1

0

–1

–2

2

1

0

Load Transient Response

AN7905T/F

16

14

12

10

8

6

4

2

0

40

80

120

160

Ambient Temperature Ta (˚C)

(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 (

µs)

Time t (

µs)

PD –Ta (AN7900T Series)

s Basic Regulator Circuit

s Application Circuit

–VO

2

µF

1

µF

–VI

IO

Ibias

6

Ω

Q1

AN7900T

AN7900F

AN7900T

AN7900F

2

1

3

2

3

1

R2

R1

VO´

–VI

|VO|

=V

O´ + Ibias +

R1

R2

VO´

–

+

–

+

2

µF

1

µF

–

+

–

+

1) Current Bootstrap Circuit

2) Adjustable Output Regulator

s Characteristic Curve

CI : Required when the input line is long

CO : Improves the transient response.

CO

CI

Input

Output

AN7900T

AN7900F

Common

2

3

1

–

+

–

+

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