Panasonic AN1431T, AN1431M Datasheet

■ Overview

The AN1431T and AN1431M are high accuracy stabilized
power supplies in which the output voltage can be adjusted in
the range from approx. 2.5 to 36V by using the external resistor
under the operating temperature. Because of its fast rise charac­teristics, it can be replaced with Zener diode and has the wide
application range.

■ Features

•

High precision reference voltage : 2.5V±2%

•

High-temperature stability : 17ppm/˚C typ.

•

Output voltage externally adjustable : 2.5 to 36V

•

Fast rise

•

Low input impedance : 0.2Ω (typ.)

•

Low output noise voltage

AN1431T, AN1431M

Surface-mount Adjustable Output Shunt Regulator

Unit : mmAN1431T

JEDEC : TO-92 (SSIP003-P-0000)

5.0±0.2

5.1±0.213.5±0.5

0.45

2.3±0.2

2.54

321

+0.2
– 0.1

4.0±0.2

■ Block Diagram

Unit : mmAN1431M

JEDEC : TO-92 (SSIP003-P-0000)

5.0±0.2

5.1±0.213.5±0.5

0.45

2.3±0.2

2.54

321

+0.2
– 0.1

4.0±0.2

■ Pin Name

〈AN1431T〉

Pin No.

Pin name
1
2
3

Cathode
Reference pin
Anode

〈AN1431M〉

Pin No.

Pin name
1
2
3

Reference pin
Anode
Cathode

Output Tr

3 2 1

V

1

Current
Source

1

I

K

+

Error
Amp.

–

3 2

R

Voltage
Reference

1

R

2

R

V

= V

KA

REF

1

(1 + ) + I

R

2

REF

· R

1

R2 = 2.5kΩ

I

REF

V

KA

V

REF

Pin number in is for the AN1431T.
Pin number in is for the AN1431M.

V

CC

I

CC

P

D

I

REF

V

opr

T

stg

V

mA

mW

mA

˚C

˚C

■ Absolute Maximum Ratings (Ta=25˚C)

37

–100 to+150

650

*

– 0.05 to+10

–20 to+85

–25 to+80
–55 to+150
–55 to+125

Supply voltage
Supply current
Power dissipation
Reference input current

Operating ambient
temperature

Storage temperature

AN1431T
AN1431M
AN1431T
AN1431M

* For the AN1431M, SM to the printed board (glass epoxy of 20 × 20 × 1.7mm with copper film of 1cm2)

Parameter Symbol Rating Unit

Parameter Symbol Range

■ Recommended Operating Range (Ta=25˚C)

Operating supply voltage range

V

KA

V

REF

(2.5 to 36V)

Reference voltage

V

REF

2.55 V2.50

V

KA=VREF

, IK=10mA

VKA=V

REF

, IK=10mA,

Ta=0 to+70˚C

Reference voltage fluctuation

∆V

REF

–2.7 mV/V–1.2

I

K

=10mA, DVKA=10V to V

REF

∆V

KA

mV/V

I

K

=10mA, DVKA=36 to 10V

Reference input current

I

REF

µA2

I

K

=10mA, R1=10kΩ, R2= ∞

µA

I

K

=10mA, R1=10kΩ, R2= ∞,

Ta=0 to+70˚C

Reference input current temperature deviation

I

REF (Jev)

*

2

mA0.4

V

KA=VREF

–1

Minimum cathode current

I

min

µA0.1

V

KA

=36V, V

REF

=0V

Off-state cathode current

I

OFF

Ω

Dynamic impedance

|ZKA|

*

3

VKA=V

REF

, IK=1 to 100mA,

f 1kHz

1.0

0.5

–2

4

1.2

1.0

2.45

Reference voltage temperature deviation

V

REF (Jev)

*

1

*

2

mV3 17

0.4

0.2

Parameter Symbol Condition min typ max Unit

■ Electrical Characteristics (Ta=25˚C)

<

=