GM431AST89T datasheet(5/14 Pages) GAMMA

Part #	GM431AST89T

Description	2.5V ADJUSTABLE SHUNT REGULATOR

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Manufacturer	GAMMA [Gamma Microelectronics Inc.]

Direct Link	http://www.gammamicro.com.tw/

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5

ELECTRICAL CHARACTERISTICS (T = 25°C unless otherwise noted)

A

GM431A (0.5%)

PARAMETER

CONDITION

MIN

TYP

MAX

UNIT

Reference Voltage

Vref

(1)

V

= V

, I = 10 mA, T = 25°C

KA

ref

K

A

2.487

2.500

2.512

V

(1)

V

=V

,I =10 mA,T = 0 to 70°C

KA

ref K

A

V

temp deviation

ref

Vdev

(1)

V

= V

, I = 10 mA , T = full range

KA

ref

K

A

4

17

mV

Ratio of change in Vref

to change in VKA

I = 10mA

K

-1.0

-0.4

mV/V

Reference input current

Iref

(2)

I = 10mA, R1 = 10KW, R2 =

K

0.7

4.0

mA

Deviation of reference

input current over full

temperature range

Iref(dev)

(2)

I = 10mA, R1 = 10KW, R2 =

K

T = full range

A

0.4

1.2

mA

Minimum operating

current

IK(min)

(1)

V= V

KA

ref

1.0

mA

Off-state cathode

current

IK(off)

(3)

V

= 36V, V

= 0V

KA

ref

0.1

1

(3)

V

= 16V, V

= 0V

KA

ref

Dynamic impedance

| Z

|

KA

(1)

f 1kHz,V

=V

, I =1mA to 100mA

KA

ref

K

0.2

0.50

W

DVref

DVKA

mA

GM431B (1.0%)

NOTES:

(1) See test circuit 1 on page 5.

(2) See test circuit 2 on page 5.

(3) See test circuit 3 on page 5.

DV

= 10V to V

KA

ref

DV

= 36V to 10V

KA

-2.7

-2.0

0.4

PARAMETER

CONDITION

MIN

TYP

MAX

UNIT

Reference Voltage

Vref

(1)

V

= V

, I = 10 mA, T = 25°C

KA

ref

K

A

2.475

2.500

2.525

V

(1)

V

=V

,I =10 mA,T = 0 to 70°C

KA

ref K

A

V

temp deviation

ref

Vdev

(1)

V

= V

, I = 10 mA , T = full range

KA

ref

K

A

4

17

mV

Ratio of change in Vref

to change in VKA

I = 10mA

K

-1.0

-0.4

mV/V

Reference input current

Iref

(2)

I = 10mA, R1 = 10KW, R2 =

K

0.7

4.0

mA

Iref(dev)

(2)

I = 10mA, R1 = 10KW, R2 =

K

T = full range

A

0.4

1.2

mA

Minimum operating

current

IK(min)

(1)

V= V

KA

ref

1.0

mA

Off-state cathode

current

IK(off)

(3)

V

= 36V, V

= 0V

KA

ref

0.1

1

(3)

V

= 16V, V

= 0V

KA

ref

Dynamic impedance

| Z

|

KA

(1)

f 1kHz,V

=V

, I =1mA to 100mA

KA

ref

K

0.2

0.50

W

DVref

DVKA

mA

DV

= 10V to V

KA

ref

DV

= 36V to 10V

KA

-2.7

-2.0

0.4

Deviation of reference

input current over full

temperature range

A

MICROELECTRONICS

GM431

2.5V ADJUSTABLE SHUNT REGULATOR

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