ZR431

ADJUSTABLE PRECISION ZENER SHUNT REGULATOR

ZR431

Document number: DS33255 Rev. 6 - 2

3 of 9

www.diodes.com

October 2011

© Diodes Incorporated

DC Test Circuits

Fig.3 Test Circuit for Off State Current

temperature range.

)

2

T

1

T

(

V

1000000

V

)

C

/

ppm

(

V

ref

dev

o

ref

−

×

=

The dynamic output impedance, RZ is defined as:

z

z

z

I

V

R

Δ

Δ

=

When the device is programmed with two external resistors,

R1 and R2, (Fig 2), the dynamic output impedance of the

overall circuit, R’, is defined as:

)

2

R

1

R

1

(

R

R

z

+

=

′

Input

I

L

I

REF

I

Z

V

Z

V

REF

Input

I

L

I

REF

I

Z

V

Z

V

REF

R1

R2

Input

I

ZOFF

V

Z

T1

T2

Temperature

V

= V

- V

DEV

MAX

MIN

V

MAX

V

MIN