Diodes ZR431 User Manual download pdf (Page 3)

ZR431

ADJUSTABLE PRECISION ZENER SHUNT REGULATOR

ZR431

Document number: DS33255 Rev. 6 - 2

3 of 9

www.diodes.com

October 2011

ADVANCE INFORMATION

DC Test Circuits

Fig. 1 Test Circuit for V

= V

REF

Fig. 2 Test Circuit for V

> V

REF

Fig.3 Test Circuit for Off State Current

Deviation of reference input voltage, V

DEV

, is defined as the maximum variation of the reference input voltage over the full

temperature range.

The average temperature coefficient of the reference input voltage, V

REF

is defined as:

)2T1T(V

1000000V

)C/ppm(V

ref

dev

ref

−

The dynamic output impedance, RZ is defined as:

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:

)

1(RR

′

Input

REF

Input

REF

Input

ZOFF

T1 T2Temperature

V = V - V

DEV MAX MIN

MAX

MIN

1 2 3 4 5 6 7 8 9

T1 T2Temperature 3
V = V - V 3
October 2011 4
ADVANCE INFORMATION 6
Application Characteristics 6

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