LM431 datasheet(4/9 Pages) HTC

Part #	LM431

Description	PROGRAMMABLE PRECISION SHUNT REGULATOR

PDF	9 Pages

Scroll/Zoom	100%

Manufacturer	HTC [HTC Korea TAEJIN Technology Co.]

Direct Link	http://www.htckorea.co.kr

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4 / 9 page

PROGRAMMABLE PRECISION SHUNT REGULATOR

LM431/A/C

Apr. 2012 – Rev.1.1

- 4 -

HTC

[ Fig 3. Test circuit for IKA(OFF) ]

The deviation parameters ΔVREF/ΔT and ΔIREF/ΔT are defined as the differences between the maximum and

minimum values obtained over the recommended temperature range. The average full-range temperature

coefficient of the reference voltage, αVREF, is defined as :

Where :

ΔTA is the recommended operating free-air temperature range of the device.

αVREF can be positive or negative, depending on whether minimum VREF or maximum VREF, respectively, occurs at

the lower temperature.

Calculating Dynamic Impedance

The dynamic impedance is defined as :

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When the device is operating with two external resistors, the total dynamic impedance of the circuit is given by :

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 

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LM431 Datasheet(PDF) 4 Page - HTC Korea TAEJIN Technology Co.