LM431 datasheet(4/9 Pages) HTC

部品番号	LM431

部品情報	PROGRAMMABLE PRECISION SHUNT REGULATOR

PDF	9 Pages

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メーカー	HTC [HTC Korea TAEJIN Technology Co.]

ホームページ	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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LM431 データシート(PDF) 4 Page - HTC Korea TAEJIN Technology Co.