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RS431
Adjustable Precision Shunt Regulator
General Description
The RS431 series are three‐term...
Page No. : 1/10
RS431
Adjustable Precision Shunt
Regulator
General Description
The RS431 series are three‐terminal adjustable
regulators with guaranteed thermal stability over applicable temperature ranges. The output voltage may be set to any value between VREF (approximately 2.5 volts) and 36 volts with two external resistors. These devices have a typical dynamic output impedance of 0.2Ω. Active output circuitry provides a very sharp turn‐on characteristic, making these devices excellent replacement for zener diodes in many applications.
Features
● ● ● ● ● ● ●
Programmable Precise Output Voltage from 2.5V to 36V High Stability under Capacitive Load Low Temperature Deviation: 4.5mV Typical Low Dynamic Output Resistance: 0.2Ω Typical Sink Current Capacity from 1mA to 100mA Low Output Noise Wide Operating Range of ‐40 to 125oC ● Low Equivalent Full‐range Temperature Coefficient with 20PPM/oC Typical
Application Circuits
Fig 1. VK=VREF II IN
PD F w C
VK
ww re .nu at an e ce. 8 com Tr ia
Fig 2. VK>VREF II IN R1 VK IN IREF IK R2 VREF
Note: VK=VREF (1+R1/R2)+IREFxR1
Fig 3. Off‐State Current VK
IREF
IK
l
I OFF
VREF
This integrated circuit can be damaged by ESD. Orister Corporation recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range f...