Linear Technology LT1431 three-terminal adjustable shunt voltage regulator
Linear Technology has released a high-reliability, MP-grade version of the LT1431, a three-terminal adjustable shunt voltage regulator that operates over a -55 to 150°C junction temperature range.
The device has a 100 mA sink capability, 0.4% initial reference voltage accuracy and a ±1.4% maximum voltage drift over temperature. On-chip divider resistors allow the device to be configured as a 5 V shunt regulator.
By adding two external resistors, the output voltage may be set to any value between 2.5 and 36 V. The nominal internal current limit of 100 mA may be decreased by including one external resistor.
Active output circuitry provides a sharp turn-on characteristic, making this device a replacement for Zener diodes in many applications such as onboard regulation, adjustable power supplies and isolated switching power supplies.
Phone: 02 9644 7722
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