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Voltage regulator touts 2.5每36V output voltage

Posted: 05 Aug 2011 ?? ?Print Version ?Bookmark and Share

Keywords:voltage? shunt regulator? sink capability?

Linear Technology Corp. has unveiled the MP-grade version of the LT1431, a shunt voltage regulator that operates over a -55∼C to 150∼C junction temperature range, has a 100mA sink capability, 0.4 percent initial reference voltage accuracy and a ㊣1.4 percent maximum voltage drift over temperature.

The on-chip divider resistors allow the LT1431 to be configured as a 5V shunt regulator and by adding two external resistors, the output voltage may be set to any value between 2.5V and 36V. The nominal internal current limit of 100mA may be decreased by including one external resistor.

Active output circuitry provides a very sharp turn-on characteristic, making this device an excellent replacement for Zener diodes in many applications such as onboard regulation, adjustable power supplies and isolated switching power supplies, the company stated. The LT1431 MP-grade is available in an SO-8 plastic package and starts at $6.49 each in 1000-piece quantities.

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