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ZHT2431 Datasheet(PDF) 1 Page - Zetex Semiconductors |
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ZHT2431 Datasheet(HTML) 1 Page - Zetex Semiconductors |
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1 / 6 page  SCHEMATIC DIAGRAM DEVICE DESCRIPTION The ZHT2431 is a three terminal adjustable shunt regulator offering excellent temperature stability and output current handling capability up to 25mA. The output voltage may be set to any chosen voltage between 1.24 and 15 volts by selection of two external divider resistors. The devices can be used as a replacement for zener diodes in many applications requiring an improvement in zener performance. The ZHT2431 is particularly used in the feedback control loop of switch mode power supplies. In this application the device 1.24 volt reference enables the generation of low voltage supplies, typically 3.3 volts or 3 volts. The ZHT2431 is intended for use over the extended operating range of -55°C to 125°C. FEATURES • Surface mountSOT23 package • TO92 package • 2.5% tolerance • Average temperaturecoefficient 50 ppm/°C • Temperature compensated for operation over the full temperature range • Programmable output voltage • 100µA to 25mA current sink capability • Low output noise • -55° to 125° Coperation APPLICATIONS • Shunt regulator • Series regulator • Voltage monitor • Over voltage/ undervoltage protection • Switch mode power supplies HIGH TEMPERATURE ADJUSTABLE PRECISION ZENER SHUNT REGULATOR ISSUE 1 JULY 1997 ZHT2431 VZ Gnd Vref |
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