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STMicro voltage reference offers controlled output

Posted: 19 May 2004 ?? ?Print Version ?Bookmark and Share

Keywords:computer motherboards? stb? instrumentation? battery chargers? switch-mode power supplies?

Designed for computer motherboards and STBs, instrumentation, battery chargers, switch-mode power supplies (SMPS) and battery-operated equipment, the TS3431 low-voltage shunt voltage reference of STMicroelectronics is claimed by the company to provide a precisely controlled output and can be used to replace Zener diodes.

When used in the feedback control loop of an SMPS, the devices enable it to generate low voltages, such as 3.3V or 3V. The reference voltage can be programmed with an external resistor bridge to output any voltage from 1.24V to 24V. The devices hold that voltage with an accuracy of 2 percent, 1 percent or 0.5 percent.

Available in SOT23-3L or TO-92 package, the devices operate within the -40C to 125C temperature and are rated at 0.1A to 0.4A.





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