Voltage Reference provides precisely controlled output.
Press Release Summary:
Model TS3431 can be programmed with external resistor bridge to output any voltage from 1.24-24 V. It will then hold that voltage with accuracy of ±2%, ±1%, or ±0.5%, depending on which version user chooses. Part will sink between 400 µA and 100 mA of current and maintain accuracy over industrial operating temperature of -40 to +125°C. Applications include computer motherboards, set-top boxes, instrumentation, battery chargers, and SMPS.
Original Press Release:
Programmable Voltage Reference from STMicroelectronics Goes Low and Stays Steady
Useful in low-voltage systems
Geneva, May 7, 2004 - STMicroelectronics (NYSE: STM) has introduced a low-voltage shunt voltage reference that can provide a precisely controlled output. It is designed for use on computer motherboards and in set-top boxes, instrumentation, battery chargers, switch-mode power supplies (SMPS) and battery-operated equipment.
The TS3431 can be used to replace Zener diodes in applications that need better performance, particularly at low voltages. Using the reference in the feedback control loop of an SMPS will enable it to generate low voltages, such as 3.3 or 3V. Other typical applications include shunt or series regulators, voltage monitors and error amplifiers.
The reference can be programmed with an external resistor bridge to output any voltage from 1.24V to 24V. It will then hold that voltage with an accuracy of ±2%, ±1% or ±0.5%, depending on which version the user chooses.
The part will sink between 400µA and 100mA of current and maintain its accuracy over the industrial operating temperature range of -40° to +125°C.
It is available in three versions (TS3431, A and B), depending on the accuracy the user needs. It is available in two packages: SOT23-3L for space-saving applications or the standard three-pin TO-92. US pricing is $0.22 in quantities of 1K units.
For further information please visit www.st.com/stdlinear
About STMicroelectronics
STMicroelectronics is a global leader in developing and delivering semiconductor solutions across the spectrum of microelectronics applications. An unrivalled combination of silicon and system expertise, manufacturing strength, Intellectual Property (IP) portfolio and strategic partners positions the Company at the forefront of System-on-Chip (SoC) technology and its products play a key role in enabling today's convergence markets. The Company's shares are traded on the New York Stock Exchange, on Euronext Paris and on the Milan Stock Exchange. In 2003, the Company's net revenues were $7.24 billion and net earnings were $253 million. Further information on ST can be found at www.st.com.
