SPX1431 Datasheet | Exar

DESCRIPTION The SPX1431 is a 3-terminal adjustable shunt voltage regulator providing a highly accurate bandgap reference. The SPX1431 acts as an open-loop error amplifier with a 2.5V temperature pensation reference. The SPX1431's thermal stability, wide operating current (150m A) and temperature range (-55°C to 125°C) makes it suitable for a variety of applications that require a low cost, high performance solution. SPX1431 tolerance of 0.4% is proven to be sufficient to overe all of the other errors in the system to virtually eliminate the need for trimming in the power supply manufacturer's assembly lines and contributes a significant cost savings. The output voltage may be adjusted to any value between VREF and 36 volts with two external resistors. The SPX1431 is available in SOIC-8 and SOT-89-3 packages. APPLICATIONS - Battery Operating Equipment - Adjustable Supplies - Switching Power Supplies - Error Amplifiers - Single Supply Amplifier - Monitors / VCRs / TVs - Personal puters Rev. 2.0.1 FEATURES - Trimmed Bandgap Reference to 0.4% - Wide Operating Current 1m A to 150m A - -55°C to 125°C Extended Temperature Range - 30 ppm/°C Low Temperature Coefficient - Improved Replacement in Performance for LT1431 - Low Cost Solution - Offered in SOIC-8 and SOT-89 TYPICAL APPLICATION DIAGRAM Fig. 1: SPX1431 Block Diagram Exar Corporation 48720 Kato Road, Fremont CA 94538, USA .exar. Tel. +1 510 668-7000 - Fax. +1 510 668-7001 Precision Adjustable Shunt Regulator ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. Cathode-Anode Reverse Breakdown VKA 37V Anode-Cathode Forward Current, (<10ms) IAK 1A Operating Cathode Current IKA 150m A...