PRODUCT DESCRIPTION

The SPX2975 is a low power voltage regulator. This device is an excellent choice for use in battery-powered applications such as cordless telephones, radio control systems, and portable computers. The SPX2975 features very low quiescent current and very low dropout voltage (Typ. 50mV at light load and 380 mV at 180 mA). This includes a tight initial tolerance of 0.5 typ., extremely good load and line regulation 0.05 typ. and very low output temperature coefficient, making the SPX2975 useful as a low-power voltage reference. Other additional key features include higher output current (150mA), positive transient protection up to 60V (Load dump), and the ability to survive an unregulated input voltage transient of -20V below ground (reverse battery).

FEATURES

• 3.0V, 3.3V and 5.0V Fixed Output Voltages

• Very Low Quiescent Current

• Low Dropout Voltage

• Extremely Tight Load And Line Regulation

• Very Low Temperature Coefficient

• Needs Only 1µF For Stability

• Current & Thermal Limiting

• Unregulated DC Input Can Withstand -20V Reverse Battery And +60V Positive Transients

• Similar Replacement For LP2950/LP2951 Sockets

SPX2975 SO-8 versions only

• Error Flag Warns Of Output Dropout

• Logic- Controlled Electronic Shutdown

• Output Programmable from 1.24 to 29V

APPLICATIONS

• Battery Powered Systems

• Cordless Telephones

• Radio Control Systems

• Portable/Palm Top/Notebook Computers

• Portable Consumer Equipment

• Portable Instrumentation

• Avionics

• Automotive Electronics

• SMPS Post-Regulator

• Voltage Reference