The SPX2954 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 SPX2954 features very low quiescent current (75A Typ.) and very low dropout voltage. This includes a tight initial tolerance of 0.5% max and 1% max., and very low output temperature coefficient, making the SPX2954 useful as a low-power voltage reference. The key SPX2954 features include protection against reversed battery, fold-back current limiting, and automotive load dump protection (60V positive transient). The error flag output feature is used as power-on reset for warning of a low output voltage, due to falling voltage input of batteries. Another feature is the logic compatible shutdown input which enables the regulator to be switched on and off. The SPX2954 is offered in a 3-pin TO-92and TO-263 package compatible with other 5 volt regulators, in 8-Pin plastic, SO-8, (same pin out as SPX2951), TO220 and TO-263. The regulator output voltage (of the 8-pin) may be pin-strapped for a 5Vand 3.3V or programmed from 1.24V to 29V with an external pair of resistors. Look for SPX2951 for 150mA and LP2951 for 100mA applications.