SPX2954 250mA Low Dropout Voltage Regulator Description FEATURES The SPX2954 and SPX2954A are low power voltage regulators. 5.0V and 3.3V versions at 250mA output These devices are an excellent choice for use in battery-powered Accurate 0.5% for SPX2954A Very low quiescent current applications such as cordless telephones, radio control systems, Low dropout: 310mV at 250mA and portable computers. The SPX2954 and SPX2954A feature low Extremely tight load and line regulation quiescent current and low dropout voltage (typ. 20mV at 100A and Very low temperature coefficient 310mV at 250mA). This includes a tight initial tolerance (0.5% for Current and thermal limiting SPX2954A), extremely good load and line regulation (0.05% typ.), Need only 1F for stability and very low output temperature coefficient (20 ppm/C typ.), making Direct replacement for LP2954 the SPX2954/SPX2954A useful as a low-power voltage reference. Error flag warns of output dropout Logic-controlled electronic shutdown The error flag output feature is used as a power-on reset for warning Programmable output from 1.24V to 30V of a low output voltage, due to a falling input voltage. The logic- compatible shutdown feature enables the regulator to be switched ON and OFF. The SPX2954/SPX2954A is offered in a 3-pin SOT-223 package and an 8-pin SOIC package. Typical Application V IN 100K 8 VIN ERROR 5 ERROR 1.2 to 30V 1 OUTPUT VOUT SPX2954 + SHUTDOWN 3 R 1 3.3F SD .01F INPUT FB GND 7 4 1.23V V R REF 2 Typical Application REV1A 1/15SPX2954 Absolute Maximum Ratings Stresses beyond the limits listed below may cause Feedback Input Voltage ................................... -1.5V to 30V permanent damage to the device. Exposure to any Absolute Shutdown Input Voltage .................................. -0.3V to 30V Maximum Rating condition for extended periods may affect Error Comparator Voltage ............................... -0.3V to 30V device reliability and lifetime. ESD Rating ............................................................. 2kV Min Power Dissipation ..................................... Internally Limited Lead Temperature (soldering, 5 seconds) ................. 260C Storage Temperature .................................. -65C to 150C Operating Junction Temperature Range ..... -40C to 125C Input Supply Voltage ....................................... -0.3V to 30V REV1A 2/15