SPX2951

® SPX2950/SPX2951 150mA Low Dropout Voltage Regulator FEATURES ■ 5.0V and 3.3V at 150mA Output ■ Accurate: 0.5% for SPX2950A/SPX2951A ■ Very Low Quiescent Current ■ Low Dropout Voltage: 300mV at 150mA ■ Extremely Tight Load and Line Regulation ■ Very Low Temperature Coefficient ■ Current & Thermal Limiting ■ Need Only 1µF for Stability ■ Offered in TO-92 (SPX2950) and SOIC (SPX2951) ■ Direct Replacement for LP2950/LP2951 SPX2951 versions only ■ Error Flag Warns of Output Dropout ■ Logic-Controlled Electronic Shutdown ■ Output Programmable From 1.24 to 29V 8-Pin Surface Mount (S) OUTPUT SENSE SHUTDOWN GROUND 1 2 3 4 8 INPUT 7 FEEDBACK 6 5V or 3.3V Output 5 ERROR VOUT TO-92 (N) 1 23 GROUND VIN SPX2951 Top View SPX2950 Bottom View Now Available in Lead Free Packaging APPLICATIONS ■ Battery Powered Systems ■ Cordless Telephones ■ Radio Control Systems ■ Portable/Palm Top/Notebook Computers ■ Portable Consumer Equipment ■ Portable Instrumentation ■ Avionics ■ SMPS Post-Regulator ■ Voltage Reference ■ Automotive Electronics DESCRIPTION The SPX2950 and SPX2951 are low power voltage regulators. These devices are an excellent choice for use in battery-powered applications such as cordless telephones, radio control systems, and portable computers. The SPX2950 and SPX2951 feature low quiescent current and low dropout voltage (typ. 20mV at 100µA and 300mV at 150mA). This includes a tight initial tolerance of (0.5% for SPX2950A/SPX2951A), extremely good load and line regul...