SPX1521

® SPX1521 300mA Low Dropout Voltage Regulator FEATURES ■ 1% Output Accuracy 3.3V, 5V, at 300mA Output ■ Very Low Quiescent Current ■ 0.3V (Typ.) Dropout Voltage at 300mA ■ Extremely Tight Load and Line Regulation ■ Current & Thermal Limiting ■ Reverse Battery Protection ■ Equivalent Replacement For LT1521 SPX1521 3 Pin TO-263 1 2 3 VOUT GND VIN Now Available in Lead Free Packaging DESCRIPTION The SPX1521 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 SPX1521 features very low quiescent current and very low dropout voltage. This includes a tight initial tolerance of ±1% max, and very low output temperature coefficient, making the SPX1521 useful as a low-power voltage reference. The SPX1521 is offered in 3 pin TO-252, SOT-223, TO-220 & TO-263 packages. TYPICAL APPLICATIONS CIRCUIT VOUT IIN IN OUT 5V IL SPX1521 0.1µF + GND + 2.2µF LOAD IIN = IL + IG IG Date: 5/25/04 SPX1521 300mA Low Dropout Voltage Regulator ©Copyright 2004 Sipex Corporation 1 ABSOLUTE MAXIMUM RATINGS Power Dissipation ........................................................ Internally Limited Lead Temp. (Soldering, 5 Seconds) ............................................. 260°C Storage Temperature Range ........................................ -65°C to +150°C Operating Junction Temperature Range ....................... -40°C to +125°C Input Supply Vo...