SPX1129

® SPX1129 400mA Low Dropout Voltage Regulator FEATURES ■ 1% Output Accuracy 3.3V, 5V, at 500mA Output ■ Very Low Quiescent Current ■ 0.42V Dropout Voltage at 400mA ■ Extremely Tight Load and Line Regulation ■ Current & Thermal Limiting ■ Reverse Battery Protection ■ Equivalent Replacement For LT1129 SPX1129 3 Pin TO-263 SPX1129 3 Pin TO-220 1 2 3 1 2 3 VOUT GND VIN VOUT GND VIN SPX1129 3 Pin TO-263 SPX1129 3 TO-252 VIN GND VOUT 1 2 3 APPPLICATIONS ■ Power Supply ■ Communications Equipment ■ Computers and Peripherals VIN GND VOUT 2 1 Now Available in Lead Free Packaging DESCRIPTION The SPX1129 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 SPX1129 features very low quiescent current and very low dropout voltage of 0.42 volts. This includes a tight initial tolerance of ±1% max, and a very low output temperature coefficient, making the SPX1129 useful as a lowpower voltage reference. The SPX1129 is offered in a SOT-223, TO-220, TO-252 & TO-263 3 lead packages. TYPICAL APPLICATION CIRCUIT VIN IIN IN OUT 5V IL SPX1129 + 0.1µF GND + 2.2µF LOAD IIN = IL + IG IG Fixed +5V Regulator Circuit.. Date: 5/25/04 SPX1129 400mA Low Dropout Voltage Regulator ©Copyright 2004 Sipex Corporation 1 ABSOLUTE MAXIMUM RATINGS Power Dissipation ........................................................ Internally Limited Lead Temp. (Sol...