MC33466

www.DataSheet4U.com Order this document by MC33466/D MC33466 Fixed Frequency PWM Micropower DC-to-DC Converter The MC33466 series are micropower switching voltage regulators, specifically designed for handheld and laptop applications, to provide regulated output voltages using a minimum of external parts. A wide choice of output voltages are available. These devices feature a very low quiescent bias current of 15 µA typical. The MC33466H–XXJT1 series features a highly accurate voltage reference, an oscillator, a pulse width modulation (PWM) controller, a driver transistor (Lx), an error amplifier and feedback resistive divider. The MC33466H–XXLT1 is identical to the MC33466H–XXJT1, except that a drive pin (EXT) for an external transistor is provided. Due to the low bias current specifications, these devices are ideally suited for battery powered computer, consumer, and industrial equipment where an extension of useful battery life is desirable. FIXED FREQUENCY PWM MICROPOWER DC–to–DC CONVERTER SEMICONDUCTOR TECHNICAL DATA TAB 1 MC33466 Series Features: Low Quiescent Bias Current of 15 µA High Output Voltage Accuracy of ±2.5% Low Startup Voltage of 0.9 V at 1.0 mA Soft–Start = 500 µs Surface Mount Package H SUFFIX PLASTIC PACKAGE CASE 1213 (SOT–89) PIN CONNECTIONS MC33466H–XXJT1 Ground Output Lx 1 2 3 (Top View) Package (Tape/Reel) SOT–89 (T (Tape) ) 30° to +80 80°C TA = –30 SOT–89 (T (Tape) ) MC33466H–XXLT1 Ground Output EXT 1 2 3 (Top View) Tab (Tab is conn...