LX8820

LX8820 TM ® 3.3V/1.0A Ultra Low Dropout Regulator P RODUCTION DATA SHEET DESCRIPTION The LX8820 is an ultra lowdropout single output positivevoltage linear regulator. The regulator has a precise, fixed output capable of delivering 1.2 amps. The LX8820 output is internally programmed for 3.3V. Regulator stability is maintained www.DataSheet4U.com with any capacitor ESR, allowing ceramic, tantalum or electrolytic types. Capacitance range is flexible beginning with 2.2µF to large values. The CMOS wafer process increasing regulator efficiency by minimizing operating ground current (typically <200µA). compared to BiPolar technology . The low RDSON of the PMOS output stage results in ultra low dropout (typically 0.45V @ 1A). Output voltage overshoot is controlled using slew rate control, as VIN is applied, typically VOUT overshoot < 2% for VIN ≤ 1V/µS ramp. Transient response to a Step Load is fast and controlled, VOUT overshoot remains within 2% of nominal for 400mA step sizes. Thermal Shutdown, Current Limit and Short Circuit Current protection are integrated on-chip for survival during fault conditions. Microsemi’s small 3x3mm body size (MO-229) package enables maximum power dissipation with a minimum surface mount area. KEY FEATURES ƒ Accurate Output Voltage ƒ Typical Dropout of 0.7V at 1A and 0.25V at 0.8A ƒ Independent Thermal and Current Limit Protection ƒ Low Tolerance Load Regulation (0.4%) ƒ Wide DC Supply Voltage of 4V to 10V ƒ Loop Stability Independent of Output Cap...