LP3878 Datasheet | National Semiconductor

Description The LP3878 is a 800 m A fixed-output voltage regulator designed to provide high performance and low noise in applications requiring output voltages between 1.0V and 1.2V. Output noise can be reduced to 18µV (typical) by connecting .. an external 10 n F capacitor to the bypass pin. Using an optimized VIP™ (Vertically Integrated PNP) process, the LP3878 delivers superior performance: Ground Pin Current: Typically 5 m A @ 800 m A load, and 180 µA @ 100 µA load. Sleep Mode: The LP3878 draws less than 2.0 µA quiescent current when shutdown pin is pulled low. Precision Output: Guaranteed output voltage accuracy is 1% at room temperature. Features n Standard output voltage: 1.00V n Custom voltages available from 1.0V to 1.2V (50 m V increments) n Input voltage: 2.2 to 6.0V n 1% initial output accuracy n Guaranteed 800 m A continuous output current n Designed for use with low ESR ceramic capacitors n Very low output noise with external capacitor n Sense option improves load regulation n 8 Lead LLP surface mount package n < 2.0 µA quiescent current in shutdown n Low ground pin current at all loads n High peak current capability (1200 m A typical) n Overtemperature/overcurrent protection n 0˚C to +125˚C junction temperature range Applications n ASIC Power Supplies In: - Desktops, Notebooks and Graphic Cards - Set Top Boxes, Printers and Copiers n DSP and FPGA Power Supplies n SMPS Post-Regulator Basic Application Circuit - Capacitance values shown are minimum required to assure stability, but may be increased without limit. Larger output capacitor provides improved dynamic response. Output capacitor must meet ESR requirements (see Application Hints). - - Shutdown must be actively terminated (see App. Hints). Tie to INPUT (Pin4) if not used. VIP™ is a trademark of National Semiconductor Corporation. © 2004 National Semiconductor Corporation DS200868 .national. Block Diagram .. .national. Connection Diagram 8 Lead LLP Surface...