Micropower 800mA Low Noise "Ceramic Stable" Voltage
Regulator for Low Voltage Applications
The LP3879 is a 800 mA fixed-output voltage regulator
designed to provide high performance and low noise in
applications requiring output voltages between 1.0V and
Using an optimized VIP™ (Vertically Integrated PNP) pro-
cess, the LP3879 delivers superior performance:
Ground Pin Current: Typically 5.5 mA @ 800 mA load, and
www.DataS2h0e0eµt4AU@.co1m00 µA load.
Low Power Shutdown: The LP3879 draws less than 10 µA
quiescent current when shutdown pin is pulled low.
Precision Output: Guaranteed output voltage accuracy is
1% at room temperature.
Low Noise: Broadband output noise is only 18 µV (typical)
with 10 nF bypass capacitor.
n Standard output voltage: 1.00V, 1.20V
n Custom voltages available from 1.0V to 1.2V (50 mV
n Input voltage: 2.5 to 6V
n 1% initial output accuracy
n Designed for use with low ESR ceramic capacitors
n Very low output noise
n Sense option improves load regulation
n 8 Lead PSOP and LLP surface mount packages
n <10 µA quiescent current in shutdown
n Low ground pin current at all loads
n High peak current capability
n Over-temperature/over-current protection
n -40˚C to +125˚C junction temperature range
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
n Medical Instrumentation
Basic Application Circuit
*Capacitance values shown are minimum required to assure stability. Larger output capacitor provides improved dynamic response. Output capacitor must
meet ESR requirements (see Application Information).
**The Shutdown pin must be actively terminated (see Application Information). Tie to INPUT (Pin 4) if not used.
VIP™ is a trademark of National Semiconductor Corporation.
© 2006 National Semiconductor Corporation DS201613