1FEATURES
2• Standard Output Voltage: 1.00V, 1.20V
• Custom Voltages Available from 1.0V to 1.2V
(50 mV Increments)
• Input Voltage: 2.5 to 6V
• 1% Initial Output Accuracy
• Designed for Use with Low ESR Ceramic
Capacitors
• Very Low Output Noise
• Sense Option Improves Load Regulation
• 8-Lead SO PowerPad and WSON Surface
Mount Packages
• <10 μA Quiescent Current in Shutdown
• Low Ground Pin Current at all Loads
• High Peak Current Capability
• Over-Temperature/Over-Current Protection
• -40°C to +125°C Junction Temperature Range

APPLICATIONS
• ASIC Power Supplies In:
– Desktops, Notebooks and Graphic Cards
– Set Top Boxes, Printers and Copiers
• DSP and FPGA Power Supplies
• SMPS Post-Regulator
• Medical Instrumentation

DESCRIPTION
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 1.2V.
Using an optimized VIP (Vertically Integrated PNP)
process, the LP3879 delivers superior performance:
Ground Pin Current: Typically 5.5 mA @ 800 mA
load, and 200 μA @ 100 μA load.
Low Power Shutdown: The LP3879 draws less than
10 μA quiescent current when shutdown pin is pulled
low.
Precision Output: Ensured output voltage accuracy
is 1% at room temperature.
Low Noise: Broadband output noise is only 18 μV
(typical) with 10 nF bypass capacitor.