LP3879MRX-1.0SLASHNOPB中文资料德州仪器数据手册PDF规格书

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.