LP38511-1.8

March 6, 2009

800 mA Fast-Transient Response Low-Dropout Linear

Voltage Regulator with Error Flag

General Description

The LP38511-1.8 Fast-Transient Response Low-Dropout

Voltage Regulator offers the highest-performance in meeting

AC and DC accuracy requirements for powering Digital

Cores. The LP38511-1.8 uses a proprietary control loop that

enables extremely fast response to change in line conditions

and load demands. Output Voltage DC accuracy is guaran-

teed at ±2.5% over line, load and full temperature range from

-40°C to +125°C. The LP38511-1.8 is designed for inputs

from the 2.5V, 3.3V, and 5.0V rail, is stable with 10uF ceramic

capacitors, and has a fixed 1.8V output. An Error Flag feature

monitors the output voltage and notifies the system processor

when the output voltage falls more than 15% below the nom-

inal value. The LP38511-1.8 provides excellent transient per-

formance to meet the demand of high performance digital

core ASICs, DSPs, and FPGAs found in highly-intensive ap-

plications such as servers, routers/switches, and base sta-

tions.

Features

Temperature Range from -40°C to +125°C

mA

Applications

Typical Application Circuit

20182901

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