lp38512tj-adj National Semiconductor Corporation, lp38512tj-adj Datasheet

lp38512tj-adj

Manufacturer Part Number

lp38512tj-adj

Description

1.5a Fast-transient Response Adjustable Low-dropout Linear Voltage Regulator

Manufacturer

National Semiconductor Corporation

Datasheet

1.LP38512TJ-ADJ.pdf (14 pages)

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1.5A Fast-Transient Response Adjustable Low-Dropout

Linear Voltage Regulator

General Description

The LP38512-ADJ Fast-Transient Response Low-Dropout

Voltage Regulator offers the highest-performance in meeting

AC and DC accuracy requirements for powering Digital

Cores. The LP38512-ADJ 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 LP38512-ADJ is designed for inputs

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

capacitors, and has an adjustable output voltage. The

LP38512-ADJ provides excellent transient performance to

meet the demand of high performance digital core ASICs,

DSPs, and FPGAs found in highly-intensive applications such

as servers, routers/switches, and base stations.

Typical Application Circuit

300409

LP38512-ADJ

Features

■

Applications

■

2.25V to 5.5V Input Voltage Range

Adjustable Output Voltage Range of 0.5V to 4.5V

1.5A Output Load Current

±2.0% Accuracy over Line, Load, and Full-Temperature

Range from -40°C to +125°C

Stable with tiny 10 µF ceramic capacitors

Enable pin

Typically less than 1uA of Ground pin current in when

Enable pin is low

25dB of PSRR at 100 kHz

Over-Temperature and Over-Current Protection

PSOP-8 and TO263 THIN Surface Mount Packages

Digital Core ASICs, FPGAs, and DSPs

Servers

Routers and Switches

Base Stations

Storage Area Networks

DDR2 Memory

30040901

February 12, 2009

www.national.com

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