LP38511-ADJ Datasheet, PDF (1/14 Pages) National Semiconductor (TI) – 800mA Fast-Transient Response Adjustable Low-Dropout Linear Voltage Regulator

LP38511-ADJ
February 12, 2009
800mA Fast-Transient Response Adjustable Low-Dropout
Linear Voltage Regulator
General Description
The LP38511-ADJ Fast-Transient Response Low-Dropout
Voltage Regulator offers the highest-performance in meeting
AC and DC accuracy requirements for powering Digital
Cores. The LP38511-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 LP38511-ADJ is designed for inputs
from the 2.5V, 3.3V, and 5.0V rail, is stable with 10 uF ceramic
capacitors, and has an adjustable output voltage. The
LP38511-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.
Features
■ ^{2.25V to 5.5V Input Voltage Range}
■ ^{Adjustable Output Voltage Range of 0.5V to 3.3V}
■ ^{800mA Output Load Current}
■ ^{±2.0% Accuracy over Line, Load, and Full-Temperature}
Range from -40°C to +125°C
■ ^{Stable with tiny 10 uF ceramic capacitors}
■ ^{Enable pin}
■ ^{Typically less than 1uA of Ground pin current with Enable}
pin low
■ ^{25dB of PSRR at 100 kHz}
■ ^{Over-Temperature and Over-Current Protection}
■ ^{PSOP-8 and TO-263 THIN Surface Mount Packages}
Applications
■ ^{Digital Core ASICs, FPGAs, and DSPs}
■ ^Servers
■ ^{Routers and Switches}
■ ^{Base Stations}
■ ^{Storage Area Networks}
■ ^{DDR2 Memory}
Typical Application Circuit
30040801
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