LP38512_15 Datasheet, PDF (1/21 Pages) Texas Instruments – 1.5A Fast-Transient Response Low-Dropout Linear Voltage Regulator with Error Flag

LP38512
www.ti.com
SNOSAU7F – NOVEMBER 2007 – REVISED APRIL 2013
LP38512-1.8 1.5A Fast-Transient Response Low-Dropout Linear Voltage Regulator with
Error Flag
Check for Samples: LP38512
FEATURES
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•2 2.25V to 5.5V Input Voltage Range
• 1.8V Fixed Output Voltage
• 1.5A Output Load Current
• ±2.5% Accuracy Over Line, Load, and Full-
Temperature Range from -40°C to +125°C
• Stable with Tiny 10 µF Ceramic Capacitors
• 0.20% Output Voltage Load Regulation from 10
mA to 1.5A
• Enable Pin
• Error Flag Indicates Status of Output Voltage
• 1uA of Quiescent Current in Shutdown
• 40dB of PSRR at 100 kHz
• Over-Temperature and Over-Current
Protection
• DDPAK/TO-263 and PFM Surface Mount
Packages
DESCRIPTION
The LP38512-1.8 Fast-Transient Response Low-
Dropout Voltage Regulator offers the highest-
performance in meeting AC and DC accuracy
requirements for powering Digital Cores. The
LP38512-1.8 uses a proprietary control loop that
enables extremely fast response to change in line
conditions and load demands. Output Voltage DC
accuracy is specified at 2.5% over line, load and full
temperature range from -40°C to +125°C. The
LP38512-1.8 is designed for inputs from the 2.5V,
3.3V, and 5.0V rail, is stable with 10 μF 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 nominal value. The LP38512-1.8
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.
APPLICATIONS
• Digital Core ASICs, FPGAs, and DSPs
• Servers
• Routers and Switches
• Base Stations
• Storage Area Networks
• DDR2 Memory
Typical Application Circuit
V_IN
ON
V_EN
OFF
GND
C_IN
10 PF
Ceramic
IN
OUT
LP38512
EN
ERROR
GND
C_OUT
10 PF
Ceramic
10 k:
V_OUT
GND
V_ERROR
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007–2013, Texas Instruments Incorporated