LP3962, LP3965
www.ti.com
SNVS066H –MAY 2000–REVISED APRIL 2013
LP3962/LP3965 1.5A Fast Ultra Low Dropout Linear Regulators
Check for Samples: LP3962, LP3965
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FEATURES
DESCRIPTION
The LP3962/LP3965 series of fast ultra low-dropout
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• Ultra Low Dropout Voltage
linear regulators operate from a +2.5V to +7.0V input
• Low Ground Pin Current
supply. Wide range of preset output voltage options
• Load Regulation of 0.04%
are available. These ultra low dropout linear
regulators respond very fast to step changes in load
• 15µA Quiescent Current in Shutdown Mode
which makes them suitable for low voltage
• Specified Output Current of 1.5A DC
microprocessor applications. The LP3962/LP3965 are
• Available in SOT-223,SFM/TO-263 and TO-220
developed on a CMOS process which allows low
Packages
quiescent current operation independent of output
load current. This CMOS process also allows the
• Output Voltage Accuracy ± 1.5%
LP3962/LP3965 to operate under extremely low
• Error Flag Indicates Output Status (LP3962)
dropout conditions.
• Sense Option Improves Better Load
Dropout Voltage: Ultra low dropout voltage; typically
Regulation (LP3965)
38mV at 150mA load current and 380mV at 1.5A load
• Extremely Low Output Capacitor
current.
Requirements
Ground Pin Current: Typically 5mA at 1.5A load
• Overtemperature/Overcurrent Protection
current.
• −40°C to +125°C Junction Temperature Range
Shutdown Mode: Typically 15µA quiescent current
when the shutdown pin is pulled low.
APPLICATIONS
Error Flag: Error flag goes low when the output
• Microprocessor Power Supplies
voltage drops 10% below nominal value (for LP3962).
• GTL, GTL+, BTL, and SSTL Bus Terminators
SENSE: Sense pin improves regulation at remote
• Power Supplies for DSPs
loads. (For LP3965)
• SCSI Terminator
Precision Output Voltage: Multiple output voltage
• Post Regulators
options are available ranging from 1.2V to 5.0V and
• High Efficiency Linear Regulators
adjustable (LP3965), with a specified accuracy of
±1.5% at room temperature, and ±3.0% over all
• Battery Chargers
conditions (varying line, load, and temperature).
• Other Battery Powered Applications
Typical Application Circuits
*SD and ERROR pins must be pulled high through a 10kΩ pull-up resistor. Connect the ERROR pin to ground if this
function is not used. See Application Hints section for more information.
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2000–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
