Datasheet
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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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.