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
linear regulators operate from a +2.5V to +7.0V input
supply. Wide range of preset output voltage options
are available. These ultra low dropout linear
regulators respond very fast to step changes in load
which makes them suitable for low voltage
microprocessor applications. The LP3962/LP3965 are
developed on a CMOS process which allows low
quiescent current operation independent of output
load current. This CMOS process also allows the
LP3962/LP3965 to operate under extremely low
dropout conditions.
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Ultra Low Dropout Voltage
Low Ground Pin Current
Load Regulation of 0.04%
15µA Quiescent Current in Shutdown Mode
Specified Output Current of 1.5A DC
Available in SOT-223,SFM/TO-263 and TO-220
Packages
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Output Voltage Accuracy ± 1.5%
Error Flag Indicates Output Status (LP3962)
Sense Option Improves Better Load
Regulation (LP3965)
Dropout Voltage: Ultra low dropout voltage; typically
38mV at 150mA load current and 380mV at 1.5A load
current.
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Extremely Low Output Capacitor
Requirements
Ground Pin Current: Typically 5mA at 1.5A load
current.
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Overtemperature/Overcurrent Protection
−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
voltage drops 10% below nominal value (for LP3962).
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Microprocessor Power Supplies
GTL, GTL+, BTL, and SSTL Bus Terminators
Power Supplies for DSPs
SCSI Terminator
SENSE: Sense pin improves regulation at remote
loads. (For LP3965)
Precision Output Voltage: Multiple output voltage
options are available ranging from 1.2V to 5.0V and
adjustable (LP3965), with a specified accuracy of
±1.5% at room temperature, and ±3.0% over all
conditions (varying line, load, and temperature).
Post Regulators
High Efficiency Linear Regulators
Battery Chargers
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.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2000–2013, Texas Instruments Incorporated