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LP3965EMP-1.8/NOPB-LP3965EMP-2.5/NOPB-LP3965EMP-ADJ NOPB-LP3965ES-1.8/NOPB
1.5A Fast Ultra Low Dropout Linear Regulator 5-SOT-223 -40 to 125
LP3962, LP3965
www.ti.com SNVS066H –MAY 2000–REVISED APRIL 2013
LP3962/LP3965 1.5A Fast Ultra Low Dropout Linear Regulators
Checkfor Samples: LP3962, LP3965
1FEATURES DESCRIPTIONThe LP3962/LP3965 seriesof fast ultra low-dropout
Ultra Low Dropout Voltage linear regulators operate froma +2.5Vto +7.0V input
• Low Ground Pin Current supply. Wide rangeof preset output voltage options
Load Regulationof 0.04% are available. These ultra low dropout linear
regulators respond very fastto step changesin load
• 15µA Quiescent Currentin Shutdown Mode which makes them suitable for low voltage
• Specified Output Currentof 1.5A DC microprocessor applications. The LP3962/LP3965 are
• Availablein SOT-223,SFM/TO-263 and TO-220 developed ona 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) 38mVat 150mA load current and 380mVat 1.5A load
• Extremely Low Output Capacitor current.
Requirements Ground Pin Current: Typically 5mAat 1.5A load
• Overtemperature/Overcurrent Protection current.
−40°Cto +125°C Junction Temperature Range Shutdown Mode: Typically 15µA quiescent current
when the shutdown pinis 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 1.2Vto 5.0V and
High Efficiency Linear Regulators adjustable (LP3965), witha 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 high througha 10kΩ pull-up resistor. Connectifthis Hints sectionfor more information.
