LP3965ET-3.3/NOPB National Semiconductor, LP3965ET-3.3/NOPB Datasheet

LP3965ET-3.3/NOPB

Manufacturer Part Number

LP3965ET-3.3/NOPB

Description

IC REGULATOR ULTR LDO TO-220-5

Manufacturer

National Semiconductor

Type

Regulatorr

Datasheets

1.LP3962EMP-3.3NOPB.pdf (22 pages)

2.LP3965ET-3.3NOPB.pdf (5 pages)

Specifications of LP3965ET-3.3/NOPB

Regulator Topology

Positive Fixed

Voltage - Output

3.3V

Voltage - Input

Up to 7V

Voltage - Dropout (typical)

0.38V @ 1.5A

Number Of Regulators

Current - Output

1.5A (Max)

Current - Limit (min)

Operating Temperature

-40°C ~ 125°C

Mounting Type

Through Hole

Package / Case

TO-220-5 (Bent and Staggered Leads)

Current, Output

1.5 ADC

Package Type

TO-220

Regulation, Line

0.06 %

Regulation, Load

0.09 %

Regulator Type

Linear, Low Dropout

Resistance, Thermal, Junction To Case

3 °C/W

Temperature, Operating, Range

-40 to +125 °C

Voltage, Dropout

380 mV

Voltage, Input

2.5 to 7 V

Voltage, Noise

150 μV

Voltage, Output

3.3 V

Voltage, Supply, Rejection Ratio

60 dB

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

*LP3965ET-3.3
*LP3965ET-3.3/NOPB
LP3965ET-3.3

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LP3962/LP3965

1.5A Fast Ultra Low Dropout Linear Regulators

General 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 de-

veloped 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.

Dropout Voltage: Ultra low dropout voltage; typically 38mV

at 150mA load current and 380mV at 1.5A load current.

Ground Pin Current: Typically 5mA at 1.5A load current.

Shutdown Mode: Typically 15µA quiescent current when

the shutdown pin is pulled low.

Error Flag: Error flag goes low when the output voltage

drops 10% below nominal value (for LP3962).

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 guaranteed accuracy of

temperature, and

load, and temperature).

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 applications

section for more information.

** See Application Hints.

3.0% over all conditions (varying line,

DS101266

1.5% at room

Features

n Ultra low dropout voltage

n Low ground pin current

n Load regulation of 0.04%

n 15µA quiescent current in shutdown mode

n Guaranteed output current of 1.5A DC

n Available in SOT-223,TO-263 and TO-220 packages

n Output voltage accuracy

n Error flag indicates output status (LP3962)

n Sense option improves better load regulation (LP3965)

n Extremely low output capacitor requirements

n Overtemperature/overcurrent protection

n −40˚C to +125˚C junction temperature range

Applications

n Microprocessor power supplies

n GTL, GTL+, BTL, and SSTL bus terminators

n Power supplies for DSPs

n SCSI terminator

n Post regulators

n High efficiency linear regulators

n Battery chargers

n Other battery powered applications

1.5%

10126601

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LP3965ET-3.3/NOPB Summary of contents

Page 1

... 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 applications section for more information. ** See Application Hints. © 2006 National Semiconductor Corporation Features n Ultra low dropout voltage n Low ground pin current n Load regulation of 0.04% n 15µ ...

Page 2

... TO220-5 TO220-5 TO220-5 TO220-5 6 Package Marking Supplied As: LP3965ES-2.5 Tape and Reel LP3965ES-1.8 Rail LP3965ES-1.8 Tape and Reel LP3965ES-ADJ Rail LP3965ES-ADJ Tape and Reel LP3962ET-5.0 Rail LP3962ET-3.3 Rail LP3962ET-2.5 Rail LP3962ET-1.8 Rail LP3965ET-5.0 Rail LP3965ET-3.3 Rail LP3965ET-2.5 Rail LP3965ET-1.8 Rail LP3965ET-ADJ Rail ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Storage Temperature Range Lead Temperature (Soldering, 5 sec.) ESD Rating (Note 3) Power Dissipation (Note 2) Input Supply Voltage (Survival) Shutdown Input Voltage (Survival) ...

Page 4

Electrical Characteristics LP3962/LP3965 (Continued) Limits in standard typeface are for T = 25˚C, and limits in boldface type apply over the full operating temperature range. J Unless otherwise specified O(NOM) Symbol Parameter T Turn-off delay dOFF ...

Page 5

Physical Dimensions inches (millimeters) unless otherwise noted TO220 5-lead, Molded, Stagger Bend Package (TO220-5) For Order Numbers, refer to the “Ordering Information” section of this document. NS Package Number T05D 20 ...

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