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Linear & low-dropout (LDO) regulators

LP3965

ACTIVE

1.5-A, low-dropout voltage regulator with sense & enable

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Data sheet

LP3965

ACTIVE
Data sheet Order now

Product details

Output options Adjustable Output, Fixed Output Iout (max) (A) 1.5 Vin (max) (V) 7 Vin (min) (V) 2.5 Vout (max) (V) 5 Vout (min) (V) 1.215 Fixed output options (V) 1.8, 2.5, 3.3 Rating Catalog Noise (µVrms) 150 PSRR at 100 KHz (dB) 32 Iq (typ) (mA) 4 Thermal resistance θJA (°C/W) 50 Load capacitance (min) (µF) 33 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 380 Operating temperature range (°C) -40 to 125
Output options Adjustable Output, Fixed Output Iout (max) (A) 1.5 Vin (max) (V) 7 Vin (min) (V) 2.5 Vout (max) (V) 5 Vout (min) (V) 1.215 Fixed output options (V) 1.8, 2.5, 3.3 Rating Catalog Noise (µVrms) 150 PSRR at 100 KHz (dB) 32 Iq (typ) (mA) 4 Thermal resistance θJA (°C/W) 50 Load capacitance (min) (µF) 33 Regulated outputs (#) 1 Features Enable, Power good Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 380 Operating temperature range (°C) -40 to 125
SOT-223 (NDC) 5 45.24 mm² 6.5 x 6.96 TO-220 (NDH) 5 86.0552 mm² 10.16 x 8.47 TO-263 (KTT) 5 154.8384 mm² 10.16 x 15.24
  • 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
  • Output Voltage Accuracy ± 1.5%
  • Error Flag Indicates Output Status (LP3962)
  • Sense Option Improves Better Load Regulation (LP3965)
  • Extremely Low Output Capacitor Requirements
  • Overtemperature/Overcurrent Protection
  • −40°C to +125°C Junction Temperature Range

All trademarks are the property of their respective owners.

  • 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
  • Output Voltage Accuracy ± 1.5%
  • Error Flag Indicates Output Status (LP3962)
  • Sense Option Improves Better Load Regulation (LP3965)
  • Extremely Low Output Capacitor Requirements
  • Overtemperature/Overcurrent Protection
  • −40°C to +125°C Junction Temperature Range

All trademarks are the property of their respective owners.

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.

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 specified accuracy of ±1.5% at room temperature, and ±3.0% over all conditions (varying line, load, and temperature).

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.

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 specified accuracy of ±1.5% at room temperature, and ±3.0% over all conditions (varying line, load, and temperature).
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Type Title Date
* Data sheet LP3962/LP3965 1.5A Fast Ultra Low Dropout Linear Regulators datasheet (Rev. H) 03 May 2013

Design & development

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Simulation model

LP3965_1P8 PSpice Transient Model

SNVMAT1.ZIP (66 KB) - PSpice Model
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Simulation model

LP3965_1P8 Unencrypted PSpice Transient Model

SNVMAT0.ZIP (3 KB) - PSpice Model
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Simulation model

LP3965_2P5 PSpice Transient Model

SNVMAS7.ZIP (69 KB) - PSpice Model
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Simulation model

LP3965_2P5 Unencrypted PSpice Transient Model

SNVMAS6.ZIP (3 KB) - PSpice Model
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Simulation model

LP3965_3P3 PSpice Transient Model

SNVMAS8.ZIP (68 KB) - PSpice Model
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Simulation model

LP3965_3P3 Unencrypted PSpice Transient Model

SNVMAS9.ZIP (3 KB) - PSpice Model
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Simulation model

LP3965_ADJ PSpice Transient Model

SNVMAT2.ZIP (83 KB) - PSpice Model
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Simulation model

LP3965_ADJ Unencrypted PSpice Transient Model

SNVMAS5.ZIP (3 KB) - PSpice Model
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Package Pins CAD symbols, footprints & 3D models
SOT-223 (NDC) 5 Ultra Librarian
TO-220 (NDH) 5 Ultra Librarian
TO-263 (KTT) 5 Ultra Librarian
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