LTC1265
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LTC1265

1.2A, High Efficiency Step-Down DC/DC Converter

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Part Details
Part Models 8
1ku List Price Starting From $4.69
Features
  • High Efficiency: Up to 95%
  • Current Mode Operation for Excellent Line and Load Transient Response
  • Internal 0.3Ω Power Switch (VIN = 10V)
  • Short-Circuit Protection
  • Low Dropout Operation: 100% Duty Cycle
  • Low-Battery Detector
  • Low 160µA Standby Current at Light Loads
  • Active-High Micropower Shutdown: IQ < 15µA
  • Peak Inductor Current Independent of Inductor Value
  • Available in 14-pin SO Package
Additional Details
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The LTC1265 is a monolithic step-down current mode DC/DC converter featuring Burst Mode™ operation at low output current. The LTC1265 incorporates a 0.3Ω switch (VIN =10V) allowing up to 1.2A of output current.

Under no load condition, the converter draws only 160µA. In shutdown it typically draws a mere 5µA making this converter ideal for current sensitive applications. In dropout the internal P-channel MOSFET switch is turned on continuously maximizing the life of the battery source. The LTC1265 incorporates automatic power saving Burst Mode operation to reduce gate charge losses when the load currents drop below the level required for continuous operation.

The inductor current is user-programmable via an external current sense resistor. Operation up to 700kHz permits the use of small surface mount inductors and capacitors.

Applications

  • 5V to 3.3V Conversion
  • Distributed Power Systems
  • Step-Down Converters
  • Inverting Converters
  • Memory Backup Supply
  • Portable Instruments
  • Battery-Powered Equipment
  • Cellular Telephones
Part Models 8
1ku List Price Starting From $4.69

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC1265CS#PBF
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LTC1265CS#TRPBF
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LTC1265CS-3.3#PBF
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LTC1265CS-3.3#TRPBF
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LTC1265CS-5#PBF
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LTC1265CS-5#TRPBF
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LTC1265IS#PBF
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LTC1265IS#TRPBF
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Product Lifecycle

PCN

Oct 12, 2022

- 22_0251

Epoxy Change from Henkel 8290 to 8290A for 14-Lead SOIC Package

LTC1265CS#PBF

PRODUCTION

LTC1265CS#TRPBF

PRODUCTION

LTC1265CS-3.3#PBF

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LTC1265CS-3.3#TRPBF

PRODUCTION

LTC1265CS-5#PBF

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PRODUCTION

Aug 6, 2022

- 22_0173

Laser Top Mark Conversion for SOICN14 and SOICN16 Packages Assembled on ADPG [PNG]

LTC1265CS#PBF

PRODUCTION

LTC1265CS#TRPBF

PRODUCTION

LTC1265CS-3.3#PBF

PRODUCTION

LTC1265CS-3.3#TRPBF

PRODUCTION

LTC1265CS-5#PBF

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LTC1265CS-5#TRPBF

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LTC1265IS#PBF

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Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Oct 12, 2022

- 22_0251

arrow down

Epoxy Change from Henkel 8290 to 8290A for 14-Lead SOIC Package

LTC1265CS#PBF

PRODUCTION

LTC1265CS#TRPBF

PRODUCTION

LTC1265CS-3.3#PBF

PRODUCTION

LTC1265CS-3.3#TRPBF

PRODUCTION

LTC1265CS-5#PBF

PRODUCTION

LTC1265CS-5#TRPBF

PRODUCTION

LTC1265IS#PBF

PRODUCTION

LTC1265IS#TRPBF

PRODUCTION

Aug 6, 2022

- 22_0173

arrow down

Laser Top Mark Conversion for SOICN14 and SOICN16 Packages Assembled on ADPG [PNG]

LTC1265CS#PBF

PRODUCTION

LTC1265CS#TRPBF

PRODUCTION

LTC1265CS-3.3#PBF

PRODUCTION

LTC1265CS-3.3#TRPBF

PRODUCTION

LTC1265CS-5#PBF

PRODUCTION

LTC1265CS-5#TRPBF

PRODUCTION

LTC1265IS#PBF

PRODUCTION

LTC1265IS#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 3

DC074A-C

LTC1265CS | High Efficiency Switching Regulator, 5V @ 1A

DC074A-A

LTC1265CS | High Efficiency Switching Regulator, 2.5V @ 1A

DC074A-B

LTC1265CS | High Efficiency Switching Regulator, 3.3V @ 1A

Tools & Simulations

Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

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