LTC1266
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LTC1266

Synchronous Regulator Controller for N- or P-Channel MOSFETs

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LTspice LTC1266 - Step-Down (Buck) Regulators Download 3.33 KB
Part Models 16
1ku List Price Starting From $5.00
Features
  • Ultrahigh Efficiency: Over 95% Possible
  • Drives N-Channel MOSFET for High Current or P-Channel MOSFET for Low Dropout
  • Pin Selectable Burst Mode Operation
  • 1% Output Accuracy (LTC1266A)
  • Pin Selectable Phase of Topside Driver for Boost or Step-Down Operation
  • Wide VIN Range: 3.5V to 20V
  • On-Chip Low-Battery Detector
  • High Efficiency Maintained Over Large Current Range
  • Low 170µA Standby Current at Light Loads
  • Current Mode Operation for Excellent Line and Load Transient Response
  • Logic Controlled Micropower Shutdown: IQ < 40µA
  • Short-Circuit Protection
  • Synchronous Switching with Nonoverlaping Gate Drives
  • Available in 16-Pin Narrow SO Package
Additional Details
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The LTC1266 series is a family of synchronous switching regulator controllers featuring automatic Burst Mode™ operation to maintain high efficiencies at low output currents. These devices drive external power MOSFETs at switching frequencies up to 400kHz using a constant off-time current mode architecture providing constant ripple current in the inductor. They can drive either an N-channel or a P-channel topside MOSFET.

The operating current level is user-programmable via an external current sense resistor. Wide input supply range allows operation from 3.5V to 18V (20V maximum). Constant off-time architecture provides low dropout regulation limited only by the RDS(ON) of the topside MOSFET (when using the P-channel) and the resistance of the inductor and current sense resistor.

The LTC1266 series combines synchronous switching for maximum efficiency at high currents with an automatic low current operating mode, called Burst Mode operation, which reduces switching losses. Standby power is reduced to only 1mW at VIN = 5V (at IOUT = 0). Load currents in Burst Mode operation are typically 0mA to 500mA.

Applications

  • Notebook and Palmtop Computers
  • Portable Instruments
  • Cellular Telephones
  • DC Power Distribution Systems
  • GPS Systems
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LTspice LTC1266 - Step-Down (Buck) Regulators Download 3.33 KB
Part Models 16
1ku List Price Starting From $5.00
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LTC1266

Documentation

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Data Sheet

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UPDATED 08/29/2007
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LTC1266: Synchronous Regulator Controller for N- or P-Channel MOSFETs Data Sheet

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UPDATED 02/21/2008
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LTC1266: NまたはPチャネルMOSFET用 同期レギュレータ・コントローラ データシート

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Reliability Data

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UPDATED 03/22/2018
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R245 Reliability Data redirect icon

21.11 K

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Application Note

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UPDATED 08/20/2007
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AN84 - Linear Technology Magazine Circuit Collection, Volume IV redirect icon

2.00M

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UPDATED 08/20/2007
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AN66 - Linear Technology Magazine Circuit Collection, Volume II redirect icon

1.00M

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UPDATED 08/27/2009
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AN63 - Power for Pentium Processors; Meeting VRE Requirements redirect icon

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User Guide

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UPDATED 09/25/2009
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DC064B - Demo Manual redirect icon

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Design Note

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UPDATED 11/01/1994
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Design Note 91: 5V to 3.3V Circuit Collection redirect icon

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UPDATED 05/01/1995
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Design Note 103: New LTC1266 Switching Regulator Provides High Efficiency at 10A Loads redirect icon

Technical Articles

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UPDATED 05/01/1998
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Bootstrapped Synchronous Boost Converter Operates at 1.8V Input redirect icon

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Documentation

Technical Documents 9
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Data Sheet 1

LTC1266: Synchronous Regulator Controller for N- or P-Channel MOSFETs Data Sheet

Reliability Data 1

R245 Reliability Data

User Guide 1

DC064B - Demo Manual

Application Note 3

AN84 - Linear Technology Magazine Circuit Collection, Volume IV
AN66 - Linear Technology Magazine Circuit Collection, Volume II
AN63 - Power for Pentium Processors; Meeting VRE Requirements

Design Note 2

Design Note 91: 5V to 3.3V Circuit Collection
Design Note 103: New LTC1266 Switching Regulator Provides High Efficiency at 10A Loads

Technical Articles 1

Bootstrapped Synchronous Boost Converter Operates at 1.8V Input

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC1266ACS#PBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
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LTC1266ACS#TRPBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
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LTC1266AIS#PBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
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LTC1266AIS#TRPBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
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LTC1266CS#PBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
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LTC1266CS#TRPBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
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LTC1266CS-3.3#PBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
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LTC1266CS-3.3#TRPBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
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LTC1266CS-5#PBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
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LTC1266CS-5#TRPBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
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LTC1266IS#PBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
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LTC1266IS#TRPBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
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LTC1266IS-3.3#PBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
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LTC1266IS-3.3#TRPBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
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LTC1266IS-5#PBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
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LTC1266IS-5#TRPBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
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Oct 12, 2022

- 22_0252

Epoxy Change from Henkel 8290 to 8290A for 16-Lead SOIC Package

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Qualification Results Summary

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Aug 6, 2022

- 22_0173

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

LTC1266ACS#PBF

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Epoxy Change from Henkel 8290 to 8290A for 16-Lead SOIC Package

LTC1266ACS#PBF

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LTC1266ACS#TRPBF

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LTC1266AIS#PBF

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PCN22_0252_Form

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Material_Report

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pdf

Qualification Results Summary

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Aug 6, 2022

- 22_0173

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

LTC1266ACS#PBF

PRODUCTION

LTC1266ACS#TRPBF

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LTC1266AIS#PBF

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LTC1266AIS#TRPBF

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PCN22_0173_Form

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Material_Report

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Delta Qualification Matrix

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Software & Part Ecosystem

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.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

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LTC1266 - Step-Down (Buck) Regulators Download

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