LTC1430A
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LTC1430A

High Power Step-Down Switching Regulator Controller

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LTspice LTC1430A - Step-Down (Buck) Regulators Download 3.64 KB
Part Models 8
1ku List Price Starting From $4.42
Features
  • High Power 5V to 1.xV-3.xV Switching Controller: Can Exceed 10A Output
  • Maximum Duty Cycle > 90% Permits 3.3V to 2.xV Conversion Using a Low Power 5V Supply
  • All N-Channel External MOSFETs
  • Fixed Frequency Operation—Small L
  • Excellent Output Regulation: ±1% Over Line, Load and Temperature Variations
  • High Efficiency: Over 95% Possible
  • No Low Value Sense Resistor Needed
  • Outputs Can Drive External FETs with Up to 10,000pF Gate Capacitance
  • Quiescent Current: 350µA Typ, 1µA in Shutdown
  • Fast Transient Response
  • Adjustable or Fixed 3.3V Output
  • Available in 8-Lead SO and 16-Lead GN and SO Packages
Additional Details
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The LTC1430A is a high power, high efficiency switching regulator controller optimized for 5V to 1.xV-3.xV applications. It includes a precision internal reference and an internal feedback system that can provide output regulation of ±1% over temperature, load current and line voltage shifts. The LTC1430A uses a synchronous switching architecture with two N-channel output devices, eliminating the need for a high power, high cost P-channel device. Additionally, it senses output current across the drain-source resistance of the upper N-channel FET, providing an adjustable current limit without an external low value sense resistor.

The LTC1430A includes a fixed frequency PWM oscillator for low output ripple under virtually all operating conditions. The 200kHz free-running clock frequency can be externally adjusted from 100kHz to above 500kHz. The LTC1430A’s maximum duty cycle is typically 93.5% compared to 88% for the LTC1430. This permits 3.3V to 2.xV conversion using a low power 5V supply. The LTC1430A features low 350µA quiescent current, allowing greater than 90% efficiency operation in converter designs from 1A to greater than 50A output current. Shutdown mode drops the LTC1430A supply current to 1µA.

For new designs, refer to the LTC3830.

Applications

  • Power Supply for Pentium® II and AMD-K6® Microprocessors
  • High Power 5V to 3.xV Regulators
  • Local Regulation for Dual Voltage Logic Boards
  • Low Voltage, High Current Battery Regulation
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LTspice LTC1430A - Step-Down (Buck) Regulators Download 3.64 KB
Part Models 8
1ku List Price Starting From $4.42
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LTC1430A

Documentation

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Data Sheet

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UPDATED 08/24/2007
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LTC1430A: High Power Step-Down Switching Regulator Controller Data Sheet

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UPDATED 05/25/2005
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LTC1430A: 高電力降圧スイッチングレギュレータ・コントローラ データシート

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User Guide

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UPDATED 09/24/2009
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DC201A - Demo Manual redirect icon

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UPDATED 09/24/2009
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DC156A - Demo Manual redirect icon

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UPDATED 03/23/2018
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UPDATED 02/01/1999
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Documentation

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
LTC1430ACGN#PBF 16-Lead SSOP (Narrow 0.15 Inch) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTC1430ACGN#TRPBF 16-Lead SSOP (Narrow 0.15 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC1430ACS#PBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
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  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC1430ACS#TRPBF 16-Lead SOIC (Narrow 0.15 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC1430ACS8#PBF 8-Lead SOIC (Narrow 0.15 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC1430ACS8#TRPBF 8-Lead SOIC (Narrow 0.15 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC1430AIGN#PBF 16-Lead SSOP (Narrow 0.15 Inch) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC1430AIGN#TRPBF 16-Lead SSOP (Narrow 0.15 Inch) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link

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PCN

Oct 3, 2024

- 24_0235

(QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking

LTC1430ACGN#PBF

PRODUCTION

LTC1430ACGN#TRPBF

PRODUCTION

LTC1430AIGN#PBF

PRODUCTION

LTC1430AIGN#TRPBF

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PCN24_0235_Form

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Material_Report

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xlsm

Delta Qualification Matrix

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Oct 11, 2022

- 22_0235

Epoxy Change from Henkel 8290 to 8290A for GN Package

LTC1430ACGN#PBF

PRODUCTION

LTC1430ACGN#TRPBF

PRODUCTION

LTC1430AIGN#PBF

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LTC1430AIGN#TRPBF

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PCN22_0235_Form

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xls

Material_Report

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pdf

Qualification Results Summary

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xlsm

Delta Qualification Matrix

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Apr 6, 2022

- 22_0066

Laser Top Mark for 16QSOP Assembled in ADPG [PNG]

LTC1430ACGN#PBF

PRODUCTION

LTC1430ACGN#TRPBF

PRODUCTION

LTC1430AIGN#PBF

PRODUCTION

LTC1430AIGN#TRPBF

PRODUCTION

pdf

PCN22_0066_Form

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xls

Material_Report

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xlsm

Delta Qualification Matrix

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Oct 24, 2024

- 24_0246

Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package

LTC1430ACS#PBF

PRODUCTION

LTC1430ACS#TRPBF

PRODUCTION

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PCN24_0246_Form

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xls

Material_Report

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pdf

Marking Comparison

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Delta Qualification Matrix

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Oct 12, 2022

- 22_0252

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

LTC1430ACS#PBF

PRODUCTION

LTC1430ACS#TRPBF

PRODUCTION

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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

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

LTC1430ACS#PBF

PRODUCTION

LTC1430ACS#TRPBF

PRODUCTION

pdf

PCN22_0173_Form

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xls

Material_Report

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xlsm

Delta Qualification Matrix

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Dec 14, 2023

- 22_0255

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)

LTC1430ACS8#PBF

PRODUCTION

LTC1430ACS8#TRPBF

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PCN22_0255_Form

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xls

Material_Report

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pdf

Qualification Results Summary

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Delta Qualification Matrix

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Jun 16, 2021

- 21_0026

Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

LTC1430ACS8#PBF

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LTC1430ACS8#TRPBF

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PCN21_0026_Form

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PCN

Oct 3, 2024

- 24_0235

arrow down

(QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking

LTC1430ACGN#PBF

PRODUCTION

LTC1430ACGN#TRPBF

PRODUCTION

LTC1430AIGN#PBF

PRODUCTION

LTC1430AIGN#TRPBF

PRODUCTION

pdf

PCN24_0235_Form

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xls

Material_Report

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pdf

Other

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xlsm

Delta Qualification Matrix

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Oct 11, 2022

- 22_0235

arrow down

Epoxy Change from Henkel 8290 to 8290A for GN Package

LTC1430ACGN#PBF

PRODUCTION

LTC1430ACGN#TRPBF

PRODUCTION

LTC1430AIGN#PBF

PRODUCTION

LTC1430AIGN#TRPBF

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pdf

PCN22_0235_Form

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xls

Material_Report

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pdf

Qualification Results Summary

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xlsm

Delta Qualification Matrix

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Apr 6, 2022

- 22_0066

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Laser Top Mark for 16QSOP Assembled in ADPG [PNG]

LTC1430ACGN#PBF

PRODUCTION

LTC1430ACGN#TRPBF

PRODUCTION

LTC1430AIGN#PBF

PRODUCTION

LTC1430AIGN#TRPBF

PRODUCTION

pdf

PCN22_0066_Form

external-icon

xls

Material_Report

Download

xlsm

Delta Qualification Matrix

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Oct 24, 2024

- 24_0246

arrow down

Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package

LTC1430ACS#PBF

PRODUCTION

LTC1430ACS#TRPBF

PRODUCTION

pdf

PCN24_0246_Form

external-icon

xls

Material_Report

Download

pdf

Marking Comparison

external-icon

xlsm

Delta Qualification Matrix

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Oct 12, 2022

- 22_0252

arrow down

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

LTC1430ACS#PBF

PRODUCTION

LTC1430ACS#TRPBF

PRODUCTION

pdf

PCN22_0252_Form

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xls

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]

LTC1430ACS#PBF

PRODUCTION

LTC1430ACS#TRPBF

PRODUCTION

pdf

PCN22_0173_Form

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xls

Material_Report

Download

xlsm

Delta Qualification Matrix

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Dec 14, 2023

- 22_0255

arrow down

Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)

LTC1430ACS8#PBF

PRODUCTION

LTC1430ACS8#TRPBF

PRODUCTION

pdf

PCN22_0255_Form

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xls

Material_Report

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pdf

Qualification Results Summary

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xlsm

Delta Qualification Matrix

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Jun 16, 2021

- 21_0026

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Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM

LTC1430ACS8#PBF

PRODUCTION

LTC1430ACS8#TRPBF

PRODUCTION

pdf

PCN21_0026_Form

external-icon

xls

Material_Report

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xlsm

Delta Qualification Matrix

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Software & Part Ecosystem

Parts Product Life Cycle Description
LTC3830
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Cart

PRODUCTION

High Power Step-Down Synchronous DC/DC Controllers for Low Voltage Operation

Evaluation Kits 4

DC156A

LTC1430ACS | Low Cost CPU Supply, Jumper Select Output

DC091B

LTC1430ACS | DC/DC Converter, 5V input/ 3.3V Out @ 10A

DC153A

LTC1430ACS | DC-to-DC Converter 5V to 3.3V @ 6A, Long Life, Small Size

reference details image

DC201A

LTC1430ACS | Low Voltage 30 Amp Power Supply, 5VIN, 2.5VOUT @ 30A

Evaluation Kits4

DC156A

LTC1430ACS | Low Cost CPU Supply, Jumper Select Output

DC091B

LTC1430ACS | DC/DC Converter, 5V input/ 3.3V Out @ 10A

DC153A

LTC1430ACS | DC-to-DC Converter 5V to 3.3V @ 6A, Long Life, Small Size
evaluation kit item images

DC201A

LTC1430ACS | Low Voltage 30 Amp Power Supply, 5VIN, 2.5VOUT @ 30A

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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LTC1430A - Step-Down (Buck) Regulators Download

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