LTC1430A
Info: : PRODUCTION
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LTC1430A

High Power Step-Down Switching Regulator Controller

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
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
Part Models 8
1ku List Price Starting From $4.42

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

PCN

Oct 11, 2022

- 22_0235

Epoxy Change from Henkel 8290 to 8290A for GN Package

LTC1430ACGN#PBF

PRODUCTION

LTC1430ACGN#TRPBF

PRODUCTION

LTC1430AIGN#PBF

PRODUCTION

LTC1430AIGN#TRPBF

PRODUCTION

Apr 6, 2022

- 22_0066

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

LTC1430ACGN#PBF

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LTC1430ACGN#TRPBF

PRODUCTION

LTC1430AIGN#PBF

PRODUCTION

LTC1430AIGN#TRPBF

PRODUCTION

Oct 12, 2022

- 22_0252

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

LTC1430ACS#PBF

PRODUCTION

LTC1430ACS#TRPBF

PRODUCTION

Aug 6, 2022

- 22_0173

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

LTC1430ACS#PBF

PRODUCTION

LTC1430ACS#TRPBF

PRODUCTION

Dec 14, 2023

- 22_0255

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

Jun 16, 2021

- 21_0026

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

LTC1430ACS8#PBF

PRODUCTION

LTC1430ACS8#TRPBF

PRODUCTION

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Part Models

Product Lifecycle

PCN

Oct 11, 2022

- 22_0235

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Epoxy Change from Henkel 8290 to 8290A for GN Package

LTC1430ACGN#PBF

PRODUCTION

LTC1430ACGN#TRPBF

PRODUCTION

LTC1430AIGN#PBF

PRODUCTION

LTC1430AIGN#TRPBF

PRODUCTION

Apr 6, 2022

- 22_0066

arrow down

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

LTC1430ACGN#PBF

PRODUCTION

LTC1430ACGN#TRPBF

PRODUCTION

LTC1430AIGN#PBF

PRODUCTION

LTC1430AIGN#TRPBF

PRODUCTION

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

Aug 6, 2022

- 22_0173

arrow down

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

LTC1430ACS#PBF

PRODUCTION

LTC1430ACS#TRPBF

PRODUCTION

Dec 14, 2023

- 22_0255

arrow down

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

Jun 16, 2021

- 21_0026

arrow down

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

LTC1430ACS8#PBF

PRODUCTION

LTC1430ACS8#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

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

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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