LTC3630A
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LTC3630A

High Efficiency, 76V 500mA Synchronous Step-Down Converter

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LTspice LTC3630A Demo Circuit - High Efficiency High Voltage Step-Down Converter (4-76V to 3.3V @ 500mA) Download 2.00KB LTspice LTC3630A - Step-Down (Buck) Regulators Download 1.3 KB
Part Models 20
1ku List Price Starting From $3.60
Features
  • Wide Operating Input Voltage Range: 4V to 76V
  • Synchronous Operation for Highest Efficiency
  • Internal High Side and Low Side Power MOSFETs
  • No Compensation Required
  • Adjustable 50mA to 500mA Maximum Output Current
  • Low Dropout Operation: 100% Duty Cycle
  • Low Quiescent Current: 12μA
  • Wide Output Range: 0.8V to VIN
  • 0.8V ±1% Feedback Voltage Reference
  • Precise RUN Pin Threshold
  • Internal and External Soft-Start
  • Programmable 1.8V, 3.3V, 5V or Adjustable Output
  • Few External Components Required
  • Low Profile (0.75mm) 3mm × 5mm DFN and Thermally-Enhanced MSE16 Packages
  • AEC-Q100 Qualified for Automotive Applications
Additional Details
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The LTC3630A is a high efficiency step-down DC/DC converter with internal high side and synchronous power switches that draws only 12μA typical DC supply current while maintaining a regulated output voltage at no load.

The LTC3630A can supply up to 500mA load current and features a programmable peak current limit that provides a simple method for optimizing efficiency and for reducing output ripple and component size. The LTC3630A’s combination of Burst Mode® operation, integrated power switches, low quiescent current, and programmable peak current limit provides high efficiency over a broad range of load currents.

With its wide input range of 4V to 76V, the LTC3630A is a robust converter suited for regulating a wide variety of power sources. A feedback comparator output enables multiple LTC3630As to be paralleled in higher current applications.

The LTC3630A is available in the thermally-enhanced 3mm × 5mm DFN and the MSE16 packages.

  Vin Range
LTC3630 4.5V to 65V
LTC3630A 4.5V to 76V

APPLICATIONS

  • Industrial Control Supplies
  • Medical Devices
  • Portable Instruments
  • Automotive
  • Avionics
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file View Data Sheet (Rev.D)
Documentation View All Documentation
LTspice LTC3630A Demo Circuit - High Efficiency High Voltage Step-Down Converter (4-76V to 3.3V @ 500mA) Download 2.00KB LTspice LTC3630A - Step-Down (Buck) Regulators Download 1.3 KB
Part Models 20
1ku List Price Starting From $3.60
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LTC3630A

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UPDATED 02/20/2014
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LTC3630A: High Efficiency, 76V 500mA Synchronous Step-Down Converter Data Sheet (Rev.D)

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UPDATED 04/21/2014
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LTC3630A: 高効率、76V、500mA同期整流式降圧コンバータ データシート

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UPDATED 03/26/2018
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Documentation

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
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LTC3630AMPDHC#PBF 16-Lead DFN (5mm x 3mm w/ EP) external-link
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Jul 31, 2020

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Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

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Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

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Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

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PCN20_0245_Form

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Material_Report

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Delta Qualification Matrix

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Other

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Qualification Results Summary

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Jun 5, 2024

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Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

LTC3630AEMSE#PBF

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LTC3630AEMSE#TRPBF

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LTC3630AHMSE#WPBF

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Feb 4, 2020

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Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC

LTC3630AEMSE#PBF

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LTC3630AEMSE#TRPBF

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LTC3630AHMSE#PBF

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LTC3630AHMSE#TRPBF

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LTC3630AIMSE#PBF

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Oct 11, 2022

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Epoxy Change from Henkel 8290 to 8290A for MSOP Package

LTC3630AHMSE#PBF

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LTC3630AHMSE#TRPBF

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LTC3630AIMSE#PBF

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Apr 18, 2022

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UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices

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LTC3630AHMSE#TRPBF

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LTC3630AIMSE#PBF

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PCN22_0050_Form

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Material_Report

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Jun 21, 2022

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Software & Part Ecosystem

Software & Part Ecosystem

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Evaluation Kit

Evaluation Kits 2

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DC1877A

LTC3630AEDHC Demo Board (DFN) | Sync Buck, 4V ≤ VIN ≤ 76V, VOUT = 5V/3.3V/1.8V/Adj @ 500mA

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DC1877A

LTC3630AEDHC Demo Board (DFN) | Sync Buck, 4V ≤ VIN ≤ 76V, VOUT = 5V/3.3V/1.8V/Adj @ 500mA

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DC1877A
LTC3630AEDHC Demo Board (DFN) | Sync Buck, 4V ≤ VIN ≤ 76V, VOUT = 5V/3.3V/1.8V/Adj @ 500mA
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Product Detail

Demonstration circuit 1877A is a 500mA output DC/DC power supply featuring the LTC3630A (DFN package), with 4V to 76V input range. The LTC3630A features high efficiency Burst Mode® operation and includes internal high and low side power switches. The board provides jumper selected output voltages of 1.8V, 3.3V, 5V and an option for additional voltages. LTC3630A has internal soft-start and a provision for increasing soft-start time.

Resources

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DC1877A - Design File Download

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DC1877A - Schematic Download

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DC1877A - Demo Manual Download

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DC2105A-A

LTC3630AEMSE Demo Board (MSOP) | 4V ≤ VIN ≤ 76V, VOUT = 1.8V/3.3V/5V/Adjustable @ 500mA

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DC2105A-A

LTC3630AEMSE Demo Board (MSOP) | 4V ≤ VIN ≤ 76V, VOUT = 1.8V/3.3V/5V/Adjustable @ 500mA

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DC2105A-A
LTC3630AEMSE Demo Board (MSOP) | 4V ≤ VIN ≤ 76V, VOUT = 1.8V/3.3V/5V/Adjustable @ 500mA
Buy Now View Details

Product Detail

Demonstration circuit 2105A is a 500mA output DC/DC power supply. There are two versions: DC2105A-A is a board featuring LTC3630A in the exposed pad MSOP-16 package, with 4V to 76V input range; DC2105A-B is a board featuring LTC3630, with 4V to 65V input range. The LTC3630A operates in a high efficiency Burst Mode® operation and includes internal high and low side switches. The board provides jumper selected output voltages of 1.8V, 3.3V, 5V and an option for additional voltages. LTC3630A has internal soft-start and a provision for increasing soft-start time.

Resources

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DC2105A - Design Files Download

2.00M

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DC2105A - Demo Manual Download

306.00K

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DC2105A - Schematic Download

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Evaluation Kits2

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DC1877A

LTC3630AEDHC Demo Board (DFN) | Sync Buck, 4V ≤ VIN ≤ 76V, VOUT = 5V/3.3V/1.8V/Adj @ 500mA
evaluation kit item images

DC2105A-A

LTC3630AEMSE Demo Board (MSOP) | 4V ≤ VIN ≤ 76V, VOUT = 1.8V/3.3V/5V/Adjustable @ 500mA
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.

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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LTC3630A Demo Circuit - High Efficiency High Voltage Step-Down Converter (4-76V to 3.3V @ 500mA) Download

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LTC3630A - Step-Down (Buck) Regulators Download

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