LTC3632
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LTC3632

High Efficiency, High Voltage 20mA Synchronous Step-Down Converter

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LTspice LTC3632 - Step-Down (Buck) Regulators Download 1.05 KB LTspice LT3081/LT8612/LTC3632/LT3092 Demo Circuit - Constant Voltage, Constant Current Bench Supply (10-40V to 0-25V @ 0-3.1A) Download 9.00KB LTspice LTC3632 Demo Circuit - High Efficiency, High Voltage 20mA Synchronous Step Down Converter (4.5-50V to 5V @ 20mA) Download 2.00KB
Part Models 8
1ku List Price Starting From $2.95
Features
  • Wide Input Voltage Range: Operation from 4.5V to 50V
  • Overvoltage Lockout Provides Protection Up to 60V
  • Internal High Side and Low Side Power Switches
  • No Compensation Required
  • 20mA Output Current
  • Low Dropout Operation: 100% Duty Cycle
  • Low Quiescent Current: 12μA
  • Wide Output Voltage Range: 0.8V to VIN
  • 0.8V ±1% Feedback Voltage Reference
  • Adjustable Peak Current Limit
  • Internal and External Soft-Start
  • Precise RUN Pin Threshold with Adjustable Hysteresis
  • Few External Components Required
  • Low Profile (0.75mm) 3mm × 3mm DFN and Thermally Enhanced MS8E Packages
 
Additional Details
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The LTC3632 is a high efficiency, high voltage step-down DC/DC converter with internal high side and synchronous power switches that draws only 12μA typical DC supply current at no load while maintaining output voltage regulation.

The LTC3632 can supply up to 20mA load current and features a programmable peak current limit that provides simple method for optimizing efficiency in lower current applications. The LTC3632’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 4.5V to 50V input range and internal overvoltage monitor capable of protecting the part through 60V surges, the LTC3632 is a robust converter suited for regulating a wide variety of power sources. Additionally, the LTC3632 includes a precise run threshold and soft‑start feature to guarantee that the power system start-up is well-controlled in any environment.

The LTC3632 is available in the thermally enhanced 3mm × 3mm DFN and MS8E packages.

 

Applications

  • 4mA to 20mA Current Loops
  • Industrial Control Supplies
  • Distributed Power Systems
  • Portable Instruments
  • Battery-Operated Devices
  • Automotive Power Systems
 
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file View Data Sheet
Documentation View All Documentation
LTspice LTC3632 - Step-Down (Buck) Regulators Download 1.05 KB LTspice LT3081/LT8612/LTC3632/LT3092 Demo Circuit - Constant Voltage, Constant Current Bench Supply (10-40V to 0-25V @ 0-3.1A) Download 9.00KB LTspice LTC3632 Demo Circuit - High Efficiency, High Voltage 20mA Synchronous Step Down Converter (4.5-50V to 5V @ 20mA) Download 2.00KB
Part Models 8
1ku List Price Starting From $2.95
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LTC3632

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Data Sheet

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UPDATED 10/11/2010
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LTC3632: High Efficiency, High Voltage 20mA Synchronous Step-Down Converter Data Sheet

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UPDATED 03/04/2011
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LTC3632: 高効率、高電圧20mA 同期整流式降圧コンバータ データシート

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User Guide

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UPDATED 09/24/2009
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DC1507A - Demo Manual redirect icon

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Reliability Data

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UPDATED 03/26/2018
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R526 Reliability Data redirect icon

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UPDATED 07/01/2014
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High Performance Portable DC Bench Power Supply: Save Money and Free Up Bench Real Estate by Building Your Own redirect icon

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UPDATED 09/01/2009
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Robust DC/DC Step-Down Converter in 3mm × 3mm DFN Resists 60V Input Surges redirect icon

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Documentation

Technical Documents 5
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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
LTC3632EDD#PBF 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTC3632EDD#TRPBF 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTC3632EMS8E#PBF 8-Lead MSOP w/ EP external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTC3632EMS8E#TRPBF 8-Lead MSOP w/ EP external-link
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  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC3632IDD#PBF 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC3632IDD#TRPBF 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP) external-link
  • HTML
  • Material Declaration external-link
  • HTML
  • Reliablity Data external-link
LTC3632IMS8E#PBF 8-Lead MSOP w/ EP external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTC3632IMS8E#TRPBF 8-Lead MSOP w/ EP external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link

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Product Lifecycle

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Dec 28, 2020

- 20_0245

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

LTC3632EDD#PBF

PRODUCTION

LTC3632EDD#TRPBF

PRODUCTION

LTC3632EMS8E#PBF

PRODUCTION

LTC3632EMS8E#TRPBF

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LTC3632IDD#PBF

PRODUCTION

LTC3632IDD#TRPBF

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LTC3632IMS8E#PBF

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LTC3632IMS8E#TRPBF

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PCN20_0245_Form

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Material_Report

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Delta Qualification Matrix

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Qualification Results Summary

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Oct 11, 2022

- 22_0244

Epoxy Change from Henkel 8290 to 8290A for MSOP Package

LTC3632EMS8E#PBF

PRODUCTION

LTC3632EMS8E#TRPBF

PRODUCTION

LTC3632IMS8E#PBF

PRODUCTION

LTC3632IMS8E#TRPBF

PRODUCTION

pdf

PCN22_0244_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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Feb 3, 2020

- 20_0128

Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC

LTC3632EMS8E#PBF

PRODUCTION

LTC3632EMS8E#TRPBF

PRODUCTION

LTC3632IMS8E#PBF

PRODUCTION

LTC3632IMS8E#TRPBF

PRODUCTION

pdf

PCN20_0128_Form

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Material_Report

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PCN

Dec 28, 2020

- 20_0245

arrow down

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

LTC3632EDD#PBF

PRODUCTION

LTC3632EDD#TRPBF

PRODUCTION

LTC3632EMS8E#PBF

PRODUCTION

LTC3632EMS8E#TRPBF

PRODUCTION

LTC3632IDD#PBF

PRODUCTION

LTC3632IDD#TRPBF

PRODUCTION

LTC3632IMS8E#PBF

PRODUCTION

LTC3632IMS8E#TRPBF

PRODUCTION

pdf

PCN20_0245_Form

external-icon

xls

Material_Report

Download

xlsm

Delta Qualification Matrix

Download

pdf

Other

external-icon

pdf

Qualification Results Summary

external-icon
Oct 11, 2022

- 22_0244

arrow down

Epoxy Change from Henkel 8290 to 8290A for MSOP Package

LTC3632EMS8E#PBF

PRODUCTION

LTC3632EMS8E#TRPBF

PRODUCTION

LTC3632IMS8E#PBF

PRODUCTION

LTC3632IMS8E#TRPBF

PRODUCTION

pdf

PCN22_0244_Form

external-icon

xls

Material_Report

Download

pdf

Qualification Results Summary

external-icon

xlsm

Delta Qualification Matrix

Download
Feb 3, 2020

- 20_0128

arrow down

Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC

LTC3632EMS8E#PBF

PRODUCTION

LTC3632EMS8E#TRPBF

PRODUCTION

LTC3632IMS8E#PBF

PRODUCTION

LTC3632IMS8E#TRPBF

PRODUCTION

pdf

PCN20_0128_Form

external-icon

xls

Material_Report

Download

Software & Part Ecosystem

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Evaluation Kits 1

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DC1507A

LTC3632EDD Demo Board | 60V Transients, 4.5V ≤ VIN ≤ 50V, VOUT = 1.8V/3.3V/5V @ 20mA

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DC1507A

LTC3632EDD Demo Board | 60V Transients, 4.5V ≤ VIN ≤ 50V, VOUT = 1.8V/3.3V/5V @ 20mA

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DC1507A
LTC3632EDD Demo Board | 60V Transients, 4.5V ≤ VIN ≤ 50V, VOUT = 1.8V/3.3V/5V @ 20mA
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Product Detail

Demonstration circuit 1507A is a high efficiency step-down DC/DC converter featuring LTC3632EDD with internal high side and synchronous power switches that draws only 12µA quiescent current. It has a wide 4.5V to 50V input range and internal over voltage monitor capable of protecting the part through 60V surges. The jumper selectable outputs are 1.8V, 3.3V and 5V. LTC3632EDD can supply up to 20mA load current with a programmable peak current limit that provides a simple method for optimizing efficiency in lower current applications.

Resources

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DC1507A - Schematic Download

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DC1507A - Design File Download

608.00K

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DC1507A - Demo Manual Download

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Evaluation Kits1

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DC1507A

LTC3632EDD Demo Board | 60V Transients, 4.5V ≤ VIN ≤ 50V, VOUT = 1.8V/3.3V/5V @ 20mA

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.

spice tool Lt Spice

LTC3632 - Step-Down (Buck) Regulators Download

1.05 K

spice tool Lt Spice

LT3081/LT8612/LTC3632/LT3092 Demo Circuit - Constant Voltage, Constant Current Bench Supply (10-40V to 0-25V @ 0-3.1A) Download

9.00K

spice tool Lt Spice

LTC3632 Demo Circuit - High Efficiency, High Voltage 20mA Synchronous Step Down Converter (4.5-50V to 5V @ 20mA) Download

2.00K

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