LTC3631

PRODUCTION

High Efficiency, High Voltage 100mA Synchronous Step-Down Converter

Part Models: 24
1ku List Price: Starting From $3.54

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Part Details

Wide Input Voltage Range: Operation from 4.5V to 45V
Overvoltage Lockout Provides Protection Up to 60V
Internal High Side and Low Side Power Switches
No Compensation Required
100mA Output Current
Low Dropout Operation: 100% Duty Cycle
Low Quiescent Current: 12μA
0.8V ±1% Feedback Voltage Reference
Adjustable Peak Current Limit
Internal and External Soft-Start
Precise RUN Pin Threshold with Adjustable Hysteresis
3.3V, 5V and Adjustable Output Versions
Only Three External Components Required for Fixed Output Versions
Low Profile (0.75mm) 3mm × 3mm DFN and Thermally-Enhanced MS8E Packages

Part Models: 24
1ku List Price: Starting From $3.54

Documentation

Reliability Data 1

R526 Reliability Data 03/26/2018

Technical Articles 1

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

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
LTC3631EDD#PBF	8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3631EDD#TRPBF	8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3631EDD-3.3#PBF	8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3631EDD-3.3#TRPBF	8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3631EDD-5#PBF	8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3631EDD-5#TRPBF	8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3631EMS8E#PBF	8-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3631EMS8E#TRPBF	8-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3631EMS8E-3.3#PBF	8-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3631EMS8E-3.3#TRPBF	8-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3631EMS8E-5#PBF	8-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3631EMS8E-5#TRPBF	8-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3631IDD#PBF	8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3631IDD#TRPBF	8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3631IDD-3.3#PBF	8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3631IDD-3.3#TRPBF	8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3631IDD-5#PBF	8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3631IDD-5#TRPBF	8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3631IMS8E#PBF	8-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3631IMS8E#TRPBF	8-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3631IMS8E-3.3#PBF	8-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3631IMS8E-3.3#TRPBF	8-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3631IMS8E-5#PBF	8-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3631IMS8E-5#TRPBF	8-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jul 28, 2021 - 20_0245 Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)
		PCN20_0245_Form Material_Report Delta Qualification Matrix Other Qualification Results Summary
LTC3631EDD#PBF	PRODUCTION
LTC3631EDD#TRPBF	PRODUCTION
LTC3631EDD-3.3#PBF	PRODUCTION
LTC3631EDD-3.3#TRPBF	PRODUCTION
LTC3631EMS8E#PBF	PRODUCTION
LTC3631EMS8E#TRPBF	PRODUCTION
LTC3631EMS8E-3.3#PBF	PRODUCTION
LTC3631EMS8E-3.3#TRPBF	PRODUCTION
LTC3631IDD#PBF	PRODUCTION
LTC3631IDD#TRPBF	PRODUCTION
LTC3631IDD-3.3#PBF	PRODUCTION
LTC3631IDD-3.3#TRPBF	PRODUCTION
LTC3631IMS8E#PBF	PRODUCTION
LTC3631IMS8E#TRPBF	PRODUCTION
LTC3631IMS8E-3.3#PBF	PRODUCTION
LTC3631IMS8E-3.3#TRPBF	PRODUCTION
Nov 8, 2021 - 20_0245 Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)
		PCN20_0245_Form Material_Report Delta Qualification Matrix Other Qualification Results Summary
LTC3631EDD-5#PBF	PRODUCTION
LTC3631EDD-5#TRPBF	PRODUCTION
LTC3631EMS8E-5#PBF	PRODUCTION
LTC3631EMS8E-5#TRPBF	PRODUCTION
LTC3631IDD-5#PBF	PRODUCTION
LTC3631IDD-5#TRPBF	PRODUCTION
LTC3631IMS8E-5#PBF	PRODUCTION
LTC3631IMS8E-5#TRPBF	PRODUCTION
Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0128_Form Material_Report
LTC3631EMS8E#PBF	PRODUCTION
LTC3631EMS8E#TRPBF	PRODUCTION
LTC3631EMS8E-3.3#PBF	PRODUCTION
LTC3631EMS8E-3.3#TRPBF	PRODUCTION
LTC3631EMS8E-5#PBF	PRODUCTION
LTC3631EMS8E-5#TRPBF	PRODUCTION
LTC3631IMS8E#PBF	PRODUCTION
LTC3631IMS8E#TRPBF	PRODUCTION
LTC3631IMS8E-3.3#PBF	PRODUCTION
LTC3631IMS8E-3.3#TRPBF	PRODUCTION
LTC3631IMS8E-5#PBF	PRODUCTION
LTC3631IMS8E-5#TRPBF	PRODUCTION

Hardware Ecosystem

Parts	Product Life Cycle	Description
Analog to Digital Converters 1
LTC2991	RECOMMENDED FOR NEW DESIGNS	Octal I²C Voltage, Current, and Temperature Monitor
Circuit Monitors 1
LTC2960	RECOMMENDED FOR NEW DESIGNS	36V Nano-Current Two-Input Voltage Monitor
Oscillators 1
LTC6991	PRODUCTION	TimerBlox: Resettable, Low Frequency Oscillator
Protection Switches & Controllers 1
LTC4359	RECOMMENDED FOR NEW DESIGNS	Ideal Diode Controller with Reverse Input Protection

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LTC3631
LTC3631-3.3
LTC3631-5

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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