LTC3630

RECOMMENDED FOR NEW DESIGNS

High Efficiency, 65V 500mA Synchronous Step-Down Converter

Part Models: 16
1ku List Price: Starting From $3.84

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Part Details

Wide Operating Input Voltage Range: 4V to 65V
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 V_IN
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

The LTC3630 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 LTC3630 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 LTC3630’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 65V, the LTC3630 is a robust converter suited for regulating a wide variety of power sources. Additionally, the LTC3630 includes a precise run threshold and soft-start feature to guarantee that the power system start-up is well-controlled in any environment. A feedback comparator output enables multiple LTC3630s to be paralleled in higher current applications.

The LTC3630 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
Distributed Power Systems
Portable Instruments
Battery-Operated Devices
Automotive
Avionics

Part Models: 16
1ku List Price: Starting From $3.84

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
LTC3630EDHC#PBF	16-Lead DFN (5mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3630EDHC#TRPBF	16-Lead DFN (5mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3630EMSE#PBF	16(12)-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3630EMSE#TRPBF	16(12)-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3630HDHC#PBF	16-Lead DFN (5mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3630HDHC#TRPBF	16-Lead DFN (5mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3630HMSE#PBF	16(12)-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3630HMSE#TRPBF	16(12)-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3630IDHC#PBF	16-Lead DFN (5mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3630IDHC#TRPBF	16-Lead DFN (5mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3630IMSE#PBF	16(12)-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3630IMSE#TRPBF	16(12)-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3630MPDHC#PBF	16-Lead DFN (5mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3630MPDHC#TRPBF	16-Lead DFN (5mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3630MPMSE#PBF	16(12)-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3630MPMSE#TRPBF	16(12)-Lead MSOP w/ EP	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jul 31, 2020 - 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
LTC3630EDHC#PBF	PRODUCTION
LTC3630EDHC#TRPBF	PRODUCTION
LTC3630EMSE#PBF	PRODUCTION
LTC3630EMSE#TRPBF	PRODUCTION
LTC3630HDHC#PBF	PRODUCTION
LTC3630HDHC#TRPBF	PRODUCTION
LTC3630HMSE#PBF	PRODUCTION
LTC3630HMSE#TRPBF	PRODUCTION
LTC3630IDHC#PBF	PRODUCTION
LTC3630IDHC#TRPBF	PRODUCTION
LTC3630IMSE#PBF	PRODUCTION
LTC3630IMSE#TRPBF	PRODUCTION
LTC3630MPDHC#PBF	PRODUCTION
LTC3630MPDHC#TRPBF	PRODUCTION
LTC3630MPMSE#PBF	PRODUCTION
LTC3630MPMSE#TRPBF	PRODUCTION
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)
		PCN24_0003_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC3630EMSE#PBF	PRODUCTION
LTC3630EMSE#TRPBF	PRODUCTION
LTC3630IMSE#PBF	PRODUCTION
LTC3630IMSE#TRPBF	PRODUCTION
LTC3630MPMSE#PBF	PRODUCTION
LTC3630MPMSE#TRPBF	PRODUCTION
Feb 4, 2020 - 20_0129 Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0129_Form Material_Report
LTC3630EMSE#PBF	PRODUCTION
LTC3630EMSE#TRPBF	PRODUCTION
LTC3630HMSE#PBF	PRODUCTION
LTC3630HMSE#TRPBF	PRODUCTION
LTC3630IMSE#PBF	PRODUCTION
LTC3630IMSE#TRPBF	PRODUCTION
LTC3630MPMSE#PBF	PRODUCTION
LTC3630MPMSE#TRPBF	PRODUCTION
Oct 11, 2022 - 22_0244 Epoxy Change from Henkel 8290 to 8290A for MSOP Package
		PCN22_0244_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC3630HMSE#PBF	PRODUCTION
LTC3630HMSE#TRPBF	PRODUCTION
Apr 18, 2022 - 22_0050 UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices
		PCN22_0050_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC3630HMSE#PBF	PRODUCTION
LTC3630HMSE#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Circuit Monitors 1
LTC2960	RECOMMENDED FOR NEW DESIGNS	36V Nano-Current Two-Input Voltage Monitor
Protection Switches & Controllers 2
LTC4359	RECOMMENDED FOR NEW DESIGNS	Ideal Diode Controller with Reverse Input Protection
LTC4365	RECOMMENDED FOR NEW DESIGNS	Overvoltage, Undervoltage and Reverse Supply Protection Controller
Switching Regulators & Controllers 1
LTC3880	RECOMMENDED FOR NEW DESIGNS	Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management

Tools & Simulations

LTspice 3

Models for the following parts are available in LTspice:

LTC3630
LTC3630A

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.

Evaluation Kits

LTC3630EMSE Demo Board | 4V ≤ VIN ≤ 65V, VOUT = 1.8V/3.3V/5V/Adjustable @ 500mA

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Product Details

Demonstration circuit 2105A is a 500mA output DC/DC power supply. There are two versions: DC2105A-A is a board featuring LTC3630A, with 4V to 76V input range; DC2105A-B is a board featuring LTC3630, with 4V to 65V input range. The LTC3630 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. LTC3630 has internal soft-start and a provision for increasing soft-start time.

Resources

DC2105A - Design Files
8/1/2013

DC2105A - Demo Manual
8/1/2013

DC2105A - Schematic
8/13/2013

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Part Details

Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Design Note 1

Technical Articles 2