LTC3731H

PRODUCTION

3-Phase, 600kHz, Synchronous Buck Switching Regulator Controller

Data Sheet Product Selection Table

Part Models: 4
1ku List Price: Starting From $6.56

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Part Details

3-Phase Current Mode Controller with Onboard MOSFET Drivers
±5% Output Current Matching Optimizes Thermal Performance and Size of Inductors and MOSFETs
±2% V_REF Accuracy Over Temperature Up to 140°C
Reduced Power Supply Induced Noise
±10% Power Good Output Indicator
225kHz to 680kHz Per Phase, PLL, Fixed Frequency
PWM, Stage Shedding^™ or Burst Mode Operation
OPTI-LOOP Compensation Minimizes C_OUT
Adjustable Soft-Start Current Ramping
Short-Circuit Shutdown Timer with Defeat Option
Overvoltage Soft Latch
Adjustable Undervoltage Lockout Threshold
Selectable Phase Output for Up to 12-Phase Operation
Available in 36-Pin Narrow (0.209") SSOP and 5mm × 5mm QFN Packages

Part Models: 4
1ku List Price: Starting From $6.56

Documentation

Data Sheet 1

LTC3731H: 3-Phase, 600kHz, Synchronous Buck Switching Regulator Controller Data Sheet 05/25/2010

Reliability Data 1

R384 Reliability Data 03/26/2018

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
LTC3731HG#PBF	24-Lead SSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3731HG#TRPBF	24-Lead SSOP	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3731HUH#PBF	32-Lead QFN (5mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3731HUH#TRPBF	32-Lead QFN (5mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Nov 18, 2019 - 19_0266 Laser Top Mark for SSOP36/44/48 Packages assembled in ADPG and UTAC
		PCN19_0266_Form Material_Report Detailed Parts List
LTC3731HG#PBF	PRODUCTION
LTC3731HG#TRPBF	PRODUCTION
Jan 20, 2022 - 21_0269 Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products
		PCN21_0269_Form Material_Report Detailed Change Description Qualification Results Summary
LTC3731HUH#PBF	PRODUCTION
LTC3731HUH#TRPBF	PRODUCTION

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

Software Resources

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Hardware Ecosystem

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Power System Management (PSM) & Sequencers 1
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Protection Switches & Controllers 1
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Switching Regulators & Controllers 1
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Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

LTC3731
LTC3731H

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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