LTC3726

NOT RECOMMENDED FOR NEW DESIGNS

Secondary-Side Synchronous Forward Controller

Data Sheet Product Selection Table

Part Models: 4
1ku List Price: Starting From $3.83

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Part Details

Secondary-Side Control for Fast Transient Response
Self-Starting Architecture Eliminates Need for Separate Bias Regulator
Proprietary Gate Drive Encoding Scheme Reduces System Complexity
Current Mode Control Ensures Current Sharing
PLL Fixed Frequency: 100kHz to 500kHz
±1% Output Voltage Accuracy
OPTI-LOOP Compensation
Available in a Narrow 16-Lead SSOP Package

Part Models: 4
1ku List Price: Starting From $3.83

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
LTC3726EGN#PBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3726EGN#TRPBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3726IGN#PBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3726IGN#TRPBF	16-Lead SSOP (Narrow 0.15 Inch)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 3, 2024 - 24_0235 (QSOP/SSOP PKG) Migrating Bottom Trace Code Marking to Top Side Laser Marking
		PCN24_0235_Form Material_Report Other Delta Qualification Matrix
LTC3726EGN#PBF	PRODUCTION
LTC3726EGN#TRPBF	PRODUCTION
LTC3726IGN#PBF	PRODUCTION
LTC3726IGN#TRPBF	PRODUCTION
Oct 11, 2022 - 22_0235 Epoxy Change from Henkel 8290 to 8290A for GN Package
		PCN22_0235_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC3726EGN#PBF	PRODUCTION
LTC3726EGN#TRPBF	PRODUCTION
LTC3726IGN#PBF	PRODUCTION
LTC3726IGN#TRPBF	PRODUCTION
Apr 6, 2022 - 22_0066 Laser Top Mark for 16QSOP Assembled in ADPG [PNG]
		PCN22_0066_Form Material_Report Delta Qualification Matrix
LTC3726EGN#PBF	PRODUCTION
LTC3726EGN#TRPBF	PRODUCTION
LTC3726IGN#PBF	PRODUCTION
LTC3726IGN#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
LTC3766	RECOMMENDED FOR NEW DESIGNS	High Efficiency, Secondary-Side Synchronous Forward Controller

Tools & Simulations

LTspice 1

LTC3726 - Switching Regulators

Models for the following parts are available in LTspice:

LTC3726

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

LTC3725EMSE/LTC3726EGN Demo Board | Single-Switch Forward Converter, 36V ≤ VIN ≤ 72V, VOUT = 3.3V @ 20A

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Product Details

Demonstration circuit 1031A-B is a 36V-72Vin, synchronous forward converter featuring the LTC3725 forward converter and the LTC3726 secondary-side controller. This circuit was designed specifically to attain a high current, low ripple, synchronously rectified forward converter to efficiently power 3.3V loads at up to 20A from a typical telecom input voltage range. This circuit features secondary side control of the supply eliminating the need for an optocoupler.

Resources

DC1031A-B - Design File
1.00M

DC1031A-B - Demo Manual
534.00K

DC1031A-B - Schematic
40.00K

LTC3725EMSE/LTC3726EGN Demo Board | Single-Switch Forward Converter, 36V ≤ VIN ≤ 72V, VOUT = 2.5V @ 20A

Buy Now View Details

Product Details

Demonstration circuit 1031A-A is a 36V-72Vin, synchronous forward converter featuring the LTC3725 forward converter and the LTC3726 secondary-side controller. This circuit was designed specifically to attain a high current, low ripple, synchronously rectified forward converter to efficiently power 2.5V loads at up to 20A from a typical telecom input voltage range. This circuit features secondary side control of the supply eliminating the need for an optocoupler.

Resources

DC1031A-A - Demo Manual
533.00K

DC1031A-A - Schematic
40.00K

DC1031A-A - Design File
1.00M

LTC3725EMSE/LTC3726EGN 1/4 Brick | 9V < VIN < 36V, VOUT: 15V/6.7A

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Product Details

DC1300A-C: Demo Board for:

LTC3725 - Single-Switch Forward Controller and Gate Driver
LTC3726 - Secondary-Side Synchronous Forward Controller

Resources

DC1300A-C - Design File
1.00M

DC1300A-C - Schematic
34.00K

DC1300A-C - Demo Manual
663.00K

LTC3725EMSE/LTC3726EGN 1/4 Brick | 9V < VIN < 36V, VOUT: 12V/8.4A

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Product Details

DC1300A-B: Demo Board for:

LTC3725 - Single-Switch Forward Controller and Gate Driver
LTC3726 - Secondary-Side Synchronous Forward Controller

Resources

DC1300A-B - Design File
1.00M

DC1300A-B - Schematic
34.00K

DC1300A-B - Demo Manual
695.00K

LTC3725EMSE/LTC3726EGN 1/8 Brick | 9V < VIN < 36V, VOUT: 12V/4A

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Product Details

DC1174A-B: Demo Board for the LTC3725 Single-Switch Forward Controller and Gate Driver and LTC3726 Secondary-Side Synchronous Forward Controller

Resources

DC1174B - Demo Manual
412.00K

DC1174A-B - Design Files
924.00K

DC1174A-B - Schematic
30.00K

LTC3725EMSE/LTC3726EGN 1/4 Brick | 9V < VIN < 36V, VOUT: 5.0V/20A

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Product Details

DC1300A-A: Demo Board for:

LTC3725 - Single-Switch Forward Controller and Gate Driver
LTC3726 - Secondary-Side Synchronous Forward Controller

Resources

DC1300A-A - Design File
1.00M

DC1300A-A - Schematic
34.00K

DC1300A-A - Demo Manual
719.00K

LTC3725EMSE/LTC3726EGN Demo Board | Single-Switch Forward Converter, 36V ≤ VIN ≤ 72V, VOUT = 5V @ 20A

Buy Now View Details

Product Details

Demonstration circuit 1031A-C is a 36V-72Vin, synchronous forward converter featuring the LTC3725 forward converter and the LTC3726 secondary-side controller. This circuit was designed specifically to attain a high current, low ripple, synchronously rectified forward converter to efficiently power 5V loads at up to 20A from a typical telecom input voltage range. This circuit features secondary side control of the supply eliminating the need for an optocoupler.