UCC28701DBVR Equivalent & Substitute Parts

Part Overview

The UCC28701DBVR is an offline switching flyback converter IC manufactured by Texas Instruments, designed for isolated power supply applications. This Surface Mount device operates across a 9V to 35V supply range with switching frequencies between 1kHz and 130kHz, incorporating current limiting and over-voltage fault protection. The part is Active status and ROHS3 compliant, making it suitable for modern power management designs requiring galvanic isolation.

Substitute parts are necessary when the primary part number becomes unavailable, when inventory constraints require alternative sourcing, or when design flexibility permits selection from the UCC287xx controller family while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Manufacturer	Texas Instruments
Category	Power Management (PMIC)
Topology	Flyback
Output Isolation	Isolated
Voltage Supply Range (Vcc/Vdd)	9V ~ 35V
Voltage Start Up	21V
Frequency - Switching	1kHz ~ 130kHz
Fault Protection	Current Limiting, Over Voltage
Operating Temperature Range	-20°C ~ 125°C (TJ)
Package / Case	SOT-23-6
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the UCC28701DBVR is determined by strict equivalence across the following critical parameters:

Topology: Flyback converter architecture
Output Isolation: Galvanic isolation requirement
Voltage Supply Range: 9V ~ 35V input specification
Voltage Start Up: 21V threshold
Switching Frequency Range: 1kHz ~ 130kHz operational band
Fault Protection: Current limiting and over-voltage protection
Package: SOT-23-6 form factor
Mounting: Surface Mount configuration
Compliance: ROHS3 and REACH standards

All substitute parts listed maintain identical electrical specifications and mechanical compatibility with the UCC28701DBVR. Differences exist only in base product numbering (UCC28700, UCC28702, UCC28703) and packaging designation (DBVR vs. DBVT tape reel variants), which do not affect functional performance or circuit integration.

Parameter Comparison

Part Number	Manufacturer	Topology	Vcc/Vdd Range	Switching Frequency	Package	Operating Temp	RoHS Status	Inventory (Pcs)
UCC28701DBVR	Texas Instruments	Flyback	9V ~ 35V	1kHz ~ 130kHz	SOT-23-6	-20°C ~ 125°C	ROHS3	2550
UCC28700DBVR	Texas Instruments	Flyback	9V ~ 35V	1kHz ~ 130kHz	SOT-23-6	-20°C ~ 125°C	ROHS3	6200
UCC28700DBVT	Texas Instruments	Flyback	9V ~ 35V	1kHz ~ 130kHz	SOT-23-6	-20°C ~ 125°C	ROHS3	2400
UCC28701DBVT	Texas Instruments	Flyback	9V ~ 35V	1kHz ~ 130kHz	SOT-23-6	-20°C ~ 125°C	ROHS3	2650
UCC28702DBVT	Texas Instruments	Flyback	9V ~ 35V	1kHz ~ 130kHz	SOT-23-6	-20°C ~ 125°C	ROHS3	1542
UCC28703DBVT	Texas Instruments	Flyback	9V ~ 35V	1kHz ~ 130kHz	SOT-23-6	-20°C ~ 125°C	ROHS3	6050

Engineering Selection Recommendations

All listed substitute parts maintain Active product status with ROHS3 compliance and REACH unaffected designation. Selection among equivalent parts should be based on:

Availability: UCC28700DBVR and UCC28703DBVT offer the highest inventory levels (6200 and 6050 units respectively), providing supply chain flexibility for high-volume applications.

Packaging Designation: DBVR and DBVT designations indicate tape reel packaging variants. Both are Surface Mount compatible and functionally equivalent; selection depends on procurement and assembly line requirements.

Base Product Number: UCC28700, UCC28701, UCC28702, and UCC28703 represent distinct controller variants within the UCC287xx family. All maintain identical electrical specifications for the parameters listed and are interchangeable within the defined parameter set.

Frequently Asked Questions (FAQ)

Q: Can UCC28700DBVR be used as a direct replacement for UCC28701DBVR?

A: Yes. Both parts share identical electrical specifications across all critical parameters: 9V to 35V supply range, 1kHz to 130kHz switching frequency, SOT-23-6 package, and equivalent fault protection features. The difference in base product number does not affect functional compatibility in flyback converter applications.

Q: What is the difference between DBVR and DBVT packaging designations?

A: DBVR and DBVT both indicate tape and reel packaging for Surface Mount assembly. The suffix variation reflects different tape reel configurations or manufacturing batches. Both are mechanically and electrically equivalent for circuit integration purposes.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification and REACH unaffected status, meeting environmental and regulatory requirements for modern electronics manufacturing.

Q: Can these parts be used interchangeably in existing PCB designs?

A: Yes. All substitute parts use the SOT-23-6 package with identical pinout and electrical characteristics. No PCB layout modifications are required for substitution.

Q: Which substitute part offers the best inventory availability?

A: UCC28700DBVR provides the highest stock level at 6200 units, followed by UCC28703DBVT at 6050 units. Both are suitable for immediate procurement in high-volume applications.

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