UCC28742DBVR
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Texas Instruments UCC28742DBVR

Manufacturer No:
UCC28742DBVR
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
IC OFFLINE SW FLYBACK SOT23-6
Delivery:
Payment:
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Product Introduction

Overview

The UCC28742DBVR is a highly integrated, 6-pin secondary-side regulated PWM controller manufactured by Texas Instruments. Designed for efficient AC/DC power supplies, this controller is particularly suited for applications requiring isolated flyback topologies. Its market positioning targets power supply designers seeking high efficiency, compact designs, and robust performance in consumer electronics, industrial automation, and other power-intensive applications. The UCC28742DBVR stands out for its secondary-side regulation, precise current limiting, and advanced fault protection features, making it a competitive choice in the power management IC market.

Key Specifications

ParameterValueUnitNotes
Switching Frequency (Max)105kHz
UVLO Thresholds (On/Off)22/7.7V
Duty Cycle (Max)99%
Operating Temperature Range-40 to 125°C
Output Regulation Accuracy1%
PackageSOT23-6

Key Features

  • Secondary-side regulation for precise output control.
  • Resonant valley switching for improved efficiency.
  • Frequency dithering to simplify EMI compliance.
  • Clamped gate drive output for MOSFET protection.
  • Comprehensive fault protection including OVP, OCP, and UVLO.

Applications

The UCC28742DBVR is widely used in AC/DC power supplies for consumer electronics, industrial equipment, and LED lighting. Its ability to handle large load steps with transient response makes it ideal for applications requiring stable and efficient power delivery. Additionally, its isolated flyback topology is suitable for designs where safety and reliability are critical, such as in medical devices and automotive electronics.

Q & A

What is the maximum switching frequency of the UCC28742DBVR?

The maximum switching frequency is 105 kHz.

What is the operating temperature range?

The operating temperature range is -40°C to 125°C.

Does it support secondary-side regulation?

Yes, it features secondary-side regulation for precise output control.

What type of protection features are included?

It includes overvoltage protection (OVP), overcurrent protection (OCP), and undervoltage lockout (UVLO).

What is the package type?

The package type is SOT23-6.

What is the duty cycle range?

The maximum duty cycle is 99%.

Is it suitable for isolated flyback topologies?

Yes, it is specifically designed for isolated flyback topologies.

What is the UVLO threshold?

The UVLO thresholds are 22V (on) and 7.7V (off).

Does it support frequency dithering?

Yes, frequency dithering is supported to simplify EMI compliance.

What is the output regulation accuracy?

The output regulation accuracy is 1%.

Product Attributes

Output Isolation:Isolated
Internal Switch(s):No
Voltage - Breakdown:- 
Topology:Flyback
Voltage - Start Up:21.6 V
Voltage - Supply (Vcc/Vdd):9V ~ 35V
Duty Cycle:99%
Frequency - Switching:80kHz
Power (Watts):- 
Fault Protection:Current Limiting, Over Voltage, Short Circuit
Control Features:- 
Operating Temperature:-40°C ~ 125°C
Package / Case:SOT-23-6
Supplier Device Package:SOT-23-6
Mounting Type:Surface Mount
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Similar Products

Part Number UCC28742DBVR UCC28742DBVT UCC28702DBVR UCC28722DBVR
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Product Status Active Active Active Active
Output Isolation Isolated Isolated Isolated Isolated
Internal Switch(s) No No No No
Voltage - Breakdown - - - -
Topology Flyback Flyback Flyback Flyback
Voltage - Start Up 21.6 V 21.6 V 21 V 21 V
Voltage - Supply (Vcc/Vdd) 9V ~ 35V 9V ~ 35V 9V ~ 35V 9V ~ 35V
Duty Cycle 99% 99% - -
Frequency - Switching 80kHz 80kHz 1kHz ~ 130kHz 650Hz ~ 80kHz
Power (Watts) - - - -
Fault Protection Current Limiting, Over Voltage, Short Circuit Current Limiting, Over Voltage, Short Circuit Current Limiting, Over Voltage Current Limiting, Over Voltage
Control Features - - - -
Operating Temperature -40°C ~ 125°C -40°C ~ 125°C -20°C ~ 125°C (TJ) -40°C ~ 125°C (TJ)
Package / Case SOT-23-6 SOT-23-6 SOT-23-6 SOT-23-6
Supplier Device Package SOT-23-6 SOT-23-6 SOT-23-6 SOT-23-6
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount

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