UCC28C44DGKR
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Texas Instruments UCC28C44DGKR

Manufacturer No:
UCC28C44DGKR
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
IC OFFLINE CTRLR PWM UVLO 8VSSOP
Delivery:
Payment:
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Product Introduction

Overview

The UCC28C44DGKR is a high-performance current-mode PWM (Pulse Width Modulation) controller designed by Texas Instruments. This device is part of the UCC28C4x family, which offers enhanced performance and pin-to-pin compatibility with the industry-standard UCx84x and UCx84xA families. The UCC28C44DGKR is optimized for use in off-line power supplies, including AC-DC converters, DC-DC converters, LED drivers, and motor control circuits. It features a compact 8-pin VSSOP package, making it versatile for various design applications.

Key Specifications

Parameter Value Parameter Value
Regulator Topology Boost, Buck, Flyback, Forward, SEPIC Control Mode Current
Duty Cycle (max) (%) 50 Switching Frequency (max) (kHz) 1000
UVLO Thresholds On/Off (V) 14.5/9 Operating Temperature Range (°C) -40 to 125
Gate Drive (typ) (A) ±1 Rise Time (ns) 25
Fall Time (ns) 20 Error Amplifier Reference Accuracy ±1% (2.5V)
Package VSSOP-8 (DGK) Startup Current 50µA
Operating Current 2.3mA (at fOSC = 52kHz) Overcurrent Limiting Delay 35ns

Key Features

  • Programmable soft start reduces inrush current
  • Adaptive on-time control optimizes power usage
  • Internal UVLO (Undervoltage Lockout) prevents overvoltage damage
  • Peak current mode control for constant frequency operation
  • Wide input voltage range of 4.5V to 28V
  • Integrated high voltage startup and oscillator for simplified design
  • Adjustable switching frequency and dead time control
  • Error amplifier and multi-topology support
  • Fast, cycle-by-cycle overcurrent limiting
  • ±1A peak output current capability with improved rise and fall times

Applications

The UCC28C44DGKR is commonly used in various power management applications, including:

  • AC-DC converters
  • DC-DC converters
  • LED drivers
  • Motor control circuits
  • Power adapters and chargers
  • LED lighting systems

Q & A

  1. What is the UCC28C44DGKR?

    The UCC28C44DGKR is a high-performance current-mode PWM controller designed for off-line power supplies.

  2. What package type does the UCC28C44DGKR use?

    The UCC28C44DGKR is housed in an 8-pin VSSOP (DGK) package.

  3. What is the operating temperature range of the UCC28C44DGKR?

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

  4. What is the maximum switching frequency of the UCC28C44DGKR?

    The maximum switching frequency is 1000 kHz.

  5. Does the UCC28C44DGKR support multiple topologies?

    Yes, it supports Boost, Buck, Flyback, Forward, and SEPIC topologies.

  6. What is the UVLO threshold for the UCC28C44DGKR?

    The UVLO thresholds are 14.5V for start and 9V for shutdown.

  7. What is the peak output current capability of the UCC28C44DGKR?

    The peak output current capability is ±1A.

  8. Does the UCC28C44DGKR have overcurrent protection?

    Yes, it features fast, cycle-by-cycle overcurrent limiting.

  9. What is the startup current of the UCC28C44DGKR?

    The startup current is 50µA.

  10. Is the UCC28C44DGKR RoHS compliant?

    Yes, the UCC28C44DGKR is RoHS compliant.

Product Attributes

Output Type:Transistor Driver
Function:Step-Up, Step-Up/Step-Down
Output Configuration:Positive
Topology:Boost, Flyback, Forward Converter
Number of Outputs:1
Output Phases:1
Voltage - Supply (Vcc/Vdd):9V ~ 18V
Frequency - Switching:Up to 1MHz
Duty Cycle (Max):48%
Synchronous Rectifier:No
Clock Sync:No
Serial Interfaces:- 
Control Features:Frequency Control
Operating Temperature:-40°C ~ 105°C (TJ)
Mounting Type:Surface Mount
Package / Case:8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Supplier Device Package:8-VSSOP
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Similar Products

Part Number UCC28C44DGKR UCC28C45DGKR UCC28C40DGKR UCC28C41DGKR UCC28C42DGKR UCC28C43DGKR UCC28C44DGK
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Product Status Active Active Active Active Active Active Active
Output Type Transistor Driver Transistor Driver Transistor Driver Transistor Driver Transistor Driver Transistor Driver Transistor Driver
Function Step-Up, Step-Up/Step-Down Step-Up, Step-Up/Step-Down Step-Up, Step-Up/Step-Down Step-Up, Step-Up/Step-Down Step-Up, Step-Up/Step-Down Step-Up, Step-Up/Step-Down Step-Up, Step-Up/Step-Down
Output Configuration Positive Positive Positive Positive Positive Positive Positive
Topology Boost, Flyback, Forward Converter Boost, Flyback, Forward Converter Boost, Flyback, Forward Converter Boost, Flyback, Forward Converter Boost, Flyback, Forward Converter Boost, Flyback, Forward Converter Boost, Flyback, Forward Converter
Number of Outputs 1 1 1 1 1 1 1
Output Phases 1 1 1 1 1 1 1
Voltage - Supply (Vcc/Vdd) 9V ~ 18V 7.6V ~ 18V 6.6V ~ 18V 6.6V ~ 18V 9V ~ 18V 7.6V ~ 18V 9V ~ 18V
Frequency - Switching Up to 1MHz Up to 1MHz Up to 1MHz Up to 1MHz Up to 1MHz Up to 1MHz Up to 1MHz
Duty Cycle (Max) 48% 48% 96% 48% 96% 96% 48%
Synchronous Rectifier No No No No No No No
Clock Sync No No No No No No No
Serial Interfaces - - - - - - -
Control Features Frequency Control Frequency Control Frequency Control Frequency Control Frequency Control Frequency Control Frequency Control
Operating Temperature -40°C ~ 105°C (TJ) -40°C ~ 105°C (TJ) -40°C ~ 105°C (TJ) -40°C ~ 105°C (TJ) -40°C ~ 105°C (TJ) -40°C ~ 105°C (TJ) -40°C ~ 105°C (TJ)
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Supplier Device Package 8-VSSOP 8-VSSOP 8-VSSOP 8-VSSOP 8-VSSOP 8-VSSOP 8-VSSOP

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