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UCC28C42DGKR The Texas Instruments UCC28C42DGKR is a low-power, current-mode PWM controller designed for various power supply topologies. It operates within a 9V to 18V range and supports up to 1MHz switching frequencies.
Mfr Part #:

UCC28C42DGKR

Available from 1 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments UCC28C42DGKR is a low-power, current-mode PWM controller designed for various power supply topologies. It operates within a 9V to 18V range and supports up to 1MHz switching frequencies.
✓ Total Stock: 1,543 pcs
$ Price Range: $0.92

UCC28C42DGKR Available from 1 distributor

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✓ Non-Authorised
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1,543 pcs
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1543 pcs On Request 1 On Request On Request On Request On Request On Request
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UCC28C42DGKR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Clock Sync
Control Features
Duty Cycle (Max)
Frequency
Function
Industrial Grade
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Phases
Output Type
Supplier Device Package
Synchronous Rectifier
Topology
Voltage
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UCC28C42DGKR Description

Short technical summary and product information.

The UCC28C42DGKR from Texas Instruments is a BiCMOS low-power current-mode PWM controller. It is an enhanced replacement for the UCx84x and UCx84xA families, offering pin-to-pin compatibility.

 

This controller supports multiple topologies including Boost, Flyback, and Forward converters. It features adjustable switching frequency up to 1MHz, with a maximum duty cycle of 96%. Key electrical characteristics include a wide operating voltage range of 9V to 18V, a maximum startup current of 50µA, and a low operating current of 2.3mA at 52kHz.

 

For protection and performance, it includes fast, cycle-by-cycle overcurrent limiting (35ns), ±1A peak driving current, and a ±1% accurate 2.5V error amplifier reference. Undervoltage lockout protections are also integrated.

 

The UCC28C42DGKR is available in an 8-VSSOP package, measuring 14.7 mm², which minimizes board space. It is suitable for surface mount applications and operates within an industrial temperature range of -40°C to 105°C.

UCC28C42DGKR Quick Information

Product Type: DC DC Switching Controller
Canonical Name: UCC28C42DGKR Current Mode PWM Controller
Subcategory: AC/DC Switching Regulators

UCC28C42DGKR Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

UCC28C42DGKR Estimated Pricing

Qty Low High
1+ $0.92 $0.92

Estimated market price range - modelled values for guidance only, not live distributor offers.

UCC28C42DGKR Features

  • Low-power current-mode PWM controller.
  • Supports Boost, Flyback, and Forward topologies.
  • Operates up to 1MHz switching frequency.
  • Fast cycle-by-cycle overcurrent limiting.
  • Compact 8-VSSOP package for surface mounting.

UCC28C42DGKR Applications

  • Suitable for offline AC-DC power supplies.
  • Used in industrial converter applications.
  • Supports flyback and forward topologies.
  • Ideal for boost and SEPIC converters.
  • Applicable in telecom DC-DC converters.

UCC28C42DGKR FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range for the UCC28C42DGKR?

The operating voltage range is 9V to 18V.

What package type is the UCC28C42DGKR available in?

The UCC28C42DGKR is available in an 8-VSSOP package.

What is the maximum operating temperature for the UCC28C42DGKR?

The maximum operating temperature is 105°C.

What is the maximum duty cycle for the UCC28C42DGKR?

The maximum duty cycle is 96%.

What is the switching frequency of the UCC28C42DGKR?

The switching frequency can be up to 1MHz.

What are the key control features of the UCC28C42DGKR?

Key control features include frequency control.

What is the startup current for the UCC28C42DGKR?

The maximum startup current is 50µA.

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