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UCC28C42DGK The Unitrode UCC28C42DGK is a BiCMOS low-power current-mode PWM controller. It offers high-frequency operation up to 1MHz and a ±1A peak output current.
Mfr Part #:

UCC28C42DGK

Available from 1 distributors
Mfr Name: Unitrode
Unitrode
The Unitrode UCC28C42DGK is a BiCMOS low-power current-mode PWM controller. It offers high-frequency operation up to 1MHz and a ±1A peak output current.
✓ Total Stock: 180 pcs
$ Price Range: $0.78

UCC28C42DGK Available from 1 distributor

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✓ Non-Authorised
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180 pcs
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UCC28C42DGK Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Clock Sync
Control Features
Duty Cycle (Max)
Frequency
Function
Mounting Type
Number of Outputs
Operating Temperature
Output Configuration
Output Phases
Output Type
Supplier Device Package
Synchronous Rectifier
Tape & Reel
Topology
Voltage
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UCC28C42DGK Description

Short technical summary and product information.

The UCC28C42DGK from Unitrode is a high-performance, BiCMOS current-mode PWM controller. It serves as an enhanced, pin-to-pin compatible replacement for the UCx84x and UCx84xA families. This controller is designed for switch-mode power supplies and general-purpose DC-DC converters.

 

Key features include a maximum operating frequency of 1MHz, a low startup current of 50μA and maximum 100μA, and a low operating current of 2.3mA at 52kHz. It provides fast, cycle-by-cycle overcurrent limiting in 35ns and a peak driving current of ±1A with rail-to-rail output swings. The device also boasts a ±1% accurate 2.5V error amplifier reference and trimmed oscillator discharge current.

 

Designed for efficiency and speed, the UCC28C42DGK operates within a voltage range of 9V to 18V and an industrial temperature range of -40°C to 105°C. It is available in an 8-VSSOP package, which minimizes board space, making it suitable for board mount power modules and other space-constrained applications.

 

This controller supports various topologies including Boost, Flyback, and Forward converters. It features undervoltage lockout protections and offers frequency control. The output type is a transistor driver, with a maximum duty cycle of 96%.

UCC28C42DGK Quick Information

Product Type: PWM Controller
Series: UCC28C4x
Canonical Name: UCC28C42DGK BiCMOS Low-Power Current-Mode PWM Controller
Subcategory: DC DC Switching Controllers

UCC28C42DGK Compliance

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

UCC28C42DGK Estimated Pricing

Qty Low High
1+ $0.78 $0.78

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

UCC28C42DGK Features

  • BiCMOS low-power current-mode PWM controller
  • 1MHz maximum operating frequency
  • ±1A peak output current
  • Fast 35ns overcurrent limiting
  • 8-VSSOP package minimizes board space

UCC28C42DGK Applications

  • Ideal for switch-mode power supplies
  • Suitable for DC-DC converters
  • Used in board mount power modules
  • Supports Boost, Flyback, Forward topologies

UCC28C42DGK FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the UCC28C42DGK?

9V to 18V.

What package is the UCC28C42DGK available in?

8-VSSOP and 8-TSSOP, 8-MSOP (0.118", 3.00mm Width).

What is the operating temperature range?

-40°C to 105°C.

What is the maximum switching frequency?

1MHz.

What is the peak gate drive current?

±1A.

Does the UCC28C42DGK have undervoltage lockout?

Yes, with thresholds 14.5V on and 9V off.

What topologies does it support?

Boost, flyback, and forward converter.

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