Product details

Topology Flyback, Boost, Duty cycle (Max) (%) 50 Supply voltage (Max) (V) 12 UVLO thresholds on/off (V) 12.5/8.3 Features Adjustable Switching Frequency, Current Limiting, Dead Time Control, Error Amplifier, Leading Edge Blanking, Multi-topology, Soft Start Operating temperature range (C) 0 to 70 Rating Catalog Frequency (Max) (kHz) 1000 Gate drive (Typ) (A) 1
Topology Flyback, Boost, Duty cycle (Max) (%) 50 Supply voltage (Max) (V) 12 UVLO thresholds on/off (V) 12.5/8.3 Features Adjustable Switching Frequency, Current Limiting, Dead Time Control, Error Amplifier, Leading Edge Blanking, Multi-topology, Soft Start Operating temperature range (C) 0 to 70 Rating Catalog Frequency (Max) (kHz) 1000 Gate drive (Typ) (A) 1
PDIP (P) 8 93 mm² 9.81 x 9.43 SOIC (D) 8 19 mm² 3.91 x 4.9 TSSOP (PW) 8 19 mm² 3 x 6.4
  • 100-µA typical starting supply current
  • 500-µA typical operating supply current
  • Operation up to 1 MHz
  • Internal soft start
  • Internal fault soft start
  • Internal leading-edge blanking of the current sense signal
  • 1-A totem-pole output
  • 70-ns typical response from current-sense to gate drive output
  • 1.5% tolerance voltage reference
  • Same pinout as UC3842 and UC3842A
  • 100-µA typical starting supply current
  • 500-µA typical operating supply current
  • Operation up to 1 MHz
  • Internal soft start
  • Internal fault soft start
  • Internal leading-edge blanking of the current sense signal
  • 1-A totem-pole output
  • 70-ns typical response from current-sense to gate drive output
  • 1.5% tolerance voltage reference
  • Same pinout as UC3842 and UC3842A

The UCC280x family of high-speed, low-power integrated circuits contain all of the control and drive components required for off-line and DC-to-DC fixed frequency current-mode switching mode power supplies with minimal parts count.

These devices have the same pin configuration as the UCx84x family, and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.

The UCC280x family of high-speed, low-power integrated circuits contain all of the control and drive components required for off-line and DC-to-DC fixed frequency current-mode switching mode power supplies with minimal parts count.

These devices have the same pin configuration as the UCx84x family, and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.

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Technical documentation

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Type Title Date
* Data sheet UCC280x Low-Power BiCMOS Current-Mode PWM Controllers datasheet (Rev. G) 12 May 2020
Application note Conditioning a Switch-mode Power Supply Current Signal Using TI Op Amps (Rev. A) 11 Jun 2021
Application note Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B) 12 Mar 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
User guide UCC3813 Dual Output Boost Converter 09 Oct 2003
Application note Dual Output Boost Converter 09 Apr 2003
Application note UCC38C42 Family of High-Speed BiCMOS Current-Mode PWM Controllers 07 Feb 2002
More literature Seminar 300 Topic 8 - Switching Power Supply Design Review 15 Feb 2001
More literature Seminar 400 Topic 2 - Design of Flyback Transformers and Filter Inductors 15 Feb 2001
More literature Seminar 900 Topic 6 - High Power Factor Prereg Using SEPIC 15 Feb 2001
Application note Differences Between the UCC3813 and the UCC3800 PWM Families 02 Jun 2000
Application note DN-30 Programmable Electronic Circuit Breaker 05 Sep 1999
Application note DN-42A Design Considerations for Transitioning from UC3842 to the New UCC3802 05 Sep 1999
Application note DN-43 Simple Techniques to Generate a Negative Voltage Bias Supply 05 Sep 1999
Application note DN-46 Highly Efficient Low Power DC to DC Inverter Converts +5V Input to -3V Out 05 Sep 1999
Application note DN-48 Versatile Low Power SEPIC Converter Accepts Wide Input Voltage Range 05 Sep 1999
Application note DN-54 Innovative Buck Regulator Uses High Side N-Channel Switch Without Complex 05 Sep 1999
Application note DN-56A, Single Switch Flyback Circuit Converts + 5 V to +/- 12 V for RS-232/422 05 Sep 1999
Application note DN-65 Considerations in Powering BiCMOS ICs 05 Sep 1999
Application note U-111, Practical Considerations in Current Mode Power Supplies 05 Sep 1999
Application note U-133A UCC3800/1/2/3/4/5 BiCMOS Current Mode Control IC's 05 Sep 1999

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation model

UCCx804, UCCx813-4 Families PSpice Transient Model (Rev. B)

SLUM082B.ZIP (88 KB) - PSpice Model
Simulation model

UCCX804 & UCCx813-4 TINA-TI Startup Reference Design

SLUM226.TSC (666 KB) - TINA-TI Reference Design
Simulation model

UCCX804 & UCCx813-4 TINA-TI Steady State Reference Design

SLUM227.TSC (667 KB) - TINA-TI Reference Design
Simulation model

UCCX804 & UCCx813-4 TINA-TI Transient Spice Model

SLUM228.ZIP (28 KB) - TINA-TI Spice Model
Simulation model

UCCx804 & UCCx813-4 Unencrypted PSpice Transient Model

SLUM515.ZIP (6 KB) - PSpice Model
Package Pins Download
PDIP (P) 8 View options
SOIC (D) 8 View options
TSSOP (PW) 8 View options

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