Product details

Topology Boost, Flyback, Forward Duty cycle (Max) (%) 100 UVLO thresholds on/off (V) 4.1/3.6 Features Adjustable Switching Frequency, Current Limiting, Dead Time Control, Error Amplifier, Leading Edge Blanking, Multi-topology, Soft Start Operating temperature range (C) -40 to 125 Rating Automotive Gate drive (Typ) (A) 1
Topology Boost, Flyback, Forward Duty cycle (Max) (%) 100 UVLO thresholds on/off (V) 4.1/3.6 Features Adjustable Switching Frequency, Current Limiting, Dead Time Control, Error Amplifier, Leading Edge Blanking, Multi-topology, Soft Start Operating temperature range (C) -40 to 125 Rating Automotive Gate drive (Typ) (A) 1
SOIC (D) 8 19 mm² 4.9 x 3.9
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to 125°C TA
    • Device HBM classification level 2: ±2 kV
    • Device CDM classification level C5: >1000 V
  • 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
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to 125°C TA
    • Device HBM classification level 2: ±2 kV
    • Device CDM classification level C5: >1000 V
  • 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-Q1 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-Q1 family offers a variety of package options, temperature range options, choice of maximum duty cycle, and choice of critical voltage levels. Lower reference parts such as the UCC2803-Q1 and UCC2805-Q1 fit best into battery-operated systems, while the higher reference and higher UVLO hysteresis of the UCC2802-Q1 and UCC2804-Q1 make these ideal choices for use in off-line power supplies.

The UCC280x-Q1 series is specified for operation from –40°C to 125°C.

The UCC280x-Q1 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-Q1 family offers a variety of package options, temperature range options, choice of maximum duty cycle, and choice of critical voltage levels. Lower reference parts such as the UCC2803-Q1 and UCC2805-Q1 fit best into battery-operated systems, while the higher reference and higher UVLO hysteresis of the UCC2802-Q1 and UCC2804-Q1 make these ideal choices for use in off-line power supplies.

The UCC280x-Q1 series is specified for operation from –40°C to 125°C.

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Technical documentation

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* Data sheet UCC280x-Q1 Low-Power BiCMOS Current-Mode PWM Controllers datasheet (Rev. D) PDF | HTML 31 May 2018

Design & development

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

Simulation model

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UCC3803 TINA-TI Transient Start-Up Reference Design (Rev. A)

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Simulation model

UCC3803 TINA-TI Transient Steady-State Ref Design (Rev. A)

SLUM052A.TSC (152 KB) - TINA-TI Reference Design
Simulation model

UCCx803 & UCCx813-3 Unencrypted PSpice Transient Model

SLUM511.ZIP (6 KB) - PSpice Model
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User guide: PDF
Schematic: PDF
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SOIC (D) 8 View options

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