UCC2807-3

ACTIVE

Economy low power BICMOS 1MHz current mode PWM with 4.3V/4.1V UVLO, Prog duty cycle, -40C to 85C

Product details

Vin (max) (V) 13.5 Operating temperature range (°C) -40 to 85 Control mode Current Topology Boost, Flyback, Forward Rating Catalog, Military Features Adjustable switching frequency, Error amplifier, Leading edge blanking, Multi-topology, Programmable max duty cycle, Soft start Duty cycle (max) (%) 78
Vin (max) (V) 13.5 Operating temperature range (°C) -40 to 85 Control mode Current Topology Boost, Flyback, Forward Rating Catalog, Military Features Adjustable switching frequency, Error amplifier, Leading edge blanking, Multi-topology, Programmable max duty cycle, Soft start Duty cycle (max) (%) 78
SOIC (D) 8 29.4 mm² 4.9 x 6
  • User Programmable Maximum PWM Duty Cycle
  • 100-A Startup Current
  • Operation to 1 MHz
  • Internal Full Cycle Soft Start
  • Internal Leading Edge Blanking of Current Sense Signal
  • 1-A Totem Pole Output

  • User Programmable Maximum PWM Duty Cycle
  • 100-A Startup Current
  • Operation to 1 MHz
  • Internal Full Cycle Soft Start
  • Internal Leading Edge Blanking of Current Sense Signal
  • 1-A Totem Pole Output

The UCC3807 family of high speed, low power integrated circuits contains all of the control and drive circuitry required for off-line and dc-to-dc fixed frequency current mode switching power supplies with minimal external parts count.

These devices are similar to the UCC3800 family, but with the added feature of a user programmable maximum duty cycle. Oscillator frequency and maximum duty cycle are programmed with two resistors and a capacitor. The UCC3807 family also features internal full cycle soft start and internal leading edge blanking of the current sense input.

The UCC3807 family offers a variety of package options, temperature range options, and choice of critical voltage levels. The family has UVLO thresholds and hysteresis levels for off-line and battery powered systems. Thresholds are shown in the table below.

The UCC3807 family of high speed, low power integrated circuits contains all of the control and drive circuitry required for off-line and dc-to-dc fixed frequency current mode switching power supplies with minimal external parts count.

These devices are similar to the UCC3800 family, but with the added feature of a user programmable maximum duty cycle. Oscillator frequency and maximum duty cycle are programmed with two resistors and a capacitor. The UCC3807 family also features internal full cycle soft start and internal leading edge blanking of the current sense input.

The UCC3807 family offers a variety of package options, temperature range options, and choice of critical voltage levels. The family has UVLO thresholds and hysteresis levels for off-line and battery powered systems. Thresholds are shown in the table below.

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Type Title Date
* Data sheet Programmable Maximum Duty Cycle PWM Controller datasheet (Rev. B) 07 Oct 2010
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018

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