text.skipToContent text.skipToNavigation


Programmable Maximum Duty Cycle PWM Controller


Package | PIN: SOIC (D) | 8
Temp: I (-40 to 85)
Carrier: Partial Tube
Qty Price
1-9 $4.70
10-24 $4.23
25-99 $3.94
100-249 $3.45
250-499 $3.24
500-749 $2.75
750-999 $2.32
1000+ $2.22


  • User Programmable Maximum PWMDuty 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

Texas Instruments  UCC2807D-2

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.