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UCC3807-2

ACTIVE

Economy low power BICMOS 1MHz current mode PWM with 12.5V/8.3V UVLO, Prog duty cycle, 0C to 70C

Product details

Topology Boost, Flyback Control mode Current Duty cycle (max) (%) 78 Switching frequency (max) (kHz) 1000 Features Error amplifier, Leading edge blanking, Multi-topology, Soft start UVLO thresholds on/off (V) 12.5/8.3 Operating temperature range (°C) 0 to 70 Rating Catalog Gate drive (typ) (A) 1 Vin (max) (V) 13.5
Topology Boost, Flyback Control mode Current Duty cycle (max) (%) 78 Switching frequency (max) (kHz) 1000 Features Error amplifier, Leading edge blanking, Multi-topology, Soft start UVLO thresholds on/off (V) 12.5/8.3 Operating temperature range (°C) 0 to 70 Rating Catalog Gate drive (typ) (A) 1 Vin (max) (V) 13.5
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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Technical documentation

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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
More literature UCC3807 Test Report 19 Feb 2008

Design & development

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

Bill of materials (BOM)

UCC3807 Bill of Materials

SLUR021.PDF (27 KB)
Schematic

UCC3807 Schematic

SLUR022.PDF (68 KB)
Package Pins Download
SOIC (D) 8 View options

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