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AC/DC 和 DC/DC 控制器 (外部 FET)

UCC2807-3

現行

具有 4.3V/4.1V UVLO、可編程工作週期、-40C 至 85C 的經濟型低功耗 BICMOS 1MHz 電流模式 PWM

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產品規格表

UCC2807-3

現行
產品規格表 立即訂購

產品詳細資料

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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UCC2803 現行 具有 4.1V/3.6V UVLO 和 100% 占空比、-40C 至 125C 的 12V、1A 低功耗 BICMOS 1MHz 電流模式 PWM Wider temperature range

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類型 標題 日期
* Data sheet Programmable Maximum Duty Cycle PWM Controller datasheet (Rev. B) 2010年 10月 7日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日

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