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UCC3807-3

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经济型低功耗 BICMOS 1MHz 电流模式 PWM，具有 4.3V/4.1V UVLO、可编程占空比，工作温度范围为 0°C 至 70°C

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数据表

UCC3807-3

正在供货
数据表 立即订购

产品详情

Topology Boost, Flyback Control mode Current Features Error amplifier, Leading edge blanking, Multi-topology, Soft start Duty cycle (max) (%) 78
Topology Boost, Flyback Control mode Current Features Error amplifier, Leading edge blanking, Multi-topology, Soft start Duty cycle (max) (%) 78
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm)
  • 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 正在供货 具有 4.1V/3.6V UVLO 和 100% 占空比的 12V、1A 低功耗 BICMOS 1MHz 电流模式 PWM Wider temperature range

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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 Programmable Maximum Duty Cycle PWM Controller 数据表 (Rev. B) 2010-10-7

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