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TI产品 - UCC1803介绍
UCC1803 - 低功耗 BiCMOS 电流模式 PWM

UCC1803是TI公司的一款PWM与谐振控制器产品,UCC1803是低功耗 BiCMOS 电流模式 PWM,本页介绍了UCC1803的产品说明、应用、特性等,并给出了与UCC1803相关的TI元器件型号供参考。

UCC1803 - 低功耗 BiCMOS 电流模式 PWM - PWM与谐振控制器 - 离线隔离型DC/DC控制器和转换器 - TI公司(Texas Instruments,德州仪器)

产品描述

The UCC1800/1/2/3/4/5 family of high-speed, low-power integrated circuits contain all of the control and drive components required for off-line and DC-to-DC fixed frequency current-mode switching power supplies with minimal parts count.

These devices have the same pin configuration as the UC1842/3/4/5 family, and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.

The UCC1800/1/2/3/4/5 family offers a variety of package options, temperature range options, choice of maximum duty cycle, and choice of critical voltage levels. Lower reference parts such as the UCC1803 and UCC1805 fit best into battery operated systems, while the higher reference and the higher UVLO hysteresis of the UCC1802 and UCC1804 make these ideal choices for use in off-line power supplies.

The UCC180x series is specified for operation from –55°C to +125°C, the UCC280x series is specified for operation from –40°C to +85°C, and the UCC380x series is specified for operation from 0°c to +70°C.

产品特性

  • 100µA Typical Starting Supply Current
  • 500µA Typical Operating Supply Current
  • Operation to 1 MHz
  • Internal Soft Start
  • Internal Fault Soft Start
  • Internal Leading-Edge Blanking of the Current Sense Signal
  • 1 Amp Totem-Pole Output
  • 70ns Typical Response from Current-Sense to Gate Drive Output
  • 1.5% Tolerance Voltage Reference
  • Same Pinout as UC3842 and UC3842A

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