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UCC2804
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UCC2804

  • 所属类别：ACDC-和-DCDC-电源
  • 产品名称：低功耗 BiCMOS 电流模式 PWM
  • 厂商：TI
  • 生产批号：09+
  • 封装：8PDIP, 8SOIC, 8TSSOP
  • 库存状态：有库存
  • 库存量：2530
  • 最低订购量：1
  • 详细资料：点击查找UCC2804的pdf资料
  • 点击询价
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  • Product Introduction

The high-speed, low-power IC contains all the control and driver components required for UCC1800/1/2/3/4/5 home switching power supplies for offline and DC-to-DC fixed-frequency current-mode switching power supplies with minimal parts.

These devices feature the same pinout configuration as the UC1842/3/4/5 series, and also offer internal full-cycle soft-start and internally leading current-sense input blanking value-added capabilities.

The UCC1800/1/2/3/4/5 series offers a choice of packages, temperature ranges, maximum duty cycles, and a selection of key various voltage levels. For example UCC1803 it is best to mate with UCC1805 reference parts to a battery-powered system, while higher reference and UCC1802 with UCC1804 higher UVLO hysteresis are ideal for use in off-line power supplies.

characteristic

 
  • Typical starting power supply current of 100μA
  • Typical operating current is 500μA
  • to 1 MHz operation
  • Internal soft start
  • Internal soft start failure
  • Built-in current sense signal with cutting-edge blanking
  • 1 amp totem pole output
  • The typical response of the 70NS ball valve ranges from current detection to gate drive output
  • 1.5% tolerance voltage reference
  • The same pin is the sum UC3842A of UC3842
parameter
    UCC2804  
topology   Boost, reverse, forward  
Control method   Current mode  
Duty Cycle (Max) (%)   50  
Frequency (max) (kHz)   1000  
On/off of undervoltage lockout threshold (5)   12.5/8.3  
Pin/Pack   8PDIP，8SOIC，8TSSOP  
(#) Regulated output   One  
Operating Temperature Range (°C)   -40 to 85 0 to 70

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