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UC3845BN
元件品牌:ST
元件型号:UC3845BN
采购数量:
 

详细参数

UC3845B系列 15 V 17 A 高性能 电流模式 控制器 - PDIP-8

制造商零件编号:UC3845BN
安装方法: Through Hole
封装形式: PDIP-8
包装: TUBE
标准包装数量: 50

UC3845BN 产品亮点
  • Supply Current-Max: 17 mA
  • Supply Voltage: 15 V
  • Duty Cycle-Max: 50 %
  • Frequency-Max: 500 kHz
  • Operating Temp Range: 0 to 70 °C
TheUC3845BN is of control ICs provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include a trimmed oscillator for precise DUTY CYCLE CONTROL under voltage lockout featuring start-up current less than 0.5 A.

A precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control, and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N-Channel MOSFETs, is low in the offstate.

UC3845BN Features:

  • Trimmed Oscillator for Precise frequency Control
  • Oscillator Frequency Guaranteed at 250 Hz
  • Current Mode Operation to 500 kHz
  • Automatic Feed Forward Copensation
  • Latching PWM for Cycle-by-cycle Current Limiting
  • Internally Trimmed Reference with Undervoltage lockout
  • High Current totem pole output Undervoltage Lockout With Hystersis
  • Low Start-up and Operating Current
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