技术特性

• Fixed−Frequency Current−Mode Operation (65 kHz and 100 kHz
  frequency options)
  
• Frequency Foldback then Skip Mode for Maximized Performance in
  Light Load and Standby Conditions
  
• Timer−Based Overload Protection with Latched (Option A) or
  Auto−Recovery (Option B) Operation
  
• High−voltage Current Source with Dynamic Self−Supply,
  Simplifying the Design of the VCC Circuitry
  
• Frequency Modulation for Softened EMI Signature
  
• Adjustable Overpower Protection Dependant on the Bulk Voltage
  
• Latch−off Input Combined with the Overpower Protection Sensing
  Input
  
• VCC Operation up to 28 V, With Overvoltage Detection
  
• 500/800 mA Source/Sink Drive Peak Current Capability
  
• 10 ms Soft−Start
  
• Internal Thermal Shutdown
  
• No−Load Standby Power < 30 mW
  
• X2 Capacitor in EMI Filter Discharging Feature
  
• These Devices are Pb−Free and Halogen Free/BFR Free
  

优势

• Maximizes efficiency in light load and standby conditions
• Protection against overcurrent or short circuit conditions
• Provides fast, loss-less startup
• Softer EMI signature
• Compensates peak current for changing line input voltage
• Simplifies protection for fault conditions like overtemperature or overvoltage
• Eliminates the X2 capacitor discharge resistors and their associated parasitic consumption
• Allows the power supply to achieve extremely low no load power consumption

封装图 PACKAGE DIMENSIONS