h1_key

说明

控制IC提供了所有必要的功能，以实现离线固定频率、电流模式的开关电源，只需最少的外部组件。电流模式架构展示了改进的负载调节、逐脉冲限流和电源输出开关的固有保护

特性

• Optimized For Off-Line Control
• Low Start-Up Current (<1mA)
• Automatic Feed Forward Compensation
• Trimmed Oscillator Discharge Current
• Pulse-By-Pulse Current Limiting
• Enhanced Load Response Characteristics -
• Double-Pulse Suppression
• High-Current Totem-Pole Output (1A Peak)
• Internally Trimmed Band-gap Reference
• 500kHz Operation Under-voltage Lockout: SG1843 - 8.4 volts
• Low Shoot-Through Current <75mA Over Temperature

参数