SF1539
SF1539 is PWM Power Switch manufactured by SiFirst.
η -BalanceTM PWM Power Switch Fixed 50KHz Fsw
Features
- Built-in 600V Power MOSFET
- Proprietary η -BalanceTM Control to Boost
Light Load Efficiency
- Proprietary “Zero OCP/OPP Recovery Gap”
Control
- Fixed 50KHz Switching Frequency
- Built-in Soft Start Function
- Very Low Startup Current
- Frequency Reduction and Burst Mode Control for Energy Saving
- Current Mode Control
- Built-in Frequency Shuffling
- Built-in Synchronous Slope pensation
- Cycle-by-Cycle Current Limiting
- Built-in Leading Edge Blanking (LEB)
- Constant Power Limiting
- Pins Floating Protection
- Audio Noise Free Operation
- VDD OVP & Clamp
- VDD Under Voltage Lockout (UVLO)
APPLICATIONS
Offline AC/DC...
