SC4809B: High-Performance Current-Mode PWM Controller

• Operation to 1 MHz
• Accurate programmable maximum duty cycle
• Line voltage monitoring
• External frequency synchronization
• Bi-phase mode of operation for low ripple
• Under 100 µA start-up current
• Accessible reference voltage
• VDD under-voltage lockout
• -40°C to 105°C operating temperature
• 10-lead MSOP package

Typical Application Circuit

Click diagram to enlarge

• Telecom equipment and power supplies
• Networking power supplies
• Power over LAN applications
• Industrial power supplies
• Isolated power supplies

MSOP-10

• SC4809BIMSTR: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
• SC4809BIMSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only