Products
Power Management
Semtech SC4911
Bias/Primary Side PWM Controller with Ultra-Low Start-up Current
Not Recommended for New Designs. Datasheet is for information purposes only.
The SC4911 is a highly integrated bias/primary side PWM controller designed for off-line or isolated dc-dc converters in telecommunication and data communication applications. The high degree of integration minimizes the amount of discrete parts needed and leads to substantial cost and space saving converter designs.Overview
Features
- Programmable switching frequency up to 500kHz
- Line UVLO Protection
- Undervoltage Lockout
- Low startup current (45μA)
- Cycle by cycle current limit
- 8 pin MSOP. Available in Lead-free, fully WEEE and RoHS compliant
Applications
- Telecom isolated converters
- Offline isolated power supplies
- Instrumentation power supplies
- Battery chargers
Packaging
MSOP-8
Order Codes
- SC4911AMSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
- SC4911BMSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
- SC4911IMSTR: Package Minimum Tape & Reel Only
- SC4911IMSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
Diagrams and Specs
Block Diagram
Click diagram to enlarge