Semtech SC4901

Features

• Single controller performs synchronous rectification and post regulation
• Independent regulation of multiple outputs from a common secondary winding
• Turn-on shoot-through inherently eliminated
• Primary switch turns ON and OFF with zero current
• No synchronizing or any other signals needed across the isolation boundary
• Eliminates the need for a secondary bias supply
• Independent soft start, ON/OFF, remote sense and current limit for each output
• Resistive or inductive current sensing with 2 V current signal and 2.5 V reference for external applications
• 4.5 V to 18 V operation
• Max. operating frequency to 1 MHz
• Low-profile 16-pin TSSOP package
• Based on Semtech’s patent-pending Combi-Sync™ concept

Applications

• Telecom isolated DC-to-DC converters with multiple low-voltage outputs
• High-density brick and sub-brick modules with independently regulated multiple outputs
• Distributed power architectures
• Isolated VRMs

Packaging

TSSOP-16

Order Codes

• SC4901ITSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only