SC4605: Low-Input, High-Efficiency Synchronous Step-Down Controller

• BiCMOS voltage-mode PWM controller
• 2.8 V to 5.5 V input voltage range
• Output voltages as low as 0.8 V
• ± 1% reference accuracy
• Sleep mode (Icc = 10 µA typ)
• Lossless adjustable short-circuit current limiting
• Combination pulse by pulse & hiccup-mode current limit
• High-efficiency synchronous switching
• 0% to 97% duty cycle range
• 1 A peak current driver
• 10-pin MSOP package

Typical Application Circuit

Click diagram to enlarge

• Distributed power architecture
• Servers/workstations
• Local microprocessor core power supplies
• DSP and I/O power supplies
• Battery-powered applications
• Telecommunications equipment
• Data processing applications

MSOP-10

• SC4605IMSTR: Package Minimum Tape & Reel Only
• SC4605IMSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only