Products
Power Management
Semtech SC2677
Dual Synchronous Voltage-Mode Controller with Current-Sharing Circuitry
The SC2677 is a versatile 2 phase, synchronous, voltage mode PWM controller that may be used in two distinct ways. First, the SC2677 is ideal for applications where point of use output power exceeds any single input power budget. Alternatively, the SC2677 can be used as a dual switcher. The SC2677 features a temperature compensated voltage reference, an under voltage lockout over current protection and internal level-shifted, high-side drive circuitry.
Overview
Features
- 300 kHz to 1 MHz externally-programmable frequency operation
- Soft start and enable function
- Power-good output provided
- Under-voltage short-circuit protection
- Phase-shifted switchers minimize ripple
- High efficiency operation, >90%
- Programmable output(s) as low as 0.5 V
- Industrial temperature range
- TSSOP-20 package
- Bias voltage as low as 4.5 V
- Adjustable phase shift between channels
- 2-phase, current-sharing controller
- Flexible, same or separate VIN
- Programmable current sharing
- Thermal distribution via multi-phase output
Applications
- Graphics cards
- Peripheral add-in cards
- Dual-phase power supplies
- Power supplies requiring two outputs
Packaging
TSSOP-20
Order Codes
- SC2677TSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only
Diagrams and Specs
Block Diagram
Click diagram to enlarge