Products
Power Management
Semtech SC2441
Very Low Input Voltage 2-Phase Synchronous Step-Down Controller with Step-Up Converter
The SC2441 is a high-frequency triple output switching regulator controller. It consists of a dual out-of-phase synchronous step-down PWM controller with high-current output gate drives and a 1.7A integrated step-up switching regulator.
Overview
Features
- 2-phase synchronous step-down controller
- 2-phase synchronous continuous conduction mode for high-efficiency step-down converters
- Out-of-phase operation for low input current ripples
- Operates up to 1 MHz per channel
- Configurable dual outputs or 2-phase single-output operation with peak current-mode control
- Excellent current sharing between phases
- Wide input voltage range: 1.8 V to 15 V
- Duty cycle up to 90%
- 0.5 V feedback voltages for low-voltage outputs
- Precision 50 mV current-limit threshold
- Patented Combi-Sense™ technique for high SNR of current-sensing
- Individual soft-start, overload shutdown and enable
- Step-up regulator
- Wide input voltage range: 1.8 V to 15 V
- Operates at twice the individual channel frequency of the buck controllers
- 0.3 V VCESAT switch at 1 A
- Fixed frequency with current-mode control
- Common features
- External synchronization
- Industrial temperature range
- TSSOP-28 package
Applications
- Low-voltage distributed DC-DC converters
- Telecommunication power supplies
- Servers and base stations
Packaging
TSSOP-28
Order Codes
- SC2441ITSTRT: Lead-Free, RoHS and WEEE Compliant, Package Minimum Tape & Reel Only