SC2441: Very Low Input Voltage 2-Phase Synchronous Step-Down Controller with Step-Up Converter

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 V_CESAT switch at 1 A
- Fixed frequency with current-mode control
Common features
- External synchronization
- Industrial temperature range
- TSSOP-28 package