SC2446A: Not Recommended for New Designs; use SC2447
The SC2446A is a high-frequency dual synchronous stepdown switching power supply controller. It provides out-of-phase output gate signals. The SC2446A operates in synchronous continuous-conduction mode.
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- 2-Phase synchronous continuous conduction mode for high efficiency step-down converters
- Out of phase operation for low input current ripples
- Output source and sink currents
- Fixed frequency peak current-mode control
- 50mV/-75mV maximum current sense voltage
- Inductive current-sensing for low-cost applications
- Optional resistor current-sensing for precise current-limit
- Dual outputs or 2-phase single output operation
- Excellent current sharing between individual phases
- Wide input voltage range: 4.7V to 16V
- Individual soft-start, overload shutdown and enable
- Duty cycle up to 88%
- 0.5V feedback voltage for low-voltage outputs
- External reference input for DDR applications
- Programmable frequency up to 1MHz per phase
- External synchronization
- Industrial temperature range
- 28-lead TSSOP lead free package. This product is fully WEEE and RoHS compliant
- Telecommunication power supplies
- DDR memory power supplies
- Graphic power supplies
- Servers and base stations
- SC2446AITSTRT: Lead-Free, 2500 pcs per tape and reel
