LTC3351
Overview
The LTC®3351 is a backup power controller that charges and monitors a series stack of one to four supercapacitors. The LTC3351’s synchronous step-down controller drives N-channel MOSFETs for constant current/constant voltage charging with programmable input current limit.
- Integrated Hot Swap Controller with Circuit Breaker
- High Efficiency Synchronous Step-Down CC/CV Charging of One to Four Series Supercapacitors
- Step-Up Mode in Backup Provides Greater Utilization of Stored Energy in Supercapacitors
- 16-Bit ADC for Monitoring System Voltages/ Currents, Capacitance and ESR
- Programmable Undervoltage and Overvoltage Thresholds to 35V
- VIN: 4.5V to 35V, VCAP(n): Up to 5V per Capacitor, Charge/Backup Current: >10A
- Programmable Input Current Limit Prioritizes System Load Over Capacitor Charge Current
- All N-FET Charger Controller and PowerPath™ Controller
- Compact 44-Lead 4mm × 7mm QFN Package
