General Description
The EC3653 is a buck boost converter targets HVDC fast charging and discharging power bank.
The EC3653 supports 1 to 3 cells Li-ion battery, the output voltage can be programmable up to 16.0V through external resistor. The EC3653 implements the Buck Boost converter with an H-bridge, which can maintain output regulation for Input voltage whether greater or less than output voltage.
The integrated low Rds(on) MOSFET minimizes physical footprint, maximizes charge/discharge efficiency, which reduces the power dissipation during discharge.
Constant current control is utilized to protect the device from overshooting in unwanted conditions.
Built-in loop compensation simplifies the circuit and design. PFM is engaged to maintain high efficiency at light load current.
EC3653 guarantees robustness with thermal protection and battery under voltage lockout.
Features
◆Integrate low RDS (on) power MOSFET
◆Wide input range: 4.2V-16.0V, Support 1 to 3
◆cells battery charge/discharge.
◆Wide output range:0.9V-16.0V
◆High efficiency buck-boost transition
◆500kHz Switching frequency
◆Programmable output current limit(up to 3A)
◆Output Constant Current Control.
◆Quiescent current: <50uA
◆Integrate output overvoltage protection and
◆output short protection
◆Integrate thermal protection
◆QFN3*4 package
Applications
◆Power bank systems
◆Battery and Super Capacitor Charging
◆USB Power Delivery
◆Industrial applications
◆Automotive Systems
