ET9562 | ETEK Microelectronics

Li-Ion Battery Charger, ET9562, ETEK Microelectronics

The ET9562 is a linear single-cell Li-ion battery charger with integrated power path management. The charger uses a CC/CV charge profile required by Li-ion batteries. It also accepts an input voltage up to 24 V and will cut off rapidly when the input voltage exceeds the OVP threshold (typically 6.0 V). The charger features trickle charge, constant current and constant voltage regulation, charge termination, and charge status indication. The internal power path management can balance the input current between the system and battery, ensuring continuous power to the system from the input, the battery, or both. The ET9562 also integrates dynamic power management. When the system load is heavy, the charge current will be reduced to keep the input current or input voltage within regulation.

The ET9562 provides over-current protection from the input to the system and from the battery to the system. This can prevent the Li-ion battery from being damaged by excessively high current. Input and battery under-voltage lockout (UVLO) will cut off the load path when the power supply is unstable. An integrated I²C control interface allows the ET9562 to program critical parameters, such as battery constant voltage, constant charge current, trickle charge threshold, battery regulation voltage, battery UVLO, input voltage regulation, input current regulation, and system voltage regulation.

Features

• Fully Autonomous Charger for Single-Cell Li-on Battery
• Auto Power Path Management for Powering the System and Charging the Battery
• Integrated Power MOSFETs for System load and Charging Mode
• Thermal Limiting Regulation On-Chip