ET9513C | ETEK Microelectronics

Li-Ion Battery Charger, ET9513C, ETEK Microelectronics

The ET9513C is a cost-effective, fully integrated single-cell Li-ion battery charger. The charger uses a CC/CV charge profile required by Li-ion batteries. The charger accepts an input voltage up to 28 V but is disabled when the input voltage exceeds the OVP threshold, typically 6.9 V, to prevent excessive power dissipation. The 28 V rating eliminates the over-voltage protection circuit required in a low-input-voltage charger. The charge current and the end-of-charge (EOC) current are programmable with external resistors. When the charge current reduces to the programmable EOC current level during the CV charge phase, an EOC indication is provided by the CHGSB pin, which is an open-drain output. An internal thermal foldback function protects the charger from any thermal failure.

Features

• An internal top off timer
• Status Pin Indicator
• Programmed Charging Current
• Programmed End-of-Charge Current
• Under Voltage Lockout
• Over Voltage Protection
• Over Temperature Protection
• Reverse Current Blocking