LY6395

LY6395 is a fully integrated power management IC designed for Bluetooth charging cases, incorporating lithium battery charge management, a synchronous boost converter, battery fuel gauge, and protection function modules. The IC integrates an input overvoltage protection circuit with an OVP threshold of 6.1V and a VIN input voltage rating up to 30V. It supports Hall sensor direct-drive control of the EN pin, enabling automatic reconnection of earphones upon case opening, LED illumination for 8 seconds upon case opening, and automatic boost activation upon case closing. The EN pin can also be used to control the OUT output for one-way communication. Charge current is configurable via an external resistor on the ISET pin, ranging from 180mA to 450mA, with a maximum discharge current of 600mA. It supports direct MCU readout of charging, fully charged, discharging, and standby status.

Applications

• Bluetooth earphone charging case
• Power bank
• Charging and boost output applications

Key features

• Integrated input OVP, VIN withstand voltage 30V
• Hall sensor direct drive control support
• Hall-triggered lid-open LED activation (8s) with auto boost enable on lid close
• Standby current 7uA
• Standby voltage: VBAT/0V
• Charging current: 180mA~450mA adjustable
• Maximum discharge current 600mA
• MCU direct readout of charge/discharge status
• Auto earbud-in-case detection, light-load auto shutdown
• Output OVP, short-circuit, and OCP
• Intelligent temperature control
• Boost efficiency up to 93%
• ESOP8 package