LY6294ED

This product is a fully integrated power management IC for Bluetooth charging cases, incorporating lithium battery charging management, a synchronous boost converter, battery fuel gauge, and protection function modules. It supports direct Hall sensor drive control of the enable pin, enabling automatic headphone reconnection on case open, 8-second LED illumination on case open, and automatic boost activation on case close — all without external MOSFETs, transistors, or other output loop control circuits. The IC also supports MCU control of the enable pin for fast output on/off switching to facilitate communication between the charging case and earphones, eliminating the need for external control MOSFETs and current discharge MOSFETs.

Applications

• Bluetooth earphone charging case
• Portable lithium battery applications

Key features

• Supports direct drive control via Hall sensor or MCU
• Works with Hall sensor to enable lid-open light-on for 8 seconds and auto-activate boost on lid close
• Standby voltage configurable to battery voltage or 2V
• Light-load auto-shutdown current: 7mA
• Standby current: 4uA
• Selectable charging current: 0.2A, 0.3A, 0.4A, 0.9A
• Maximum discharge current: 1A
• Output overvoltage, short-circuit, and overcurrent protection
• Intelligent temperature control
• Supports 1 to 4 LED battery indicators
• Boost efficiency up to 93%
• ESOP8 package