HX6610S IC – Lithium Battery Charging IC – Single-Cell – eSOP-8 – Hengjiaxing

The HX6610S IC is a Lithium Battery Charging IC and a highly integrated, efficient, and reliable single-cell lithium-ion battery charger that features reverse polarity protection and constant current/constant voltage (CC/CV) linear control. Designed with minimal external components, this charger is ideal for portable applications and can be powered via USB or an adapter. The HX6610S IC Lithium Battery Charging IC utilizes an internal PMOSFET architecture, eliminating the need for external detection resistors and isolation diodes. It automatically adjusts the charging current to maintain optimal chip temperature during high-power operations or under elevated ambient conditions.

Features:

• Presets 4.22V ±1% charging voltage
• Externally adjustable charging voltage up to the input voltage
• Trickle/constant current/constant voltage three-stage charging, adjustable current, max 1A
• Maximum input voltage: 7V
• Supports 0V battery charging
• Standby current less than 1µA
• Short circuit protection function
• OVP function, stops charging if input exceeds 6.2V
• BAT-VDD voltage backflow prevention function
• Battery reverse polarity protection
• Intelligent temperature control, reducing charging current with rising temperature, no overheating
• Soft start limits inrush current
• Direct USB charging for single-cell lithium-ion batteries
• Automatic recharging
• Supports 1-light mode and 2-light mode
• Highly integrated, minimal peripheral components required
• Available in ESOP-8 (HX6610S) and DIP-8 (HX6610D) packages