The RT9536GQW is a highly integrated single-cell Li-ion battery charger IC from Richtek USA Inc. It is designed for portable applications where space and efficiency are critical. This device integrates a synchronous buck converter to efficiently charge single-cell Li-ion batteries and provides comprehensive protection features.

Applications

• Smartphones: Battery charging in mobile phones.
• Tablets: Battery charging in tablet computers.
• Portable media players: Charging MP3 players and other portable devices.
• Power banks: Charging power banks and external battery packs.
• Wearable devices: Charging smartwatches, fitness trackers, and other wearable devices.

Features

• Synchronous buck converter: High-efficiency charging reduces heat generation.
• Single-cell Li-ion battery charger: Designed specifically for single-cell Li-ion batteries.
• Input over-voltage protection (OVP): Protects the IC from excessive input voltage.
• Output over-voltage protection (OVP): Protects the battery from overcharging.
• Over-current protection (OCP): Protects the IC and battery from excessive current.

Benefits

• Fast charging: High-efficiency charging reduces charging time.
• Extended battery life: Optimized charging algorithms prolong battery lifespan.
• Enhanced safety: Comprehensive protection features prevent battery damage.
• Small footprint: Compact design allows for integration into small form-factor devices.
• Simplified design: Highly integrated solution reduces external component count.

Additional Details

The RT9536GQW typically operates with an input voltage range compatible with USB power sources. Key specifications include the charging current, charging voltage, and switching frequency. It employs a sophisticated charging algorithm that optimizes charging efficiency and battery lifespan. It includes thermal shutdown protection to prevent overheating. The device is available in a compact QFN package for efficient heat dissipation and small footprint. The charging current can be programmed externally using resistors, allowing for customization based on battery capacity and charging requirements. It also features a power good indicator to signal the completion of the charging cycle.