Semtech TS51224

Description

TS51224 is a fully-integrated wireless power receiver and battery charger for low-power, wearable applications that require a low-cost and space-saving solution. The TS51224 can operate by itself as a single-chip wireless power receiver in proprietary applications. It can also operate in conjunction with a wireless power controller or an application microcontroller to support the Qi or A4WP wireless charging standards as well as proprietary standards up to 2W combined system/battery power.

Features

• 40V maximum input voltage
• Single-cell Li-Ion or Li-Polymer charger with programmable charging current and topoff voltage
• System rail available with deeply discharged battery
• Integrated switches for narrow VDC power path management
• Supports Qi, Resonant (A4WP) and proprietary charging standards
• Up to 2W combined system/battery power
• Better than 87% AC-DC efficiency to the system
• Better than 83% AC-DC efficiency to the battery
• Integrated switches for load modulation
• Integrated frequency detection to support bidirectional communication
• TX to RX CPU alert or reset signal
• Integrated minimum load current sink
• Thermal shutdown at 130°C junction temperature and over-current protection
• Low external component count
• Junction operating temperature -40°C to 125°C
• Product is lead-free, halogen-free, RoHS / WEEE compliant

Typical applications

• Wearables (Watches, Bracelets, Fitness Bands, Smart Jewelry, Smart Glasses) / Tablets / ID Tags
• Health Monitors / Medical Applications
• Augmented Reality
• Electric Toothbrushes
• Wireless Keyboard and Mouse / Wireless Headsets

More information

• Datasheet
• IC product information