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reference designTS51224

Semtech TS51224

LinkCharge™ LP Series Wireless Charging

Overview

TopologyWireless Power Transfer
Switching frequency1170-1460 kHz
IC revisionTSWIRX-LI2-EVM Rev.B

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

Products

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760308102308
SPECWE-WPCC Wireless Power Transfer Transmitter Coil, works with Qi Tx IC's, 50 x 30 x 2.4 mm
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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-WPCC Wireless Power Transfer Transmitter Coil
Complianceworks with Qi Tx IC's 
Size50 x 30 x 2.4 mm 
Inductance3 µH
Rated Current8.5 A
DC Resistance35 mΩ
Self Resonant Frequency27 MHz
Q-Factor60 
Power Capability [1]150 W
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