DESCRIPTION

The LTC®4124 is a simple high performance wireless Li-Ion charger with low battery disconnect. The pin-selectable charge current (up to 100mA) and charge voltage ensure versatility while minimizing the number of required external components.

FEATURES

■ Complete Wireless Power Receiver, Li-Ion Charger

and PowerPath™ Controller

■ Wireless Input Power Control and Rectification

■ Wideband Wireless Power Frequency: DC to >10MHz

■ Pin-Selectable Charge Current:

10mA/25mA/50mA/100mA

■ Pin-Selectable Charge Voltage: 4.0V/4.1V/4.2V/4.35V

■ Pin-Selectable Low Battery Disconnect: 2.7V/3.2V

■ Zero Battery Drain Current in Disconnect/Ship Mode

■ Pin-Selectable Low Battery Pre-Charge Current Enable

■ NTC Input for Temperature Qualified Charging

■ Safety Charge Termination Timer

■ Tiny Total Solution Size with Few Externals

■ Small Thermally Enhanced 12-lead

2mm × 2mm LQFN Package

APPLICATIONS

■ Medical Wireless Sensors

■ Military Wearables

■ High End Wireless Headsets

■ Streaming Headsets with Bluetooth Connectivity

■ Virtual Reality Headsets

■ High End Remote Control

■ IoT Devices