STWLC04 Datasheet, PDF (1/18 Pages) STMicroelectronics – Qi based, 1 W optimized wireless power receiver

STWLC04
Qi based, 1 W optimized wireless power receiver
Data brief
 Configurable GPIO output
 Rx coil NTC protection
 Thermal protection
 Low power dissipative rectifier overvoltage
clamp
 Flip Chip 77 bumps (3.12x4.73 mm)
Applications
 Wearable applications
 Smart watches
 Glasses
 Medical and healthcare instrumentation
Features
Description
 1 W output power
 Qi 1.1 wireless standard communication
protocol based
 Integrated high efficiency synchronous
rectifier
 800 kHz programmable step-down converter
with input current and input voltage
regulation loop
The STWLC04 is an integrated wireless power
receiver suitable for wearable applications. The
device is designed for 1-watt power transfer
based on the Qi protocol, with digital control and
precise analog control loops ensuring stable
operation. The I²C interface allows a high degree
of customization and settings can be stored in the
embedded non-volatile memory.
 Step-down converter efficiency up to 90%
The STWLC04 can deliver the output power in
 Simplified Li-Ion/Polymer charger function
two modes: as a power supply with configured
 32-bit, 16 MHz embedded microcontroller
with 16 kB ROM and 2 kB RAM memory
 2 kB NVM for customization
 Integrated driver for external supply switch
 Precise voltage and current measurements
for received power calculation
output voltage or as a simple CC/CV battery
charger with configurable charging current,
charging voltage and termination current. The
STWLC04 can detect the external (wired) power
supply connection and drive an external power
switch.
 I²C interface
Table 1: Device summary
Order code
Description
Package
Packing
STWLC04JR
Wearable optimized 1 W output
Flip Chip 77 bumps (3.12x4.73 mm)
Tape and reel
September 2016
DocID029626 Rev 2
For further information contact your local STMicroelectronics sales
office
1/18
www.st.com