February 2017

DocID030310 Rev 1

1/7

For further information contact your local STMicroelectronics sales

office

www.st.com

STWLC33

Multi-mode Qi/AirFuel inductive wireless

power receiver with transmitter function

Data brief

Features



Up to 15 W output power in RX mode and 5

W in TX mode



Qi 1.2 and AirFuel inductive wireless

standard communication protocol



Integrated high efficiency synchronous

rectifier



Low drop regulator with output current and

input voltage regulation loop



Total system efficiency up to 80% at 5 V

VOUT



32-bit, 32 MHz ARM Cortex microcontroller

with 32 kB FW memory, 8 kB RAM memory



4 kB NVM for configuration



32 MHz PWM timer



10-bit 8-channel A/D converter



Up to 5 configurable GPIOs



Integrated 5 V LDO for auxiliary features



Precise voltage and current measurements

for FOD function



Overvoltage clamp protection



HW FSK and ASK demodulators





Thermal protection



CSP 3.97x2.67 mm, 400 μm pitch 52 balls

Applications



Phones, PDAs



Power banks



Navigation systems



Wearable devices



Medical and healthcare instrumentation

Description

The STWLC33 is an integrated wireless power

solution suitable for portable applications. The

STWLC33 is able to operate with Qi 1.2 or

AirFuel inductive communication protocol. It can

operate up to 15 W receivers or 5 W transmitters.

Thanks to the integrated low impedance

synchronous rectifier and the low drop out linear

regulator, the STWLC03 achieves high efficiency

many parameters to be customized in the device

and this configuration can be stored in the

embedded NVM.

The CSP package is suitable for very compact

applications.

Table 1: Device summary

Order code

Package

Packing

STWLC33JR

CSP (3.97x2.67 mm) 400 μm pitch 52 balls

Tape and reel

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