STWLC04:Qi based, 1 W optimized wireless power receiver
The STWLC04 is an integrated wireless power receiver suitable for wearable applications. The STWLC04 is focused on 1-watt power transfer based on Qi protocol with digital control and precise analog control loops ensuring stable operation. Together with the STWBC-WA transmitter, the STWLC04 enables a complete wireless power transmission. I2C interface allows many parameters to be customized in the device and this configuration can be stored in the embedded NVM.
The STWLC04 can deliver the output power in two modes: as a power supply with configured 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.
Key Features
- 1 W output power
- Qi 1.0 wireless communication protocol based
- Integrated high efficiency synchronous rectifier
- 800 kHz programmable step-down converter with input current and input voltage regulation loop
- Step-down converter efficiency up to 90%
- Simplified Li-Ion/Polymer charger function
- 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
- I2
C interface
- Configurable GPIO output
- Rx coil NTC protection
- Thermal protection
- Low power dissipative rectifier overvoltage clamp
- Flip Chip 77 bumps (3.12x4.73 mm)
Product Specifications
Selection Guides
Brochures
Solution Evaluation Tools
Part Number | Manufacturer | Description |
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STEVAL-ISB038V1 | ST | 1 W wearable wireless power system based on STWBC-WA and STWLC04 |
STEVAL-ISB038V1R | ST | 1 W Wearable wireless charger receiver based on STWLC04 |
Sample & Buy
Part Number | Package | Packing Type | Unit Price (US$)
* | Quantity | ECCN (EU) | ECCN (US) | Country of Origin |
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STWLC04JR | Chip Scale Package 0.4mm pitch | Tape And Reel | 1.7 | 1000 | NEC | EAR99 | - |
Quality & Reliability
Part Number | Package | Grade | RoHS Compliance Grade | Material Declaration** |
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STWLC04JR | Chip Scale Package 0.4mm pitch | Industrial | Ecopack2 | |