STWLC68 STMicroelectronics Integrated Circuit (Other) In Stock
STWLC68 is a Qi-compliant wireless power receiver IC designed for 5 W inductive charging applications, integrating a rectifier, LDO regulator, and control logic in a compact WLP package. It supports communication back to the transmitter over 100 kHz to 250 kHz load modulation and includes over-voltage and over-temperature protection. Available from stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Other
- Pin Count
- 72
- Lifecycle
- ACTIVE
- Datasheet
- STWLC68 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Qi v1.2 compliant wireless power receiver supporting 5 W baseline power profiles for interoperability
- Integrated rectifier, LDO, and control logic reducing external component count to under 10 passives
- Back-channel communication over 100 kHz to 250 kHz load modulation for transmitter power negotiation
- Over-voltage, over-current, and over-temperature protection safeguarding the receiving device battery
Applications
STWLC68 is used in smartphones, wireless earbuds, and smartwatches that require Qi-standard 5 W wireless charging without a wired connector. Its integrated power path and protection circuitry reduce BOM complexity for wearable device designers who need a fully compliant wireless charging solution in a small footprint. The device also appears in industrial handheld scanners and medical wearables where sealed enclosures prevent the use of traditional charging connectors.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for STWLC68:
Frequently Asked Questions
What wireless charging standard and power level does STWLC68 support?
STWLC68 is compliant with the Qi v1.2 specification and supports the 5 W baseline power profile. It communicates with a Qi transmitter via load modulation at frequencies between 100 kHz and 250 kHz, enabling both power delivery negotiation and foreign-object detection handshake protocols required by the Wireless Power Consortium standard.
How does STWLC68 protect a lithium-ion battery during wireless charging?
STWLC68 integrates over-voltage protection, over-current limiting, and over-temperature shutdown to prevent damage to the host battery during wireless charging. If the rectified output voltage exceeds the programmed threshold or the junction temperature rises above approximately 125 °C, the device halts power transfer and signals the transmitter to reduce field strength, protecting a 3.7 V Li-ion cell from unsafe charge conditions.
For a sealed wearable with no charging port, how does STWLC68 simplify the hardware design?
STWLC68 integrates the rectifier, LDO post-regulator, and Qi communication block into a single IC, reducing the external component count needed for a complete 5 W wireless charging receiver to fewer than 10 passive components. This high integration enables a sealed IP68 wearable to receive power inductively through the case, eliminating the connector seal engineering and waterproofing complexity associated with wired USB or POGO-pin charging ports.
What distinguishes STWLC68 from wired USB charging controllers in a smartwatch BOM?
Unlike a wired USB charging controller that requires a physical connector, ESD protection diodes, and connector retention hardware, STWLC68 uses inductive coupling at 100 kHz to 250 kHz to transfer up to 5 W through the device chassis. This eliminates 3 to 5 BOM line items, reduces PCB area by removing the USB receptacle footprint, and enables thinner device profiles since no connector cutout is needed in the housing.
Related Guides
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
ADAQ7768-1 Design Guide for Precision Vibration and Dynamic Signal Measurement
Design ADAQ7768-1 precision data acquisition channels for vibration and dynamic sensing with the right bandwidth, reference, clock, and layout choices.
Jun 30, 2026
AD5204BRZ10 Design Guide for SPI-Controlled Gain and Offset Calibration
Design AD5204BRZ10 digital potentiometer calibration loops with bounded trim span, safe wiper current, clean SPI routing, and reliable startup codes.
Jun 30, 2026
Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”