STWLC38JRM

Power Management - Specialized Overview

The STWLC38JRM is a Qi-compliant inductive wireless power receiver IC from STMicroelectronics, designed for applications up to 15 W. It features an integrated low-loss synchronous rectifier and a low-dropout linear regulator dynamically managed by a digital core to minimize power dissipation. The device includes embedded RRAM nonvolatile memory for I²C interface customization and proprietary protocol support. It operates with a 32-bit, 64 MHz Arm Cortex-M0+ core and supports output voltages from 4 V to 12 V. The component is housed in a WLCSP40 package measuring 2.12 mm x 3.32 mm.

Power Management - Specialized Feature Summary

• High-efficiency synchronous rectifier with typical efficiency of 98% at operating frequencies up to 800 kHz
• Embedded Resistive RAM (RRAM) enabling I²C interface customization and firmware patching for application flexibility
• Adaptive Rectifier Configuration (ARC) mode to enhance spatial freedom during charging alignment
• Accurate current sense system supporting Foreign Object Detection (FOD) with overcurrent, thermal, and overvoltage protections

Power Management - Specialized Applications

• Smartphones requiring up to 15 W wireless charging
• Wearable devices and ear-worn audio equipment
• Asset tracking devices
• Medical equipment requiring sealed designs

Power Management - Specialized Procurement Notes

Verify the specific ordering suffix and package variant when sourcing, as availability may vary between cut tape, reel, or MouseReel formats. Confirm RoHS compliance status through official documentation prior to integration. Ensure that the selected quantity aligns with factory packaging requirements if ordering in bulk volumes. Cross-reference the manufacturer part number with distributor listings to confirm active status and lead time constraints.

Power Management - Specialized Selection Notes

Select this component for space-constrained designs due to its small WLCSP40 footprint. It is suitable for systems requiring high efficiency and programmable output voltages between 4 V and 12 V. The integrated ARM Cortex-M0+ core allows for complex protocol handling and custom firmware updates via I²C. Consider the device's ability to operate in transmit mode for peer-to-peer charging scenarios if bidirectional power transfer is required.

Power Management - Specialized Part Context

The STWLC38JRM belongs to the STWLC series of wireless charging receivers from STMicroelectronics. This series targets the growing market for compact consumer electronics and IoT devices. The JRM suffix typically denotes the specific package and tape/reel configuration offered by distributors. It complements transmitter solutions like the STWBC86 within the broader wireless power ecosystem.

Power Management - Specialized Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. For alternative solutions, consult STMicroelectronics' official product selector for other models within the STWLC family that match specific power or package requirements.