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Renesas PTX30WCC16D7C1
- Part No.:
- PTX30WCC16D7C1
- Manufacturer:
- Renesas
- Category:
- RFID, RF Access, Monitoring ICs
- Package:
- 16-UFBGA, WLCSP
- Datasheet:
-
PTX30WCC16D7C1.pdf
- Description:
- NFC WLC LISTENER, MCU LDO - 3.3V
- Quantity:
- Payment:
- Shipping:
Inventory:1,390
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Product details
Overview
PTX30WCC16D7C1 from Renesas Electronics is an NFC Wireless Charging Listener IC designed for ultra-low-power wearable and hearable devices. It integrates active rectification, Li-ion battery charging (6–251 mA CC), NFC Forum Type 2 Tag RF interface, MCU LDO (1.8 V/3.3 V, up to 50 mA), and embedded power negotiation logic - enabling standalone operation without external discrete components. It delivers up to 1 W harvested power and supports transparent data channel (TDC) for bidirectional NFC-based communication during charging.
For engineers reviewing the PTX30WCC16D7C1 datasheet, PTX30WCC16D7C1 pinout, PTX30WCC16D7C1 application, or PTX30WCC16D7C1 equivalent, key selection considerations include its WL-CSP16 package, I²C slave interface, NTC-based thermal monitoring, shipping mode leakage <100 nA, and compliance with NFC Forum Wireless Charging v2.0 and Type 2 Tag v1.2 standards.
Technical Context
The PTX30WCC16D7C1 implements a fully integrated NFC listener architecture operating at 13.56 MHz, combining RF power harvesting, protocol handling (WLC v2.0), and battery management in a single die. Its active rectifier achieves high conversion efficiency, while on-chip overvoltage limiter and configurable GPOs enable robust system-level protection and host coordination.
It supports dual power sources - NFC RF field (via RF1/RF2) and battery (VDBAT) - with automatic source selection and seamless state transitions between battery charging, system supply from NFC, standby, and shipping modes. The embedded NTC monitor provides four temperature thresholds (eCold, Cold, Hot, eHot) with dedicated voltage flags and reset hysteresis for safe thermal regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Harvesting Power | Up to 1 W - enables compact antenna design and fast charging in space-constrained wearables. |
| Battery Charging Current | 6–251 mA (configurable CC phase) - supports precise Li-ion charging profiles across diverse battery capacities. |
| NFC Interface Standard | NFC Forum Type 2 Tag v1.2 + Wireless Charging v2.0 - ensures interoperability with certified pollers and legacy NFC infrastructure. |
| MCU LDO Output | 1.8 V or 3.3 V, up to 50 mA - powers external host MCU or sensors without additional regulators. |
| Standby Current | 18–39 µA (depending on UVLO/LDO configuration) - extends shelf life and runtime in always-on low-power systems. |
| Shipping Mode Leakage | <100 nA - minimizes battery discharge during storage and logistics, critical for pre-charged consumer devices. |
| NTC Monitoring | Four-point thermal flagging (eCold/Cold/Hot/eHot) with ±0.025 V hysteresis - enables fail-safe battery temperature supervision per JEITA guidelines. |
| I²C Interface | Up to 1 MHz clock, VDMCU-referenced I/O - allows real-time status readback and runtime parameter updates without host MCU reset. |
Pinout & Package
PTX30WCC16D7C1 is housed in a 2.14 mm × 2.14 mm, 0.4 mm pitch WL-CSP16 package with 12 functional pins and 4 NC terminals. The package supports solder reflow compatibility and minimal PCB footprint for ultra-compact wearables.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDBAT | Battery input connection | Direct connection to Li-ion cell anode; feeds startup circuit and internal charger path. |
| VDDC | System supply output | Buffered output of harvested RF power; supplies host system directly or via external load switch. |
| VDBUFC | Buffer capacitor terminal | Stabilizes VDDC rail; requires external 10 µF ceramic capacitor for ripple suppression. |
| RF1 / RF2 | NFC RF differential input | Connects to matching network; enables 13.56 MHz power reception and demodulation per ISO/IEC 14443-A. |
| VDMCU | MCU LDO output/input | Configurable 1.8 V/3.3 V regulated supply for host MCU; also serves as I²C/GPO reference voltage. |
| NTC | Thermistor sensing input | Measures battery temperature via external NTC; supports B = 3435 K thermistors with precision current source (62–76 µA). |
| VS | Reference ground | Dedicated analog ground return for RF and sensor circuits; must be isolated from digital ground to minimize noise coupling. |
| GPO_0 / GPO_1 | Configurable open-drain outputs | Active-low signals for host alerts or peripheral control; internally pulled up, compatible with 3.3 V logic. |
| SCL / SDA | I²C slave interface | Standard two-wire interface for OEM configuration, runtime status reads, and parameter writes (e.g., BC_ENABLE, BC_ITERM_CTRL). |
| IRQ | Interrupt request output | Active-low pulse signals host MCU on state change (e.g., battery full, error, shipping mode entry). |
| SM | Shipping mode control | Active-low push-button input; triggers ultra-low-leakage shutdown with hardware-level battery isolation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Active Rectifier | Enables >85% RF-to-DC conversion efficiency at 13.56 MHz, reducing thermal load and antenna size requirements. |
| Configurable Battery Charger | Supports full CC/CV Li-ion profile with programmable termination current (5–82 mA), recharge threshold (2.91–4.42 V), and trickle-to-CC transition (2.5–3.2 V). |
| Transparent Data Channel (TDC) | Allows bidirectional NFC data exchange (e.g., firmware update, sensor telemetry) concurrent with wireless power transfer - no time multiplexing required. |
| Embedded Overvoltage Limiter | Hardware-level clamping on VDDC prevents damage from RF overvoltage events without software intervention or external TVS diodes. |
| Custom NDEF Record Support | Enables OEM-defined NFC records (e.g., device ID, calibration data, usage logs) readable by standard NFC readers without proprietary drivers. |
| Standalone Operation Mode | Operates without host MCU - handles charging, thermal protection, and polling response autonomously using internal state machine and memory. |
Applications
| Smartwatches & Fitness Trackers | True Wireless Earbuds |
|---|---|
|
Use Scenario: Compact wrist-worn device requiring maintenance-free charging via NFC-enabled surfaces (e.g., desks, car mounts). IC Role / Device Role / Timing Role: NFC Listener IC managing power harvesting, Li-ion charging, and host system supply - eliminating need for separate charger IC and NFC transceiver. Use Value: Enables sub-10 mm thickness and 7-day battery life with zero USB ports or proprietary chargers. |
Use Scenario: Charging case with integrated NFC poller powering earbuds inside during storage. IC Role / Device Role / Timing Role: Listener IC in earbud housing that harvests power, charges 3.7 V/50 mAh battery, and reports charge status via TDC to case MCU. Use Value: Eliminates contact-based pogo pins and enables simultaneous charging + firmware sync over same NFC link. |
| Smart Rings & Stylus Pens | Hearing Aids & Medical Sensors |
|
Use Scenario: Ultra-miniaturized ring-shaped wearable with no physical connectors and strict volume constraints. IC Role / Device Role / Timing Role: Primary power management IC providing battery charging, ultra-low-leakage shipping mode (<100 nA), and NTC-based thermal safety. Use Value: Supports 12-month shelf life and safe operation at skin-contact temperatures (up to 45°C ambient). |
Use Scenario: Class II medical hearing aid requiring CE/FDA-compliant wireless charging and battery health monitoring. IC Role / Device Role / Timing Role: Safety-critical listener IC performing battery voltage/temperature validation, CV termination, and error-flagged WLC Listen Control Records. Use Value: Meets IEC 62366 usability requirements and eliminates risk of overcharge or thermal runaway in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NFC wireless charging listener applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ST25DV04K | EEPROM + NFC interface only; no power harvesting, no battery charger, no LDO - requires external PMIC and rectifier. | Limited to data-only NFC use cases; cannot replace PTX30WCC16D7C1 in wireless charging systems. | Select only when NFC data logging is needed alongside a separate charging solution. |
| NXP PN7160 | NFC controller with host-driven power management; lacks integrated rectifier, charger, and autonomous shipping mode. | Requires host MCU for all charging decisions and thermal monitoring - increases firmware complexity and BOM count. | Choose if existing platform already uses NXP NFC stack and can accommodate external power management ICs. |
Compared with ST25DV04K and PN7160, the PTX30WCC16D7C1 uniquely integrates harvesting, charging, regulation, and protocol handling - reducing component count by ≥4 ICs and enabling true single-chip NFC wireless charging in wearables under 1 cm³.
Availability
PTX30WCC16D7C1 is available at Aetrix Electronics and suitable for smartwatches, true wireless earbuds, and medical hearing aids requiring stable component supply, long-term lifecycle support, and automotive-grade reliability in miniaturized form factors.
Supply support for PTX30WCC16D7C1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics is a global semiconductor leader delivering microcontrollers, analog, power, and connectivity solutions for automotive, industrial, and IoT markets.
The PTX30WCC16D7C1 belongs to Renesas' NFC Wireless Charging portfolio, engineered specifically for battery-powered wearables and hearables needing contactless energy and data transfer in sub-3 mm height packages.
FAQ
What is the primary function of the PTX30WCC16D7C1 in an NFC wireless charging system?
The PTX30WCC16D7C1 serves as the NFC Wireless Charging Listener IC - it receives 13.56 MHz RF power from a poller, converts it to DC via integrated active rectification, charges a Li-ion battery (6–251 mA), supplies system power (VDDC/VDMCU), and handles NFC Forum v2.0 protocol negotiation. It operates autonomously or with optional host MCU coordination via I²C, making it the central power and communication hub for wearables without external charging ICs.
Does the PTX30WCC16D7C1 support both power harvesting and data communication simultaneously?
Yes, the PTX30WCC16D7C1 supports Transparent Data Channel (TDC), enabling bidirectional NFC data exchange - such as firmware updates or sensor readings - concurrently with wireless power transfer. This is achieved using standardized T2T commands or proprietary PTX commands, eliminating time-division multiplexing and ensuring uninterrupted charging while communicating.
What thermal protection mechanisms does the PTX30WCC16D7C1 implement?
The PTX30WCC16D7C1 features integrated NTC-based thermal monitoring with four configurable thresholds (eCold, Cold, Hot, eHot) and hysteresis. When junction temperature reaches 120°C, it enters Chip Over-Temperature state, detuning the RF interface (low-ohmic RF1–RF2 short) to halt power absorption while maintaining system supply. Recovery occurs automatically at 100°C, and all flags are reportable via I²C or WLC Listen Control Record.
Can the PTX30WCC16D7C1 operate without an external host MCU?
Yes, the PTX30WCC16D7C1 supports standalone operation: it autonomously manages battery charging (CC/CV), shipping mode activation, thermal protection, error reporting, and NFC polling responses using its internal state machine and non-volatile configuration. An external host MCU is optional and used only for advanced customization (e.g., dynamic parameter updates, custom NDEF records) via I²C.
What is the significance of the 'C1' suffix in PTX30WCC16D7C1?
The 'C1' suffix in PTX30WCC16D7C1 denotes the specific revision and test grade of this WL-CSP16 variant - indicating compliance with Renesas' production release R35DS0090EU0102 Rev.1.02 (Sep 4, 2024), including validated electrical specs, thermal performance, and NFC Forum certification for Wireless Charging v2.0 and Type 2 Tag v1.2 interoperability.
PTX30WCC16D7C1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 16-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- RFID Reader
- Frequency:
- 13.56MHz
- Standards:
- ISO 14443-3A, NFC
- Interface:
- I2C
- Voltage - Supply:
- 3.3V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-WLCSP (1.78x1.78)
PTX30WCC16D7C1 FAQ
1.How can I place an order for PTX30WCC16D7C1 through Aetrix?
Please submit a Request for Quotation (RFQ) for PTX30WCC16D7C1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PTX30WCC16D7C1 reliable?
The price and inventory of PTX30WCC16D7C1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PTX30WCC16D7C1 is usually 5 days.
3.What payment methods are accepted for PTX30WCC16D7C1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PTX30WCC16D7C1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PTX30WCC16D7C1?
PTX30WCC16D7C1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PTX30WCC16D7C1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PTX30WCC16D7C1?
For technical support, including PTX30WCC16D7C1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PTX30WCC16D7C1 requirements.
6.How does Aetrix verify that PTX30WCC16D7C1 is sourced from the original manufacturer or authorized distributors?
All PTX30WCC16D7C1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PTX30WCC16D7C1 meets industry standards.
7.What is the process for return or replacement of PTX30WCC16D7C1?
All PTX30WCC16D7C1 units undergo pre-shipment inspection (PSI). If there is an issue with PTX30WCC16D7C1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PTX30WCC16D7C1 part is unused and in its original packaging.
Return procedure for PTX30WCC16D7C1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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