NXP Semiconductors PTN5100DBSMP

Overview

PTN5100DBSMP from NXP Semiconductors is a single-port USB Type-C Power Delivery PHY and Protocol IC that implements the physical layer (BMC/4B5B/CRC) and protocol layer (packet assembly/disassembly, retries, resets) for USB PD 2.0 and Type-C specifications. It serves as the hardware engine for a discrete Policy Engine MCU in UFP, DFP, or DRP roles, supports VBUS source/sink FET control via three open-drain outputs, and operates from either VDD (3.3 V ±10%) or VBUS (up to 25 V), enabling dead-battery operation in portable accessories.

For engineers reviewing the PTN5100DBSMP datasheet, PTN5100DBSMP pinout, PTN5100DBSMP application, or PTN5100DBSMP equivalent, key selection considerations include its HVQFN20 package with exposed thermal pad, SPI/I2C interface configurability (factory-set), CC_ORIENT cable orientation indication, 30 mA V_MCUPWR output for policy MCU supply, and 5.5 V-tolerant CC pins requiring external TVS protection.

Technical Context

The PTN5100DBSMP integrates a dedicated USB PD PHY with BMC encoding/decoding, 4B5B symbol conversion, CRC generation/checking, and SOP/EOP/GCR handling, offloading timing-critical functions from the host MCU. Its CC block implements Rp/Rd pull-up/down per role configuration, plug detection with debouncing, and orientation sensing via CC_ORIENT.

It delivers gate control signals (EN_USBSRC, EN_USBFET1, EN_USBFET2) for external PMOS power path FETs, supports dual power domains (VDD core, VIO I/O), and enables system-level flexibility through register-programmable PD roles (Consumer only or Consumer/Provider), I2C slave address selection (3 options), and dead-battery operation using VBUS as sole supply.

Key Specifications

Pinout & Package

HVQFN20 package (SOT917-4) with 4 mm × 4 mm body, 0.5 mm pitch, and exposed center thermal pad requiring solder connection to PCB ground plane for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar USB-C PD PHY applications.

Compared with STUSB4500 and TUSB8041A, PTN5100DBSMP provides explicit separation of PHY and policy layers, enables MCU-supplied power via V_MCUPWR, delivers cable orientation via CC_ORIENT, and fits into ultra-compact HVQFN20 layouts-making it optimal for discrete, flexible, and thermally constrained USB-C peripheral designs.

Availability

PTN5100DBSMP is available at Aetrix Electronics and suitable for USB-C docking stations, mobile monitor adapters, external SSD enclosures, and multi-function peripheral hubs requiring stable component supply, long-term lifecycle support, and compliance with USB-IF certification requirements.

Supply support for PTN5100DBSMP 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

NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and consumer applications, with leadership in USB, NFC, and edge processing technologies.

The PTN5100DBSMP belongs to NXP's USB Type-C Power Delivery PHY product line, designed specifically to accelerate time-to-certification for USB-C accessories by offloading protocol timing-critical functions from host MCUs while maintaining full configurability for UFP/DFP/DRP roles.

FAQ

What is the primary function of the PTN5100DBSMP in a USB-C system?

The PTN5100DBSMP serves as a dedicated USB Type-C Power Delivery PHY and Protocol IC that implements the physical layer (BMC encoding/decoding, 4B5B symbol conversion, CRC) and protocol layer (packet assembly/disassembly, retries, resets) functions. It works alongside a discrete policy controller MCU to handle CC negotiation, VBUS FET control, and cable orientation detection-enabling compliant USB-C PD operation in UFP, DFP, or DRP roles. The PTN5100DBSMP does not include an embedded policy engine.

How does the PTN5100DBSMP support dead-battery operation in portable devices?

The PTN5100DBSMP supports dead-battery operation by drawing power directly from the USB VBUS line (3.7–25 V) instead of relying on the platform's VDD supply. In this mode, it implements Rd pull-down behavior on the CC pins to allow enumeration and initial PD negotiation even when the host device's battery is fully depleted. The PTN5100DBSMP remains functional with all interfaces active when powered solely by VBUS and VIO, though V_MCUPWR output is disabled in this configuration.

Which interface-SPI or I2C-is used by the PTN5100DBSMP, and how is it selected?

The PTN5100DBSMP supports either SPI or I2C communication with the host MCU, but only one interface is active per device-selected at NXP factory during manufacturing. SPI mode supports up to 30 MHz with modes 1 and 2; I2C mode supports standard (100 kHz), fast (400 kHz), and fast-mode-plus (1 MHz) speeds. The interface choice is fixed per part number variant and cannot be changed in-system. For PTN5100DBSMP, the interface is SPI, as indicated by ordering option [2] in the datasheet.

What is the purpose of the CC_ORIENT pin on the PTN5100DBSMP, and how is it initialized?

The CC_ORIENT pin on the PTN5100DBSMP is a CMOS output that indicates USB-C cable plug orientation: LOW signifies normal orientation (CC1 active), HIGH signifies reverse orientation (CC2 active). Its polarity is inverted at power-on reset, so the policy controller MCU must initialize the PTN5100DBSMP via SPI/I2C before the pin level becomes valid. After initialization, the pin reliably reflects orientation and remains stable during hot-plug events, enabling software to route CC communication correctly.

Does the PTN5100DBSMP integrate power FET drivers, and what voltage ratings do they support?

The PTN5100DBSMP does not integrate power FET drivers but provides three dedicated open-drain gate control outputs-EN_USBSRC, EN_USBFET1, and EN_USBFET2-for driving external high-side PMOS power path FETs. These pins are rated to 28 V absolute maximum and operate with active-low logic. They are designed to interface directly with common 5–20 V VBUS power paths without level-shifting circuitry, and their status (asserted/de-asserted) is monitored and updated in internal registers for MCU visibility.