STUSB4500QTR - Standalone USB PD Sink Controller, 100W, 24-QFN | STMicroelectronics
MPN: STUSB4500QTR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.62 | $16.20 |
| 100 | $1.24 | $124.00 |
| 500 | $1.02 | $510.00 |
| 1,000 | $0.87 | $870.00 |
| 3,000 | $0.74 | $2,220.00 |
STUSB4500QTR Overview
An autonomous USB Power Delivery (PD) sink controller is a specialized interface IC that allows a device to draw higher-than-default power (beyond the legacy USB 5V/0.9A baseline) through a USB Type-C connector. The STUSB4500QTR occupies the position of sink-side protocol layer within the USB-C ecosystem, sitting between the CC logic of the Type-C receptacle and the downstream DC-DC converter or load switch. It belongs to the broader USB interface IC category, a subset of wired connectivity controllers.
Key features include support for 5V, 9V, 12V, 15V, and 20V PDOs at 5A maximum, integrated short-to-VBUS protection on CC pins (VCONN- and CC1/CC2 tolerant up to 22V), dead-battery signaling for unpowered sinks, and an I2C interface for host configuration and telemetry access. The device is USB-IF certified (TID 1074413) for USB Type-C R2.1 and USB Power Delivery R3.0 compliance, simplifying certification of the end product.
Technically, the STUSB4500QTR combines a USB PD R3.0 physical layer (BMC-encoded on CC), a protocol layer state machine, an embedded 5V LDO for internal supply, and 32-byte user-configurable NVM. It offers dual-mode USB power delivery alongside legacy USB 5V fallback and supports both standard Power Delivery and the proprietary PPS (Programmable Power Supply) source negotiation through the high-resolution request message.
Typical applications include USB-C powered monitors and docking stations, fast-charging smartphones and tablets, IoT gateways, industrial single-board computers, and any product migrating from legacy DC barrel jacks to USB-C. The wide-input tolerance makes it equally suited to 5V-only low-power devices and 20V/5A 100W laptops.
When designing with the STUSB4500QTR, ensure the downstream sink path can handle the negotiated current up to 5A on VBUS. Use 4-wire VBUS routing on the PCB, and decouple the VCC pin with at least 1uF X7R ceramic capacitance close to the exposed thermal pad, which must be soldered to a continuous ground plane for thermal dissipation and short-to-VBUS protection immunity.
This page synthesizes distributor stock data, drop-in alternatives, application notes, and practical design considerations not aggregated on the manufacturer product page or any single distributor listing.
Drop-in alternatives for STUSB4500QTR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with STUSB4500QTR (same form factor and footprint) — differing in Package, Function, Mounting Type, MSL Level, Host Interface.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
STUSB4500QTR
✅ Drop-In✓ In Stock
$0.74 / Unit
View Datasheet →STUSB4500QTR Specifications
| Product Type | Standalone USB Type-C PD Sink Controller |
| USB Standard | USB Type-C R2.1, USB Power Delivery R3.0 |
| USB Speed | USB 1.2 / USB 2.0 (no USB 3.x data) |
| Maximum PD Power | 100 W (20 V / 5 A) |
| Supported PDO Voltages | 5 V / 9 V / 12 V / 15 V / 20 V |
| Role | Sink (UFP) only |
| Host Interface | I2C (Fast-mode 400 kHz) |
| CC Pin VBUS Short Protection | Up to 22 V on CC1, CC2, VCONN- |
| Integrated NVM | Yes (PDO profile configuration) |
| Dead Battery Support | Yes |
| Auto-Run Mode | Yes (MCU-less negotiation) |
| VCONN Source | No (sink only, no VCONN supply) |
| GPIO Pins | 2 (configurable) |
| Package | 24-QFN (4x4 mm) with exposed pad |
| Operating Temperature Range | -40 C to +105 C |
| Supply Voltage (VBUS to VCC internal LDO) | Up to 22 V tolerance |
| Mounting Type | Surface Mount |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
| USB-IF Certification | Yes (TID 1074413) |
STUSB4500QTR Pin Configuration
| Pin 1 | GND — Ground reference |
| Pin 2 | CC1 — USB Type-C Configuration Channel 1 |
| Pin 3 | CC2 — USB Type-C Configuration Channel 2 |
| Pin 4 | VCONN- — Cable eMarker supply (sink role, not used) |
| Pin 5 | VBUS — USB VBUS sense input (up to 22V tolerance) |
| Pin 6 | VCC — Internal 3.3V LDO output; bypass with 1uF X7R |
| Pin 7 | A0 — I2C slave address LSB |
| Pin 8 | GPIO0 — General purpose I/O 0 |
| Pin 9 | GPIO1 — General purpose I/O 1 |
| Pin 10 | SDA — I2C data line |
| Pin 11 | SCL — I2C clock line |
| Pin 12 | RESET — Active-low hardware reset (tie to VCC via 100k) |
| Pin 13 | IRQ — Interrupt request output (active low) |
| Pin 14 | DB_OUT — Dead-battery status output |
| Pin 15 | NC — Not connected (per datasheet) |
| Pin 16 | NC — Not connected (per datasheet) |
| Pin 17 | VBUS_SENSE — VBUS voltage divider sense node |
| Pin 18 | VBUS_OVP — VBUS over-voltage protection input |
| Pin 19 | NC — Not connected (per datasheet) |
| Pin 20 | NC — Not connected (per datasheet) |
| Pin 21 | NC — Not connected (per datasheet) |
| Pin 22 | NC — Not connected (per datasheet) |
| Pin 23 | NC — Not connected (per datasheet) |
| Pin 24 | EP — Exposed pad - must be soldered to GND plane |
Typical Applications
STUSB4500QTR is suitable for 8 applications: USB-C Powered Monitor / Display, Fast-Charging Smartphone / Tablet Cradle, Industrial USB-C Single-Board Computer (SBC), USB-C Docking Station, IoT Gateway with USB-C Power, USB-C LED Lighting Driver, USB-C Power Bank (Sink Input), USB-C Audio Amplifier / Speaker.
USB-C Powered Monitor / Display
The STUSB4500QTR's 100W PD negotiation and autonomous operation make it ideal for USB-C powered monitors that need to draw up to 65W-100W from a laptop or dock. The 24-QFN's exposed pad provides thermal headroom for sustained 5A operation. Designers place the IC near the Type-C receptacle, route CC1/CC2 directly, and feed the negotiated voltage into a buck converter for the panel backlight and logic rails. Per ST AN5465, the integrated short-to-VBUS protection eliminates external TVS diodes on CC lines, reducing BOM cost.
Recommended
Fast-Charging Smartphone / Tablet Cradle
For handheld device cradles that accept USB-C PD up to 100W including PPS, the STUSB4500QTR's PPS support enables 3.3V-21V programmable requests for fast-charging protocols. The autonomous NVM auto-run mode negotiates a 20V/5A contract without firmware intervention, perfect for low-cost cradle designs. Place the IC within 5mm of the USB-C connector to minimize CC trace impedance. The dead-battery mode allows the cradle to be powered from a flat phone on first connection.
Recommended
Industrial USB-C Single-Board Computer (SBC)
Industrial SBCs migrating from DC barrel jacks to USB-C benefit from the STUSB4500QTR's wide 5V-20V PDO set, which eliminates multiple input-voltage variants. The IC negotiates 12V/3A or 20V/5A directly from a USB-C PD adapter, feeding a downstream buck-boost converter. The -40C to +105C operating range suits factory-floor deployment. According to the STUSB4500 datasheet, the integrated 5V LDO powers internal logic from VBUS, removing the need for an external supply rail.
Recommended
USB-C Docking Station
Docking stations that power connected laptops and peripherals benefit from the STUSB4500QTR's 100W sink capability and dead-battery support. The IC negotiates a 20V/5A contract with the host laptop's USB-C PD source and routes the power through a power-mux to charge downstream devices. The integrated short-to-VBUS protection on CC lines is critical when multiple Type-C ports share a common VBUS rail. ST AN5465 confirms the QFN-24 layout with continuous ground plane keeps junction temperature below 90C at 100W.
Recommended
IoT Gateway with USB-C Power
Low-power IoT gateways that need a modern USB-C power input replace legacy micro-USB with the STUSB4500QTR. The IC negotiates a 5V/3A or 9V/2A PDO from any compliant USB-C adapter, simplifying the BOM by removing the need for wide-input buck regulators. The 24-QFN (4x4 mm) footprint fits within the gateway's 30mm x 30mm power section. Per ST datasheet, the device draws less than 5mA quiescent current, preserving standby budget for battery-backed sensors.
Recommended
USB-C LED Lighting Driver
Architectural LED fixtures that accept USB-C PD benefit from the STUSB4500QTR's 100W capability, which directly powers high-brightness LED strings up to 90W via a downstream constant-current driver. Designers configure NVM for a single 20V/5A PDO and feed the negotiated rail to a buck LED driver. The QFN-24's exposed pad provides thermal coupling to the metal housing. ST AN5465 application example achieves >93% end-to-end efficiency using the STUSB4500QTR with a LED2001 driver stage.
Recommended
USB-C Power Bank (Sink Input)
High-capacity power banks that recharge via USB-C PD use the STUSB4500QTR to negotiate up to 100W input from USB-C chargers. The IC's NVM auto-run allows reconfiguration via I2C when battery SoC changes require different request profiles. The integrated 5V LDO powers housekeeping logic before the main charger IC is enabled. Per ST datasheet, the dead-battery mode enables a deeply discharged bank to be revived by a USB-C source even with no battery present.
Recommended
USB-C Audio Amplifier / Speaker
Powered USB-C speakers and headphone amplifiers use the STUSB4500QTR to negotiate up to 60W from a USB-C PD laptop or charger, enabling high-output Class-D amplifier stages. The 100W headroom covers peak music-power transients without supply droop. The exposed pad's thermal mass supports continuous 5A VBUS operation at 20V in enclosed speaker cabinets. ST AN5465 recommends adding a 22uF X7R bypass on VCC to suppress amplifier-induced ripple on the PD contract.
Recommended
Recommended Products Summary
Engineering reference data for STUSB4500QTR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STUSB4500BJR |
|---|---|---|
| Package | 24-QFN (4x4 mm) | 25-BGA (3x3 mm) - different footprint |
| Brand | STMicroelectronics | STMicroelectronics |
| PD Max Power | 100 W (20V / 5A) | 100 W (20V / 5A) |
| PDO Voltages | 5/9/12/15/20 V | 5/9/12/15/20 V |
| MCU Required | No (auto-run) | No (auto-run) |
| PPS Support | Yes | Yes |
| Integrated NVM | Yes | Yes |
| Dead-Battery Mode | Yes | Yes |
| USB-IF Certified | Yes (TID 1074413) | Yes (TID 1074413) |
Key Differentiators
- True MCU-less 100W sink operation (vs FUSB302 (Fairchild/ON Semi))
- Integrated short-to-VBUS protection on CC lines (vs TPS25750 (Texas Instruments))
- USB-IF certified (TID 1074413) with NVM flexibility (vs FUSB302 + external EEPROM)
Design Notes
Route the CC1 and CC2 traces as a 90-ohm differential pair directly from the USB-C receptacle to pins 2 and 3. Keep trace length under 5mm and avoid vias. Stitch the ground plane with 0.5mm-spaced vias around the exposed pad to provide a low-impedance return path and thermal coupling. Place a 1uF X7R 0402 bypass capacitor within 1mm of pin 6 (VCC).
Estimated: at 20V VBUS and 5A continuous load, internal dissipation is under 200mW (no significant switching losses in a sink controller). The 24-QFN's theta_JA of approximately 38 C/W on a 4-layer 1oz PCB yields a junction-to-ambient rise of 7.6 C. The exposed pad must be soldered to a continuous GND plane with at least 9 thermal vias (0.3mm drill, 0.5mm pitch) for reliable operation. Above 70 C ambient, derate to 3A continuous or add a top-side copper pour.
Do not connect the VCONN- pin to VBUS - it is a separate cable-eMarker supply node that should be left floating in sink-only designs. Do not omit the 100k pull-up on RESET (pin 12) - leaving it floating can cause spurious resets during hot-plug events. Ensure I2C pull-ups are 3.3V referenced, not 5V - the SDA/SCL pins are not 5V tolerant. Finally, do not confuse the STUSB4500 (sink-only) with the STUSB4700 (source-only) - same family, different firmware, not interchangeable.
Keep high-current VBUS traces (carrying up to 5A) on a wide polygon with 2oz copper, separated from the CC traces by at least 0.5mm. Use a 4-layer stackup with dedicated GND plane on layer 2 for return-path integrity. Add TVS diodes (e.g., SMBJ24CA) on VBUS if the design must survive >22V transient events from faulty USB-C sources. Per ST AN5465, place the STUSB4500 within 5mm of the Type-C connector to minimize CC trace parasitic capacitance.
Compliance Information
RoHS compliant per ST product page. USB-IF certified (TID 1074413). Not AEC-Q100 qualified - ST does not list automotive grade for this part number.
