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onsemi FUSB3307D45A0AFMNWTWG
- Part No.:
- FUSB3307D45A0AFMNWTWG
- Manufacturer:
- onsemi
- Category:
- Controllers
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
FUSB3307D45A0AFMNWTWG.pdf
- Description:
- 45W USB TYPE-C PD SOURCE CONTROL
- Quantity:
- Payment:
- Shipping:
Inventory:2,434
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Product details
Overview
FUSB3307D45A0AFMNWTWG from onsemi is a USB Power Delivery 3.0 adaptive source charging controller in 20-pin QFNW (4×4 mm, 0.5 mm pitch) package, implementing full PD 3.0 v2.0 and Type-C 2.0 compliance with Programmable Power Supply (PPS) support. It regulates output voltage from 3.3 V to 21 V and current up to 5 A via CV/CC control, drives N-channel MOSFET load switches, and integrates CC1/CC2 detection, VCONN OCP, and dual OTP protection - deployed in AC-DC wall adapters and automotive DC-DC car chargers.
For engineers reviewing the FUSB3307D45A0AFMNWTWG datasheet, pinout, applications, or equivalent options, key selection considerations include its 45 W power level, D+/D− BC1.2 mode configuration, −40°C to +85°C operating range, integrated BMC PHY and Policy Engine, and QFNW package thermal performance (RJA = 36.1°C/W).
Technical Context
The FUSB3307D45A0AFMNWTWG embeds a complete hardware-based USB PD 3.0 Device Policy Manager (DPM), Policy Engine, Protocol Stack, and BMC PHY - eliminating need for external microcontroller. It implements PPS voltage steps down to 20 mV and supports adaptive UVP/OVP with programmable blanking times (e.g., tBNK−OVP3 = 56 ms) and configurable discharge timing (tDISC3 = 56 ms).
Its analog front-end includes dual 10-bit ADC channels monitoring VBUS voltage (via VFB), output current (via IS+/IS−), internal die temperature (TI_OTP = 135°C), and external NTC thermistor (INTC = 60 µA). Gate driver delivers 24.5 V high-level output at 21 V VCC to drive back-to-back N-FETs with low RDS(on) optimization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Compliance | PD 3.0 v2.0 and Type-C 2.0 compliant - supports full PPS negotiation, BMC encoding/decoding, and Sink attach detection without host MCU. |
| Output Voltage Range | 3.3 V to 21 V (±5%) - enables USB PD PPS contracts including 5 V/9 V/12 V/15 V/20 V profiles with 20 mV step resolution. |
| Max Output Current | 5 A - supported by internal current-sense amplifier (gain = 40 V/V) and 5 mΩ sense resistor, with ICS−5A = 5.00 A threshold. |
| Protection Features | UVP/OVP/OCP/CC_OVP/VCONN_OCP/I_OTP/E_OTP - includes adaptive blanking (e.g., tBNK−UVP = 200 ms) and fault recovery (t2S_AR_NM = 2 s). |
| Package & Thermal | 20-pin QFNW (4×4 mm, 0.5 mm pitch) - RJA = 36.1°C/W enables 45 W operation at TA = 85°C with minimal heatsinking. |
| Operating Temperature | −40°C to +85°C - qualified for commercial-grade wall chargers and automotive cabin-mounted DC-DC chargers. |
| Interface Pins | CC1/CC2 (330 µA sourcing), D+/D− (BC1.2 mode), PDIV0/PDIV1/PDIV2 (PDP selection), NTC (60 µA bias) - enables flexible USB-C port policy configuration. |
Pinout & Package
Package: 20-pin QFNW (4×4 mm body, 0.5 mm pitch, exposed thermal pad), case 484AT. Pinout validated per onsemi datasheet Figure 4 (QFN top/bottom view) and Table 5 (Pin Function Description).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 14) | Supply input | Monitors output voltage rail (3.3–21 V); powers internal bias circuitry and enables VDD regulation. |
| VDD (Pin 4) | Internal regulator output | Stable 5 V supply for core logic; requires 1 µF external capacitor to GND. |
| CATH (Pin 12) | Opto-coupler feedback | Drives opto-coupler cathode on AC-DC secondary side or connects to DC-DC COMP/FB pin for direct regulation. |
| VFB (Pin 11) | CV sensing input | Connects to 1:10 resistor divider on VBUS; reference voltage scales with VCC (e.g., 2.000 V at 20 V). |
| IFB (Pin 9) | CC sensing input | Non-inverting input of current-loop error amplifier; interfaces with external compensation network. |
| IS+ / IS− (Pins 6 / 10) | Current sense differential inputs | Direct connection to 5 mΩ shunt; supports 5 A max output with 50 mA step resolution. |
| GATE (Pin 3) | N-FET gate driver | Drives back-to-back N-channel MOSFETs; output swing up to 24.5 V at 21 V VCC. |
| DISC (Pin 5) | VBUS discharge control | Open-drain sink (250 mA) enabling controlled VBUS ramp-down per USB-C spec using external 39 Ω resistor. |
| CC1 / CC2 (Pins 7 / 8) | Type-C configuration channel | 330 µA pull-up for Rp advertisement; integrated 6 V OVP and 15 pF receiver capacitance for noise immunity. |
| D+/PDIV1 & D−/PDIV0 (Pins 20 / 2) | BC1.2 or PDP selection | Configurable as USB 2.0 D+ and D− lines or as digital inputs to select PD power profiles (e.g., 45 W). |
| PDIV2 (Pin 16) | PDP selection input | Third binary input enabling full 3-bit PDP coding (e.g., 45 W, 60 W, 90 W variants). |
| NTC (Pin 15) | External temperature sense | 60 µA current source for 3.293 kΩ NTC; enables PCB or connector thermal monitoring with 90 ms debounce. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated PD 3.0 stack | Hardware Policy Engine + BMC PHY eliminates need for external MCU - reduces BOM cost and firmware validation effort. |
| PPS voltage control | 20 mV step resolution across 3.3–21 V range enables precise battery charging profiles and dynamic voltage scaling. |
| Low-loss current sensing | Supports 5 mΩ shunt resistor - minimizes power loss (<25 mW at 5 A) and improves system efficiency. |
| Robust CC line protection | CC1/CC2 rated to 26 V with 6 V OVP clamping and 4 kV HBM ESD - withstands accidental VBUS shorts in compact USB-C connectors. |
| Adaptive discharge control | DISC pin automatically disables internal discharge path when load current exceeds 330 mA - prevents unnecessary power loss during active delivery. |
| Thermal-aware operation | Internal die OTP (135°C) and external NTC monitoring with 90 ms debounce - ensures safe operation under sustained 45 W load. |
Applications
| Wall Charger for Laptop Battery | Automotive DC-DC Car Charger |
|---|---|
Use Scenario: Compact 45 W USB-C wall adapter delivering PPS-enabled fast charging to ultrabooks and tablets. IC Role / Device Role / Timing Role: Primary PD source controller managing VBUS ramp-up, CC negotiation, CV/CC regulation, and fault recovery. Use Value: Enables 20 V @ 2.25 A (45 W) PPS profile with ±5% voltage accuracy and <2 s fault recovery - meeting USB-IF certification requirements. | Use Scenario: In-vehicle USB-C charger converting 12 V/24 V battery to regulated 5–20 V output for mobile devices. IC Role / Device Role / Timing Role: Adaptive source controller interfacing with buck-boost IC (e.g., NCV81599) via CATH/COMP and IS+/IS− feedback loops. Use Value: Supports wide input (12–24 V), automotive temp range (−40°C to +85°C), and robust ESD/OTP - enabling drop-in replacement in OEM infotainment systems. |
| AC-DC Adapter for Tablet PC | Multi-Port USB-C PD Hub |
Use Scenario: Single-port 45 W offline AC-DC adapter with opto-coupled feedback for isolated secondary-side control. IC Role / Device Role / Timing Role: Controls opto-coupler cathode (CATH) to regulate primary-side PWM controller (e.g., NCP1345) based on VFB/IFB signals. Use Value: Eliminates need for secondary-side LDO and discrete op-amps - reduces component count by ≥4 and improves transient response. | Use Scenario: Dual-port USB-C hub with independent PD negotiation per port using parallel FUSB3307 instances. IC Role / Device Role / Timing Role: Independent source controller per port handling CC1/CC2 detection, BMC communication, and gate-driven load switching. Use Value: Enables concurrent 45 W + 45 W delivery with isolated fault domains - preventing single-point failure across ports. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB PD source controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4272-AEC1 | Integrated 60 V/5 A synchronous buck controller with embedded PD 3.0 PHY; no external opto-coupler needed but lacks NTC interface. | Targeted for automotive-grade DC-DC designs only; not suitable for AC-DC secondary-side control. | Select when integrating power stage and PD controller into single IC; avoid if opto-coupler isolation or NTC monitoring is required. |
| FUSB302BMPX | USB PD 2.0 source-only transceiver (no CV/CC regulation, no gate driver, no PPS); requires external MCU and power stage control. | Used in simpler 5–18 W chargers where full PD 3.0 PPS and autonomous regulation are unnecessary. | Select for cost-sensitive, non-PPS applications with existing MCU infrastructure; avoid for 45 W autonomous designs. |
Compared with MPQ4272-AEC1 and FUSB302BMPX, FUSB3307D45A0AFMNWTWG uniquely combines full PD 3.0 hardware stack, PPS-capable CV/CC regulation, N-channel gate driver, and NTC thermal sensing - making it optimal for standalone 45 W AC-DC and automotive DC-DC source designs requiring no external processor.
Availability
FUSB3307D45A0AFMNWTWG is available at Aetrix Electronics and suitable for wall chargers for laptop batteries, automotive DC-DC car chargers, and AC-DC adapters for tablet PCs requiring stable component supply, full USB PD 3.0 compliance, and QFNW package thermal performance.
Supply support for FUSB3307D45A0AFMNWTWG 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
onsemi is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
FUSB3307D45A0AFMNWTWG belongs to onsemi's USB Power Delivery controller product line, designed specifically for autonomous, MCU-free USB-C source implementations in compact, high-efficiency AC-DC and DC-DC power adapters.
FAQ
What is the maximum output power supported by FUSB3307D45A0AFMNWTWG?
FUSB3307D45A0AFMNWTWG is rated for 45 W operation, corresponding to its D45A0AF designation in the ordering matrix. It supports up to 21 V × 5 A (105 W theoretical), but the device variant FUSB3307D45A0AFMNWTWG is configured and characterized for 45 W continuous delivery under −40°C to +85°C ambient conditions with appropriate thermal design.
Does FUSB3307D45A0AFMNWTWG require an external microcontroller to implement USB PD 3.0?
No, FUSB3307D45A0AFMNWTWG does not require an external microcontroller. It integrates a complete hardware-based USB PD 3.0 Device Policy Manager (DPM), Policy Engine, Protocol Stack, and BMC PHY - enabling fully autonomous PD negotiation, CV/CC regulation, and fault handling without firmware or host intervention.
What package type and thermal performance does FUSB3307D45A0AFMNWTWG use?
FUSB3307D45A0AFMNWTWG uses a 20-pin QFNW package (4×4 mm body, 0.5 mm pitch, exposed thermal pad), case 484AT. Its thermal resistance is RJA = 36.1°C/W, enabling reliable 45 W operation at +85°C ambient with standard JEDEC 2S2P board layout and no thermal vias.
How does FUSB3307D45A0AFMNWTWG handle VBUS discharge during disconnect events?
FUSB3307D45A0AFMNWTWG uses its open-drain DISC pin to actively discharge VBUS through an external 39 Ω resistor. It sinks up to 250 mA during discharge, with timing dependent on VBUS step size and final voltage (e.g., tDISC3 = 56 ms for >0.5 V step above 13 V). Internal discharge is disabled if load current exceeds 330 mA.
Can FUSB3307D45A0AFMNWTWG be used in automotive applications?
Yes, FUSB3307D45A0AFMNWTWG is qualified for −40°C to +85°C operation and features automotive-grade protections including VCONN OCP (50 mA), CC1/CC2 OVP (6 V), and dual OTP (internal 135°C + external NTC). It is deployed in automotive DC-DC car chargers per Figure 6 of the datasheet.
FUSB3307D45A0AFMNWTWG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- 20-VFQFN Exposed Pad
- Programmable:
- Not Verified
- Protocol:
- USB
- Function:
- Adapter
- Interface:
- USB
- Standards:
- USB 3.0
- Voltage - Supply:
- 4.75V ~ 5.5V
- Current - Supply:
- 10mA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Supplier Device Package:
- 20-QFN (4x4)
- Grade:
- -
- Qualification:
- -
FUSB3307D45A0AFMNWTWG FAQ
1.How can I place an order for FUSB3307D45A0AFMNWTWG through Aetrix?
Please submit a Request for Quotation (RFQ) for FUSB3307D45A0AFMNWTWG 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 FUSB3307D45A0AFMNWTWG reliable?
The price and inventory of FUSB3307D45A0AFMNWTWG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FUSB3307D45A0AFMNWTWG is usually 5 days.
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Once your FUSB3307D45A0AFMNWTWG 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 FUSB3307D45A0AFMNWTWG?
For technical support, including FUSB3307D45A0AFMNWTWG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FUSB3307D45A0AFMNWTWG requirements.
6.How does Aetrix verify that FUSB3307D45A0AFMNWTWG is sourced from the original manufacturer or authorized distributors?
All FUSB3307D45A0AFMNWTWG 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 FUSB3307D45A0AFMNWTWG meets industry standards.
7.What is the process for return or replacement of FUSB3307D45A0AFMNWTWG?
All FUSB3307D45A0AFMNWTWG units undergo pre-shipment inspection (PSI). If there is an issue with FUSB3307D45A0AFMNWTWG, 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 FUSB3307D45A0AFMNWTWG part is unused and in its original packaging.
Return procedure for FUSB3307D45A0AFMNWTWG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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