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onsemi NCV6356QMTWTXG
- Part No.:
- NCV6356QMTWTXG
- Manufacturer:
- onsemi
- Package:
- 14-WFDFN Exposed Pad
- Datasheet:
-
NCV6356QMTWTXG.pdf
- Description:
- IC REG BUCK 0.6V 6.8A 14WDFNW
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
NCV6356QMTWTXG from onsemi is an AEC-Q100 qualified synchronous buck converter for automotive post-regulation, delivering up to 6.8 A output current with I²C-programmable output voltage (0.6 V to 1.4 V in 6.25 mV steps), adaptive on-time control, and operation up to 2.4 MHz switching frequency. It integrates high-side and low-side MOSFETs, supports dynamic voltage scaling (DVS), and targets processor core rails in ADAS and infotainment systems.
For engineers reviewing the NCV6356QMTWTXG datasheet, pinout, applications, or equivalent options, key selection considerations include its dual-voltage configuration via VSEL pin, PFM/PPWM mode auto-transition, thermal warning/interrupt signaling, active output discharge, and qualification for automotive temperature range (−40 °C to +125 °C junction).
Technical Context
The NCV6356QMTWTXG implements Adaptive On-Time (AOT) voltage-mode control with fully integrated synchronous power stage (38 mΩ high-side, 29 mΩ low-side MOSFETs), enabling stable regulation across input voltages from 2.5 V to 5.5 V. Its dual operating modes-PFM for light-load efficiency and forced PPWM for transient response-are managed via I²C or hardware pins (EN, VSEL, INTB).
It features programmable thermal thresholds (pre-warning at 105 °C, warning at 135 °C, shutdown at 150 °C), configurable peak current limiting (IPEAK[1:0] selects 7.0–8.8 A), and DVS with controlled dV/dt using TIME register bits. The device uses internal feedback resistors and requires no external compensation network.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 5.5 V - supports direct battery, 3.3 V, and 5.0 V rail inputs without pre-regulation |
| Max Output Current | 6.8 A - confirmed for NCV6356Q variant at TA = 85 °C with proper PCB thermal design |
| Output Voltage Range | 0.6 V to 1.4 V in 6.25 mV steps - set via I²C registers PROGVSEL0/PROGVSEL1 or VSEL pin selection |
| Switching Frequency | 2.16–2.64 MHz - enables use of compact 330 nH inductors and low-profile ceramic capacitors |
| Quiescent Current | 60 µA in PFM mode - minimizes standby power loss in always-on automotive subsystems |
| Thermal Protection | 150 °C shutdown with 30 °C hysteresis - prevents irreversible damage during sustained overload |
| I²C Interface Speed | Up to 3.4 MHz - supports fast DVS updates and real-time configuration in high-speed processor domains |
Pinout & Package
NCV6356QMTWTXG is housed in a thermally enhanced 3.0 mm × 4.0 mm, 0.5 mm pitch DFN-14 package (Case 511CM), with exposed thermal pad for PCB heat sinking. Pin assignments are validated per onsemi datasheet Figure 3 and Table 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AVIN | Analog Supply Input | Provides analog/digital core bias; must be tied to PVIN and decoupled with 4.7 µF ceramic capacitor |
| PVIN (Pins 8,9) | Power Input | High-current switch supply input; requires ≥10 µF local ceramic decoupling and short, heavy traces |
| SW (Pins 5,6,7) | Switch Node | Drives external 330 nH inductor; carries full switching current; must connect directly to inductor with minimal loop area |
| PGND (Pins 10,11) | Power Ground | High-current return path for switching node; requires dedicated local ground plane, separate from AGND |
| VOUT (Pin 2) | Feedback Input | Connects directly to output capacitor positive terminal (not plane) for accurate voltage sensing |
| EN (Pin 14) | Enable Control | Active-high enable with internal pull-down; initiates power-up sequence on rising edge |
| VSEL (Pin 13) | Voltage/Mode Select | Selects between two I²C-configurable output voltages and operating modes; internal pull-down |
| INTB (Pin 3) | Interrupt Output | Open-drain signal for thermal warning, short-circuit, or power-good events; requires external pull-up |
| SCL/SDA (Pins 1,12) | I²C Interface | Supports 3.4 MHz clock; enables DVS, register read/write, and real-time fault monitoring |
| AGND (Pin 15) | Analog Ground | Reference ground for analog circuits; must connect to system ground at single point near AVIN |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive On-Time (AOT) Control | Enables pseudo-fixed 2.4 MHz switching with ±10% accuracy across line/load/temperature, eliminating need for external compensation |
| Dynamic Voltage Scaling (DVS) | Smooth, software-controlled output voltage transitions (e.g., 0.875 V ↔ 0.906 V) with programmable dV/dt for processor core power management |
| Thermal Intelligence | Three-tier thermal monitoring (pre-warning at 105 °C, warning at 135 °C, shutdown at 150 °C) with interrupt signaling for proactive system response |
| Configurable Peak Current Limit | IPEAK[1:0] bits select four current thresholds (7.0/7.7/8.2/8.8 A) to match inductor saturation and PCB thermal capability |
| Active Output Discharge | Integrated discharge FET clears residual VOUT within 100 µs after disable, ensuring safe sequencing in multi-rail systems |
Applications
| ADAS Vision Processing Unit | Automotive Infotainment SoC Core Rail |
|---|---|
Use Scenario: Powers image signal processor (ISP) and neural network accelerator cores in camera ECU under varying computational load. IC Role / Device Role / Timing Role: Primary core voltage regulator with DVS support for dynamic performance scaling and thermal-aware throttling. Use Value: Delivers 6.8 A peak current at 0.875 V/0.906 V with <±20 mV transient deviation during 0.4–6.6 A load steps, maintaining vision pipeline stability. |
Use Scenario: Supplies application processor core in head-unit running Android Automotive OS with burst-intensive UI rendering. IC Role / Device Role / Timing Role: High-efficiency post-regulator converting 5 V domain to dynamically scaled core voltage (1.15 V → 1.394 V). Use Value: Achieves >90% efficiency at 3 A load and 3.3 V input, reducing thermal load in confined dashboard enclosure while supporting I²C-based runtime voltage updates. |
| Digital Instrument Cluster MCU | Radar Signal Processor Power Rail |
Use Scenario: Regulates 1.15 V core supply for real-time safety-critical MCU managing gauge rendering and CAN gateway functions. IC Role / Device Role / Timing Role: AEC-Q100 Grade 1-compliant buck converter with power-good signaling and thermal warning for functional safety monitoring. Use Value: Provides guaranteed startup within 150 µs and maintains <±1.5% DC accuracy over −40 °C to +125 °C junction, meeting ASIL-B timing constraints. |
Use Scenario: Powers 77 GHz radar MMIC controller requiring ultra-low noise and fast transient response during chirp bursts. IC Role / Device Role / Timing Role: Low-noise synchronous buck with 2.4 MHz switching to minimize beat frequencies with RF front-end clocks. Use Value: Limits output ripple to <15 mVpp and achieves <100 ns load-step recovery, preventing false detection in high-sensitivity radar baseband processing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4436-AEC1 | 4.5 A max output, fixed 500 kHz–3 MHz frequency, no I²C interface, only resistor-programmed VOUT | Lacks DVS, thermal interrupts, and dual-voltage configuration; suitable for static-rail designs | Choose when I²C control and dynamic scaling are unnecessary and cost sensitivity outweighs feature depth |
| TPS62864-Q1 | 6 A max output, 1.8–6.0 V input, I²C interface, but only 1.8–3.3 V VOUT range and no VSEL pin | Cannot support sub-1.0 V core rails required by latest automotive processors; lacks thermal pre-warning | Prefer only if target VOUT ≥ 1.8 V and thermal management is handled externally |
Compared with MPQ4436-AEC1 and TPS62864-Q1, the NCV6356QMTWTXG uniquely combines 6.8 A capability, 0.6–1.4 V programmability, VSEL-pin latency-free mode switching, and three-level thermal intelligence - making it the only option qualified for next-generation ADAS SoC core rails demanding both precision and responsiveness.
Availability
NCV6356QMTWTXG is available at Aetrix Electronics and suitable for automotive ADAS vision systems, digital instrument clusters, infotainment head-units, and radar signal processors requiring stable component supply across extended temperature and long product lifecycles.
Supply support for NCV6356QMTWTXG 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 focused on energy-efficient innovation for automotive, industrial, cloud, and IoT applications, with leadership in power management, imaging, and intelligent sensing.
The NCV6356QMTWTXG belongs to onsemi's automotive-grade power management IC portfolio, designed specifically for high-reliability post-regulation in safety-critical vehicle subsystems including ADAS, body electronics, and cockpit computing.
FAQ
What is the maximum output current capability of the NCV6356QMTWTXG?
The NCV6356QMTWTXG delivers up to 6.8 A continuous output current at TA = 85 °C with appropriate PCB thermal design, as confirmed in Table 4 of the datasheet for the NCV6356Q variant. This rating assumes use of the recommended 330 nH inductor and adequate copper pour on the DFN-14 thermal pad. At TA = 105 °C, output current derates to 5.3 A.
Does the NCV6356QMTWTXG support dynamic voltage scaling (DVS)?
Yes, the NCV6356QMTWTXG supports hardware- and software-initiated DVS. Voltage transitions (e.g., between 0.875 V and 0.906 V) are executed smoothly via I²C register writes to PROGVSEL0/PROGVSEL1 or by toggling the VSEL pin. The dV/dt is programmable using DVS[1:0] bits in the TIME register, ensuring glitch-free operation during processor frequency scaling.
How does thermal protection work on the NCV6356QMTWTXG?
The NCV6356QMTWTXG implements three-tier thermal monitoring: pre-warning at 105 °C, warning at 135 °C, and shutdown at 150 °C (typical), each with dedicated interrupt signaling via INTB. Thermal hysteresis is 6 °C (pre-warning), 15 °C (warning), and 30 °C (shutdown). Recovery occurs automatically after cooling below respective hysteresis thresholds, provided REARM = 1 in LIMCONF register.
What package type and footprint does the NCV6356QMTWTXG use?
The NCV6356QMTWTXG uses a 3.0 mm × 4.0 mm, 0.5 mm pitch DFN-14 package (Case 511CM) with exposed thermal pad. It is compatible with standard reflow profiles and requires solder paste stencil design per IPC-7351B for optimal thermal and mechanical reliability. The pinout matches onsemi's recommended layout in Figure 1 of the datasheet.
Is the NCV6356QMTWTXG AEC-Q100 qualified?
Yes, the NCV6356QMTWTXG is AEC-Q100 qualified (Grade 1: −40 °C to +125 °C ambient) and PPAP capable. It meets stress test requirements for automotive environments including HTOL, TC, UHAST, and ESD (HBM ±2.5 kV, CDM ±1.0 kV), as documented in the datasheet's ordering information and qualification summary.
NCV6356QMTWTXG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 14-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- -
- Current - Output:
- 6.8A
- Frequency - Switching:
- Up to 2.4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 14-WDFNW (4x3)
NCV6356QMTWTXG FAQ
1.How can I place an order for NCV6356QMTWTXG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV6356QMTWTXG 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 NCV6356QMTWTXG reliable?
The price and inventory of NCV6356QMTWTXG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV6356QMTWTXG is usually 5 days.
3.What payment methods are accepted for NCV6356QMTWTXG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV6356QMTWTXG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV6356QMTWTXG?
NCV6356QMTWTXG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV6356QMTWTXG 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 NCV6356QMTWTXG?
For technical support, including NCV6356QMTWTXG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV6356QMTWTXG requirements.
6.How does Aetrix verify that NCV6356QMTWTXG is sourced from the original manufacturer or authorized distributors?
All NCV6356QMTWTXG 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 NCV6356QMTWTXG meets industry standards.
7.What is the process for return or replacement of NCV6356QMTWTXG?
All NCV6356QMTWTXG units undergo pre-shipment inspection (PSI). If there is an issue with NCV6356QMTWTXG, 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 NCV6356QMTWTXG part is unused and in its original packaging.
Return procedure for NCV6356QMTWTXG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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