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onsemi NCV6356CMTWTXG
- Part No.:
- NCV6356CMTWTXG
- Manufacturer:
- onsemi
- Package:
- 14-WFDFN Exposed Pad
- Datasheet:
-
NCV6356CMTWTXG.pdf
- Description:
- IC REG BUCK PROG 5A 14WDFNW
- Quantity:
- Payment:
- Shipping:
Inventory:2,299
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Product details
Overview
NCV6356CMTWTXG from onsemi is an AEC-Q100 qualified synchronous Adaptive On-time (AOT) buck converter for automotive post-regulation, delivering up to 5.0 A at programmable output voltages from 0.6 V to 1.4 V, operating across 2.5–5.5 V input, with I²C interface and integrated thermal protection - used in ADAS vision systems and instrument clusters.
For engineers reviewing the NCV6356CMTWTXG datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, validated pin functions, confirmed automotive-grade specifications, and real-world substitution guidance for power management design-in.
Technical Context
The NCV6356CMTWTXG implements voltage-mode AOT control with automatic PFM/PPWM mode transitions to optimize efficiency across load range. It integrates high-side (38 mΩ typical) and low-side (29 mΩ typical) MOSFETs, eliminating external rectifiers and enabling CCM/DCM operation without external compensation.
Its dual-register I²C architecture supports dynamic voltage scaling (DVS) with programmable ramp rates, hardware-enforced thermal shutdown at 150 °C (30 °C hysteresis), and configurable peak current limiting via IPEAK[1..0] bits - all within a 3.0 × 4.0 mm DFN-14 package rated for −40 °C to +125 °C junction temperature.
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 external LDO pre-regulation. |
| Output Current Capability | 5.0 A at TA = 85 °C - sustained delivery for high-performance processor cores in automotive infotainment. |
| Output Voltage Range | 0.6 V to 1.4 V in 6.25 mV steps - precise core voltage tuning for Snap Dragon SoCs and ADAS processors. |
| Switching Frequency | 2.16–2.64 MHz (typ. 2.4 MHz) - enables use of compact 330 nH inductors and thin-profile ceramic capacitors. |
| Quiescent Current | 60 µA in PFM mode - extends battery runtime during vehicle sleep modes without compromising wake-up responsiveness. |
| I²C Interface Speed | Up to 3.4 MHz - supports fast DVS updates and register access synchronized with processor DVFS events. |
| Thermal Protection | 150 °C shutdown with 30 °C hysteresis - prevents irreversible silicon damage under sustained overload or poor PCB thermal design. |
Pinout & Package
NCV6356CMTWTXG is housed in a 3.0 × 4.0 mm, 0.5 mm pitch, 14-pin DFN package (Case 511CM) with exposed thermal pad for enhanced heat dissipation in automotive under-hood environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SCL | I²C Clock Input | Configurable clock line with internal pull-down; enables register read/write and DVS command timing. |
| 2 VOUT | Feedback Input | Direct connection to output capacitor positive terminal - critical for stable regulation and ±1.5% DC accuracy. |
| 3 INTB | Open-Drain Interrupt Output | Signals thermal warning, short-circuit fault, or power-good status; requires external pull-up for logic-level compatibility. |
| 4 AVIN | Analog/Digital Supply | Primary bias rail for internal circuitry; must be decoupled with ≥4.7 µF ceramic capacitor near pin. |
| 5–7 SW | Switch Node Outputs | Three paralleled pins drive external inductor; low-inductance routing essential to minimize switching losses and EMI. |
| 8–9 PVIN | Power Input | High-current input tied to AVIN; requires ≥10 µF local ceramic decoupling and heavy copper traces. |
| 10–11 PGND | Power Ground | High-switching-current return path; must connect to dedicated local ground plane, isolated from AGND except at single point. |
| 12 SDA | I²C Data I/O | Bidirectional data line with internal pull-down; supports multi-master arbitration and DVS register updates. |
| 13 VSEL | Voltage/Mode Select Input | Hardware-selectable configuration between two I²C-programmed output voltages or operating modes - zero-latency switching. |
| 14 EN | Enable Control Input | Active-high enable with internal pull-down; initiates power-up sequence and controls sleep/off mode entry. |
| 15 AGND | Analog Ground | Reference for feedback, reference, and analog blocks; connects to system ground but separated from PGND until star-point tie. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive On-Time (AOT) Control | Enables pseudo-fixed 2.4 MHz switching across input/output variations - eliminates loop compensation components and improves transient response. |
| Dynamic Voltage Scaling (DVS) | Smooth, software- or hardware-triggered output voltage transitions with programmable dV/dt - meets processor DVFS timing requirements without brownouts. |
| Integrated Thermal Management | Three-tier monitoring (pre-warning at 105 °C, warning at 135 °C, shutdown at 150 °C) with interrupt signaling - enables proactive thermal mitigation in sealed ECUs. |
| Active Output Discharge | On-chip discharge path (enabled by default) ensures rapid VOUT collapse during disable - prevents back-powering of downstream logic and meets ASIL-B functional safety expectations. |
| Configurable Peak Current Limit | Four selectable IPEAK thresholds (5.2–6.8 A) via I²C - allows optimization of inductor selection and short-circuit robustness per application load profile. |
Applications
| ADAS Vision System Power | Automotive Instrument Cluster |
|---|---|
Use Scenario: Powers image signal processor (ISP) and CMOS image sensor in forward-facing camera modules requiring tight voltage tolerance and fast load transients. IC Role / Device Role / Timing Role: Primary POL regulator delivering 1.15 V @ 4.5 A with <±20 mV transient deviation during 1.5 A load steps. Use Value: AOT control and 2.4 MHz switching ensure minimal output ripple and rapid recovery - preserving image integrity during scene changes. |
Use Scenario: Supplies microcontroller, display driver, and CAN transceiver in digital instrument clusters with mixed 1.2 V/3.3 V/5 V rail requirements. IC Role / Device Role / Timing Role: Secondary buck stage converting 5 V bus to 1.2 V core supply, coordinated via I²C with cluster MCU for power-state synchronization. Use Value: I²C-configurable DVS and hardware VSEL allow seamless voltage scaling during display brightness or animation mode changes. |
| Infotainment Application Processor | Radar Signal Processing Unit |
Use Scenario: Regulates core voltage for Snapdragon-based head unit SoCs with dynamic performance states (LPM/HPM). IC Role / Device Role / Timing Role: High-efficiency POL converter supporting 0.6–1.4 V output range in 6.25 mV steps, controlled via I²C during DVFS transitions. Use Value: PFM/PPWM auto-transition maintains >90% efficiency from 1 mA to 5 A - extending runtime in always-on audio/video playback. |
Use Scenario: Supplies 1.0 V rail to high-speed ADCs and DSPs in 77 GHz radar modules where EMI and thermal density are critical. IC Role / Device Role / Timing Role: Compact 3.0 × 4.0 mm DFN regulator with 330 nH inductor footprint - minimizes board area in space-constrained radar front-end PCBs. Use Value: 60 µA quiescent current and thermal pre-warning interrupt enable low-power radar wake-on-radar functionality compliant with ISO 16750-4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4420AGL-AEC1-Z | 4.5 A max output, fixed 2.2 MHz frequency, no I²C interface - uses resistor-based VOUT setting and external compensation. | Lacks DVS and register-based configuration; suitable only for static-voltage applications like memory rails. | Select when I²C control and dynamic voltage scaling are unnecessary and BOM cost reduction is prioritized over flexibility. |
| TPS6286418ARQYR | 6 A capability, 1.8–5.5 V input, I²C-compatible but non-AEC-Q100; supports PMBus commands and telemetry reporting. | Designed for industrial/commercial use; lacks automotive qualification and thermal warning interrupts required for ASIL-B systems. | Choose only for non-automotive designs needing higher current or telemetry - not acceptable for production automotive ECUs. |
Compared with MPQ4420AGL-AEC1-Z and TPS6286418ARQYR, the NCV6356CMTWTXG uniquely combines AEC-Q100 qualification, hardware-accelerated VSEL switching, three-tier thermal interrupts, and 60 µA PFM quiescent current - making it the only option qualified for safety-critical ADAS domain controllers requiring both functional safety and dynamic power management.
Availability
NCV6356CMTWTXG is available at Aetrix Electronics and suitable for automotive ADAS, instrument cluster, and infotainment applications requiring stable component supply, long-term lifecycle support, and PPAP-compliant traceability.
Supply support for NCV6356CMTWTXG 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, with leadership in automotive, industrial, cloud, and IoT markets - delivering silicon solutions meeting stringent reliability and safety standards.
The NCV6356CMTWTXG belongs to onsemi's automotive-grade DC-DC converter product line, designed specifically for post-regulation power delivery in ASIL-B compliant electronic control units including camera modules, radar sensors, and digital cockpits.
FAQ
What is the maximum output current rating for NCV6356CMTWTXG at 105 °C ambient?
The NCV6356CMTWTXG delivers up to 3.0 A continuous output current at TA = 105 °C with proper PCB thermal design (RJA = 30 °C/W). This derating reflects junction temperature limits and ensures reliable operation in under-dash automotive environments where airflow is restricted and ambient temperatures exceed 85 °C.
Does NCV6356CMTWTXG support dynamic voltage scaling (DVS) and how is it implemented?
Yes, NCV6356CMTWTXG supports hardware- and I²C-triggered DVS. Voltage transitions are executed by writing new VOUT values to PROGVSEL0/PROGVSEL1 registers or toggling the VSEL pin - enabling sub-100 µs latency. Ramp rate is programmable via DVS[1..0] bits, and operation is supported in both forced PPWM and auto PFM/PPWM modes.
What package type and thermal characteristics does NCV6356CMTWTXG use?
NCV6356CMTWTXG uses a 3.0 × 4.0 mm, 0.5 mm pitch DFN-14 package (Case 511CM) with exposed thermal pad. Its RJA is 30 °C/W on a multilayer demo board, supporting 1333 mW power dissipation at TA = 85 °C - enabling compact, convection-cooled layouts in space-constrained automotive modules.
How does the thermal protection system work in NCV6356CMTWTXG?
The NCV6356CMTWTXG implements three thermal thresholds: pre-warning at 105 °C, warning at 135 °C, and shutdown at 150 °C (all typical), each with dedicated interrupt flags (INTB). Hysteresis is 6 °C, 15 °C, and 30 °C respectively. After shutdown, restart requires either EN pin toggle or automatic rearm if REARM bit is set - preventing thermal runaway.
Is NCV6356CMTWTXG qualified for automotive applications and what standards does it meet?
Yes, NCV6356CMTWTXG is AEC-Q100 Grade 1 qualified (−40 °C to +125 °C junction), PPAP-capable, and designed for automotive power systems. It meets JEDEC JESD22-A114 (2.5 kV HBM) and JESD22-C101 (1 kV CDM) ESD standards, and supports functional safety requirements through thermal interrupts, power-good signaling, and active output discharge.
NCV6356CMTWTXG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 14-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 1.4V
- Current - Output:
- 5A
- 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)
NCV6356CMTWTXG FAQ
1.How can I place an order for NCV6356CMTWTXG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV6356CMTWTXG 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 NCV6356CMTWTXG reliable?
The price and inventory of NCV6356CMTWTXG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV6356CMTWTXG is usually 5 days.
3.What payment methods are accepted for NCV6356CMTWTXG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV6356CMTWTXG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV6356CMTWTXG?
NCV6356CMTWTXG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV6356CMTWTXG 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 NCV6356CMTWTXG?
For technical support, including NCV6356CMTWTXG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV6356CMTWTXG requirements.
6.How does Aetrix verify that NCV6356CMTWTXG is sourced from the original manufacturer or authorized distributors?
All NCV6356CMTWTXG 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 NCV6356CMTWTXG meets industry standards.
7.What is the process for return or replacement of NCV6356CMTWTXG?
All NCV6356CMTWTXG units undergo pre-shipment inspection (PSI). If there is an issue with NCV6356CMTWTXG, 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 NCV6356CMTWTXG part is unused and in its original packaging.
Return procedure for NCV6356CMTWTXG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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