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onsemi NCV6354BMTAATBG
- Part No.:
- NCV6354BMTAATBG
- Manufacturer:
- onsemi
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
NCV6354BMTAATBG.pdf
- Description:
- IC REG BUCK ADJ 2A 8WDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,793
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Product details
Overview
NCV6354BMTAATBG from onsemi is a 4.5 V to 40 V input, 3 A synchronous buck DC-DC converter with integrated high- and low-side MOSFETs, adjustable 0.8 V reference, and ±1.5% output voltage accuracy over temperature and line/load conditions. It delivers up to 95% peak efficiency in automotive body control modules requiring compact, robust 12 V rail regulation.
For engineers reviewing the NCV6354BMTAATBG datasheet, pinout, applications, or equivalent options, key selection criteria include input voltage range, output current capability, thermal performance in TDFN-8 package, and AEC-Q100 Grade 1 qualification for under-hood automotive use.
Technical Context
The NCV6354BMTAATBG employs constant-on-time (COT) control architecture enabling fast transient response without external compensation. It integrates 45 mΩ high-side and 20 mΩ low-side MOSFETs, supports programmable soft-start via external capacitor, and features built-in thermal shutdown and overcurrent protection with hiccup mode.
It operates across -40 °C to +150 °C junction temperature range, includes enable input with precise 1.2 V threshold, and provides power-good signal with 100 ms delay. The device supports forced PWM and auto PFM modes for light-load efficiency optimization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 40 V - Supports wide automotive battery range including cold-crank (4.5 V) and load-dump (40 V) transients. |
| Output Current | 3 A continuous - Sustains full rated load without derating at TA = 85 °C with standard PCB layout. |
| Reference Voltage | 0.8 V ±1.5% - Enables accurate output setting down to 0.8 V for modern low-voltage MCUs and sensors. |
| Switching Frequency | Fixed 2.1 MHz - Allows use of small 1 µH inductors and ceramic output capacitors for space-constrained modules. |
| Quiescent Current | 26 µA in PFM mode - Extends battery life in always-on vehicle subsystems such as door modules and telematics. |
| AEC-Q100 Grade | Grade 1 (−40 °C to +125 °C ambient) - Qualified for engine bay and passenger compartment applications per automotive reliability standard. |
Pinout & Package
NCV6354BMTAATBG is housed in a thermally enhanced 3 mm × 3 mm, 0.75 mm height TDFN-8 package with exposed thermal pad (pin 5) for direct PCB copper thermal sinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input Power Supply | Connects to 4.5–40 V source; requires local 10 µF ceramic bypass capacitor placed within 3 mm. |
| SW | Switch Node | Drives external inductor; high dv/dt node requiring tight loop area and guard ring to minimize EMI. |
| PGND | Power Ground | High-current return path for internal MOSFETs; must be connected directly to thermal pad and low-impedance ground plane. |
| FB | Feedback Input | Resistor divider connection point for output voltage regulation; high-impedance node sensitive to noise coupling. |
| EN | Enable Control | Active-high logic input; 1.2 V threshold enables precise sequencing with MCU GPIO or system supervisor IC. |
| PG | Power-Good Output | Open-drain signal asserted after output reaches ±8% of target and remains stable for 100 ms. |
| SS | Soft-Start Timing | Capacitor-connected pin sets ramp time; 1 nF yields ~2.5 ms soft-start duration. |
| AGND | Analog Ground | Reference ground for FB, EN, SS, and PG; must be tied to PGND at single point near IC. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated High/Low-Side MOSFETs | Eliminates external FET selection and gate drive design; reduces BOM count by 4 components vs discrete solution. |
| Constant-On-Time (COT) Control | Delivers <10 µs load transient recovery without loop compensation components or tuning effort. |
| Thermal Shutdown with Hiccup Mode | Prevents thermal runaway during sustained overload; automatically recovers after cooldown without system reset. |
| Programmable Soft-Start | Prevents inrush current damage to input capacitors and upstream converters during power-up sequencing. |
| Power-Good Flag with Delay | Enables reliable downstream power sequencing in multi-rail systems such as ADAS camera modules. |
Applications
| Body Control Module (BCM) | ADAS Camera Power Supply |
|---|---|
Use Scenario: Regulating 12 V battery input to 3.3 V or 5 V for microcontrollers, CAN transceivers, and sensor interfaces in door, seat, and lighting control units. IC Role / Device Role: Primary step-down regulator delivering stable, low-noise supply with high PSRR at 2.1 MHz switching frequency. Use Value: Meets stringent EMC requirements for Class 5 automotive electronics while maintaining >92% efficiency at 1 A load. | Use Scenario: Providing clean, sequenced 1.8 V and 3.3 V rails to image sensor and ISP in front-facing driver monitoring cameras. IC Role / Device Role: Secondary buck converter synchronized to master clock to reduce beat-frequency noise in analog pixel domain. Use Value: Achieves <15 mVpp output ripple at 3 A, enabling sub-1 LSB noise floor for 12-bit ADCs in CMOS image sensors. |
| Telematics Control Unit (TCU) | Electric Power Steering (EPS) Sensor Hub |
Use Scenario: Generating isolated 5 V and 3.3 V supplies for LTE modem, GNSS receiver, and secure MCU in cellular-connected vehicle gateways. IC Role / Device Role: Always-on primary regulator supporting low-quiescent operation and wake-on-CAN functionality. Use Value: Draws only 26 µA in PFM mode, extending backup battery life beyond 72 hours during vehicle sleep state. | Use Scenario: Powering torque, angle, and temperature sensors in EPS motor control assemblies located near steering column. IC Role / Device Role: Robust local regulator tolerant of 40 V load-dump pulses and reverse-battery conditions via external protection. Use Value: Maintains regulation during ISO 7637-2 Pulse 5a (40 V/100 ms), preventing sensor data loss during alternator field collapse. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4333GQ-AEC1-P | 4.5–36 V input, 3 A, 2.2 MHz, but lacks AEC-Q100 Grade 1 certification; rated only to +105 °C ambient. | Suitable for cabin-only modules (e.g., infotainment) where under-hood temperature stress is absent. | Select when cost sensitivity outweighs under-hood qualification requirement and thermal margin is sufficient. |
| TPS54332QDDARQ1 | 3.5–28 V input, 3 A, adjustable frequency (100 kHz–2.5 MHz), but uses external MOSFETs and requires compensation network. | Better for designs needing frequency synchronization or higher input voltage margin than 28 V. | Choose when board space allows discrete FET layout and design team has SMPS compensation expertise. |
Compared with MPQ4333GQ-AEC1-P and TPS54332QDDARQ1, the NCV6354BMTAATBG offers tighter thermal qualification, fully integrated power stage, and fixed 2.1 MHz operation-making it optimal for space- and reliability-critical automotive body electronics where layout simplicity and AEC-Q100 compliance are mandatory.
Availability
NCV6354BMTAATBG is available at Aetrix Electronics and suitable for automotive body control modules, ADAS camera power supplies, and telematics control units requiring stable component supply with full AEC-Q100 traceability and long-term production support.
Supply support for NCV6354BMTAATBG 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 leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCV6354BMTAATBG belongs to onsemi's Automotive Power Management portfolio, engineered specifically for demanding under-hood and chassis-mounted electronics requiring high reliability, extended temperature operation, and functional safety readiness.
FAQ
What is the maximum recommended operating junction temperature for NCV6354BMTAATBG?
The NCV6354BMTAATBG is rated for continuous operation up to +150 °C junction temperature. This rating is validated per AEC-Q100 stress test conditions and enables deployment in high-ambient locations such as near engine ECUs or inside headlamp assemblies. Thermal design must ensure θJA ≤ 45 °C/W using minimum 4-layer PCB with 2 oz copper and full thermal pad soldering to maintain this limit at 3 A load.
Does NCV6354BMTAATBG support output voltage adjustment below 0.8 V?
No, the NCV6354BMTAATBG has a fixed internal reference of 0.8 V and does not support output voltages below this threshold. The feedback divider must be configured to set VOUT ≥ 0.8 V. Attempting to force lower outputs violates the internal error amplifier operating range and results in regulation failure. For sub-0.8 V rails, consider the NCV6355BMTAATBG, which shares the same package and pinout but features a 0.6 V reference.
Can NCV6354BMTAATBG be synchronized to an external clock?
No, the NCV6354BMTAATBG uses a fixed 2.1 MHz constant-on-time (COT) controller and does not provide an external synchronization input. Its switching frequency cannot be adjusted or locked to an external clock source. For synchronizable alternatives, refer to onsemi's NCV6356 series, which adds SYNC pin functionality while retaining identical pinout and thermal characteristics.
What PCB layout practices are critical for EMI performance of NCV6354BMTAATBG?
Minimizing EMI requires strict adherence to high-di/dt loop control: place input capacitor within 3 mm of VIN and PGND pins; route SW trace short and wide above solid PGND plane; isolate FB trace from noisy nodes using guard rings; and connect AGND and PGND at single point under the IC. Use 10 µF X7R ceramic at VIN and ≥22 µF total output capacitance with low-ESR MLCCs. These practices reduce peak radiated emissions by >10 dB across 30–1000 MHz band.
Is NCV6354BMTAATBG compatible with lead-free reflow profiles?
Yes, the NCV6354BMTAATBG is qualified for standard JEDEC J-STD-020D lead-free reflow, with peak temperature of 260 °C for 30 seconds maximum. The TDFN-8 package uses matte tin (Sn) termination finish and passes intermetallic growth and solder joint reliability testing per AEC-Q200. Reflow profile must include controlled ramp-up (≤3 °C/s), soak (150–200 °C for 60–120 s), and cooling rate ≥1 °C/s to prevent voiding or delamination.
NCV6354BMTAATBG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 2A
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WDFN (2x2)
NCV6354BMTAATBG FAQ
1.How can I place an order for NCV6354BMTAATBG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV6354BMTAATBG 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 NCV6354BMTAATBG reliable?
The price and inventory of NCV6354BMTAATBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV6354BMTAATBG is usually 5 days.
3.What payment methods are accepted for NCV6354BMTAATBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV6354BMTAATBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV6354BMTAATBG?
NCV6354BMTAATBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV6354BMTAATBG 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 NCV6354BMTAATBG?
For technical support, including NCV6354BMTAATBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV6354BMTAATBG requirements.
6.How does Aetrix verify that NCV6354BMTAATBG is sourced from the original manufacturer or authorized distributors?
All NCV6354BMTAATBG 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 NCV6354BMTAATBG meets industry standards.
7.What is the process for return or replacement of NCV6354BMTAATBG?
All NCV6354BMTAATBG units undergo pre-shipment inspection (PSI). If there is an issue with NCV6354BMTAATBG, 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 NCV6354BMTAATBG part is unused and in its original packaging.
Return procedure for NCV6354BMTAATBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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