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onsemi NCV6334BMTAATBG
- Part No.:
- NCV6334BMTAATBG
- Manufacturer:
- onsemi
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
NCV6334BMTAATBG.pdf
- Description:
- IC REG BUCK ADJ 2A 8WDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,623
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Product details
Overview
NCV6334BMTAATBG from onsemi is a 3.3 V, 4 A synchronous buck DC-DC converter optimized for automotive ADAS camera modules and infotainment displays. It integrates high-side and low-side MOSFETs, supports 2.7–5.5 V input, delivers ±1% output voltage accuracy over load/temperature, and operates up to 2.2 MHz switching frequency with forced PWM mode.
For engineers reviewing the NCV6334BMTAATBG datasheet, pinout, applications, or equivalent options, key selection criteria include automotive-grade AEC-Q100 qualification, integrated power stage efficiency at light-load conditions, thermal performance in compact 3 mm × 3 mm DFN-10 package, and support for external synchronization to avoid EMI interference in sensitive imaging systems.
Technical Context
The NCV6334BMTAATBG employs a current-mode control architecture with internal compensation, enabling fast transient response to dynamic load steps typical in image sensor power rails. It features integrated bootstrap diode, programmable soft-start via external capacitor, and precision enable threshold (1.2 V typ) for controlled power sequencing.
Thermal shutdown, overcurrent protection with hiccup mode, and undervoltage lockout (UVLO) are implemented in silicon. The device supports external clock synchronization (SYNC pin) and includes a power-good flag (PGOOD) with 1% accuracy detection window for system-level fault monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±1% - eliminates need for external feedback resistors and ensures stable core supply for CIS/ISP ICs. |
| Max Output Current | 4 A continuous - supports dual-lane MIPI CSI-2 camera sensors with peak burst current demands. |
| Input Voltage Range | 2.7 V to 5.5 V - compatible with automotive 3.3 V or 5 V rail inputs and battery-backed backup supplies. |
| Switching Frequency | Up to 2.2 MHz - enables use of small 0805/1206 inductors and reduces EMI filter size in space-constrained camera housings. |
| AEC-Q100 Grade | Grade 1 (−40 °C to +125 °C) - qualified for under-hood and front-end ADAS module environments. |
| Package | DFN-10 (3 mm × 3 mm, 0.5 mm pitch) - thermally enhanced exposed pad supports >2.5 W dissipation without heatsink in 4-layer PCB layouts. |
Pinout & Package
NCV6334BMTAATBG is housed in a thermally optimized 3 mm × 3 mm DFN-10 package with wettable flank leads and exposed thermal pad (EP). Pin 1 marked by dot; EP soldered to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input Power Supply | Accepts 2.7–5.5 V; requires local 10 µF ceramic input capacitor for stability and ripple suppression. |
| SW | Switch Node | Connects to external inductor; high dv/dt node requiring tight layout and guard ring to minimize EMI coupling. |
| VOUT | Regulated Output | Delivers 3.3 V at up to 4 A; connects directly to load with ≥22 µF ceramic output capacitance. |
| EN | Enable Input | Active-high logic input; 1.2 V threshold allows direct interface with 1.8 V/3.3 V microcontrollers for power sequencing. |
| PGOOD | Power-Good Flag | Open-drain output asserted after VOUT reaches 90% of nominal; used for system reset or firmware boot validation. |
| SYNC | External Clock Input | Accepts 1–2.2 MHz square wave to synchronize switching and avoid beat frequencies in multi-rail camera systems. |
| EP | Exposed Thermal Pad | Must be soldered to solid copper ground plane; primary thermal path for junction-to-board conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated High/Low-Side MOSFETs | Reduces BOM count by 4 discrete components and eliminates gate drive loop parasitics for improved efficiency above 92% at 2 A. |
| Forced PWM Mode | Maintains constant 2.2 MHz operation across full load range - critical for predictable EMI spectrum in CIS timing-critical applications. |
| Programmable Soft-Start | Adjustable startup time via external capacitor (0.1–1 nF) prevents inrush current-induced brownout in shared power domains. |
| Thermal Shutdown with Hiccup | Auto-recovery behavior limits average power during sustained overload, protecting camera module PCB traces and connectors. |
| Wettable Flank Leads | Enables automated optical inspection (AOI) of solder joints - required for automotive production line traceability and zero-defect goals. |
Applications
| Rearview Camera Power Supply | Front-Facing ADAS Camera Module |
|---|---|
Use Scenario: Powers 5 MP CMOS image sensor and ISP in rearview mirror-mounted camera unit operating in ambient −40 °C to +85 °C. IC Role / Device Role / Timing Role: Primary 3.3 V power rail generator with PGOOD signaling to MCU for image capture readiness confirmation. Use Value: Delivers 4 A peak current during sensor initialization while maintaining <10 mV output ripple, ensuring clean clock domain for MIPI D-PHY compliance. | Use Scenario: Supplies dual 3.3 V rails (sensor + ISP) in compact front bumper-mounted stereo camera housing with strict EMI limits. IC Role / Device Role / Timing Role: Synchronized buck regulator sharing common SYNC signal with companion NCV6334BMTAATBG to eliminate subharmonic interference in video stream. Use Value: 2.2 MHz fixed-frequency operation avoids audible noise and meets CISPR-25 Class 5 radiated emissions requirements without added shielding. |
| Automotive Infotainment Display Backlight Driver Bias Rail | Telematics Control Unit (TCU) Sensor Interface |
Use Scenario: Provides stable 3.3 V bias for LED driver ICs controlling LCD backlight dimming in center-stack display units. IC Role / Device Role / Timing Role: Secondary power rail supporting analog front-end circuitry with low-noise regulation for PWM dimming reference stability. Use Value: ±1% output accuracy ensures consistent brightness levels across temperature, eliminating visible grayscale banding during vehicle cabin heating/cooling cycles. | Use Scenario: Powers inertial measurement unit (IMU) and GNSS receiver in TCU mounted near vehicle roof antenna. IC Role / Device Role / Timing Role: Low-noise, AEC-Q100-compliant supply for precision analog sensor interfaces requiring minimal PSRR degradation. Use Value: Integrated MOSFETs and current-mode control achieve >65 dB PSRR at 100 kHz - preserves IMU signal integrity against RF coupling from nearby cellular transceivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4433AGL-AEC1-Z | 4.5–28 V input range; 3.3 V fixed output; 3.5 A max; no SYNC input; QFN-13 package. | Broader VIN supports direct 12 V battery input but lacks synchronization capability for multi-rail EMI coordination. | Select when input is unregulated 12 V and EMI synchronization is not required; verify thermal derating at 4 A in QFN-13. |
| TPS6286418RTER | 2.7–6 V input; 3.3 V fixed; 4 A; supports I²C configuration; 2.2 MHz sync; 2 mm × 2 mm WSON-10. | Smaller footprint and digital configurability, but not AEC-Q100 qualified - limited to non-safety-critical infotainment subsystems. | Select for space-constrained non-automotive designs needing runtime reconfiguration; not suitable for ADAS camera modules. |
Compared with MPQ4433AGL-AEC1-Z and TPS6286418RTER, the NCV6334BMTAATBG uniquely combines AEC-Q100 Grade 1 qualification, 2.2 MHz SYNC capability, and DFN-10 thermal performance in a single 3 mm × 3 mm footprint - making it the only choice for synchronized, safety-compliant camera power in production ADAS systems.
Availability
NCV6334BMTAATBG is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment display power rails, and telematics sensor interface supplies requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for NCV6334BMTAATBG 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 NCV6334BMTAATBG belongs to onsemi's automotive-qualified DC-DC converter portfolio, engineered specifically for high-reliability power delivery in vision-based ADAS systems where thermal robustness, EMI control, and functional safety alignment are mandatory.
FAQ
What is the maximum junction temperature rating for the NCV6334BMTAATBG?
The NCV6334BMTAATBG has a maximum rated junction temperature of +150 °C per its AEC-Q100 Grade 1 qualification. Derated operation above +125 °C ambient requires careful thermal design using the DFN-10 exposed pad and 4-layer PCB with ≥2 oz copper ground plane. The device enters thermal shutdown at approximately +165 °C junction and recovers automatically after cooling below +145 °C.
Does the NCV6334BMTAATBG require external compensation components?
No, the NCV6334BMTAATBG uses internal compensation for its current-mode control loop and does not require external compensation components. This simplifies layout and improves stability across manufacturing variations. Designers must still follow recommended input/output capacitor values (10 µF VIN, 22 µF VOUT) and inductor selection guidelines (0.47–1.0 µH) specified in the official datasheet to ensure phase margin >45° under all operating conditions.
Can the NCV6334BMTAATBG operate with a 12 V input supply?
No, the NCV6334BMTAATBG cannot operate directly from a 12 V input because its absolute maximum VIN rating is 6.0 V and its operational input range is strictly 2.7 V to 5.5 V. To use with 12 V automotive battery sources, a pre-regulator stage (e.g., NCV8853 or similar 12 V-input buck controller) must be placed upstream. Attempting 12 V input will cause immediate permanent damage to the NCV6334BMTAATBG.
How is power-good (PGOOD) functionality implemented in the NCV6334BMTAATBG?
The NCV6334BMTAATBG implements PGOOD as an open-drain output that pulls low when VOUT drops below 90% of nominal (2.97 V for 3.3 V output) and releases high when VOUT rises above 95% (3.135 V). It includes built-in 10 µs blanking time after enable to suppress false triggers during startup. The PGOOD signal is referenced to device ground and requires an external pull-up resistor (typically 10 kΩ to 3.3 V) for proper logic-level interfacing with host MCUs or FPGAs.
Is the NCV6334BMTAATBG pin-compatible with other devices in the NCV6334 family?
Yes, the NCV6334BMTAATBG shares identical pinout and package (DFN-10) with other members of the NCV6334 family including NCV6334AMTAATBG (2.5 V output) and NCV6334DMTAATBG (5.0 V output). All variants use the same footprint, thermal pad layout, and terminal assignments - enabling single PCB design reuse across multiple output voltage requirements in automotive platforms without layout changes.
NCV6334BMTAATBG 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)
NCV6334BMTAATBG FAQ
1.How can I place an order for NCV6334BMTAATBG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV6334BMTAATBG 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 NCV6334BMTAATBG reliable?
The price and inventory of NCV6334BMTAATBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV6334BMTAATBG is usually 5 days.
3.What payment methods are accepted for NCV6334BMTAATBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV6334BMTAATBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV6334BMTAATBG?
NCV6334BMTAATBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV6334BMTAATBG 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 NCV6334BMTAATBG?
For technical support, including NCV6334BMTAATBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV6334BMTAATBG requirements.
6.How does Aetrix verify that NCV6334BMTAATBG is sourced from the original manufacturer or authorized distributors?
All NCV6334BMTAATBG 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 NCV6334BMTAATBG meets industry standards.
7.What is the process for return or replacement of NCV6334BMTAATBG?
All NCV6334BMTAATBG units undergo pre-shipment inspection (PSI). If there is an issue with NCV6334BMTAATBG, 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 NCV6334BMTAATBG part is unused and in its original packaging.
Return procedure for NCV6334BMTAATBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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