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onsemi NCV6324CMTAAWTBG
- Part No.:
- NCV6324CMTAAWTBG
- Manufacturer:
- onsemi
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
NCV6324CMTAAWTBG.pdf
- Description:
- IC REG BUCK ADJ 2A 8WDFNW
- Quantity:
- Payment:
- Shipping:
Inventory:2,495
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Product details
Overview
NCV6324CMTAAWTBG from onsemi is an automotive-grade synchronous buck converter optimized for portable and embedded subsystems powered by single-cell Li-ion or triple-cell alkaline/NiMH batteries. It delivers up to 2 A output current with externally adjustable voltage (0.6 V to VIN), operates at 3 MHz switching frequency, and features automatic PWM/PFM mode selection via the MODE pin. It is used in USB-powered devices and point-of-load regulation where compact size and high efficiency are critical.
For engineers reviewing the NCV6324CMTAAWTBG datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q100 qualification, WDFNW8 wettable flank package, 2.5–5.5 V input range, active output discharge, and thermal shutdown at 150°C - all essential for automotive infotainment and ADAS power rails.
Technical Context
The NCV6324CMTAAWTBG implements voltage-mode control with input feedforward compensation to maintain regulation across wide input voltage variations. Its internal P-MOSFET and N-MOSFET operate in complementary synchronous rectification, enabling high efficiency at light and heavy loads.
As a variant of the NCx6324C family, it uses external MODE pin logic (high = forced PWM, low = automatic PFM/PWM) rather than integrated power-good monitoring. It supports soft-start (100 µs 10%–90% ramp), cycle-by-cycle current limiting (2.8 A typical peak), and active output discharge via internal 500 Ω SW-to-PGND resistor when disabled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 5.5 V - supports single-cell Li-ion (2.7–4.2 V) and triple-cell alkaline (3.0–4.5 V) without external regulators. |
| Output Current | Up to 2 A continuous - sufficient for powering ARM Cortex-A/M cores, LPDDR memory rails, or camera ISPs. |
| Switching Frequency | 3.0 MHz ±10% - enables use of sub-2.2 µH inductors and <10 µF ceramic output capacitors, reducing board area. |
| Feedback Reference | 600 mV ±6 mV - sets output voltage via external resistor divider; allows precise 0.6 V to VIN adjustment. |
| Thermal Shutdown | 150°C threshold with 25°C hysteresis - protects die during sustained overload or poor PCB thermal design. |
| Quiescent Current | 5.7 mA in forced PWM mode, 30 µA in PFM mode - extends battery life in always-on subsystems like CAN wake-up receivers. |
| Enable Threshold | EN high = >1.1 V, low = <0.4 V - compatible with 1.8 V/3.3 V GPIOs and supports clean power sequencing. |
Pinout & Package
The NCV6324CMTAAWTBG is housed in a WDFNW8 (wettable flank) 2.0 × 2.0 × 0.75 mm package (Case 511CL), featuring an exposed thermal pad for enhanced heat dissipation and solder joint inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PGND | Power Ground | Primary return path for high-current switch node; must connect directly to system ground plane under exposed pad. |
| 2 SW | Switch Node | Drives external inductor; carries high di/dt; requires short, wide copper pour to minimize EMI and voltage spikes. |
| 3 AGND | Analog Ground | Reference for FB, EN, MODE; must tie to system ground at single point near IC to avoid noise coupling. |
| 4 FB | Feedback Input | Senses output voltage via resistor divider; 600 mV reference enables accurate output programming. |
| 5 EN | Enable Input | Active-high digital control; internal 10 nA pull-down allows direct connection to microcontroller GPIO. |
| 6 MODE | Mode Selection | High = forced PWM (fixed 3 MHz), low = automatic PFM/PWM - selects efficiency vs. ripple trade-off. |
| 7 AVIN | Analog Supply | Powers internal bias circuits; requires local 1 µF ceramic bypass capacitor placed adjacent to pin. |
| 8 PVIN | Power Input | Main input supply rail; requires ≥10 µF ceramic capacitor with low ESL, placed within 2 mm of pin. |
| Pad (Exposed) | Thermal Pad | Internally unconnected but must be soldered to ground plane for thermal performance and mechanical reliability. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous Rectification | Integrated P-MOSFET (130 mΩ @ 5 V) and N-MOSFET (100 mΩ @ 5 V) eliminate external diode losses, enabling >90% efficiency at 1 A. |
| Automatic PWM/PFM Mode | Seamless transition between fixed-frequency PWM (medium/heavy load) and variable-frequency PFM (light load), reducing no-load IQ to 30 µA. |
| Active Output Discharge | Internal 500 Ω resistor connects SW to PGND when EN is low, discharging output capacitance rapidly to prevent residual voltage hold-up. |
| AEC-Q100 Qualified | Qualified to Grade 1 (−40°C to +125°C junction), PPAP-capable, and manufactured in IATF 16949-certified facilities for automotive use. |
| Wettable Flank Package | WDFNW8 package enables automated optical solder-joint inspection (AOI) for high-reliability automotive PCB assembly. |
Applications
| Automotive Infotainment Power Rail | USB-C PD Sink Regulation |
|---|---|
Use Scenario: Supplies 1.1 V core voltage to SoC in head-unit systems operating from 5 V USB-C bus or 12 V vehicle supply (with pre-regulator). IC Role / Device Role / Timing Role: Primary DC-DC step-down regulator delivering stable 2 A output with fast transient response to handle CPU burst loads. Use Value: 3 MHz operation minimizes inductor size (<1.5 mm height), enabling integration into space-constrained dash displays. | Use Scenario: Regulates 5 V USB-C input down to 3.3 V for USB peripheral controllers and Type-C port logic in automotive telematics modules. IC Role / Device Role / Timing Role: Point-of-load converter with MODE pin controlled by MCU to force PWM during data transfer (low noise) and auto-PFM during idle (low IQ). Use Value: Active discharge ensures rapid VBUS ramp-down during hot-plug disconnect, meeting USB-C specification timing requirements. |
| ADAS Camera Module Core Supply | Industrial Handheld Scanner PMIC Sub-Rail |
Use Scenario: Powers image signal processor (ISP) and MIPI CSI-2 interface in rear-view camera modules powered by 3.7 V Li-ion battery. IC Role / Device Role / Timing Role: High-efficiency buck converter delivering 1.2 V @ 1.5 A with tight line/load regulation (±0.5%/A FB drift). Use Value: AEC-Q100 qualification and −40°C to +125°C operation ensure reliability in under-hood temperature cycling. | Use Scenario: Generates 1.8 V rail for FPGA configuration and sensor interface in ruggedized barcode scanners using 3× alkaline cells (4.5 V nominal). IC Role / Device Role / Timing Role: Battery-optimized buck converter maintaining regulation down to 2.5 V input while supporting 2 A peak during scan bursts. Use Value: Soft-start (100 µs ramp) prevents inrush current tripping battery protection ICs during cold start. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2164GQZ-Z (Monolithic Power) | 4 MHz switching, 3 A rating, QFN-10 package; lacks AEC-Q100 qualification and wettable flanks. | Targeted at consumer portables; not validated for automotive temperature or vibration stress. | Choose for higher current or faster switching where automotive compliance is unnecessary. |
| TPS6286413ARQYR (Texas Instruments) | 2.5 V–5.5 V input, 2 A, 4 MHz, WSON-10 with thermal pad; includes I²C programmability and power-good output. | Supports dynamic voltage scaling and fault reporting - adds complexity and cost over fixed-function NCV6324C. | Choose when system-level telemetry or multi-rail coordination is required. |
Compared with MP2164GQZ-Z and TPS6286413ARQYR, the NCV6324CMTAAWTBG offers automotive-grade reliability in a smaller 2×2 mm footprint with lower BOM count (no external PG circuitry), making it optimal for cost-sensitive, space-constrained AEC-Q100 designs where fixed output configuration suffices.
Availability
NCV6324CMTAAWTBG is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and industrial handheld scanners requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for NCV6324CMTAAWTBG 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.
The NCV6324CMTAAWTBG belongs to onsemi's automotive-qualified DC-DC converter product line, designed specifically for subsystem power management in safety-critical and thermally demanding environments such as infotainment head units and surround-view camera ECUs.
FAQ
What is the function of the MODE pin on the NCV6324CMTAAWTBG?
The MODE pin on the NCV6324CMTAAWTBG selects the operating mode: a logic high (>1.1 V) forces fixed-frequency PWM operation at 3 MHz, while a logic low (<0.4 V) enables automatic PFM/PWM mode for optimal light-load efficiency. This pin replaces the PG function found on NCV6324B variants and is exclusive to the 'C' version. The NCV6324CMTAAWTBG does not provide power-good signaling.
Does the NCV6324CMTAAWTBG support AEC-Q100 qualification?
Yes, the NCV6324CMTAAWTBG is AEC-Q100 qualified (Grade 1, −40°C to +125°C junction temperature) and PPAP-capable. It is manufactured in onsemi's IATF 16949-certified facilities and marked with the 'NCV' prefix to denote automotive-specific process controls and change management - a requirement for deployment in automotive infotainment and ADAS systems.
What package type does the NCV6324CMTAAWTBG use, and why is it significant?
The NCV6324CMTAAWTBG uses the WDFNW8 (wettable flank) 2.0 × 2.0 × 0.75 mm package (Case 511CL). Its wettable flanks enable automated optical inspection (AOI) of solder joints - a critical requirement for zero-defect automotive PCB assembly. The exposed thermal pad also improves thermal resistance (RJB = 30°C/W), supporting 2 A operation in compact layouts.
Can the NCV6324CMTAAWTBG be used with a 1.0 µH inductor and 10 µF output capacitor?
Yes, the NCV6324CMTAAWTBG is optimized for 1.0 µH inductors and 10 µF ceramic output capacitors, as confirmed in the datasheet's typical application circuits and compensation network design. This combination yields ~50 kHz double-pole frequency, matching the internal compensation for stable loop response. Inductor saturation current must exceed 2.8 A peak, and capacitor ESR should be <10 mΩ for minimal ripple.
How does the NCV6324CMTAAWTBG handle output discharge when disabled?
When the EN pin is pulled low, the NCV6324CMTAAWTBG activates an internal 500 Ω discharge resistor between the SW pin and PGND, actively discharging the output capacitor. This ensures rapid VOUT decay - critical for systems requiring strict power-rail sequencing or avoiding back-powering of upstream circuitry. Discharge time depends on COUT value; for 10 µF, typical discharge to <100 mV takes <5 ms.
NCV6324CMTAAWTBG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- 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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 8-WDFNW (2x2)
NCV6324CMTAAWTBG FAQ
1.How can I place an order for NCV6324CMTAAWTBG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV6324CMTAAWTBG 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 NCV6324CMTAAWTBG reliable?
The price and inventory of NCV6324CMTAAWTBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV6324CMTAAWTBG is usually 5 days.
3.What payment methods are accepted for NCV6324CMTAAWTBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV6324CMTAAWTBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV6324CMTAAWTBG?
NCV6324CMTAAWTBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV6324CMTAAWTBG 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 NCV6324CMTAAWTBG?
For technical support, including NCV6324CMTAAWTBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV6324CMTAAWTBG requirements.
6.How does Aetrix verify that NCV6324CMTAAWTBG is sourced from the original manufacturer or authorized distributors?
All NCV6324CMTAAWTBG 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 NCV6324CMTAAWTBG meets industry standards.
7.What is the process for return or replacement of NCV6324CMTAAWTBG?
All NCV6324CMTAAWTBG units undergo pre-shipment inspection (PSI). If there is an issue with NCV6324CMTAAWTBG, 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 NCV6324CMTAAWTBG part is unused and in its original packaging.
Return procedure for NCV6324CMTAAWTBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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