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onsemi NCV6324BMTAAWTBG
- Part No.:
- NCV6324BMTAAWTBG
- Manufacturer:
- onsemi
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
NCV6324BMTAAWTBG.pdf
- Description:
- IC REG BUCK ADJ 2A 8WDFNW
- Quantity:
- Payment:
- Shipping:
Inventory:5,739
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Product details
Overview
NCV6324BMTAAWTBG 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 integrates power-good monitoring and active output discharge. It is used in point-of-load regulation for infotainment processors and camera modules in automotive telematics.
For engineers reviewing the NCV6324BMTAAWTBG datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q100 qualification, WDFNW8 wettable flank package for automated optical inspection, 3 MHz operation enabling <1 µH inductors, and integrated PG output with 90% VFB threshold and 5% hysteresis.
Technical Context
The NCV6324BMTAAWTBG implements voltage-mode control with input feedforward compensation to maintain regulation across 2.5–5.5 V input range. Its internal P-channel and N-channel MOSFETs feature typical RDS(on) of 160 mΩ and 110 mΩ respectively at 3.6 V, enabling high efficiency in both PWM and automatic PFM modes.
It employs cycle-by-cycle current limiting (2.8 A typical peak), thermal shutdown at 150 °C with 25 °C hysteresis, and soft-start with 100 µs 10–90% ramp time. The PG/MODE pin functions as open-drain Power Good output - not mode control - confirming stable regulation within ±5% of target voltage.
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 pre-regulation. |
| Output Current | Up to 2.0 A continuous - sufficient for powering ARM Cortex-A cores or image signal processors in automotive ADAS cameras. |
| Switching Frequency | 3.0 MHz (±10%) - enables use of 1.0 µH inductors and reduces footprint vs. 500 kHz converters by >60%. |
| Feedback Reference | 600 mV (±1%) - sets output via resistor divider; allows precise 0.6 V to VIN adjustment with <±0.5%/A load regulation. |
| Power Good Threshold | 90% of VFB (540 mV nominal) with 5% hysteresis - provides reliable system reset signaling during brown-out conditions. |
| Quiescent Current | 30 µA in PFM mode - extends battery life in always-on vehicle connectivity modules. |
| Thermal Shutdown | 150 °C with 25 °C hysteresis - protects against sustained overload in sealed ECU enclosures. |
Pinout & Package
NCV6324BMTAAWTBG uses the WDFNW8 (Case 511CL) wettable flank package: 2.0 mm × 2.0 mm, 0.5 mm pitch, 0.75 mm max height, with exposed thermal pad soldered to PCB ground for enhanced thermal performance (RθJA = 62 °C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - PGND | Power Ground | Main return path for high-current switch node; must connect directly to low-impedance system ground plane. |
| 2 - SW | Switch Node | Drives external inductor; carries high di/dt; requires minimized loop area to reduce EMI and voltage spikes. |
| 3 - AGND | Analog Ground | Reference for FB, EN, and internal error amplifier; isolated from PGND except at single-point star ground. |
| 4 - FB | Feedback Input | Senses output voltage via resistor divider; 600 mV reference enables accurate programmable regulation. |
| 5 - EN | Enable Input | Logic-level control (1.1 V high threshold); includes 5 µs internal filter for noise immunity in automotive environments. |
| 6 - PG | Power Good Output | Open-drain output indicating valid regulation; sinks 5 mA when low; left floating if unused. |
| 7 - AVIN | Analog Supply | Bypassed with ≥1 µF ceramic capacitor; powers internal analog circuitry including error amplifier and reference. |
| 8 - PVIN | Power Input | Main input rail; bypassed with ≥10 µF ceramic capacitor placed adjacent to pin to suppress high-frequency ripple. |
| Pad - Exposed Pad | Thermal & Electrical Ground | Internally unconnected but must be soldered to PCB ground plane for thermal dissipation and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Qualified for automotive applications per Grade 1 (−40 °C to +125 °C junction), PPAP-capable with unique site controls. |
| Wettable Flank Package | WDFNW8 enables automated optical inspection (AOI) of solder joints - critical for zero-defect automotive manufacturing. |
| Integrated Power Good | Dedicated open-drain PG output confirms regulation stability with 90% VFB threshold and 5% hysteresis for robust sequencing. |
| Active Output Discharge | 500 Ω internal discharge path from SW to PGND ensures rapid output collapse (<1 ms) when disabled - prevents back-powering. |
| 3 MHz Fixed-Frequency PWM | Enables ultra-compact filter design: 1 µH inductor + 10 µF ceramic output cap achieves stable regulation with minimal board area. |
| UVLO with Hysteresis | 2.4 V falling threshold with 100 mV hysteresis prevents oscillation during battery sag in cold-cranking scenarios. |
Applications
| Automotive Infotainment SoC Core Rail | ADAS Camera Module Power |
|---|---|
|
Use Scenario: Supplies 1.1 V core voltage to quad-core ARM-based infotainment processor under varying battery conditions (8–16 V system with DC/DC pre-regulator). IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering up to 2 A with fast transient response to handle CPU burst loads. Use Value: 3 MHz operation minimizes inductor size while maintaining <20 mV output ripple during 1 A step load changes - critical for digital logic stability. |
Use Scenario: Powers 2.8 V I/O and 1.2 V core rails for CMOS image sensor and ISP in rear-view camera ECU. IC Role / Device Role / Timing Role: Secondary buck regulator with PG output synchronized to camera boot sequence for safe initialization. Use Value: Integrated active discharge clears residual charge before power cycling, eliminating image ghosting during hot-restart events. |
| Telematics Control Unit (TCU) Subsystem | Automotive USB-C PD Sink Interface |
|
Use Scenario: Generates 3.3 V for LTE modem, GNSS receiver, and CAN transceiver in connected vehicle gateway. IC Role / Device Role / Timing Role: High-efficiency intermediate rail converter operating in automatic PFM/PWM mode to extend battery backup runtime. Use Value: 30 µA quiescent current in PFM mode enables >100-hour standby with coin-cell backup - meeting OEM low-power requirements. |
Use Scenario: Provides regulated 5 V output from vehicle 12 V supply to USB-C port supporting UFP devices (e.g., dashcam, phone charger). IC Role / Device Role / Timing Role: Pre-regulator stepping down 12 V to 5 V before USB-C PD controller; enables compact form factor. Use Value: WDFNW8 wettable flank package ensures AOI-verified solder joints - mandatory for functional safety compliance in passenger cabin electronics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV6324BMTAATBG | Same die, WDFN8 (non-wettable flank) package; lacks AOI-compatible side-wall plating. | Suitable for non-automotive industrial designs where optical solder inspection is not required. | Select NCV6324BMTAAWTBG for automotive production; use NCV6324BMTAATBG only if cost-sensitive and AOI not mandated. |
| MP2164GJ-Z | 3.5 MHz switching, 2 A rating, but no integrated PG output; requires external supervisor for power sequencing. | Used in consumer portable devices where AEC-Q100 and PG functionality are not needed. | Choose NCV6324BMTAAWTBG when automotive qualification, PG signaling, and wettable flanks are mandatory. |
Compared with NCV6324BMTAATBG, the NCV6324BMTAAWTBG adds wettable flank plating for AOI and identical electrical specs; versus MP2164GJ-Z, it provides integrated PG and AEC-Q100 compliance - making it the sole choice for safety-critical automotive subsystems requiring verified solder integrity and regulated power sequencing.
Availability
NCV6324BMTAAWTBG is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, telematics control units, and USB-C PD sink interfaces requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for NCV6324BMTAAWTBG 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 NCV6324BMTAAWTBG belongs to onsemi's automotive-qualified DC-DC converter product line, designed specifically for space-constrained, thermally demanding subsystems in vehicles - emphasizing AEC-Q100 reliability, wettable flank manufacturability, and fast transient response.
FAQ
What is the function of the MODE/PG pin on the NCV6324BMTAAWTBG?
The MODE/PG pin on the NCV6324BMTAAWTBG serves exclusively as an open-drain Power Good (PG) output - not a mode selector. It asserts low when output voltage falls below 90% of the feedback reference (540 mV), and goes high-impedance when regulation is valid. This behavior is fixed for the "B" variant; external mode control is only available on "C" variants like NCV6324CMTAAWTBG.
Does the NCV6324BMTAAWTBG support forced PWM mode?
No, the NCV6324BMTAAWTBG does not support forced PWM mode. It operates automatically in either PWM (medium/heavy load) or PFM (light load) based on output current demand. Forced PWM mode is exclusive to the "C" variant (e.g., NCV6324CMTAAWTBG), which uses the same pin for MODE input with defined high/low voltage thresholds.
What is the maximum recommended output capacitance for stable operation of the NCV6324BMTAAWTBG?
The NCV6324BMTAAWTBG is optimized for 10 µF ceramic output capacitors with low ESR/ESL, as validated in the datasheet's typical application circuits and stability analysis. While values up to 22 µF are permissible per design guidelines, exceeding 10 µF without compensating the feedback network (e.g., adjusting Cfb) may degrade phase margin and cause ringing during load transients.
How does the active output discharge feature work in the NCV6324BMTAAWTBG?
When the EN pin is pulled low, the NCV6324BMTAAWTBG activates an internal ~500 Ω discharge path between the SW node and PGND. This rapidly discharges the output capacitor through the high-side MOSFET channel, collapsing VOUT in under 1 ms. This prevents back-powering of upstream circuitry and eliminates residual voltage that could cause latch-up in downstream ICs.
Is the NCV6324BMTAAWTBG pin-compatible with the NCP6324BMTAAWTBG?
Yes, the NCV6324BMTAAWTBG and NCP6324BMTAAWTBG share identical pinout, electrical specifications, and WDFNW8 package dimensions. The "NCV" prefix denotes automotive qualification (AEC-Q100 Grade 1, PPAP-capable, unique site controls), while "NCP" is for commercial/industrial use - both are mechanically and electrically interchangeable in layout.
NCV6324BMTAAWTBG 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)
NCV6324BMTAAWTBG FAQ
1.How can I place an order for NCV6324BMTAAWTBG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV6324BMTAAWTBG 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 NCV6324BMTAAWTBG reliable?
The price and inventory of NCV6324BMTAAWTBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV6324BMTAAWTBG is usually 5 days.
3.What payment methods are accepted for NCV6324BMTAAWTBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV6324BMTAAWTBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV6324BMTAAWTBG?
NCV6324BMTAAWTBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV6324BMTAAWTBG 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 NCV6324BMTAAWTBG?
For technical support, including NCV6324BMTAAWTBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV6324BMTAAWTBG requirements.
6.How does Aetrix verify that NCV6324BMTAAWTBG is sourced from the original manufacturer or authorized distributors?
All NCV6324BMTAAWTBG 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 NCV6324BMTAAWTBG meets industry standards.
7.What is the process for return or replacement of NCV6324BMTAAWTBG?
All NCV6324BMTAAWTBG units undergo pre-shipment inspection (PSI). If there is an issue with NCV6324BMTAAWTBG, 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 NCV6324BMTAAWTBG part is unused and in its original packaging.
Return procedure for NCV6324BMTAAWTBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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