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onsemi NCV6324BMTAATBG
- Part No.:
- NCV6324BMTAATBG
- Manufacturer:
- onsemi
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
NCV6324BMTAATBG.pdf
- Description:
- IC REG BUCK ADJ 2A 8WDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,725
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Product details
Overview
NCV6324BMTAATBG from onsemi is an automotive-grade synchronous buck converter optimized for point-of-load regulation in portable and battery-powered systems. It delivers up to 2 A output current with externally adjustable voltage (0.6 V to VIN), operates across 2.5 V–5.5 V input, uses 3 MHz fixed-frequency PWM/PFM switching, and integrates power-good monitoring - enabling reliable power sequencing in cellular phones, USB-powered devices, and automotive infotainment subsystems.
For engineers reviewing the NCV6324BMTAATBG datasheet, pinout, applications, or equivalent options, key selection considerations include its AEC-Q100 qualification, WDFN8 wettable-flank package compatibility, integrated active discharge, thermal shutdown at 150 °C, and 600 mV feedback reference with ±1% accuracy over temperature.
Technical Context
The NCV6324BMTAATBG implements voltage-mode control with input feedforward compensation to maintain regulation across wide input ranges (2.5 V–5.5 V). Its 3 MHz switching frequency enables compact 1 µH inductors and 10 µF ceramic output capacitors while sustaining >85% peak efficiency at 1.8 V/1 A output.
This variant (B suffix) features automatic PWM/PFM mode transition, a dedicated open-drain Power Good (PG) output with 90% VFB threshold and 5% hysteresis, soft-start timing of 100 µs (10%–90%), and internal active discharge via 500 Ω SW-to-PGND path when disabled - all within a thermally enhanced 2.0 × 2.0 × 0.75 mm WDFN8 package.
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/NiMH (3.6–4.5 V) without external regulators. |
| Output Current | Up to 2.0 A continuous - sufficient for core logic rails in smartphones and USB PD sink applications. |
| Switching Frequency | 3.0 MHz ±10% - enables <2.0 mm² total passive footprint (1 µH + 10 µF) and reduces EMI fundamental below 10 MHz. |
| Feedback Reference | 600 mV ±1% - sets output voltage via external resistor divider; enables precise 0.6 V–5.5 V programmability with <±1.5% total error including line/load regulation. |
| Power Good Threshold | 90% of VFB (540 mV) with 5% hysteresis - provides clean, glitch-free system reset signaling during startup and brownout conditions. |
| Thermal Shutdown | 150 °C typical with 25 °C hysteresis - protects against sustained overload or poor PCB thermal design without latch-up. |
| Quiescent Current | 30 µA in PFM mode - extends battery runtime in always-on subsystems like modem standby or sensor hubs. |
Pinout & Package
NCV6324BMTAATBG is housed in a Pb-free, RoHS-compliant 2.0 × 2.0 × 0.75 mm WDFN8 package (Case 511BE) with wettable flanks for automated optical solder-joint inspection. The exposed thermal pad (Pin 9) must be soldered to system ground for optimal 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 ground plane under IC. |
| 2 - SW | Switch Node | Drives external inductor; carries full switching current (up to 2.8 A peak); requires minimal loop area to reduce EMI. |
| 3 - AGND | Analog Ground | Reference for FB, EN, AVIN; must tie to system ground at single point near exposed pad to avoid noise coupling. |
| 4 - FB | Feedback Input | Senses output voltage via resistor divider; 600 mV reference enables accurate output programming with <±1.5% total error. |
| 5 - EN | Enable Input | Active-high logic control (1.1 V threshold); includes 5 µs internal filter for robust power sequencing in noisy environments. |
| 6 - PG | Power Good Output | Open-drain status signal indicating valid regulation; sinks 5 mA max at 0.3 V; used for processor reset or system enable coordination. |
| 7 - AVIN | Analog Supply | Bias supply for internal reference, error amp, and logic; requires ≥1 µF ceramic bypass close to pin for stability. |
| 8 - PVIN | Power Input | Main input rail connection; requires ≥10 µF low-ESR ceramic capacitor placed adjacent to pin to suppress switching transients. |
Key Features
| Feature | Design Value |
|---|---|
| Automated PWM/PFM Mode Transition | Eliminates manual mode control; maintains >80% efficiency down to 10 mA load without external circuitry. |
| Integrated Active Output Discharge | 500 Ω internal SW-to-PGND path discharges output capacitor rapidly upon disable - prevents floating rail issues in multi-rail systems. |
| AEC-Q100 Qualified (Grade 1) | Validated for −40 °C to +125 °C operation with PPAP support - suitable for automotive body electronics and infotainment modules. |
| Wettable Flank WDFN8 Package | Enables AOI-compatible solder-joint inspection without X-ray; improves manufacturing yield in high-reliability production lines. |
| Voltage-Mode Feedforward Control | Compensates for input ripple in real time - maintains tight output regulation (<±1%) even with 100 mVPP input variation at 3 MHz. |
Applications
| Smartphone Core Rail Regulation | USB-Powered Peripheral Power |
|---|---|
|
Use Scenario: Regulating 1.2 V core voltage for application processors in LTE smartphones powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering up to 2 A with fast transient response (<50 µs recovery) and precise 1.2 V ±1.5% accuracy. Use Value: Enables stable processor operation across full battery range (4.2 V → 3.0 V) while maintaining >87% efficiency at 1.2 V/1.5 A, reducing thermal load in thin form factors. |
Use Scenario: Providing regulated 3.3 V power to USB-C accessories (e.g., dongles, hubs) drawing up to 1.8 A from 5 V USB PD source. IC Role / Device Role / Timing Role: Point-of-load converter stepping down 5 V USB input to 3.3 V with integrated PG signaling for safe hot-plug detection. Use Value: Delivers clean, sequenced 3.3 V rail with <10 mVPP ripple in PWM mode and automatic light-load PFM entry - extending accessory battery life without external mode control. |
| Automotive Infotainment SoC Supply | Digital Camera Image Sensor Bias |
|
Use Scenario: Powering 1.8 V I/O domain of automotive-grade SoCs in head-unit displays, requiring AEC-Q100 compliance and robust ESD immunity. IC Role / Device Role / Timing Role: Automotive-qualified buck converter with 2 kV HBM ESD rating, thermal shutdown at 150 °C, and PG output for SoC reset coordination. Use Value: Meets stringent automotive reliability requirements while enabling compact layout via 3 MHz switching - reducing board area by >40% vs. 500 kHz alternatives. |
Use Scenario: Generating low-noise 2.8 V bias for CMOS image sensors in DSLR cameras, where output ripple directly impacts image SNR. IC Role / Device Role / Timing Role: High-frequency buck regulator with 100 µs soft-start and <5 mVPP output ripple in PWM mode, minimizing sensor readout artifacts. Use Value: Achieves <−65 dBc ripple suppression at 3 MHz switching frequency - eliminating visible banding in high-resolution still captures without additional LDO post-regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2143GQ-Z | 2.5–5.5 V input, 2 A, 2 MHz, no PG output, no AEC-Q100 qualification | Lacks power-good signaling and automotive qualification; suited for consumer portable designs only | Select when cost sensitivity outweighs need for PG signaling or automotive compliance |
| TPS6286418RRLR | 2.7–5.5 V input, 2 A, 4 MHz, integrated PG, AEC-Q100 Grade 2 (−40 °C to +105 °C) | Narrower input range, higher junction temp limit (105 °C vs. 125 °C), smaller 1.6 × 1.6 mm package | Prefer for space-constrained automotive modules requiring tighter thermal margin and smaller footprint |
Compared with MP2143GQ-Z and TPS6286418RRLR, the NCV6324BMTAATBG uniquely combines AEC-Q100 Grade 1 qualification, full 2.5–5.5 V input support, and integrated PG output in a thermally optimized 2.0 × 2.0 mm wettable-flank package - making it the only option qualified for under-hood infotainment power delivery with guaranteed 125 °C junction operation.
Availability
NCV6324BMTAATBG is available at Aetrix Electronics and suitable for automotive infotainment systems, smartphone power management, and USB-C peripheral designs requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 compliance.
Supply support for NCV6324BMTAATBG 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 focused on energy-efficient innovation, delivering silicon solutions for automotive, industrial, cloud, and IoT applications with emphasis on functional safety and sustainability.
The NCV6324BMTAATBG belongs to onsemi's automotive-qualified DC-DC converter portfolio, engineered specifically for high-efficiency, small-footprint point-of-load regulation in safety-critical vehicle subsystems such as ADAS displays and telematics gateways.
FAQ
What is the maximum output current capability of the NCV6324BMTAATBG?
The NCV6324BMTAATBG delivers up to 2.0 A continuous output current under recommended operating conditions (TJ ≤ 125 °C, 3.6 V input, 1.8 V output). Peak current limit is 2.8 A typical, with cycle-by-cycle protection preventing damage during short transients. Derating applies above 85 °C ambient or with inadequate PCB copper area.
Does the NCV6324BMTAATBG require external components for basic operation?
Yes - the NCV6324BMTAATBG requires an external inductor (typically 1 µH), input capacitor (≥10 µF ceramic), output capacitor (≥10 µF ceramic), and resistor divider (R1/R2) for feedback. The datasheet specifies minimum values and layout guidelines; omitting any compromises regulation, efficiency, or thermal performance.
How does the Power Good (PG) function operate on the NCV6324BMTAATBG?
The NCV6324BMTAATBG's PG pin is an open-drain output that goes high-impedance when output voltage reaches ≥90% of target (e.g., ≥540 mV for 0.6 V reference) and pulls low if output drops below that threshold. Startup delay is 1.15 ms from EN rising edge; shutdown delay is 8 µs from EN falling edge - ensuring precise system-level power sequencing.
Is the NCV6324BMTAATBG compatible with wettable flank solder inspection?
Yes - the NCV6324BMTAATBG uses the WDFN8 package with wettable flanks (Case 511BE), enabling automated optical inspection (AOI) of solder joints without requiring X-ray. This feature is explicitly supported in onsemi's packaging documentation and verified in IPC-A-610 Class 3 assembly processes.
What thermal performance can be expected from the NCV6324BMTAATBG in a standard 4-layer PCB?
On an 80 × 50 mm 4-layer board with 1 oz internal power/ground planes, the NCV6324BMTAATBG achieves RθJA = 62 °C/W. With proper thermal pad soldering and ≥4 thermal vias under the exposed pad, junction temperature rise is ~62 °C at 2 A/3.6 V input - staying within the 125 °C max operating limit at 63 °C ambient.
NCV6324BMTAATBG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- 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
- Supplier Device Package:
- 8-WDFN (2x2)
NCV6324BMTAATBG FAQ
1.How can I place an order for NCV6324BMTAATBG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV6324BMTAATBG 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 NCV6324BMTAATBG reliable?
The price and inventory of NCV6324BMTAATBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV6324BMTAATBG is usually 5 days.
3.What payment methods are accepted for NCV6324BMTAATBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV6324BMTAATBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV6324BMTAATBG?
NCV6324BMTAATBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV6324BMTAATBG 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 NCV6324BMTAATBG?
For technical support, including NCV6324BMTAATBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV6324BMTAATBG requirements.
6.How does Aetrix verify that NCV6324BMTAATBG is sourced from the original manufacturer or authorized distributors?
All NCV6324BMTAATBG 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 NCV6324BMTAATBG meets industry standards.
7.What is the process for return or replacement of NCV6324BMTAATBG?
All NCV6324BMTAATBG units undergo pre-shipment inspection (PSI). If there is an issue with NCV6324BMTAATBG, 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 NCV6324BMTAATBG part is unused and in its original packaging.
Return procedure for NCV6324BMTAATBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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