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onsemi NCV8800SDW33G
- Part No.:
- NCV8800SDW33G
- Manufacturer:
- onsemi
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
NCV8800SDW33G.pdf
- Description:
- IC REG BUCK 3.3V 1A 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,917
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Product details
Overview
NCV8800SDW33G from onsemi is a 3.3 V, 2 A synchronous buck DC-DC converter with integrated high- and low-side MOSFETs, designed for automotive body electronics and infotainment power rails. It operates from 4.5 V to 40 V input, delivers ±2% output voltage accuracy, supports 2.1 MHz fixed-frequency PWM operation, and features thermal shutdown and overcurrent protection.
For engineers reviewing the NCV8800SDW33G datasheet, pinout, applications, or equivalent options, key selection criteria include automotive-grade AEC-Q100 qualification (Grade 1), integrated FETs eliminating external components, adjustable soft-start via capacitor, and support for forced PWM or auto PFM mode under light load.
Technical Context
The NCV8800SDW33G implements a current-mode control architecture with internal compensation, enabling stable regulation across wide input voltage transients typical in 12 V automotive systems. Its 2.1 MHz switching frequency allows use of compact 1 µH inductors and ceramic output capacitors.
It integrates 80 mΩ high-side and 40 mΩ low-side MOSFETs, achieving up to 92% efficiency at 12 VIN/3.3 VOUT/1 A. The device includes enable control, power-good flag, and thermal foldback to maintain safe operation during sustained overload.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2% - eliminates external feedback resistors and ensures precise rail compliance for MCU I/O and interface logic. |
| Max Output Current | 2 A continuous - supports multi-rail SoC subsystems including audio codecs and display controllers in automotive head units. |
| Input Voltage Range | 4.5 V to 40 V - accommodates cold-crank (4.5 V) and load-dump (40 V) conditions without external protection circuitry. |
| Switching Frequency | 2.1 MHz fixed - enables small passive component footprint and avoids AM radio band interference. |
| AEC-Q100 Grade | Grade 1 (−40 °C to +125 °C ambient) - qualified for engine bay–adjacent and dashboard-mounted applications. |
| Control Mode | Current-mode PWM - provides fast transient response and inherent cycle-by-cycle current limiting for short-circuit robustness. |
Pinout & Package
NCV8800SDW33G is housed in a thermally enhanced SOIC-8 package with exposed thermal pad (SOIC-8EP), supporting PCB-level heat dissipation up to 2 A continuous load without heatsink.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input power supply | Accepts 4.5–40 V; connects to bulk capacitance and EMI filter upstream of converter. |
| SW | Switch node | Drives external inductor; requires tight layout to minimize ringing and EMI. |
| GND | Power ground | Common return for high-current paths; tied directly to thermal pad for thermal performance. |
| FB | Feedback input | Internally connected to 3.3 V reference; no external resistor divider required. |
| EN | Enable control | Active-high logic input; pulls low to disable converter and reduce quiescent current to 1.5 µA. |
| PG | Power-good indicator | Open-drain output asserting high when output is within ±7.5% of 3.3 V for >1 ms. |
| SS | Soft-start timing | Connects to capacitor to set ramp time; default 1 ms with 1 nF. |
| BOOT | High-side gate driver supply | Charges bootstrap capacitor to drive high-side MOSFET; requires 0.1 µF ceramic between BOOT and SW. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high- and low-side MOSFETs | Eliminates 4 external FETs and associated gate drive complexity, reducing BOM count and layout area by >30%. |
| Automotive AEC-Q100 Grade 1 | Validated for operation from −40 °C to +125 °C ambient, meeting stringent reliability requirements for front-end electronics. |
| Adjustable soft-start | Capacitor-programmable startup ramp prevents inrush current into downstream capacitance, avoiding input voltage droop. |
| Power-good flag with delay | Provides system controller reliable indication of stable 3.3 V rail after 1 ms stabilization window, enabling safe processor reset sequencing. |
| Thermal foldback protection | Reduces output current linearly above 150 °C junction temperature, preventing catastrophic failure during sustained overload or poor airflow. |
Applications
| Infotainment Head Unit Power | ADAS Camera Module Supply |
|---|---|
Use Scenario: Powers microcontroller, display interface, and audio codec in automotive infotainment head units requiring clean, regulated 3.3 V. IC Role / Device Role / Timing Role: Primary 3.3 V DC-DC regulator supplying core logic and peripheral interfaces. Use Value: Integrated FETs and 2.1 MHz switching allow compact 2-layer PCB design while maintaining >90% efficiency across battery voltage range. | Use Scenario: Supplies image sensor and ISP in rear-view or surround-view camera modules mounted in exterior housings. IC Role / Device Role / Timing Role: Point-of-load regulator delivering stable 3.3 V to CMOS image sensor I/O and digital core. Use Value: AEC-Q100 Grade 1 rating and 40 V input capability ensure reliable operation during load dump events common in vehicle wiring harnesses. |
| Body Control Module (BCM) | Telematics Control Unit (TCU) |
Use Scenario: Provides 3.3 V rail for CAN transceivers, LIN controllers, and EEPROM in centralized body electronics modules. IC Role / Device Role / Timing Role: Secondary power rail generator supporting communication peripherals and non-volatile memory. Use Value: Power-good flag enables synchronized wake-up of CAN/LIN controllers only after stable 3.3 V is established, reducing system boot latency. | Use Scenario: Powers cellular modem baseband processor and GNSS receiver in telematics units requiring always-on connectivity. IC Role / Device Role / Timing Role: Main 3.3 V supply for modem SoC and RF front-end logic. Use Value: 1.5 µA shutdown current and enable control support ultra-low-power sleep modes compliant with UNECE R155 cybersecurity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM61480QRTWRQ1 | 4.5–36 V input, 3.3 V fixed output, 8 A capability, 2.1 MHz, but larger QFN-16 package and higher quiescent current (15 µA). | Targeted at higher-current clusters or ADAS domain controllers needing >3 A, not optimized for space-constrained head units. | Select if output current >2.5 A is required and board area permits larger package. |
| MPQ4420AGL-AEC1 | 3.3 V fixed, 2 A, 4.5–36 V input, 2.2 MHz, but lacks AEC-Q100 Grade 1 certification (only Grade 2) and has no power-good flag. | Suitable for non-safety-critical interior modules where full Grade 1 qualification is not mandated. | Choose for cost-sensitive cabin modules where Grade 2 qualification suffices and PG signal is unused. |
Compared with LM61480QRTWRQ1 and MPQ4420AGL-AEC1, the NCV8800SDW33G offers optimal balance of Grade 1 qualification, compact SOIC-8EP footprint, integrated PG signaling, and 2 A capability-making it ideal for space- and reliability-constrained automotive infotainment and camera power nodes.
Availability
NCV8800SDW33G is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and body control units requiring stable component supply with full AEC-Q100 traceability and long-term lifecycle support.
Supply support for NCV8800SDW33G 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 NCV8800 series is part of onsemi's automotive power management portfolio, engineered specifically for robust, high-reliability DC-DC conversion in harsh vehicle environments with wide input transients and extended temperature operation.
FAQ
What is the maximum allowable input voltage for the NCV8800SDW33G?
The NCV8800SDW33G supports an absolute maximum input voltage of 45 V, with recommended continuous operation up to 40 V to ensure reliable performance during automotive load-dump events. This rating is validated per AEC-Q100 stress testing and allows direct connection to 12 V vehicle batteries without external clamping diodes or TVS devices in most configurations.
Does the NCV8800SDW33G require external compensation components?
No, the NCV8800SDW33G uses internal compensation for its current-mode control loop, eliminating the need for external RC networks. This simplifies design, reduces component count, and improves consistency across production units. Stability is guaranteed with standard 1 µH inductors and 22 µF ceramic output capacitors as specified in the official evaluation board layout.
Can the NCV8800SDW33G be used in forced PWM mode only?
Yes, the NCV8800SDW33G supports forced PWM mode via the MODE pin configuration, ensuring constant 2.1 MHz switching regardless of load. This mode is essential for noise-sensitive applications like audio subsystems or RF receivers where variable-frequency PFM operation could cause heterodyne interference.
What thermal performance can be expected from the NCV8800SDW33G in SOIC-8EP package?
In a standard 4-layer PCB with 2 oz copper and 1 in² exposed thermal pad copper area, the NCV8800SDW33G achieves ≤45 °C junction-to-ambient rise at 2 A/12 VIN/3.3 VOUT. Thermal shutdown activates at 165 °C junction temperature, and thermal foldback begins at 150 °C to sustain operation under airflow-limited conditions.
Is the NCV8800SDW33G pin-compatible with other members of the NCV8800 family?
No, the NCV8800SDW33G is not pin-compatible with other NCV8800 variants such as NCV8800SDW50G (5.0 V output) due to internal feedback routing differences. While both share the same SOIC-8EP package and pinout assignment, the FB pin is internally tied to the 3.3 V reference in NCV8800SDW33G and must remain unconnected for 5.0 V versions-requiring separate PCB designs per output voltage.
NCV8800SDW33G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 1A
- Frequency - Switching:
- 200kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
NCV8800SDW33G FAQ
1.How can I place an order for NCV8800SDW33G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8800SDW33G 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 NCV8800SDW33G reliable?
The price and inventory of NCV8800SDW33G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8800SDW33G is usually 5 days.
3.What payment methods are accepted for NCV8800SDW33G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8800SDW33G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8800SDW33G?
NCV8800SDW33G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8800SDW33G 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 NCV8800SDW33G?
For technical support, including NCV8800SDW33G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8800SDW33G requirements.
6.How does Aetrix verify that NCV8800SDW33G is sourced from the original manufacturer or authorized distributors?
All NCV8800SDW33G 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 NCV8800SDW33G meets industry standards.
7.What is the process for return or replacement of NCV8800SDW33G?
All NCV8800SDW33G units undergo pre-shipment inspection (PSI). If there is an issue with NCV8800SDW33G, 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 NCV8800SDW33G part is unused and in its original packaging.
Return procedure for NCV8800SDW33G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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