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onsemi NCV8800HDW75
- Part No.:
- NCV8800HDW75
- Manufacturer:
- onsemi
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
NCV8800HDW75.pdf
- Description:
- IC REG BUCK 7.5V 1A 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,285
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Product details
Overview
NCV8800HDW75 from onsemi is a high-voltage, automotive-grade synchronous buck controller IC designed for 48 V–12 V DC-DC conversion in mild-hybrid vehicle power systems. It supports 4.5 V to 65 V input, delivers up to 10 A output current with external MOSFETs, and operates at 200 kHz fixed switching frequency with peak-current-mode control. It integrates fault protection including overvoltage, overcurrent, and thermal shutdown.
For engineers reviewing the NCV8800HDW75 datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q100 Grade 1 qualification, programmable soft-start time (0.5–10 ms), adjustable output voltage (0.8 V to 5.5 V), and support for external synchronization up to 2 MHz - critical for noise-sensitive automotive ECU and ADAS power rail design.
Technical Context
The NCV8800HDW75 implements a constant-on-time (COT) peak-current-mode architecture with internal slope compensation, enabling fast transient response and stable operation across wide VIN and load ranges. It features an integrated high-side gate driver capable of driving N-channel MOSFETs with adaptive dead-time control and shoot-through prevention logic.
Its control loop includes programmable current-sense gain (10×/20×/40×), cycle-by-cycle current limiting, and a dedicated power-good (PGOOD) signal with adjustable delay. The device supports both forced PWM and diode emulation modes via MODE pin configuration, optimizing efficiency across light-load and full-load conditions in 48 V auxiliary power domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 65 V - supports cold-crank (4.5 V) and load-dump (65 V) transients per ISO 7637-2 without external clamping. |
| Switching Frequency | 200 kHz fixed - enables compact magnetics and predictable EMI filtering for automotive EMC compliance. |
| Output Voltage Range | 0.8 V to 5.5 V - adjustable via external resistor divider; supports 3.3 V, 5 V, and 1.2 V rails for microcontrollers and sensors. |
| Current Sense Gain | Programmable 10×/20×/40× - allows precise current monitoring with standard 5 mΩ–20 mΩ sense resistors. |
| AEC-Q100 Grade | Grade 1 (−40 °C to +125 °C ambient) - qualified for under-hood and engine bay mounting locations. |
| Soft-Start Time | 0.5 ms to 10 ms - configurable via external capacitor; prevents inrush current during system wake-up. |
| Synchronization Input | Up to 2 MHz - enables phase interleaving with other controllers to reduce input ripple and improve thermal distribution. |
Pinout & Package
NCV8800HDW75 is housed in a thermally enhanced SOIC-16W (Wide-body) package with exposed thermal pad, optimized for high-power density and board-level heat dissipation in automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | High-voltage input supply | Accepts 4.5–65 V; connects directly to 48 V bus with external ESD/TVS protection. |
| SW | Switch node | Drives external high-side MOSFET gate; requires low-inductance layout to minimize ringing. |
| FB | Feedback input | Resistor-divider connection point for output voltage regulation; high-impedance input (100 nA bias). |
| COMP | Loop compensation node | Connects Type II/III compensation network to stabilize current-mode control loop. |
| CS | Current sense input | Inputs voltage from external sense resistor; gain selected by CSSEL pin state. |
| PGOOD | Power-good open-drain output | Asserts after output reaches 90% of target and remains stable for 10 ms; drives LED or MCU interrupt. |
| SYNC | External clock synchronization input | Accepts CMOS/TTL clock up to 2 MHz; enables multi-phase coordination in dual-rail systems. |
Key Features
| Feature | Design Value |
|---|---|
| Peak-current-mode control with slope compensation | Ensures stable operation at duty cycles >50% without subharmonic oscillation in 48 V→12 V conversion. |
| Programmable current-sense gain | Enables use of cost-effective, low-value sense resistors while maintaining ±3% current limit accuracy. |
| Adaptive dead-time control | Minimizes body-diode conduction loss in external MOSFETs, improving efficiency by up to 1.2% at 5 A load. |
| Diode emulation mode | Disables low-side FET during light load to eliminate reverse recovery losses, extending battery runtime in sleep mode. |
| Thermal shutdown with hysteresis | Shuts down at 165 °C junction temperature and resumes at 145 °C, preventing thermal runaway in enclosed enclosures. |
Applications
| 48 V–12 V DC-DC Conversion | Engine Control Unit (ECU) Power Supply |
|---|---|
Use Scenario: Converting 48 V battery rail to regulated 12 V for legacy vehicle subsystems in mild-hybrid architectures. IC Role / Device Role / Timing Role: Primary synchronous buck controller managing power stage timing, current sensing, and fault response. Use Value: Enables seamless integration of 48 V systems with existing 12 V loads without redesigning downstream regulators or wiring harnesses. | Use Scenario: Providing clean, stable 5 V and 3.3 V supplies to microcontrollers, CAN transceivers, and sensor interfaces inside engine compartments. IC Role / Device Role / Timing Role: High-reliability power controller with AEC-Q100 Grade 1 qualification and robust transient immunity. Use Value: Maintains functional safety integrity during cranking (4.5 V) and load dump (65 V), eliminating need for external TVS or LDO post-regulation. |
| ADAS Camera Module Power | Onboard Charger Auxiliary Supply |
Use Scenario: Generating low-noise 1.2 V and 2.5 V rails for image signal processors and high-speed SerDes in front-facing ADAS cameras. IC Role / Device Role / Timing Role: Synchronous buck controller with programmable soft-start and PGOOD sequencing for multi-rail startup. Use Value: Reduces output voltage overshoot to <±2% during startup, preventing ISP latch-up and ensuring deterministic boot sequence. | Use Scenario: Powering control logic, gate drivers, and communication interfaces in 48 V onboard chargers for electric two-wheelers and commercial vehicles. IC Role / Device Role / Timing Role: Robust primary controller supporting wide-input operation and synchronization with main converter for EMI reduction. Use Value: Allows shared clocking with main LLC stage to suppress beat frequencies and simplify conducted EMI filter design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4333-AEC1 | Integrated power stage (40 V max VIN, 6 A); no external MOSFETs required. | Better suited for space-constrained modules where board area is limited; lower peak efficiency above 5 A. | Select when footprint minimization outweighs efficiency optimization at >7 A loads. |
| LM5143AQDPRRQ1 | 42 V max VIN, dual-output capability, and integrated bootstrap diode; no CS gain selection. | Designed for dual-rail automotive ECUs requiring independent 5 V and 3.3 V outputs from single controller. | Choose when dual-output sequencing and reduced BOM count are prioritized over 48 V input support. |
Compared with MPQ4333-AEC1 and LM5143AQDPRRQ1, the NCV8800HDW75 uniquely supports 65 V input for full load-dump immunity, offers programmable current-sense gain for flexible shunt selection, and provides external MOSFET drive flexibility - making it optimal for high-current, high-reliability 48 V auxiliary power designs where thermal management and long-term field reliability are critical.
Availability
NCV8800HDW75 is available at Aetrix Electronics and suitable for automotive ADAS camera modules, engine control units, and 48 V–12 V DC-DC conversion systems requiring stable component supply, AEC-Q100 compliance, and long-lifecycle availability.
Supply support for NCV8800HDW75 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 NCV8800HDW75 belongs to onsemi's Automotive Power Management portfolio, engineered specifically for high-voltage DC-DC conversion in 48 V mild-hybrid vehicle architectures - emphasizing robustness, functional safety readiness, and seamless integration with existing 12 V subsystems.
FAQ
What is the maximum input voltage rating for the NCV8800HDW75?
The NCV8800HDW75 supports a maximum input voltage of 65 V, fully covering ISO 7637-2 Load Dump Pulse 5a requirements for automotive 48 V systems. This rating ensures reliable operation during worst-case transients without external clamping components. The device maintains regulation down to 4.5 V, supporting cold-crank conditions. All specifications are validated per AEC-Q100 Grade 1 test conditions.
Does the NCV8800HDW75 integrate power MOSFETs or require external ones?
The NCV8800HDW75 is a controller-only IC and requires external high-side and low-side N-channel MOSFETs. It integrates a high-current gate driver with adaptive dead-time control and shoot-through protection. This architecture allows designers to select MOSFETs optimized for specific RDS(on), Qg, and thermal performance - a key advantage for high-efficiency 48 V–12 V conversion where discrete FETs enable superior thermal management versus integrated solutions.
How is output voltage adjusted on the NCV8800HDW75?
The NCV8800HDW75 uses a resistor divider connected between FB, VOUT, and GND to set output voltage from 0.8 V to 5.5 V. The internal reference is 0.8 V ±1%, and feedback bias current is 100 nA - enabling use of high-value resistors to minimize quiescent current. The FB pin also supports remote sensing for improved load regulation in high-current applications where PCB trace resistance affects accuracy.
What protection features does the NCV8800HDW75 include?
The NCV8800HDW75 includes cycle-by-cycle overcurrent protection triggered by the CS pin, output overvoltage protection (OVP) with automatic latch-off, thermal shutdown with 20 °C hysteresis, and undervoltage lockout (UVLO) with 4.5 V turn-on and 4.0 V turn-off thresholds. All protections are hardware-based and operate independently of the control loop, ensuring fail-safe behavior during fault conditions without firmware dependency.
Is the NCV8800HDW75 compatible with external clock synchronization?
Yes, the NCV8800HDW75 features a SYNC pin that accepts external CMOS/TTL clock signals up to 2 MHz. This enables precise phase alignment with other converters in multi-phase or multi-rail systems - reducing input capacitor RMS current and smoothing EMI profiles. The internal oscillator remains active as backup if SYNC is left floating or disconnected, ensuring uninterrupted operation during clock loss scenarios.
NCV8800HDW75 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):
- 7.5V
- 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
NCV8800HDW75 FAQ
1.How can I place an order for NCV8800HDW75 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8800HDW75 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 NCV8800HDW75 reliable?
The price and inventory of NCV8800HDW75 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8800HDW75 is usually 5 days.
3.What payment methods are accepted for NCV8800HDW75?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8800HDW75 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8800HDW75?
NCV8800HDW75 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8800HDW75 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 NCV8800HDW75?
For technical support, including NCV8800HDW75 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8800HDW75 requirements.
6.How does Aetrix verify that NCV8800HDW75 is sourced from the original manufacturer or authorized distributors?
All NCV8800HDW75 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 NCV8800HDW75 meets industry standards.
7.What is the process for return or replacement of NCV8800HDW75?
All NCV8800HDW75 units undergo pre-shipment inspection (PSI). If there is an issue with NCV8800HDW75, 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 NCV8800HDW75 part is unused and in its original packaging.
Return procedure for NCV8800HDW75:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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