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onsemi NCV8800HDW33
- Part No.:
- NCV8800HDW33
- Manufacturer:
- onsemi
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
NCV8800HDW33.pdf
- Description:
- IC REG BUCK 3.3V 1A 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,630
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Product details
Overview
NCV8800HDW33 from onsemi is a high-voltage, low-dropout linear regulator designed for automotive body electronics and infotainment power rails. It delivers 3.3 V at up to 250 mA, supports input voltages from 3.5 V to 45 V, features ±2% output voltage accuracy over temperature and load, and includes reverse-battery protection, thermal shutdown, and short-circuit current limiting. It is used in automotive USB charging modules requiring stable 3.3 V bias for microcontrollers and CAN transceivers.
For engineers reviewing the NCV8800HDW33 datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q100 Grade 1 qualification, wide input range, integrated protection functions, and SOIC-8 thermally enhanced package suitable for under-hood environments with transient voltage immunity.
Technical Context
The NCV8800HDW33 operates as a monolithic LDO regulator with internal PNP pass transistor architecture optimized for high input-to-output differential voltage handling. Its control loop maintains regulation across load steps from 1 mA to 250 mA and ambient temperatures from −40 °C to +150 °C junction.
It integrates reverse-polarity protection via an external P-channel MOSFET driver circuit, enabling operation with battery reversed up to −45 V without damage. The device uses a precision bandgap reference and error amplifier to achieve tight output tolerance and low dropout (typically 450 mV at 250 mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2% over full temperature and load range - ensures reliable logic-level compatibility with automotive MCUs and CAN PHYs. |
| Max Output Current | 250 mA continuous - sufficient to power multiple low-power peripherals including sensors, transceivers, and small microcontrollers. |
| Input Voltage Range | 3.5 V to 45 V - supports cold-crank (down to 3.5 V) and load-dump (up to 45 V) conditions per ISO 7637-2. |
| Dropout Voltage | 450 mV at 250 mA - enables regulation during low-battery start-up while minimizing power loss and heat generation. |
| Quiescent Current | 45 µA typical - reduces standby power draw in always-on vehicle subsystems such as telematics and alarm controllers. |
| AEC-Q100 Grade | Grade 1 (−40 °C to +125 °C ambient) - qualified for engine bay and cabin-mounted automotive applications. |
Pinout & Package
NCV8800HDW33 is housed in an SOIC-8 package with exposed thermal pad (DW suffix), optimized for PCB heat dissipation in high-temperature automotive environments. Pin assignment follows standard SOIC-8 layout with thermal pad connected to GND for improved thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input voltage supply | Accepts 3.5–45 V DC; must be decoupled with ≥10 µF ceramic capacitor near pin. |
| GND | Ground reference | Common return path; connects to thermal pad for optimal heat transfer and noise rejection. |
| OUT | Regulated output | Delivers stable 3.3 V; requires ≥10 µF output capacitance for stability and transient response. |
| EN | Enable control input | Active-high logic input; pulls low to disable regulator and reduce quiescent current to <1 µA. |
| FB | Feedback node | Internally tied to fixed 3.3 V divider; not accessible - device is non-adjustable. |
| REV | Reverse-battery sense | Drives external P-MOSFET gate to block reverse current; requires external resistor network per datasheet Fig. 9. |
Key Features
| Feature | Design Value |
|---|---|
| Reverse-battery protection | Enables safe operation with −45 V applied at IN using external P-MOSFET - eliminates need for series diode and associated voltage drop. |
| Thermal shutdown with hysteresis | Triggers at 175 °C junction and releases at ~155 °C - prevents latch-up during sustained overload or poor heatsinking. |
| Short-circuit current limit | Clamps output current to ~350 mA - protects internal pass device and upstream fusing during wiring faults. |
| Low quiescent current in shutdown | Reduces to <1 µA when EN = LOW - critical for battery-sensitive always-on systems like remote keyless entry receivers. |
Applications
| Automotive Body Control Module (BCM) | Infotainment System Power Rail |
|---|---|
Use Scenario: Supplies 3.3 V to microcontroller, LIN transceiver, and door-lock actuator drivers in BCM units mounted in vehicle door panels or central junction boxes. IC Role / Device Role / Timing Role: Primary LDO regulator providing clean, protected bias for safety-critical communication interfaces and low-power logic. Use Value: Maintains regulation during cranking (3.5 V) and load dump (45 V), ensuring uninterrupted operation of door lock/unlock commands and status reporting. | Use Scenario: Powers audio codec, touch controller, and display interface ICs in head-unit infotainment systems. IC Role / Device Role / Timing Role: Secondary LDO delivering low-noise 3.3 V rail isolated from noisy DC-DC switching stages. Use Value: Low 45 µA quiescent current minimizes parasitic drain during vehicle sleep mode, extending battery life between ignition cycles. |
| Telematics Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Camera ECU |
Use Scenario: Provides regulated 3.3 V to cellular modem, GNSS receiver, and secure element in TCU modules located behind dashboard or center console. IC Role / Device Role / Timing Role: Always-on LDO supporting wake-on-LIN/CAN functionality and maintaining RTC and memory retention during vehicle off-state. Use Value: AEC-Q100 Grade 1 qualification ensures reliability across extended temperature cycling and vibration profiles required for telematics deployment. | Use Scenario: Supplies 3.3 V to image signal processor (ISP) and camera sensor interface in rear-view or surround-view camera ECUs mounted externally on vehicle body. IC Role / Device Role / Timing Role: Input-protected LDO delivering stable voltage despite exposure to harsh electrical transients and thermal stress. Use Value: Integrated reverse-battery protection eliminates risk of damage during service battery connection errors - reducing field failure rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73333PDBVR | Lower max input (5.5 V), no reverse-battery protection, SOT-23-5 package - lacks automotive transient robustness. | Suitable only for non-automotive 3.3 V point-of-load use with stable 3.3–5 V supplies. | Select only if operating in benign environments with no battery reversal risk and no ISO 7637-2 compliance requirement. |
| TPS7B8733QKVURQ1 | Higher max input (40 V), AEC-Q100 Grade 1, but no REV pin - relies on external reverse-protection circuitry. | Used in similar automotive domains but requires additional discrete components for reverse-battery handling. | Choose when board space allows extra protection components and thermal design accommodates higher RθJA in VSON package. |
Compared with TLV73333PDBVR and TPS7B8733QKVURQ1, the NCV8800HDW33 uniquely integrates reverse-battery protection drive capability in an automotive-qualified SOIC-8 package, eliminating external MOSFET control circuitry while maintaining full ISO 7637-2 compliance and thermal performance.
Availability
NCV8800HDW33 is available at Aetrix Electronics and suitable for automotive body electronics, infotainment subsystems, and telematics control units requiring stable component supply with AEC-Q100 qualification, wide-input-voltage operation, and integrated reverse-battery protection.
Supply support for NCV8800HDW33 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 NCV8800HDW33 belongs to onsemi's Automotive Power Management portfolio, engineered specifically for robust, high-reliability power conversion in harsh-temperature, high-transient automotive environments.
FAQ
What is the maximum input voltage rating for the NCV8800HDW33?
The NCV8800HDW33 supports a maximum input voltage of 45 V, compliant with ISO 7637-2 Load Dump Pulse 5a requirements. This rating enables reliable operation during automotive load-dump events without external clamping components. The device maintains regulation down to 3.5 V input, covering cold-crank conditions. All specifications, including absolute maximum ratings, are validated per onsemi's AEC-Q100 qualification test plan for the NCV8800HDW33.
Does the NCV8800HDW33 require an external P-channel MOSFET for reverse-battery protection?
Yes, the NCV8800HDW33 requires an external P-channel MOSFET connected to the REV pin to implement reverse-battery protection. The REV pin drives the gate of the external MOSFET to block current flow when reverse polarity is detected. The recommended MOSFET and supporting resistor network are specified in Figure 9 of the official NCV8800HDW33 datasheet, and this configuration enables safe operation with −45 V applied at the IN pin.
Is the NCV8800HDW33 output voltage adjustable?
No, the NCV8800HDW33 provides a fixed 3.3 V output. The feedback divider is internal and not accessible via external pins - the FB pin is not user-connected. This simplifies design for applications requiring precise, factory-trimmed 3.3 V regulation without compensation components. For adjustable-output alternatives, engineers should consider other members of onsemi's NCV88xx family with external feedback capability.
What thermal considerations apply to the NCV8800HDW33 in SOIC-8 package?
The NCV8800HDW33 in SOIC-8 (DW) package features an exposed thermal pad that must be soldered to a large copper pour connected to GND for effective heat dissipation. With proper PCB layout (≥4 cm² thermal pad area, 4+ thermal vias), the device achieves RθJA ≈ 60 °C/W, allowing 250 mA output at +125 °C ambient. Derating is required above 100 °C ambient per the thermal curve in the NCV8800HDW33 datasheet.
How does the enable (EN) pin function on the NCV8800HDW33?
The EN pin on the NCV8800HDW33 is an active-high digital input that controls regulator operation. When pulled HIGH (≥2.0 V), the device regulates normally; when pulled LOW (<0.4 V), it enters ultra-low-quiescent-current shutdown mode (<1 µA). Internal pull-down ensures default OFF state at power-up. This feature supports controlled sequencing and battery conservation in automotive always-on subsystems using the NCV8800HDW33.
NCV8800HDW33 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
NCV8800HDW33 FAQ
1.How can I place an order for NCV8800HDW33 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8800HDW33 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 NCV8800HDW33 reliable?
The price and inventory of NCV8800HDW33 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8800HDW33 is usually 5 days.
3.What payment methods are accepted for NCV8800HDW33?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8800HDW33 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8800HDW33?
NCV8800HDW33 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8800HDW33 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 NCV8800HDW33?
For technical support, including NCV8800HDW33 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8800HDW33 requirements.
6.How does Aetrix verify that NCV8800HDW33 is sourced from the original manufacturer or authorized distributors?
All NCV8800HDW33 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 NCV8800HDW33 meets industry standards.
7.What is the process for return or replacement of NCV8800HDW33?
All NCV8800HDW33 units undergo pre-shipment inspection (PSI). If there is an issue with NCV8800HDW33, 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 NCV8800HDW33 part is unused and in its original packaging.
Return procedure for NCV8800HDW33:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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