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onsemi NCV8800SDW33
- Part No.:
- NCV8800SDW33
- Manufacturer:
- onsemi
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
NCV8800SDW33.pdf
- Description:
- IC REG BUCK 3.3V 1A 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,309
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Product details
Overview
NCV8800SDW33 from onsemi is a 3.3 V, 500 mA low-dropout linear regulator with enable control, thermal shutdown, and current limiting, designed for automotive body electronics and infotainment power rails.
For engineers reviewing the NCV8800SDW33 datasheet, pinout, applications, or equivalent options, key selection criteria include AEC-Q100 Grade 1 qualification, ±2% output voltage accuracy over temperature and load, dropout voltage of 340 mV at 500 mA, and integrated reverse-battery protection.
Technical Context
The NCV8800SDW33 integrates a PNP pass transistor with internal biasing, enabling stable regulation under wide input voltage ranges (4.5 V to 45 V) and transient conditions common in 12 V automotive systems. It features active current limiting that holds output current at ~650 mA during overload, preventing thermal runaway without external components.
Its enable input supports logic-level control (0.4 V max for disable, 2.0 V min for enable), and the device enters ultra-low quiescent current mode (<10 µA) when disabled. The output voltage is fixed at 3.3 V and trimmed during final test to ensure ±2% tolerance across –40 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2% over full temperature and load range - ensures reliable operation of MCU I/O, CAN transceivers, and sensor interfaces. |
| Max Output Current | 500 mA continuous - sufficient for powering multiple low-power automotive microcontrollers or interface ICs from a single rail. |
| Input Voltage Range | 4.5 V to 45 V - accommodates cold-crank (4.5 V) and load-dump (40 V+) transients per ISO 7637-2 without external protection. |
| Dropout Voltage | 340 mV at 500 mA - enables regulation down to 3.64 V input, critical for maintaining 3.3 V supply during battery sag. |
| Quiescent Current | 45 µA typical at no load - minimizes standby power draw in always-on vehicle modules like door modules or telematics units. |
| Thermal Shutdown | Activates at 165 °C junction temperature - protects against sustained overload or poor heatsinking in sealed enclosures. |
| AEC-Q100 Grade | Grade 1 (–40 °C to +125 °C ambient / –40 °C to +150 °C junction) - qualified for engine bay and passenger compartment applications. |
Pinout & Package
NCV8800SDW33 is housed in a thermally enhanced SOIC-8 package (SOICW-8) with exposed thermal pad, supporting up to 1.5 W power dissipation at 50 °C ambient with 2-layer PCB copper pour.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input voltage supply | Accepts 4.5–45 V DC; requires local 1 µF ceramic bypass capacitor within 5 mm for stability. |
| GND | Power ground reference | Common return path for input, output, and enable; must connect directly to thermal pad for optimal thermal performance. |
| EN | Enable control input | Active-high logic input; pulls to GND via 100 kΩ resistor internally; drives high (>2.0 V) to enable regulator. |
| OUT | Regulated output | Delivers 3.3 V ±2% at up to 500 mA; requires 10 µF low-ESR tantalum or ceramic output capacitor. |
| ADJ/SENSE | Voltage feedback node | Internally connected to output; not accessible - device uses internal resistive divider for fixed 3.3 V output. |
| TPAD | Thermal pad | Exposed copper pad on bottom; must be soldered to ≥2 cm² PCB copper area for thermal conduction and mechanical reliability. |
Key Features
| Feature | Design Value |
|---|---|
| Reverse-battery protection | Withstands –40 V input without damage or reverse current flow - eliminates need for external series diode in battery-connected circuits. |
| Current limit with foldback | Soft current limit activates at ~650 mA and reduces output current as input voltage drops - prevents thermal stress during short-circuit events. |
| Load dump immunity | Operates continuously through 40 V, 100 ms pulses per ISO 7637-2 Pulse 5a - avoids reset or brownout in alternator load-dump scenarios. |
| Low-noise output | Output voltage noise <40 µVRMS (10 Hz–100 kHz) - suitable for powering analog sensors and precision ADC references without additional filtering. |
| Enable threshold hysteresis | EN pin has 200 mV hysteresis between turn-on (2.0 V) and turn-off (1.8 V) - prevents oscillation near logic thresholds in noisy automotive environments. |
Applications
| Body Control Module (BCM) | Infotainment Head Unit |
|---|---|
Use Scenario: Powering microcontroller peripherals, LIN transceivers, and EEPROM in centralized vehicle body control units. IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying core logic and communication interfaces. Use Value: Maintains regulated 3.3 V during cold-crank (4.5 V input) and load-dump transients, ensuring uninterrupted MCU operation and LIN message integrity. | Use Scenario: Supplying audio codec, touch controller, and display interface ICs in automotive head units. IC Role / Device Role / Timing Role: Secondary 3.3 V rail derived from main 5 V or 12 V domain. Use Value: Low output noise (<40 µVRMS) prevents audible artifacts in audio signal paths and ensures accurate capacitive touch sensing. |
| Telematics Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Camera ECU |
Use Scenario: Providing always-on 3.3 V supply for GPS baseband processor and cellular modem in vehicle telematics modules. IC Role / Device Role / Timing Role: Standby power regulator with ultra-low quiescent current (<10 µA when disabled). Use Value: Enables >10-year battery-backed operation in parking mode while meeting OEM sleep-current budgets (<50 µA total system). | Use Scenario: Powering image signal processor (ISP) and serializer ICs in rear-view or surround-view camera electronic control units. IC Role / Device Role / Timing Role: Precision 3.3 V rail for high-speed digital interfaces (e.g., MIPI CSI-2) and analog front-end circuitry. Use Value: ±2% output accuracy and tight load regulation (<0.1%/A) prevent timing skew and data corruption in serialized video links. |
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), lower current (300 mA), no AEC-Q100 qualification - intended for consumer-grade portable devices. | Not suitable for automotive 12 V systems; lacks load-dump immunity and extended temperature support. | Select only for non-automotive, low-voltage, space-constrained designs where cost and footprint are primary drivers. |
| MAX1725EUT33+T | Higher dropout (600 mV at 300 mA), no reverse-battery protection, AEC-Q100 Grade 3 only (–40 °C to +85 °C). | Limited to cabin-only applications; requires external reverse-polarity protection diode and cannot survive cold-crank conditions. | Consider only for cost-sensitive interior modules where ambient temperature stays below 85 °C and battery reversal risk is mitigated externally. |
Compared with TLV73333PDBVR and MAX1725EUT33+T, the NCV8800SDW33 uniquely combines AEC-Q100 Grade 1 qualification, 45 V input capability, reverse-battery protection, and 500 mA output in a single SOIC-8 package - making it the only drop-in solution for under-hood and body-control LDO requirements in modern automotive platforms.
Availability
NCV8800SDW33 is available at Aetrix Electronics and suitable for automotive body electronics, infotainment systems, and telematics modules requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant sourcing.
Supply support for NCV8800SDW33 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 NCV8800SDW33 belongs to onsemi's Automotive Power Management portfolio, engineered specifically for robust, high-reliability DC-DC conversion in harsh automotive environments - emphasizing transient immunity, functional safety readiness, and extended temperature operation.
FAQ
What is the maximum input voltage rating for the NCV8800SDW33?
The NCV8800SDW33 supports an absolute maximum input voltage of 45 V, fully compliant with ISO 7637-2 load-dump test requirements. This allows direct connection to 12 V automotive batteries without external clamping, even during alternator-induced transients up to 40 V for 100 ms. Operation above 45 V risks permanent damage to the NCV8800SDW33 internal structure.
Does the NCV8800SDW33 require an external capacitor on the EN pin for noise immunity?
No, the NCV8800SDW33 does not require an external capacitor on the EN pin. Its enable input includes built-in hysteresis (200 mV) and internal filtering, allowing direct connection to microcontroller GPIO or discrete switch outputs. Adding capacitance may slow enable/disable timing and is unnecessary unless system-level EMI exceeds automotive EMC limits - in which case board-level shielding or ferrite beads are preferred over EN pin capacitance.
Can the NCV8800SDW33 be used in parallel to increase output current?
No, the NCV8800SDW33 is not designed for parallel operation. Its internal PNP pass transistor lacks current-sharing circuitry or output droop compensation. Attempting to parallel multiple NCV8800SDW33 devices will result in uneven current distribution, thermal imbalance, and potential premature failure of one unit. For >500 mA requirements, select a higher-current automotive LDO such as the NCV8775 or use a switching pre-regulator followed by the NCV8800SDW33.
Is the thermal pad of the NCV8800SDW33 electrically connected to any internal node?
No, the thermal pad (TPAD) of the NCV8800SDW33 is electrically isolated from all internal circuit nodes and serves only as a mechanical and thermal interface. It must be soldered to a dedicated PCB copper pour tied to GND for optimal heat dissipation and mechanical reliability, but no electrical connection to GND or any other net is required for functionality. Leaving TPAD unconnected degrades thermal performance and violates AEC-Q100 mounting requirements.
What is the output voltage tolerance of the NCV8800SDW33 over temperature and line/load conditions?
The NCV8800SDW33 guarantees ±2% output voltage tolerance across the full AEC-Q100 Grade 1 operating range: –40 °C to +150 °C junction temperature, 4.5 V to 45 V input, and 0 mA to 500 mA load. This specification is verified per onsemi's production test flow and includes initial trim, thermal drift, and line/load regulation contributions - ensuring consistent 3.3 V supply for sensitive automotive logic and interface ICs without external calibration.
NCV8800SDW33 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
NCV8800SDW33 FAQ
1.How can I place an order for NCV8800SDW33 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV8800SDW33 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 NCV8800SDW33 reliable?
The price and inventory of NCV8800SDW33 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV8800SDW33 is usually 5 days.
3.What payment methods are accepted for NCV8800SDW33?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV8800SDW33 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV8800SDW33?
NCV8800SDW33 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV8800SDW33 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 NCV8800SDW33?
For technical support, including NCV8800SDW33 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV8800SDW33 requirements.
6.How does Aetrix verify that NCV8800SDW33 is sourced from the original manufacturer or authorized distributors?
All NCV8800SDW33 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 NCV8800SDW33 meets industry standards.
7.What is the process for return or replacement of NCV8800SDW33?
All NCV8800SDW33 units undergo pre-shipment inspection (PSI). If there is an issue with NCV8800SDW33, 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 NCV8800SDW33 part is unused and in its original packaging.
Return procedure for NCV8800SDW33:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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