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onsemi NCV33269DTRK-3.3
- Part No.:
- NCV33269DTRK-3.3
- Manufacturer:
- onsemi
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
NCV33269DTRK-3.3.pdf
- Description:
- IC REG LINEAR 3.3V 800MA DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:4,036
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Product details
Overview
NCV33269DTRK-3.3 from onsemi is an automotive-grade, fixed-output low-dropout linear voltage regulator delivering 3.3 V at up to 800 mA with 1.0 V dropout at 500 mA, ±1% output tolerance, and integrated thermal shutdown and short-circuit protection. It is designed for power-sensitive embedded control modules in engine management, body electronics, and ADAS sensor interfaces where input voltage may dip near the regulated output.
For engineers reviewing the NCV33269DTRK-3.3 datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q100 qualification, DPAK package thermal performance (θJC = 6.0°C/W), 125°C ambient operation, and compatibility with 10 µF minimum output capacitance for stability.
Technical Context
The NCV33269DTRK-3.3 uses a composite PNP–NPN pass transistor architecture enabling low dropout while maintaining high current capability. Its internal reference is trimmed to 1.25 V with ±1% accuracy over line, load, and temperature (−40°C to +125°C).
It integrates foldback current limiting and thermal shutdown triggered at ~170°C junction temperature without hysteresis. The device requires no external components for basic operation but mandates a ≥10 µF output capacitor with ESR between 0.2 Ω and 10 Ω for stability across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±1% (1.25 V reference-based, trimmed at production) |
| Max Output Current | 800 mA continuous - supports microcontroller cores, CAN transceivers, and sensor signal chains |
| Dropout Voltage | 1.0 V at 500 mA - enables operation with Vin as low as 4.3 V for 3.3 V rail |
| Line Regulation | 0.3% - maintains stable output despite input ripple or battery sag |
| Ripple Rejection | 55 dB at 120 Hz - suppresses low-frequency noise from switching supplies or alternators |
| Quiescent Current | 5.5 mA (typ.) - minimizes standby power loss in always-on vehicle modules |
| Operating Ambient Range | −40°C to +125°C - meets automotive under-hood and cabin environmental requirements |
Pinout & Package
DPAK (TO-252-3) package with exposed heatsink tab electrically connected to Pin 2 (VOUT). Compact 6.10 mm × 6.54 mm footprint optimized for thermal conduction via PCB copper pour.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND / Adj | Ground reference for regulation; not adjustable on fixed-output NCV33269DTRK-3.3 |
| 2 | VOUT | Regulated 3.3 V output; tied to heatsink tab for thermal path and electrical connection |
| 3 | VIN | Input supply (up to 20 V); must exceed VOUT by ≥1.0 V for regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Grade 1 (−40°C to +125°C) with PPAP capability - certified for automotive safety-critical subsystems |
| Thermal Shutdown | Activates at ~170°C junction; output disables without hysteresis to prevent catastrophic failure |
| Short-Circuit Protection | Foldback current limiting - reduces power dissipation during sustained overload or output fault |
| Pb-Free Construction | RoHS-compliant DPAK package with G-suffix marking - suitable for modern automotive manufacturing |
| Low Dropout Architecture | Composite PNP–NPN pass element - achieves 1.0 V dropout while sustaining 800 mA output |
Applications
| Engine Control Unit (ECU) Power Supply | Automotive Camera Module Bias Rail |
|---|---|
Use Scenario: Powers 32-bit MCU, CAN controller, and analog front-end in gasoline/diesel ECU under wide battery voltage range (6–16 V) and high ambient temperature. IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying core logic and interface peripherals; operates in dropout during cranking (≤6.5 V battery). Use Value: 1.0 V dropout ensures uninterrupted operation down to 4.3 V input; AEC-Q100 Grade 1 rating guarantees reliability at 125°C ambient. |
Use Scenario: Supplies image sensor, ISP, and serializer in rear-view or surround-view camera module mounted near exhaust or wheel well. IC Role / Device Role / Timing Role: Clean, low-noise 3.3 V bias rail decoupled from noisy 12 V vehicle bus; rejects alternator ripple and ignition noise. Use Value: 55 dB ripple rejection at 120 Hz suppresses low-frequency noise; thermal shutdown prevents latch-up during thermal stress events. |
| Body Control Module (BCM) I/O Interface | ADAS Radar Signal Conditioning |
Use Scenario: Powers GPIO expander, LIN transceiver, and EEPROM in door module exposed to humidity, vibration, and repeated thermal cycling. IC Role / Device Role / Timing Role: Fixed 3.3 V regulator for digital I/O and communication ICs; handles load transients from solenoid drivers and LED drivers. Use Value: 800 mA output headroom accommodates peak loads; ±1% tolerance ensures accurate ADC reference and logic-level compatibility. |
Use Scenario: Provides stable 3.3 V supply to RF front-end bias circuits and baseband ADCs in 77 GHz radar ECU operating in engine bay. IC Role / Device Role / Timing Role: Low-noise, thermally robust LDO for analog signal chain; placed adjacent to RF section with minimal trace length. Use Value: DPAK's 6.0°C/W θJC enables direct heatsinking to ground plane; low quiescent current (<6 mA) reduces self-heating in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73333PDBVR | 300 mA max output, 170 mV dropout, SOT-23-5 package, 2.5 µA IQ | Lower current, lower dropout, smaller footprint - suited for space-constrained infotainment peripherals | Select when <300 mA load and ultra-low IQ are prioritized over automotive qualification and thermal robustness |
| TPS7B8733QKVURQ1 | 500 mA max output, 300 mV dropout, wettable flank QFN, AEC-Q100 Grade 0 (−40°C to +150°C) | Higher temp grade, lower dropout, but lower current and higher cost - used in high-reliability power domains | Select when junction temperature exceeds 150°C or sub-300 mV dropout is required for ultra-low VIN systems |
Compared with TLV73333PDBVR and TPS7B8733QKVURQ1, the NCV33269DTRK-3.3 delivers the highest continuous output current (800 mA) in an automotive-qualified DPAK package, making it optimal for thermally demanding, medium-power ECU rails where cost, ruggedness, and proven field reliability outweigh ultra-low IQ or minimal dropout needs.
Availability
NCV33269DTRK-3.3 is available at Aetrix Electronics and suitable for automotive engine control units, ADAS camera modules, and body electronics requiring stable component supply with full AEC-Q100 compliance and long-term lifecycle support.
Supply support for NCV33269DTRK-3.3 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 (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.
The NCV33269 series belongs to onsemi's automotive-qualified linear regulator product line, engineered specifically for under-hood and chassis-mounted electronic control units requiring high reliability, thermal resilience, and AEC-Q100 certification.
FAQ
What is the maximum input voltage rating for the NCV33269DTRK-3.3?
The NCV33269DTRK-3.3 has an absolute maximum input voltage of 20 V, as specified in the Maximum Ratings table. Operation above this voltage risks permanent damage. For reliable 3.3 V regulation, input must remain ≥4.3 V (3.3 V + 1.0 V dropout) across all load and temperature conditions. Derating is recommended for long-term reliability in high-temperature environments.
Does the NCV33269DTRK-3.3 require an external output capacitor, and what are the specifications?
Yes, the NCV33269DTRK-3.3 requires an external output capacitor for stability. The datasheet specifies a minimum of 10 µF with ESR between 0.2 Ω and 10 Ω over the full operating temperature range. Solid tantalum capacitors are preferred for stable ESR vs. temperature; ceramic capacitors below 10 µF or with very low ESR may cause oscillation and are not recommended without validation.
Is the NCV33269DTRK-3.3 pin-compatible with the standard MC33269DTRK-3.3?
No - the NCV33269DTRK-3.3 is not pin-compatible with the commercial-grade MC33269DTRK-3.3 in terms of qualification and thermal behavior, though both share identical pinout and electrical function. The NCV prefix denotes automotive-specific process controls, AEC-Q100 qualification, and extended temperature screening; PCB layout may be reused, but qualification documentation and test reports differ.
What thermal performance can be expected from the NCV33269DTRK-3.3 in a typical DPAK PCB layout?
In a standard 2-layer PCB with 2 oz. copper and a 25 mm² thermal pad connected to Pin 2 (VOUT/heatsink), the NCV33269DTRK-3.3 achieves θJA ≈ 45°C/W. At 800 mA load and 1.2 V dropout (0.96 W dissipation), junction temperature rise is ~43°C above ambient - well within the 150°C max TJ limit even at 125°C ambient, assuming adequate copper area.
How does the thermal shutdown mechanism behave in the NCV33269DTRK-3.3 during sustained overload?
The NCV33269DTRK-3.3 thermal shutdown activates at approximately 170°C junction temperature and disables the output with no hysteresis. During sustained overload, this causes visible output oscillation - the device cycles between regulation and shutdown. This is intentional to prevent destructive overheating; it is not a fault mode but a protective feature requiring proper heatsinking or derating in the final design.
NCV33269DTRK-3.3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 20V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.35V @ 800mA
- Current - Output:
- 800mA
- Current - Quiescent (Iq):
- 8 mA
- Current - Supply (Max):
- -
- PSRR:
- 55dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
NCV33269DTRK-3.3 FAQ
1.How can I place an order for NCV33269DTRK-3.3 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV33269DTRK-3.3 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 NCV33269DTRK-3.3 reliable?
The price and inventory of NCV33269DTRK-3.3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV33269DTRK-3.3 is usually 5 days.
3.What payment methods are accepted for NCV33269DTRK-3.3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV33269DTRK-3.3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV33269DTRK-3.3?
NCV33269DTRK-3.3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV33269DTRK-3.3 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 NCV33269DTRK-3.3?
For technical support, including NCV33269DTRK-3.3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV33269DTRK-3.3 requirements.
6.How does Aetrix verify that NCV33269DTRK-3.3 is sourced from the original manufacturer or authorized distributors?
All NCV33269DTRK-3.3 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 NCV33269DTRK-3.3 meets industry standards.
7.What is the process for return or replacement of NCV33269DTRK-3.3?
All NCV33269DTRK-3.3 units undergo pre-shipment inspection (PSI). If there is an issue with NCV33269DTRK-3.3, 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 NCV33269DTRK-3.3 part is unused and in its original packaging.
Return procedure for NCV33269DTRK-3.3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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