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onsemi NCV33269DTRK-12G
- Part No.:
- NCV33269DTRK-12G
- Manufacturer:
- onsemi
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
NCV33269DTRK-12G.pdf
- Description:
- IC REG LINEAR 12V 800MA DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:1,523
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Product details
Overview
NCV33269DTRK-12G from onsemi is an automotive-grade, fixed-output 12 V low-dropout linear voltage regulator in DPAK (TO-252) package, delivering ≥800 mA output current with 1.0 V dropout at 500 mA and ±1% output voltage tolerance over −40°C to +125°C ambient. It integrates thermal shutdown and short-circuit protection, and is AEC-Q100 qualified for engine control units and body electronics.
For engineers reviewing the NCV33269DTRK-12G datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, automotive-qualified alternatives, and supply-chain support details specific to this exact part number.
Technical Context
The NCV33269DTRK-12G uses a composite PNP–NPN pass transistor architecture enabling stable regulation with only 1.0 V input-to-output differential at 500 mA load. Its internal reference is trimmed to 1.25 V with ±1% accuracy across line, load, and temperature, supporting precise 12 V output under varying input conditions (Vin ≤ 20 V, Vin − Vout ≤ 8.0 V).
Thermal protection activates at ~170°C junction temperature without hysteresis, causing output disablement to prevent catastrophic failure. Current limiting is internally set to 800 mA minimum, and quiescent current remains ≤8.0 mA at 12 V output-critical for always-on automotive subsystems requiring low standby power.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 12.0 V ±1% (3.23–12.24 V over full temp/load range), enabling direct replacement of legacy 12 V LDOs without recalibration. |
| Dropout Voltage | 1.0 V @ 500 mA (max 1.35 V @ 800 mA), allowing operation from 13.0–13.35 V input in 12 V battery systems during cold cranking. |
| Output Current | ≥800 mA continuous, sufficient to power microcontrollers, CAN transceivers, and sensor signal chains in automotive ECUs. |
| Ripple Rejection | 55 dB @ 120 Hz, suppressing alternator ripple and EMI in noisy vehicle electrical environments. |
| Operating Temp | −40°C to +125°C ambient, meeting AEC-Q100 Grade 1 requirements for under-hood deployment. |
| Quiescent Current | ≤8.0 mA @ 12 V output, minimizing parasitic drain in ignition-off states for battery-sensitive modules. |
| Protection | Thermal shutdown (no hysteresis) and short-circuit current limiting, eliminating need for external fault-handling circuitry. |
Pinout & Package
DPAK (TO-252-3) package with exposed heatsink tab electrically connected to Pin 2 (VOUT). Compact 6.10 × 6.54 mm footprint supports high-power density PCB layouts in space-constrained automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal error amplifier and thermal sensor; must be low-impedance connection to minimize noise coupling. |
| 2 | VOUT | Regulated 12 V output; heatsink tab is internally bonded to this pin-requires thermal pad connection to PCB copper pour. |
| 3 | VIN | Input supply (≤20 V); requires ≥0.33 µF bypass capacitor placed adjacent to pin to suppress HF noise and improve transient response. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Grade 1 (−40°C to +125°C) qualification with PPAP capability-enables direct use in production automotive ECUs without requalification. |
| 1.0 V Dropout | Enables >90% efficiency at 12 V output when input is 13.0 V, critical for maintaining regulation during low-battery cranking events. |
| ±1% Output Tolerance | Eliminates need for post-manufacturing trimming or feedback resistor calibration in 12 V rail designs. |
| Internal Thermal Shutdown | Protects against solder reflow damage and sustained overload without external thermal sensors or shutdown logic. |
| Pb-Free & RoHS Compliant | DPAK package meets automotive ELV and global environmental compliance mandates without lead-based solder compatibility concerns. |
Applications
| Engine Control Unit (ECU) Power Rail | Body Control Module (BCM) Sensor Supply |
|---|---|
Use Scenario: Powers 32-bit MCU, CAN FD transceiver, and analog front-end in gasoline/diesel engine ECU housed near exhaust manifold. IC Role / Device Role / Timing Role: Primary 12 V LDO supplying regulated bias to safety-critical digital and analog subsystems. Use Value: 1.0 V dropout ensures uninterrupted operation during 13.0 V cold-crank transients; AEC-Q100 Grade 1 rating guarantees reliability at 125°C ambient. |
Use Scenario: Supplies 12 V to door lock actuators, window motor drivers, and interior lighting controllers in BCM. IC Role / Device Role / Timing Role: Fixed-output LDO providing stable voltage to multiple load-switched peripherals. Use Value: 800 mA output current drives multiple solenoids simultaneously; thermal shutdown prevents latch-up during actuator stall conditions. |
| Advanced Driver Assistance Systems (ADAS) Camera Module | Infotainment System USB Hub Regulator |
Use Scenario: Powers image sensor, ISP, and MIPI serializer in rear-view camera module mounted in hot trunk environment. IC Role / Device Role / Timing Role: Local 12 V regulator decoupling main domain controller supply to reduce noise coupling into analog video path. Use Value: 55 dB ripple rejection attenuates alternator noise that would otherwise manifest as horizontal banding in video output. |
Use Scenario: Provides clean 12 V to USB Type-C PD sink controller and port power switches in head unit. IC Role / Device Role / Timing Role: Secondary LDO isolating USB power domain from noisy main 12 V bus. Use Value: ≤8.0 mA quiescent current minimizes battery drain during vehicle sleep mode while maintaining USB enumeration readiness. |
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 |
|---|---|---|---|
| TLV1117-12CDR | SO-8 package, 800 mA output, 1.2 V dropout @ 800 mA, no AEC-Q100 qualification. | Targeted at industrial/commercial systems-not certified for automotive under-hood use. | Select only for non-automotive designs where AEC-Q100 is not required and SO-8 footprint is preferred. |
| TPS7B8750QKVURQ1 | DPAK package, 500 mA output, 350 mV dropout @ 100 mA, AEC-Q100 Grade 0 (−40°C to +150°C). | Lower current capacity and tighter dropout optimized for ultra-low-power domains-not suitable for 800 mA loads. | Choose when <500 mA load and sub-1 V dropout are prioritized over output current; verify thermal margin at full load. |
Compared with TLV1117-12CDR and TPS7B8750QKVURQ1, the NCV33269DTRK-12G uniquely balances automotive qualification, 800 mA drive, and 1.0 V dropout in DPAK-making it the only drop-in solution for AEC-Q100-compliant 12 V ECU rails requiring ≥800 mA.
Availability
NCV33269DTRK-12G is available at Aetrix Electronics and suitable for engine control units, body control modules, and ADAS camera modules requiring stable component supply with automotive-grade traceability and lifecycle continuity.
Supply support for NCV33269DTRK-12G 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, designed specifically for under-hood and chassis-mounted electronic control units demanding AEC-Q100 compliance, robust thermal performance, and high-reliability voltage regulation.
FAQ
What is the maximum input voltage for NCV33269DTRK-12G?
The NCV33269DTRK-12G supports a maximum input voltage of 20 V. However, due to its 12 V nominal output, the input-to-output differential is limited to 8.0 V maximum per datasheet Note 1-meaning Vin must not exceed 20.0 V and VIN − VOUT must stay ≤8.0 V. This constraint prevents overstress of internal pass elements while maintaining safe operation in 12 V automotive systems.
Does NCV33269DTRK-12G require an external output capacitor?
Yes, the NCV33269DTRK-12G requires a minimum 10 µF output capacitor with ESR between 0.2 Ω and 10 Ω for stability across temperature. Solid tantalum or low-ESR polymer capacitors are recommended; standard electrolytics may cause oscillation at low temperatures due to rising ESR. Ceramic capacitors are not advised unless carefully characterized, as their near-zero ESR can destabilize the control loop.
Is NCV33269DTRK-12G pin-compatible with MC33269DTRK-12G?
No-while both share identical DPAK-3 pinout (GND/VOUT/VIN) and electrical specifications, the NCV33269DTRK-12G includes automotive-specific process controls, AEC-Q100 qualification, and PPAP documentation. The "NCV" prefix denotes unique site and change control requirements; it is not a drop-in replacement for commercial-grade MC33269 variants in production automotive applications without revalidation.
What thermal derating applies to NCV33269DTRK-12G at 125°C ambient?
At TA = 125°C, the NCV33269DTRK-12G's maximum continuous output current is reduced to ~450 mA (per Figure 4 and thermal resistance θJA = 92°C/W for DPAK). Full 800 mA operation requires board-level thermal design-such as ≥25 mm² 2-oz copper pad under the heatsink tab-to maintain TJ ≤150°C. Derating curves are provided in Figures 8–10 of the datasheet.
Can NCV33269DTRK-12G be used in adjustable-output configurations?
No-the NCV33269DTRK-12G is a fixed 12 V output variant. Only the "Adj" suffix parts (e.g., NCV33269DTRKAG) provide the adjust pin and 1.25 V reference for programmable outputs. Attempting to configure the -12G version as adjustable will result in incorrect regulation, as its internal feedback network is hardwired for 12 V and lacks the VADJ terminal.
NCV33269DTRK-12G 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):
- 12V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.35V @ 800mA
- Current - Output:
- 800mA
- Current - Quiescent (Iq):
- -
- 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-12G FAQ
1.How can I place an order for NCV33269DTRK-12G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV33269DTRK-12G 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-12G reliable?
The price and inventory of NCV33269DTRK-12G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV33269DTRK-12G is usually 5 days.
3.What payment methods are accepted for NCV33269DTRK-12G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV33269DTRK-12G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV33269DTRK-12G?
NCV33269DTRK-12G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV33269DTRK-12G 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-12G?
For technical support, including NCV33269DTRK-12G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV33269DTRK-12G requirements.
6.How does Aetrix verify that NCV33269DTRK-12G is sourced from the original manufacturer or authorized distributors?
All NCV33269DTRK-12G 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-12G meets industry standards.
7.What is the process for return or replacement of NCV33269DTRK-12G?
All NCV33269DTRK-12G units undergo pre-shipment inspection (PSI). If there is an issue with NCV33269DTRK-12G, 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-12G part is unused and in its original packaging.
Return procedure for NCV33269DTRK-12G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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