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onsemi NCV4274ADT50RKG-IR01
- Part No.:
- NCV4274ADT50RKG-IR01
- Manufacturer:
- onsemi
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
NCV4274ADT50RKG-IR01.pdf
- Description:
- IC REG LINEAR 5V 400MA DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:3,778
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Product details
Overview
NCV4274ADT50RKG-IR01 from onsemi is an automotive-grade, 2% accurate, 5.0 V fixed-output linear voltage regulator in DPAK package, delivering up to 400 mA output current with 500 mV max dropout at 250 mA and 150 µA quiescent current at 1 mA load. It features reverse-battery protection, thermal shutdown, short-circuit protection, and withstands +60 V transient and −42 V reverse voltage - designed for engine control units, body electronics, and battery-powered microprocessor systems.
For engineers reviewing the NCV4274ADT50RKG-IR01 datasheet, pinout, applications, or equivalent options, key selection criteria include AEC-Q100 qualification, ±2% output accuracy over −40°C to +150°C, low-IQ operation in sleep-mode automotive subsystems, and fault resilience under load-dump conditions.
Technical Context
The NCV4274ADT50RKG-IR01 employs a PNP pass transistor architecture with precision bandgap reference and error amplifier for tight regulation. Its saturation control prevents over-saturation during low-input-voltage operation, enabling stable performance down to VI = 5.5 V for the 5.0 V version.
Protection circuitry includes internal current limiting (400–600 mA), thermal shutdown (165–210°C), and robust ESD ratings (4 kV HBM, 200 V MM, 1 kV CDM). The device meets automotive transients per ISO 7637-2 and supports Pb-free reflow per J-STD-020C MSL1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2% (guaranteed across −40°C to +150°C, 5–40 V input) |
| Max Output Current | 400 mA continuous - sufficient for MCU cores, CAN transceivers, and sensor interfaces |
| Dropout Voltage | ≤500 mV at 250 mA load - enables operation with minimal headroom (e.g., 5.5 V input → 5.0 V out) |
| Quiescent Current | 150 µA at 1 mA load - critical for always-on automotive modules with low standby power budgets |
| Input Voltage Range | 5.5 V to 40 V - covers cold-crank (≥5.5 V) and load-dump (≤40 V) automotive battery conditions |
| Thermal Shutdown | 165°C to 210°C (design-guaranteed) - protects against sustained overload or poor heatsinking |
| Transient Withstand | +60 V peak (100 ms), −42 V reverse - meets ISO 16750-2 requirements for automotive environments |
Pinout & Package
DPAK-3 (TO-252-3) package: thermally enhanced surface-mount outline (6.10 × 6.54 × 2.28 mm), with exposed tab for PCB thermal relief. Pin 1 = Input, Pins 2 & 4 = Ground, Pin 3 = Output.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Input) | VI supply connection | Bypass directly with ≥100 nF ceramic capacitor to GND; handles up to 40 V DC + 60 V transients |
| 2, 4 (Ground) | Power ground reference | Low-impedance return path for input, output, and internal bias currents; connects to exposed tab |
| 3 (Output) | Regulated 5.0 V output | Requires ≥10 µF output capacitor (22 µF recommended); ESR ≤2.5 Ω ensures stability |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualified | Validated for −40°C to +125°C ambient (150°C junction), PPAP-capable for automotive OEM production |
| Reverse-battery protection | Withstands −42 V applied to input without damage or latch-up - eliminates need for external diode |
| Load-dump survivability | Operates through +60 V/100 ms transients per ISO 7637-2 Pulse 5a - no external TVS required in many cases |
| Low-noise regulation | 60 dB PSRR at 100 Hz - suppresses ripple from alternator or switching pre-regulators feeding the input |
| Thermal foldback | Reduces output current progressively above 125°C junction to prevent thermal runaway during sustained overload |
Applications
| Engine Control Unit (ECU) Power Supply | Body Control Module (BCM) Subsystem |
|---|---|
Use Scenario: Powers 32-bit MCU core, CAN controller, and analog sensors in under-hood ECU exposed to wide temperature and voltage transients. IC Role / Device Role / Timing Role: Primary 5.0 V LDO supplying critical logic and interface circuits; maintains regulation during cold-crank (5.5 V) and load-dump (40 V). Use Value: Eliminates need for external transient clamping and reverse-polarity protection, reducing BOM count and PCB area by ≥2 components. |
Use Scenario: Supplies door module microcontroller, LIN transceiver, and LED drivers in passenger compartment with strict low-power sleep requirements. IC Role / Device Role / Timing Role: Always-on 5.0 V rail with ultra-low IQ; enables <100 µA system sleep current while retaining wake-on-LIN capability. Use Value: 150 µA quiescent current at 1 mA load ensures battery drain remains below 20 µA typical in deep-sleep mode - extends vehicle parasitic draw compliance. |
| Advanced Driver Assistance System (ADAS) Camera Module | Automotive Infotainment Processor Core Rail |
Use Scenario: Provides clean 5.0 V for image signal processor and high-speed serializer in rear-view camera exposed to engine bay heat and vibration. IC Role / Device Role / Timing Role: Post-regulator after buck converter; filters switching noise and compensates for input ripple from upstream DC/DC. Use Value: 60 dB PSRR at 100 Hz attenuates buck converter ripple, preventing visible noise bands in captured video output. |
Use Scenario: Supplies 5.0 V auxiliary rail for USB PHY, audio codec, and display interface in head-unit mainboard. IC Role / Device Role / Timing Role: Secondary regulated rail supporting peripherals requiring tighter tolerance than main 5 V buck output. Use Value: ±2% output accuracy ensures USB 2.0 signaling integrity and audio DAC reference stability across full temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73350PDBVR | 300 mA output, 220 mV dropout, 50 µA IQ, SOT-23-5 package, no reverse-battery or load-dump rating | Consumer/portable electronics only; unsuitable for automotive due to missing AEC-Q100 and transient specs | Select only for non-automotive, space-constrained, low-current apps where ultra-low IQ outweighs fault protection needs. |
| TPS7B8750QKVURQ1 | 500 mA output, 300 mV dropout, 28 µA IQ, wettable flank QFN, AEC-Q100 Grade 1, +45 V abs max | Higher voltage rating but lower transient tolerance (+45 V vs. +60 V); requires external reverse-protection diode | Prefer when board space is critical and thermal performance via QFN is prioritized over DPAK's higher surge margin. |
Compared with TLV73350PDBVR and TPS7B8750QKVURQ1, the NCV4274ADT50RKG-IR01 uniquely combines DPAK thermal robustness, integrated −42 V reverse protection, and +60 V load-dump survival - making it the only drop-in solution for cost-sensitive, high-reliability automotive LDO applications requiring no external protection components.
Availability
NCV4274ADT50RKG-IR01 is available at Aetrix Electronics and suitable for engine control units, body electronics modules, and ADAS camera power supplies requiring stable component supply, AEC-Q100 compliance, and long-term automotive lifecycle support.
Supply support for NCV4274ADT50RKG-IR01 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 focused on energy-efficient electronics, with leadership in automotive, industrial, cloud, and IoT markets.
The NCV4274 series belongs to onsemi's automotive-qualified linear regulator product line, engineered specifically for harsh-vehicle-environment power management - emphasizing fault resilience, extended temperature operation, and regulatory compliance (AEC-Q100, ISO 16750).
FAQ
What is the maximum input voltage the NCV4274ADT50RKG-IR01 can withstand during load-dump events?
The NCV4274ADT50RKG-IR01 is rated for +60 V peak transient voltage with respect to ground for up to 100 ms, per ISO 7637-2 Pulse 5a. This allows direct connection to automotive battery rails without external TVS diodes in most standard load-dump scenarios. The absolute maximum continuous input voltage remains 45 V, and operation above 40 V is not recommended for sustained periods. NCV4274ADT50RKG-IR01 maintains regulation and survives this transient without latch-up or parametric shift.
Does the NCV4274ADT50RKG-IR01 require an external reverse-polarity protection diode?
No. The NCV4274ADT50RKG-IR01 integrates reverse-battery protection and is specified to withstand −42 V applied to the input pin without damage or functional degradation. This eliminates the need for an external series Schottky diode, saving PCB space, forward-voltage drop (and associated power loss), and BOM cost. The device remains fully functional after reverse connection removal, with no reset or recovery delay required. NCV4274ADT50RKG-IR01 achieves this via internal MOSFET-based blocking architecture.
What output capacitor value and type are recommended for stable operation of the NCV4274ADT50RKG-IR01?
For the NCV4274ADT50RKG-IR01, a minimum 10 µF ceramic or tantalum capacitor is required at the output; 22 µF is recommended for improved load-transient response and margin. The capacitor must have ESR ≤2.5 Ω across −40°C to +125°C. Aluminum electrolytics are discouraged below −25°C due to ESR drift. Stability is guaranteed with COUT ≥2.2 µF and ESR ≤2.5 Ω - verified across all operating conditions in the datasheet's ESR characterization curves. NCV4274ADT50RKG-IR01 does not require an external compensation network.
Is the NCV4274ADT50RKG-IR01 pin-compatible with other variants in the NCV4274 family?
Yes - all DPAK-packaged NCV4274 and NCV4274A variants (e.g., NCV4274ADT33RKG, NCV4274DT50RKG) share identical pinout: Pin 1 = Input, Pins 2 & 4 = Ground, Pin 3 = Output. This allows voltage-option flexibility (2.5 V, 3.3 V, 5.0 V, 8.5 V) and accuracy choice (±2% or ±4%) without PCB redesign. NCV4274ADT50RKG-IR01 uses the same footprint and thermal pad layout as NCV4274ADT33RKG, enabling drop-in replacement during design iteration or qualification.
What is the thermal resistance (RθJA) of the NCV4274ADT50RKG-IR01 in its DPAK package?
The NCV4274ADT50RKG-IR01 in DPAK package has a maximum junction-to-ambient thermal resistance (RθJA) of 70°C/W under standard test conditions (soldered on minimal footprint, FR4 board). With a 5 mm² copper pour on the thermal pad, RθJA improves to ~40°C/W. Its junction-to-case (RθJC) is 4°C/W, enabling effective heat transfer to the PCB. For 400 mA load at 40 V input, power dissipation reaches ~14 W - requiring adequate copper area or optional heatsink to maintain TJ < 150°C. NCV4274ADT50RKG-IR01's thermal performance is validated per JEDEC JESD51-2.
NCV4274ADT50RKG-IR01 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:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 250mA
- Current - Output:
- 400mA
- Current - Quiescent (Iq):
- 250 µA
- Current - Supply (Max):
- 35 mA
- PSRR:
- 60dB (100Hz)
- Control Features:
- -
- Protection Features:
- Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
NCV4274ADT50RKG-IR01 FAQ
1.How can I place an order for NCV4274ADT50RKG-IR01 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV4274ADT50RKG-IR01 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 NCV4274ADT50RKG-IR01 reliable?
The price and inventory of NCV4274ADT50RKG-IR01 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV4274ADT50RKG-IR01 is usually 5 days.
3.What payment methods are accepted for NCV4274ADT50RKG-IR01?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV4274ADT50RKG-IR01 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV4274ADT50RKG-IR01?
NCV4274ADT50RKG-IR01 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV4274ADT50RKG-IR01 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 NCV4274ADT50RKG-IR01?
For technical support, including NCV4274ADT50RKG-IR01 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV4274ADT50RKG-IR01 requirements.
6.How does Aetrix verify that NCV4274ADT50RKG-IR01 is sourced from the original manufacturer or authorized distributors?
All NCV4274ADT50RKG-IR01 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 NCV4274ADT50RKG-IR01 meets industry standards.
7.What is the process for return or replacement of NCV4274ADT50RKG-IR01?
All NCV4274ADT50RKG-IR01 units undergo pre-shipment inspection (PSI). If there is an issue with NCV4274ADT50RKG-IR01, 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 NCV4274ADT50RKG-IR01 part is unused and in its original packaging.
Return procedure for NCV4274ADT50RKG-IR01:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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