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onsemi NCV4274DT33RKG
- Part No.:
- NCV4274DT33RKG
- Manufacturer:
- onsemi
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
NCV4274DT33RKG.pdf
- Description:
- IC REG LINEAR 3.3V 400MA DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:1,314
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Product details
Overview
NCV4274DT33RKG from onsemi is an automotive-grade, 4% accuracy, 3.3 V fixed-output linear voltage regulator in DPAK package, delivering up to 400 mA output current with 500 mV max dropout at 250 mA, 150 µA quiescent current at 1 mA load, and protection against reverse battery (−42 V), load dump (+60 V), short circuit, and thermal overload. It is designed for engine control units, body electronics, and infotainment power rails.
For engineers reviewing the NCV4274DT33RKG datasheet, pinout, applications, or equivalent options, key selection criteria include automotive AEC-Q100 qualification, 3.3 V ±4% output tolerance, DPAK thermal performance (RthJA = 70 °C/W), fault robustness under transients, and compatibility with low-ESR ceramic output capacitors (≥10 µF).
Technical Context
The NCV4274DT33RKG uses a PNP pass transistor with saturation control to maintain regulation during low-input conditions, paired with a precision trimmed bandgap reference and error amplifier. Its internal current limit and thermal shutdown circuitry provide autonomous fault response without external supervision.
It operates across −40 °C to +150 °C junction temperature, supports input voltages from 4.5 V to 40 V, and maintains stable regulation with output capacitor ESR as low as 2.5 Ω - enabling compact, high-reliability designs in space-constrained automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±4% (2.97–3.43 V) - meets automotive supply rail tolerance for microcontroller I/O and peripheral logic. |
| Max Output Current | 400 mA - sufficient to power multiple CAN transceivers, sensors, or MCU subsystems from single regulator. |
| Dropout Voltage | 500 mV at 250 mA - enables operation down to 3.8 V input, supporting cold-crank scenarios in 12 V systems. |
| Quiescent Current | 150 µA at 1 mA load - minimizes standby power loss in always-on vehicle modules (e.g., alarm, telematics). |
| Input Transient Withstand | +60 V peak / −42 V reverse - survives ISO 7637-2 Pulse 1, 2a, 3a/b, and load dump events without external clamping. |
| Junction Temp Range | −40 °C to +150 °C - qualified for under-hood and transmission-control applications per AEC-Q100 Grade 1. |
| Thermal Resistance | RthJA = 70 °C/W (DPAK, minimal footprint) - requires no heatsink below ~1.2 W dissipation at 25 °C ambient. |
Pinout & Package
DPAK-3 (TO-252-3) package, case 369C, with exposed tab (pin 2/4) for thermal and electrical grounding. Standard lead-free finish, RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (VI) | Bypass directly with ≥100 nF ceramic capacitor to GND; handles up to 40 V DC + 60 V transient. |
| 2, 4 | Ground (GND) | Common return path and thermal tab connection; must be soldered to large PCB copper area for thermal management. |
| 3 | Output (VQ) | Regulated 3.3 V output; requires ≥10 µF low-ESR ceramic capacitor (CQ) for stability per Figure 3. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Grade 1 (−40 °C to +125 °C ambient), PPAP-capable - certified for production automotive use. |
| Reverse battery protection | Withstands −42 V applied to input - eliminates need for external series diode in battery-connected circuits. |
| Load dump immunity | Operates through +60 V transients per ISO 7637-2 - avoids external TVS in most 12 V vehicle architectures. |
| Low-noise regulation | 60 dB PSRR at 100 Hz - suppresses alternator ripple and switching noise from upstream DC/DC converters. |
| Stable with ceramic caps | Guaranteed stability with CQ ≥ 10 µF and ESR ≤ 2.5 Ω - enables small, reliable, long-life power stages. |
Applications
| Engine Control Unit (ECU) Power | Body Control Module (BCM) |
|---|---|
Use Scenario: Supplies 3.3 V to MCU core, CAN controller, and analog sensor interfaces in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Primary post-regulator for 5 V or 12 V intermediate bus, providing clean, fault-tolerant 3.3 V domain. Use Value: Survives cranking (6.0–7.5 V input), load dump, and reverse jump-start - eliminates field failures due to transient stress. |
Use Scenario: Powers door module MCUs, LIN transceivers, and LED drivers in centralized body electronics. IC Role / Device Role / Timing Role: Local point-of-load regulator replacing discrete LDO + protection circuits. Use Value: Reduces BOM count by integrating reverse-battery, short-circuit, and thermal protection - cuts board area by >30% vs. discrete solution. |
| Infotainment System Core Rail | Advanced Driver Assistance (ADAS) Camera Power |
Use Scenario: Delivers 3.3 V to audio codec, display interface, and touch controller in head-unit designs. IC Role / Device Role / Timing Role: Low-noise, high-PSRR regulator decoupling noisy switching supplies feeding sensitive analog blocks. Use Value: 60 dB PSRR at 100 Hz reduces audible noise in audio paths; 150 µA Iq extends battery backup runtime. |
Use Scenario: Powers image signal processor (ISP) and MIPI interface in rear-view or surround-view camera modules. IC Role / Device Role / Timing Role: Compact, thermally efficient 3.3 V source mounted near sensor/ISP die for minimal trace inductance. Use Value: DPAK RthJA = 70 °C/W allows full 400 mA output in 60 mm² footprint - avoids thermal derating in sealed camera housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV4274ADT33RKG | ±2% output accuracy (vs. ±4%), same DPAK package and 3.3 V nominal output. | Required where tighter regulation is needed for ADC references or precision analog circuits. | Select NCV4274ADT33RKG when system-level voltage margin is < ±2.5%; otherwise NCV4274DT33RKG offers cost advantage. |
| TLV73333PDBVR | 300 mA max output, 120 µA Iq, SOT-23-5 package, no automotive qualification or load dump rating. | Suitable only for non-automotive, low-power, non-transient environments (e.g., consumer IoT). | Use TLV73333PDBVR only in non-automotive designs lacking ISO 7637-2 requirements; not a drop-in replacement. |
Compared with NCV4274ADT33RKG, the NCV4274DT33RKG trades ±2% accuracy for lower cost and identical fault protection; compared with TLV73333PDBVR, it delivers higher current, automotive qualification, and transient robustness - making it the sole choice for production vehicle electronics.
Availability
NCV4274DT33RKG is available at Aetrix Electronics and suitable for engine control units, body control modules, and infotainment systems requiring stable component supply across extended automotive lifecycles.
Supply support for NCV4274DT33RKG 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, and cloud power solutions.
The NCV4274 series belongs to onsemi's automotive power management portfolio, engineered specifically for harsh-vehicle-environment voltage regulation - emphasizing transient immunity, wide temperature operation, and AEC-Q100 compliance.
FAQ
What is the maximum input voltage the NCV4274DT33RKG can withstand during load dump events?
The NCV4274DT33RKG is rated for +60 V peak transient voltage with respect to ground, per ISO 7637-2 Pulse 5a. This allows direct connection to 12 V vehicle batteries without external TVS diodes in most standard architectures. The device remains functional and undamaged during these events, provided layout follows recommended input capacitance and grounding practices from the datasheet.
Does the NCV4274DT33RKG require an external capacitor on the output pin, and if so, what type and value?
Yes, the NCV4274DT33RKG requires an output capacitor (CQ) of at least 10 µF ceramic with ESR ≤ 2.5 Ω for guaranteed stability, as specified in Figure 3 and the Stability Considerations section. Aluminum electrolytics are discouraged due to ESR drift at low temperatures; X5R/X7R multilayer ceramics are preferred for automotive reliability and consistent performance across −40 °C to +125 °C.
Is the NCV4274DT33RKG pin-compatible with other variants in the NCV4274 family, such as the NCV4274ADT33RKG?
Yes, the NCV4274DT33RKG is pin-compatible with the NCV4274ADT33RKG and all other DPAK-packaged NCV4274 variants. Both share identical pin 1 (Input), pins 2/4 (GND), and pin 3 (Output) assignments, same footprint, and thermal pad layout - enabling direct substitution on existing PCBs when ±4% output tolerance is acceptable.
What protection features are integrated into the NCV4274DT33RKG?
The NCV4274DT33RKG integrates reverse-battery protection (−42 V), short-circuit current limiting (~400–600 mA), thermal shutdown (trip at 165–210 °C), and load dump survival (+60 V). These functions operate autonomously without external components, eliminating discrete protection circuitry and reducing design complexity for automotive power domains.
Can the NCV4274DT33RKG be used in non-automotive applications, and does it require derating outside automotive temperature ranges?
Yes, the NCV4274DT33RKG can be used in industrial or commercial applications, but its guaranteed operating range remains −40 °C to +150 °C junction temperature. Outside automotive contexts, no derating is required within this range; however, the part's AEC-Q100 qualification and enhanced transient specs provide margin beyond typical industrial requirements - making it suitable for high-reliability non-automotive systems like railway controls or off-highway equipment.
NCV4274DT33RKG 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):
- 40V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.33V @ 250mA
- Current - Output:
- 400mA
- Current - Quiescent (Iq):
- 250 µA
- Current - Supply (Max):
- 45 mA
- PSRR:
- 60dB (100Hz)
- Control Features:
- -
- Protection Features:
- Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
NCV4274DT33RKG FAQ
1.How can I place an order for NCV4274DT33RKG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV4274DT33RKG 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 NCV4274DT33RKG reliable?
The price and inventory of NCV4274DT33RKG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV4274DT33RKG is usually 5 days.
3.What payment methods are accepted for NCV4274DT33RKG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV4274DT33RKG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV4274DT33RKG?
NCV4274DT33RKG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV4274DT33RKG 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 NCV4274DT33RKG?
For technical support, including NCV4274DT33RKG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV4274DT33RKG requirements.
6.How does Aetrix verify that NCV4274DT33RKG is sourced from the original manufacturer or authorized distributors?
All NCV4274DT33RKG 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 NCV4274DT33RKG meets industry standards.
7.What is the process for return or replacement of NCV4274DT33RKG?
All NCV4274DT33RKG units undergo pre-shipment inspection (PSI). If there is an issue with NCV4274DT33RKG, 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 NCV4274DT33RKG part is unused and in its original packaging.
Return procedure for NCV4274DT33RKG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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