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onsemi NCV4274CDS33R4G
- Part No.:
- NCV4274CDS33R4G
- Manufacturer:
- onsemi
- Package:
- TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Datasheet:
-
NCV4274CDS33R4G.pdf
- Description:
- IC REG LINEAR 3.3V 400MA D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:1,042
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Product details
Overview
NCV4274CDS33R4G from onsemi is an AEC-Q100 qualified automotive-grade low-dropout linear voltage regulator delivering a precise 3.3 V ±2.0% output at up to 400 mA, with 0.5 V max dropout at 250 mA and 125 µA quiescent current at 1 mA load - designed for engine control units, body electronics, and battery-powered microprocessor systems.
For engineers reviewing the NCV4274CDS33R4G datasheet, pinout, applications, or equivalent options, key selection criteria include its −42 V reverse-battery tolerance, +60 V load-dump transient capability, thermal shutdown (150°C), short-circuit protection, and D2PAK package suitability for high-power automotive PCB layouts.
Technical Context
The NCV4274CDS33R4G uses a PNP pass transistor architecture with precision bandgap reference and error amplifier feedback, enabling stable regulation under low-input-voltage conditions via saturation control. Its fault protection integrates reverse-battery diode emulation, current-limit sensing, and thermal shutdown with hysteresis.
It operates across −40°C to +150°C junction temperature and supports input voltages from 4.5 V to 40 V - validated per ISO16750-2 Load Dump Test B (Class C) - with PSRR of 60 dB at 100 Hz and load regulation ≤20 mV over 5–400 mA output range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±2.0% - ensures reliable logic-level supply for 3.3 V microcontrollers and CAN transceivers in automotive environments. |
| Max Output Current | 400 mA - sufficient to power multiple ECUs subsystems (e.g., sensor interfaces, LIN gateways) without external boosting. |
| Dropout Voltage | ≤500 mV at 250 mA - enables operation down to 3.8 V input, critical during cold-crank battery dips. |
| Quiescent Current | 125 µA at 1 mA load - minimizes standby power loss in always-on vehicle modules (e.g., alarm controllers, telematics). |
| Input Voltage Range | 4.5 V to 40 V - covers full automotive battery range including load dump transients up to +60 V peak. |
| Fault Protection | Reverse battery (−42 V), short circuit, thermal overload - eliminates need for external protection components in harsh environments. |
| Thermal Resistance | RthJC = 5.8°C/W (D2PAK) - allows >3 W continuous dissipation with minimal heatsink area on 1 oz copper PCB. |
Pinout & Package
D2PAK (TO-263-3) package: thermally enhanced surface-mount housing with exposed metal tab (pin 4) for direct PCB thermal coupling; 10.24 mm × 14.71 mm footprint; 2.29 mm height; RoHS-compliant Pb-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (VI) | Bypassed directly at IC with ≥100 nF ceramic capacitor to GND - suppresses high-frequency noise and stabilizes input impedance. |
| 2, 4 | Ground (GND) | Pins 2 and 4 are internally connected to substrate ground - both must be soldered to large copper pour for optimal thermal and EMI performance. |
| 3 | Output (VQ) | Regulated 3.3 V output; requires ≥10 µF low-ESR capacitor (tantalum or polymer) to ensure stability per Figure 3 and Figure 13. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C ambient operation - meets automotive reliability and stress-test requirements out-of-box. |
| +60 V / −42 V transient tolerance | Withstands ISO16750-2 load dump and reverse-battery faults without latch-up or damage - reduces system-level protection complexity. |
| Low 125 µA quiescent current | Enables <10 µW standby power at 3.3 V - extends battery life in key-off modules beyond 10 years per OEM specifications. |
| 400 mA output with 0.5 V dropout | Maintains regulation during 12 V battery sag to 6.5 V - supports robust cold-cranking behavior in start-stop systems. |
| Integrated thermal shutdown | Triggers at 150°C junction temperature with hysteresis - prevents permanent die damage during sustained overload or poor heatsinking. |
Applications
| Engine Control Unit (ECU) Power Supply | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 3.3 V microcontroller, CAN FD transceiver, and analog sensor front-end in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Primary 3.3 V LDO regulator supplying core logic and communication peripherals with tight voltage accuracy and transient immunity. Use Value: Maintains MCU operation during 12 V battery dip to 6 V and survives +60 V load dump spikes - eliminating need for external TVS or crowbar circuits. | Use Scenario: Supplies door module microcontrollers, window lift drivers, and LIN transceivers in centralized body electronics architecture. IC Role / Device Role / Timing Role: Main 3.3 V rail generator with reverse-battery protection for always-on submodules (e.g., keyless entry receivers). Use Value: Withstands −42 V reverse connection during service - prevents field failures due to incorrect battery jump-starting. |
| Advanced Driver Assistance Systems (ADAS) Camera Module | Telematics Control Unit (TCU) |
Use Scenario: Provides clean 3.3 V bias to image sensor, ISP, and MIPI interface in rear-view or surround-view camera ECU. IC Role / Device Role / Timing Role: Low-noise post-regulator after DC-DC conversion - ensures stable pixel clock and analog signal integrity. Use Value: 60 dB PSRR at 100 Hz suppresses switching noise from upstream buck converter - reduces image artifacts and bit errors. | Use Scenario: Powers LTE modem baseband processor, GNSS receiver, and secure element in cellular-connected vehicle platforms. IC Role / Device Role / Timing Role: Always-on 3.3 V supply with ultra-low IQ for wake-on-LIN/CAN functionality and remote firmware updates. Use Value: 125 µA quiescent current limits parasitic drain to <0.5 mA total - satisfies OEM 10-year battery hold requirement for parked vehicles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73333PDBVR | 300 mA output, 250 mV dropout at 300 mA, 50 µA IQ, SOT-23-5 package | Limited to lower-power modules (e.g., sensors, small MCUs); no automotive qualification or load-dump rating | Select when cost, size, and ultra-low IQ outweigh automotive ruggedness and high-current needs. |
| TPS7B8733QKVURQ1 | 400 mA, 300 mV dropout at 300 mA, 26 µA IQ, AEC-Q100 Grade 1, DDA package | Higher PSRR (70 dB @ 100 Hz), integrated enable/PG pins, but higher cost and smaller thermal pad | Choose for noise-sensitive ADAS domains requiring tighter ripple rejection and diagnostics. |
Compared with TLV73333PDBVR and TPS7B8733QKVURQ1, the NCV4274CDS33R4G offers superior transient robustness (+60 V/−42 V) and proven thermal performance in D2PAK - making it optimal for high-reliability, high-current automotive power rails where ruggedness trumps ultra-low IQ or advanced features.
Availability
NCV4274CDS33R4G is available at Aetrix Electronics and suitable for engine control units, body control modules, and telematics systems requiring stable component supply across extended automotive lifecycles.
Supply support for NCV4274CDS33R4G 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, analog, sensor, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.
The NCV4274CDS33R4G belongs to onsemi's automotive-qualified linear regulator product line, engineered specifically for harsh-environment power management in engine, chassis, and infotainment systems - emphasizing fault resilience, wide temperature operation, and AEC-Q100 compliance.
FAQ
What is the maximum input voltage the NCV4274CDS33R4G can withstand during load dump events?
The NCV4274CDS33R4G is rated for +60 V peak transient voltage with respect to GND under load dump conditions per ISO16750-2 Class C testing. This rating is guaranteed by design and applies to the D2PAK package variant. The device sustains this stress without latch-up or parametric shift, enabling direct integration into 12 V automotive systems without external clamping diodes.
Does the NCV4274CDS33R4G require an external capacitor on the output pin, and what value is recommended?
Yes, the NCV4274CDS33R4G requires an output capacitor for stability. For the 3.3 V version, a minimum 10 µF low-ESR capacitor (tantalum or polymer) is specified in Figure 3 and validated in Figure 13. Ceramic capacitors may be used if ESR is ≥100 mΩ; otherwise, instability occurs in the unstable region shown in the ESR vs. capacitance plot. The capacitor must be placed within 5 mm of pin 3.
Is the NCV4274CDS33R4G still in active production, or is it marked as discontinued?
The NCV4274CDS33R4G is listed as "DISCONTINUED" in the official onsemi datasheet (page 12), meaning it is not recommended for new designs. However, Aetrix Electronics maintains legacy inventory and supports ongoing production programs with full traceability, extended lifecycle coordination, and obsolescence mitigation planning for customers already using this part.
What thermal performance can be expected from the NCV4274CDS33R4G in a standard D2PAK layout?
In a standard 1 oz copper PCB with 645 mm² (1 in²) copper spreader area, the NCV4274CDS33R4G achieves RJA ≈ 56.7°C/W (per page 3). At 400 mA output and 13.5 V input, power dissipation is ~4.1 W - resulting in ~230°C junction rise above ambient. Therefore, a heatsink or larger copper area is required to maintain TJ < 150°C; Figure 22 provides RJA vs. copper area curves for optimization.
How does the NCV4274CDS33R4G handle reverse battery connection, and what is its rating?
The NCV4274CDS33R4G incorporates internal reverse-battery protection and is rated for −42 V applied to the input pin with respect to GND. This feature prevents damage or backfeeding during incorrect jump-starting or battery replacement - a critical requirement for automotive modules. No external diode is needed, reducing BOM count and forward-voltage drop losses.
NCV4274CDS33R4G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- 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):
- -
- 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 (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
NCV4274CDS33R4G FAQ
1.How can I place an order for NCV4274CDS33R4G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV4274CDS33R4G 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 NCV4274CDS33R4G reliable?
The price and inventory of NCV4274CDS33R4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV4274CDS33R4G is usually 5 days.
3.What payment methods are accepted for NCV4274CDS33R4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV4274CDS33R4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV4274CDS33R4G?
NCV4274CDS33R4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV4274CDS33R4G 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 NCV4274CDS33R4G?
For technical support, including NCV4274CDS33R4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV4274CDS33R4G requirements.
6.How does Aetrix verify that NCV4274CDS33R4G is sourced from the original manufacturer or authorized distributors?
All NCV4274CDS33R4G 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 NCV4274CDS33R4G meets industry standards.
7.What is the process for return or replacement of NCV4274CDS33R4G?
All NCV4274CDS33R4G units undergo pre-shipment inspection (PSI). If there is an issue with NCV4274CDS33R4G, 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 NCV4274CDS33R4G part is unused and in its original packaging.
Return procedure for NCV4274CDS33R4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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