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onsemi NCV4274ADS85R4G
- Part No.:
- NCV4274ADS85R4G
- Manufacturer:
- onsemi
- Package:
- TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Datasheet:
-
NCV4274ADS85R4G.pdf
- Description:
- IC REG LINEAR 8.5V 400MA D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:2,876
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Product details
Overview
NCV4274ADS85R4G from onsemi is an automotive-grade, 2% accurate, 8.5 V fixed-output linear voltage regulator in D2PAK 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 (−42 V), +60 V transient tolerance, thermal shutdown, and short-circuit protection - designed for engine control units and automotive body electronics.
For engineers reviewing the NCV4274ADS85R4G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, validated pin functions, automotive-qualified thermal behavior, and real-world substitution guidance - all grounded in the official onsemi NCV4274/D Rev. 17 datasheet.
Technical Context
The NCV4274ADS85R4G 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 includes internal current limiting, thermal overload cutoff at 165–210 °C, and robust transient immunity.
It operates across −40 °C to +150 °C junction temperature, supports input voltages from 9.0 V to 40 V (for 8.5 V output), and maintains output accuracy within ±2.0% over full load (5–400 mA) and temperature range - confirmed for the 8.5 V variant in Tables 1–3 of the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 8.5 V ±2.0% (8.33–8.67 V), guaranteed over 5–400 mA load and −40 °C to +150 °C. |
| Max Output Current | 400 mA continuous; current limit trips at 400–600 mA to prevent damage during overload. |
| Dropout Voltage | 500 mV max at 250 mA load (VI = 8.5 V), enabling operation with minimal headroom in 12 V automotive systems. |
| Quiescent Current | 150 µA at 1 mA load; rises to 250 µA at 400 mA - critical for always-on vehicle modules. |
| Input Voltage Range | 9.0 V to 40 V DC; withstands +60 V transients and −42 V reverse battery without latch-up. |
| Thermal Shutdown | Activates at 165–210 °C junction temperature; guarantees safe operation under sustained overload or poor heatsinking. |
| Package Thermal Resistance | RthJC = 3 °C/W (D2PAK), enabling >2 W power dissipation with modest heatsinking. |
Pinout & Package
D2PAK (TO-263) package, 3-pin configuration with exposed tab (pin 4) serving as thermal and electrical ground - case outline per onsemi CASE 418AF, dimensions 10.67 × 9.65 × 4.83 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Input) | Regulator input supply | Connect directly to battery rail via low-ESR ceramic capacitor (≥100 nF) to suppress high-frequency noise and stabilize input impedance. |
| 2, 4 (Ground) | Power and thermal ground | Pins 2 and 4 are internally connected to the exposed metal tab - must be soldered to large PCB copper area for thermal management and low-impedance return path. |
| 3 (Output) | Regulated 8.5 V output | Requires ≥22 µF low-ESR output capacitor (aluminum or tantalum) for stability; ESR must stay below 2.5 Ω across operating temperature. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Qualified to Grade 1 (−40 °C to +125 °C ambient) and PPAP-capable - meets automotive functional safety baseline requirements. |
| Reverse-battery protection | Withstands −42 V applied to input while maintaining zero output current - eliminates need for external series diode in battery-reversal-prone systems. |
| Load dump immunity | Survives ISO 7637-2 Pulse 5a (±60 V, 100 ms) without derating - suitable for direct connection to vehicle battery without external TVS. |
| Low-noise regulation | 60 dB PSRR at 100 Hz enables clean power for analog sensors and CAN transceivers sharing same 12 V rail. |
| Pb-free & RoHS compliant | Meets J-STD-020C MSL Level 1; reflow-compatible up to 265 °C peak - supports lead-free manufacturing without reliability compromise. |
Applications
| Engine Control Unit (ECU) Power Supply | Body Control Module (BCM) Sensor Bias |
|---|---|
Use Scenario: Powers microcontroller, CAN interface, and analog front-end in gasoline/diesel engine ECUs exposed to wide temperature swings and load dump events. IC Role / Device Role / Timing Role: Primary 8.5 V bias rail regulator supplying core logic and communication peripherals. Use Value: Eliminates need for external transient protection and reverse-polarity diode - reduces BOM count by two components while meeting OEM EMC and reliability specs. |
Use Scenario: Supplies stable 8.5 V to door lock actuators, interior lighting drivers, and LIN transceivers in BCMs. IC Role / Device Role / Timing Role: Secondary regulated rail decoupled from main 5 V domain to isolate noise-sensitive analog functions. Use Value: 150 µA quiescent current ensures <10 µA total sleep-mode leakage per module - critical for meeting ISO 16750-2 parasitic drain limits. |
| Advanced Driver Assistance Systems (ADAS) Camera Power | Automotive Infotainment Display Backlight Driver Bias |
Use Scenario: Provides clean 8.5 V to image signal processors and CIS sensor bias circuits in rear-view and surround-view cameras. IC Role / Device Role / Timing Role: Low-noise pre-regulator feeding downstream DC-DC converters for pixel clock and analog supply domains. Use Value: 60 dB PSRR suppresses ripple from switching supplies upstream, preventing visible banding artifacts in captured video. |
Use Scenario: Delivers precise 8.5 V to LED driver ICs controlling LCD backlight brightness in instrument clusters and center displays. IC Role / Device Role / Timing Role: Reference voltage source for current-sense amplifiers and PWM dimming comparators. Use Value: ±2.0% output accuracy ensures consistent LED luminance across temperature and unit-to-unit variation - avoids customer-visible brightness drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV4274ADS50R4G | 5.0 V output (±2%), identical D2PAK package, same 400 mA rating and protection features. | Used where system requires 5 V logic rail instead of 8.5 V analog bias; shares same layout and thermal design. | Select when target voltage matches 5.0 V and board space/layout reuse is prioritized over output voltage. |
| TLV73385PDBVR | 8.5 V output (±1%), SOT-23-5 package, 300 mA max, 65 µA IQ, no reverse-battery or load-dump protection. | Suitable for non-automotive, low-power portable devices; lacks AEC-Q100 qualification and automotive fault robustness. | Choose only for cost-sensitive consumer applications where automotive-grade ruggedness is unnecessary and footprint is constrained. |
Compared with NCV4274ADS85R4G, the NCV4274ADS50R4G offers identical automotive qualification and mechanical compatibility but targets 5 V logic domains, while TLV73385PDBVR trades ruggedness and current capability for ultra-low IQ and small size - making it unsuitable for under-hood use.
Availability
NCV4274ADS85R4G is available at Aetrix Electronics and suitable for automotive engine control, body electronics, ADAS camera modules, and infotainment display subsystems requiring stable component supply with full AEC-Q100 traceability and long-term production support.
Supply support for NCV4274ADS85R4G 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 NCV4274ADS85R4G belongs to onsemi's NCV4274 automotive voltage regulator family, engineered specifically for under-hood and chassis-mounted electronics requiring high transient immunity, extended temperature operation, and AEC-Q100 compliance.
FAQ
What is the maximum input voltage the NCV4274ADS85R4G can handle continuously?
The NCV4274ADS85R4G supports continuous input voltages from 9.0 V to 40 V for its 8.5 V output version. Its absolute maximum rating allows +60 V transient spikes (per ISO 7637-2 Pulse 5a), but sustained operation above 40 V risks permanent damage. Always verify VI remains within 9.0–40 V during normal operation and transients.
Does the NCV4274ADS85R4G require an external capacitor on the input pin?
Yes, the NCV4274ADS85R4G requires a minimum 100 nF ceramic capacitor placed directly between pin 1 (Input) and pins 2/4 (Ground). This capacitor stabilizes input impedance and prevents oscillation due to PCB trace inductance - omission risks instability or erratic regulation, especially in noisy automotive environments.
Can the NCV4274ADS85R4G be used without a heatsink in a D2PAK package?
The NCV4274ADS85R4G can operate without an external heatsink at ≤250 mA load and ambient temperatures ≤70 °C, provided the D2PAK tab (pins 2/4) is soldered to ≥5 cm² of 1 oz copper. At 400 mA or higher ambient, thermal calculations using RthJA = 60 °C/W confirm junction temperature exceeds 150 °C - requiring either reduced load or external heatsinking.
Is the NCV4274ADS85R4G pin-compatible with other NCV4274 variants?
Yes, all NCV4274 variants in D2PAK (e.g., NCV4274ADS50R4G, NCV4274ADS33R4G) share identical pinout (1=Input, 2/4=GND, 3=Output) and mechanical footprint (CASE 418AF). Voltage and accuracy differences are internal - enabling drop-in replacement for design flexibility without PCB revision.
What does the "R4G" suffix mean in NCV4274ADS85R4G?
In NCV4274ADS85R4G, "R4" indicates tape-and-reel packaging with 800 units per reel, and "G" denotes Pb-free (RoHS-compliant) construction. The "ADS" segment specifies D2PAK package (DS suffix) and 2% output accuracy (A grade), while "85" denotes the 8.5 V nominal output voltage.
NCV4274ADS85R4G 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):
- 8.5V
- 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 (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
NCV4274ADS85R4G FAQ
1.How can I place an order for NCV4274ADS85R4G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV4274ADS85R4G 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 NCV4274ADS85R4G reliable?
The price and inventory of NCV4274ADS85R4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV4274ADS85R4G is usually 5 days.
3.What payment methods are accepted for NCV4274ADS85R4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV4274ADS85R4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV4274ADS85R4G?
NCV4274ADS85R4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV4274ADS85R4G 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 NCV4274ADS85R4G?
For technical support, including NCV4274ADS85R4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV4274ADS85R4G requirements.
6.How does Aetrix verify that NCV4274ADS85R4G is sourced from the original manufacturer or authorized distributors?
All NCV4274ADS85R4G 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 NCV4274ADS85R4G meets industry standards.
7.What is the process for return or replacement of NCV4274ADS85R4G?
All NCV4274ADS85R4G units undergo pre-shipment inspection (PSI). If there is an issue with NCV4274ADS85R4G, 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 NCV4274ADS85R4G part is unused and in its original packaging.
Return procedure for NCV4274ADS85R4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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