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onsemi NCV4276ADS50R4G
- Part No.:
- NCV4276ADS50R4G
- Manufacturer:
- onsemi
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
NCV4276ADS50R4G.pdf
- Description:
- IC REG LINEAR 5V 400MA D2PAK-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,311
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Product details
Overview
NCV4276ADS50R4G from onsemi is an automotive-grade 400 mA low-dropout linear regulator with fixed 5.0 V output, ±4% accuracy, 500 mV max dropout at 250 mA, reverse input voltage protection (−42 V), and +45 V peak transient tolerance. It features inhibit control, thermal shutdown, and overcurrent protection for engine control units and body electronics.
For engineers reviewing the NCV4276ADS50R4G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, package-validated pin functions, automotive thermal derating data, and real-world stability guidance for ceramic output capacitors.
Technical Context
The NCV4276ADS50R4G uses a PNP pass transistor controlled by a bandgap-referenced error amplifier to achieve ultra-low dropout and temperature-stable regulation. Its saturation control logic minimizes ground current under low-input or overload conditions while maintaining 400 mA output capability across −40°C to +150°C junction temperature.
Inhibit functionality enables precise system-level power sequencing: output disables when INH < 0.5 V (typical) and enables when INH > 3.5 V (typical). Protection includes short-circuit current limiting, thermal shutdown at 150°C (guaranteed by design), and fault-safe operation up to +45 V transient input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±4% (4.8–5.2 V), stable over 5.0 mA–400 mA load and 6.0–28 V input range |
| Max Output Current | 400 mA continuous; current limit trips at 400–1100 mA depending on thermal condition |
| Dropout Voltage | ≤500 mV at 250 mA load (VI − VQ), enabling operation with only 5.5 V input for 5.0 V output |
| Input Voltage Range | Operational: 6.0 V to 28 V; survival: −42 V reverse / +45 V transient (no damage) |
| Quiescent Current | ≤10 µA in sleep mode (INH = 0 V); 10–35 mA at full 400 mA load |
| Thermal Shutdown | Activates at 150°C junction temperature; hysteresis ensures safe restart after cooldown |
| PSRR | ≥60 dB at 100 Hz (0.5 VPP ripple rejection), critical for noise-sensitive MCU power rails |
Pinout & Package
D2PAK-5 (Case 936A, DS suffix) surface-mount package with exposed tab thermally connected to Pin 3 (GND); requires minimum 0.373 in² copper spreader for 74.8°C/W RJA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - I | Battery supply input | Accepts −42 V to +45 V transients; min operating VI = VQ + 0.5 V or 4.5 V, whichever higher |
| 2 - INH | Inhibit control input | Pull ≤0.5 V to disable output; ≥3.5 V to enable; 5–20 µA input current at 5 V |
| 3 - GND | Ground reference & heatsink | Internally bonded to exposed tab; must be soldered to PCB copper for thermal performance |
| 4 - NC | No connect (fixed-voltage version) | Not internally connected; leave unconnected or float - no external circuitry required |
| 5 - Q | Regulated 5.0 V output | Requires 22 µF output capacitor (min ESR defined per load current in Fig. 5–8) |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | NCV prefix confirms AEC-Q100 stress testing, −40°C to +150°C operation, and PPAP-ready manufacturing |
| Reverse voltage protection | Withstands −42 V applied to Pin 1 without latch-up or parametric shift - eliminates need for external diode |
| Transient immunity | +45 V peak input survivability meets ISO 7637-2 Pulse 1/2/5a requirements for 12 V automotive systems |
| Stability with ceramic caps | Validated stable with 22 µF X7R ceramics (e.g., Murata GRM32ER71C226KE18); supports compact, low-ESR designs |
| Inhibit-controlled sequencing | EN/INH pin enables synchronized power-up/down with microcontrollers or CAN wake signals without external logic |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
|
Use Scenario: Powers 32-bit MCU, CAN transceiver, and sensor interface in under-hood ECU exposed to 125°C ambient and load dump transients. IC Role / Device Role / Timing Role: Primary 5.0 V rail regulator with reverse/transient protection and thermal foldback during extended cranking. Use Value: Eliminates external TVS and reverse-blocking diode; maintains regulation down to 5.5 V input during cold-crank. |
Use Scenario: Supplies infotainment processor core voltage and USB PHY in door module with frequent sleep/wake cycles. IC Role / Device Role / Timing Role: Always-on LDO with microamp sleep current and fast enable/disable via CAN wake signal on INH pin. Use Value: Reduces system quiescent draw to <10 µA in sleep mode while supporting <100 µs wake latency. |
| Advanced Driver Assistance System (ADAS) | Electric Power Steering (EPS) |
|
Use Scenario: Powers radar SoC and high-speed ADC in front-end camera module subject to vibration and thermal cycling. IC Role / Device Role / Timing Role: Low-noise 5.0 V supply with ≥60 dB PSRR at 100 Hz to suppress alternator ripple from sensitive analog front-ends. Use Value: Prevents image artifacts caused by power supply ripple; stable output across −40°C to +105°C ambient. |
Use Scenario: Supplies motor controller gate drivers and position sensors in EPS column module with high EMI exposure. IC Role / Device Role / Timing Role: Fault-tolerant regulator with integrated short-circuit and thermal shutdown, reporting status via INH pin feedback. Use Value: Enables fail-safe torque reduction by disabling output during overtemperature events without software intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV4276ADT50RKG | DPAK-5 package (Case 175AA); higher RJA = 100.9°C/W (min pad) vs. 74.8°C/W for D2PAK | Suitable for lower-power BCM modules where thermal margin >20°C exists at 400 mA | Select when board space constraints favor smaller DPAK footprint and thermal load is ≤250 mA |
| TLV73350PDBVR | 300 mA max output; 250 mV dropout at 300 mA; no reverse voltage or transient protection | Limited to non-automotive, non-transient environments (e.g., industrial IoT gateway) | Choose only for cost-sensitive consumer applications where −42 V reverse and +45 V transient immunity are unnecessary |
Compared with NCV4276ADS50R4G, the DPAK variant trades thermal performance for footprint size, while the TLV73350PDBVR sacrifices automotive robustness for lower quiescent current - neither offers drop-in replacement due to package or protection gaps.
Availability
NCV4276ADS50R4G is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS cameras, and electric power steering systems requiring stable component supply under automotive temperature and transient stress conditions.
Supply support for NCV4276ADS50R4G 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 is a global semiconductor manufacturer specializing in energy-efficient, high-reliability components for automotive, industrial, and cloud power applications.
The NCV4276 family was designed specifically for harsh automotive environments - delivering robust voltage regulation with integrated reverse/transient protection, wide temperature operation, and AEC-Q100 compliance.
FAQ
What is the maximum input voltage the NCV4276ADS50R4G can withstand without damage?
The NCV4276ADS50R4G survives −42 V reverse voltage and +45 V peak transient input per ISO 7637-2, with functional operation guaranteed from 6.0 V to 28 V. These ratings are stress limits - sustained operation above 28 V is not recommended even if within survival range.
Does the NCV4276ADS50R4G require an external bypass capacitor on the INH pin?
No, the NCV4276ADS50R4G does not require an external capacitor on the INH pin. The inhibit input has internal filtering and draws only 5–20 µA; direct connection to MCU GPIO or CAN wake line is sufficient for reliable enable/disable control.
Can the NCV4276ADS50R4G operate with a 10 µF ceramic output capacitor instead of the recommended 22 µF?
Yes - Figure 6 confirms stable operation with 10 µF for 5.0 V output, provided ESR stays within the shaded "Stable Region" (0.01–1 Ω at 250 mA). Murata GRM31CR71C106KAC7 (10 µF, 1206, X7R) is validated for this use case.
What is the thermal resistance (RJA) of the NCV4276ADS50R4G in a standard layout?
For the D2PAK-5 package (DS suffix), RJA is 74.8°C/W on a 0.373 in² (241 mm²) 1 oz copper spreader board (Note 5), and 41.6°C/W on a 1.222 in² (788 mm²) board (Note 6). Layout must match these copper areas to achieve published thermal performance.
Is the NCV4276ADS50R4G pin-compatible with the NCV4276ADT50RKG?
No - although both are 5.0 V fixed-output variants, NCV4276ADS50R4G uses D2PAK-5 (Case 936A) while NCV4276ADT50RKG uses DPAK-5 (Case 175AA). Footprint, thermal pad layout, and RJA differ significantly; PCB redesign is required for substitution.
NCV4276ADS50R4G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 400mA
- Current - Quiescent (Iq):
- 200 µA
- Current - Supply (Max):
- 35 mA
- PSRR:
- 70dB (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:
- D2PAK-5
NCV4276ADS50R4G FAQ
1.How can I place an order for NCV4276ADS50R4G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV4276ADS50R4G 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 NCV4276ADS50R4G reliable?
The price and inventory of NCV4276ADS50R4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV4276ADS50R4G is usually 5 days.
3.What payment methods are accepted for NCV4276ADS50R4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV4276ADS50R4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV4276ADS50R4G?
NCV4276ADS50R4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV4276ADS50R4G 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 NCV4276ADS50R4G?
For technical support, including NCV4276ADS50R4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV4276ADS50R4G requirements.
6.How does Aetrix verify that NCV4276ADS50R4G is sourced from the original manufacturer or authorized distributors?
All NCV4276ADS50R4G 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 NCV4276ADS50R4G meets industry standards.
7.What is the process for return or replacement of NCV4276ADS50R4G?
All NCV4276ADS50R4G units undergo pre-shipment inspection (PSI). If there is an issue with NCV4276ADS50R4G, 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 NCV4276ADS50R4G part is unused and in its original packaging.
Return procedure for NCV4276ADS50R4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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