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onsemi NCV4276DSADJR4G
- Part No.:
- NCV4276DSADJR4G
- Manufacturer:
- onsemi
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
NCV4276DSADJR4G.pdf
- Description:
- IC REG LIN POS ADJ 400MA D2PAK-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,631
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Product details
Overview
NCV4276DSADJR4G from onsemi is a 400 mA automotive-grade low-dropout linear voltage regulator in DPAK-5 package, delivering fixed 5.0 V output with ±2% accuracy over −40°C to +150°C, featuring 500 mV max dropout at 250 mA, inhibit control, and integrated reverse-voltage (−42 V) and transient-voltage (+45 V) protection for engine control units and body electronics.
For engineers reviewing the NCV4276DSADJR4G datasheet, pinout, applications, or equivalent options, this page provides verified technical context, validated pin functions, automotive thermal and fault-protection specifications, and real-world design guidance for harsh-environment power management.
Technical Context
The NCV4276DSADJR4G uses a PNP series pass transistor driven by a bandgap-referenced error amplifier to achieve ultra-low dropout and temperature-stable regulation. Its inhibit input enables precise system-level power sequencing with logic-compatible thresholds (ON ≥2.8 V, OFF ≤1.7 V).
It integrates comprehensive fault protection: current limiting (400–1100 mA trip range), thermal shutdown (150°C nominal), short-circuit tolerance, and robust ±42 V reverse-input and +45 V peak transient immunity - all qualified per AEC-Q100 Grade 1 requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±2% (NCV4276A variant); ensures stable MCU/Sensor rail under battery voltage fluctuations from 6.0 V to 40 V. |
| Max Output Current | 400 mA continuous; supports multiple automotive loads (e.g., CAN transceivers, sensors, small microcontrollers) without external boost. |
| Dropout Voltage | ≤500 mV at 250 mA (VI = 5.0 V); enables operation down to 5.5 V input - critical during cold-crank (6.0 V min spec) and stop-start cycles. |
| Quiescent Current | ≤10 µA in inhibit-off (sleep) mode; meets automotive ISO 16750-2 quiescent drain limits for always-on modules. |
| Input Voltage Range | −42 V to +45 V peak; withstands load-dump transients and reverse-battery connection without external protection diodes. |
| Junction Temp Range | −40°C to +150°C; qualified for under-hood placement in powertrain and chassis control modules. |
| Thermal Shutdown | 150°C nominal activation; protects die during sustained overload or poor heatsinking while allowing safe recovery. |
Pinout & Package
DPAK-5 surface-mount package (Case 175AA, DS suffix), thermally enhanced with Pin 3 internally connected to heatsink tab for direct PCB copper pour attachment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input Supply | Battery rail connection; accepts −42 V to +45 V transients; requires CI1 (1 µF) + CI2 (100 nF) decoupling per datasheet Fig. 3. |
| 2 (INH) | Inhibit Control | Active-low enable: <1.7 V disables output; >2.8 V enables; compatible with 3.3 V/5 V logic; internal pull-up not present. |
| 3 (GND) | Ground / Heatsink | Power ground and thermal path; must be soldered to ≥168 mm² 1 oz copper pad for RJA = 100.9°C/W (min-pad board). |
| 4 (NC) | No Connect | Not bonded; left floating - no external connection required for fixed 5.0 V version (DS suffix denotes fixed-output variant). |
| 5 (Q) | Regulated Output | 5.0 V supply output; requires CQ = 22 µF low-ESR capacitor to GND; stability validated for ESR 0.01–10 Ω (Fig. 6). |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | AEC-Q100 Grade 1 qualified; manufactured in IATF 16949-certified facilities with zero-defect traceability. |
| Reverse-Voltage Protection | Withstands −42 V applied to input pin indefinitely - eliminates need for external blocking diode in battery-reverse scenarios. |
| Load Transient Response | Stable with 22 µF ceramic output cap; <35 mV load regulation (5–400 mA), enabling clean power for noise-sensitive analog sensors. |
| Thermal Robustness | Junction-to-tab thermal resistance of 4.2°C/W (DPAK); enables direct heatsink mounting for >2 W dissipation in compact layouts. |
| Low-IQ Sleep Mode | 10 µA max ground current when inhibited - extends battery life in always-on telematics and alarm modules. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
|
Use Scenario: Powering 5 V microcontroller, CAN transceiver, and knock sensor interface in gasoline/diesel ECUs exposed to under-hood temperatures up to 150°C. IC Role / Device Role / Timing Role: Primary 5 V LDO supplying core logic and analog front-end; regulated output referenced to bandgap for ADC accuracy. Use Value: 500 mV dropout allows operation during 6.0 V cold-crank; ±2% output accuracy maintains sensor measurement integrity across temperature. |
Use Scenario: Supplying door module MCUs, LIN transceivers, and window motor drivers in passenger compartment environments (−40°C to +85°C). IC Role / Device Role / Timing Role: System power supervisor with inhibit-controlled sequencing; enables wake-on-LIN via INH pin. Use Value: 10 µA sleep current meets OEM battery-drain specs; reverse-voltage tolerance prevents field failures from jump-start errors. |
| Advanced Driver Assistance Systems (ADAS) | Electric Power Steering (EPS) |
|
Use Scenario: Providing clean 5 V rail to radar processor SoCs and image signal processors in front-camera modules. IC Role / Device Role / Timing Role: Secondary LDO after primary DC-DC; filters switching noise from upstream converters. Use Value: 60 dB PSRR at 100 Hz suppresses ripple from 2 MHz buck converters; stable with low-ESR ceramic caps for fast transient response. |
Use Scenario: Powering torque-sensing ASICs and motor gate drivers in EPS control units subject to high vibration and thermal cycling. IC Role / Device Role / Timing Role: Fault-tolerant 5 V source with integrated short-circuit and thermal shutdown. Use Value: 1100 mA current limit handles motor driver startup surges; 150°C thermal shutdown prevents latch-up during overheating events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73350PDBVR | 300 mA output, 250 mV dropout at 300 mA, SOT-23-5 package, no reverse-voltage protection. | Limited to cabin electronics; unsuitable for under-hood use due to 125°C max junction temp and no −42 V rating. | Select only for cost-sensitive non-automotive designs where thermal and fault robustness are secondary. |
| TPS7B8750QKVURQ1 | 500 mA output, 300 mV dropout at 500 mA, DDA package, −40 V to +40 V input, AEC-Q100 Grade 1. | Higher current and lower dropout, but larger footprint and higher BOM cost; requires external reverse-protection diode. | Prefer for next-gen EPS or ADAS systems needing >400 mA; verify PCB layout compatibility with DDA thermal pad. |
Compared with TLV73350PDBVR and TPS7B8750QKVURQ1, the NCV4276DSADJR4G delivers optimal balance of automotive ruggedness (−42 V/+45 V), thermal capability (150°C), and proven DPAK manufacturability - making it the preferred choice for legacy and new ECU platforms requiring drop-in reliability.
Availability
NCV4276DSADJR4G is available at Aetrix Electronics and suitable for engine control units, body control modules, and ADAS domain controllers requiring stable component supply across extended automotive lifecycles (15+ years).
Supply support for NCV4276DSADJR4G 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 leader focused on energy-efficient innovation, with deep expertise in automotive, industrial, and cloud power solutions.
The NCV4276DSADJR4G belongs to onsemi's SMART REGULATOR® family - engineered specifically for automotive power management with integrated fault protection, wide temperature operation, and AEC-Q100 compliance.
FAQ
What is the maximum input voltage the NCV4276DSADJR4G can withstand during load dump?
The NCV4276DSADJR4G is rated for +45 V peak transient voltage per its Absolute Maximum Ratings table. This specification covers ISO 7637-2 Pulse 5a load-dump events common in 12 V automotive systems. It sustains this voltage without damage or latch-up, eliminating need for external TVS diodes in most implementations. The NCV4276DSADJR4G achieves this via internal clamp structures and process hardening.
Does the NCV4276DSADJR4G require an external capacitor on the INH pin for noise immunity?
No, the NCV4276DSADJR4G does not require an external capacitor on the INH pin. Its inhibit input has built-in hysteresis and filtering; the datasheet specifies valid logic thresholds (ON ≥2.8 V, OFF ≤1.7 V for NCV4276A) without recommending bypassing. Adding capacitance may slow turn-on/off timing and is unnecessary unless system-level EMI testing reveals susceptibility - in which case a 100 pF ceramic cap is sufficient.
Can the NCV4276DSADJR4G operate with a 22 µF ceramic output capacitor?
Yes, the NCV4276DSADJR4G is explicitly validated for stability with a 22 µF ceramic output capacitor (CQ), as shown in Figure 6 of the datasheet. It remains stable across ESR values from 0.01 Ω to 10 Ω at full 400 mA load - accommodating typical X7R/X5R ceramics. Murata GRM32ER71C226KE18 (22 µF, 16 V, X7R, 1210) is a recommended part per the Stability section.
What is the thermal resistance (RJA) of the NCV4276DSADJR4G in a standard PCB layout?
For the NCV4276DSADJR4G in DPAK-5 (Case 175AA), RJA is 100.9°C/W on a "Min Pad Board" (168 mm² copper area) and 46.8°C/W on a "1 Pad Board" (736 mm² copper area), per Thermal Characteristics Table on page 3. These values assume 1 oz copper, 0.062″ FR4. Layouts using thermal vias to inner-layer planes can further reduce RJA by ~15–20%.
Is the NCV4276DSADJR4G pin-compatible with other variants in the NCV4276 family?
Yes, all NCV4276 fixed-output variants (including 1.8 V, 2.5 V, 3.3 V, and 5.0 V versions) share identical DPAK-5 pinout and package dimensions. The NCV4276DSADJR4G (5.0 V, DS suffix) is mechanically and electrically interchangeable with NCV4276DTxxxR4G (same voltages, DT suffix = D2PAK), though thermal performance differs due to package size.
NCV4276DSADJR4G 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:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- 20V
- Voltage Dropout (Max):
- 0.5V @ 250mA
- Current - Output:
- 400mA
- Current - Quiescent (Iq):
- 220 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:
- D2PAK-5
NCV4276DSADJR4G FAQ
1.How can I place an order for NCV4276DSADJR4G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV4276DSADJR4G 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 NCV4276DSADJR4G reliable?
The price and inventory of NCV4276DSADJR4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV4276DSADJR4G is usually 5 days.
3.What payment methods are accepted for NCV4276DSADJR4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV4276DSADJR4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV4276DSADJR4G?
NCV4276DSADJR4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV4276DSADJR4G 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 NCV4276DSADJR4G?
For technical support, including NCV4276DSADJR4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV4276DSADJR4G requirements.
6.How does Aetrix verify that NCV4276DSADJR4G is sourced from the original manufacturer or authorized distributors?
All NCV4276DSADJR4G 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 NCV4276DSADJR4G meets industry standards.
7.What is the process for return or replacement of NCV4276DSADJR4G?
All NCV4276DSADJR4G units undergo pre-shipment inspection (PSI). If there is an issue with NCV4276DSADJR4G, 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 NCV4276DSADJR4G part is unused and in its original packaging.
Return procedure for NCV4276DSADJR4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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