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onsemi NCV2931AZ-5.0RAG
- Part No.:
- NCV2931AZ-5.0RAG
- Manufacturer:
- onsemi
- Package:
- TO-226-3, TO-92-3 Long Body, Formed Leads
- Datasheet:
-
NCV2931AZ-5.0RAG.pdf
- Description:
- IC REG LINEAR 5V 100MA TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,912
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Product details
Overview
NCV2931AZ-5.0RAG from onsemi is an automotive-grade, fixed-output 5.0 V low-dropout (LDO) linear voltage regulator in TO-92 package, delivering up to 100 mA output current with dropout voltage as low as 0.16 V at 100 mA and ±3.8% output voltage accuracy over −40 °C to +125 °C. It provides 60 V load dump protection and −50 V reverse transient immunity for engine control units and body electronics.
For engineers reviewing the NCV2931AZ-5.0RAG datasheet, pinout, applications, or equivalent options, key selection criteria include automotive AEC-Q100 qualification, TO-92 thermal performance (RJA = 178 °C/W), low bias current (0.4 mA typ. at 10 mA load), and integrated protection against line transients and reverse polarity.
Technical Context
The NCV2931AZ-5.0RAG employs a PNP pass transistor architecture enabling ultra-low dropout operation and inherent reverse-polarity blocking. Its internal circuitry integrates thermal shutdown, foldback current limiting, and overvoltage shutdown (29.5 V threshold) without requiring external components.
Designed for harsh automotive environments, it withstands mirror-image insertion during power-up and maintains regulation under 60 V/100 ms load dump transients. The device operates across input voltages from 6.0 V to 26 V while sustaining output stability with 100 µF output capacitance and ≤0.3 Ω ESR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±3.8% (guaranteed over −40 °C to +125 °C, 6–26 V input, ≤100 mA load) |
| Dropout Voltage | 0.16 V max at 100 mA (enables stable 5 V output down to 5.16 V input) |
| Load Dump Protection | 60 V peak for ≤100 ms (protects downstream circuits during alternator field decay) |
| Reverse Polarity Immunity | −50 V transient (prevents damage from battery misconnection) |
| Bias Current | 0.4 mA typical at 10 mA load (extends battery life in always-on vehicle modules) |
| Ripple Rejection | 60 dB min at 120 Hz (suppresses alternator ripple in 12 V systems) |
| Thermal Shutdown | Activates at +150 °C junction temperature (prevents thermal runaway) |
Pinout & Package
NCV2931AZ-5.0RAG uses the TO-92 (Case 29-10) package - a 3-pin through-hole plastic package with 1 W power dissipation capability and heatsink-compatible pin 2 (GND). Thermal resistance is RJA = 178 °C/W (free-air).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output | Regulated 5.0 V supply rail; requires ≥100 µF output capacitor with ≤0.3 Ω ESR for stability |
| 2 | Ground | Power and reference ground; electrically connected to heatsink tab for thermal conduction |
| 3 | Input | Unregulated input (6–26 V); must be bypassed with ≥0.1 µF ceramic capacitor if >4 inches from bulk filter |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 (−40 °C to +125 °C ambient), PPAP-capable, NCV prefix |
| Low dropout operation | 0.015 V typ. dropout at 10 mA enables use in low-voltage battery scenarios (e.g., cranking) |
| Integrated fault protection | Combines reverse polarity, load dump, overvoltage, thermal, and current limiting - no external protection needed |
| Pb-free packaging | RoHS-compliant TO-92 with matte tin lead finish; compatible with standard SnPb and lead-free reflow |
| Mirror-image insertion tolerance | Survives temporary reverse mounting during manual assembly without latch-up or damage |
Applications
| Engine Control Module (ECM) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powering microcontroller, CAN transceiver, and sensor interface circuitry in under-hood ECM units exposed to 12 V battery fluctuations and load dump events. IC Role / Device Role / Timing Role: Primary 5 V LDO regulator supplying critical logic rails; acts as system-level fault barrier. Use Value: Eliminates need for discrete TVS and reverse-polarity diodes, reducing BOM count by ≥3 components while meeting ISO 7637-2 Pulse 5a requirements. | Use Scenario: Providing stable 5 V supply to door module MCUs and LIN transceivers in passenger compartment BCMs operating at extended temperature range. IC Role / Device Role / Timing Role: Always-on regulated supply with <0.4 mA quiescent current, enabling low-power sleep mode compliance. Use Value: Enables >10-year battery-backed memory retention in keyless entry systems without compromising startup reliability after deep discharge. |
| Advanced Driver Assistance Systems (ADAS) Camera | Telematics Control Unit (TCU) |
Use Scenario: Regulating power to image signal processor and MIPI interface in rear-view camera modules mounted near exhaust or bumper. IC Role / Device Role / Timing Role: Input-filtered 5 V source with high PSRR (>60 dB @ 120 Hz) to suppress alternator noise coupling into analog video path. Use Value: Prevents visible ripple artifacts in live video feed during engine idle or acceleration, satisfying OEM image quality specs. | Use Scenario: Supplying 5 V to cellular modem, GNSS receiver, and secure element in vehicle telematics gateways subject to cold-cranking (5.5 V min) and jump-start (28 V max). IC Role / Device Role / Timing Role: Robust front-end regulator handling wide input excursions while maintaining clean 5 V for RF-sensitive ICs. Use Value: Guarantees uninterrupted LTE/GNSS operation during battery replacement or roadside assistance without modem reset or GPS reacquisition delay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8664CDT50RKG | Higher 150 mA output, lower 0.12 V dropout at 100 mA, DPAK package (RJA = 92 °C/W) | Better thermal performance in high-ambient PCB layouts; requires different footprint and reflow profile | Select when >100 mA load or >85 °C board temperature is expected |
| TLV73350PDQNR | Lower 300 mA output, 0.22 V dropout at 300 mA, SOT-23 package, no load dump protection | Lacks automotive transients immunity; suitable only for non-safety-critical interior modules | Select only for cost-sensitive cabin infotainment accessories with external protection |
Compared with NCV2931AZ-5.0RAG, NCV8664CDT50RKG offers higher current and better thermal margin but requires PCB redesign, while TLV73350PDQNR reduces size and cost but forfeits load dump and reverse polarity hardening essential for under-hood deployment.
Availability
NCV2931AZ-5.0RAG is available at Aetrix Electronics and suitable for automotive engine control, body electronics, ADAS camera modules, and telematics units requiring stable component supply with full AEC-Q100 traceability and long-term lifecycle support.
Supply support for NCV2931AZ-5.0RAG 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 (Nasdaq: ON) is a global semiconductor leader delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCV2931 series is part of onsemi's automotive power management portfolio, engineered specifically for harsh-temperature, high-transient environments in engine bays and chassis-mounted ECUs where reliability under load dump and reverse battery conditions is non-negotiable.
FAQ
What is the maximum input voltage the NCV2931AZ-5.0RAG can withstand during load dump events?
The NCV2931AZ-5.0RAG is rated for 60 V transient input voltage for durations ≤100 ms per ISO 7637-2 Pulse 5a. This allows it to survive alternator field decay surges without external clamping. Continuous DC input must remain ≤40 V. The device automatically recovers regulation once the transient subsides, and no latch-up occurs. NCV2931AZ-5.0RAG integrates this protection natively - no external TVS diode is required for basic compliance.
Does the NCV2931AZ-5.0RAG require an external output capacitor, and what are the stability requirements?
Yes, the NCV2931AZ-5.0RAG is not internally compensated and mandates an external output capacitor for loop stability. A minimum 100 µF electrolytic or tantalum capacitor with ESR ≤0.3 Ω is required. For low-temperature operation (<−30 °C), solid tantalum is preferred due to stable ESR. NCV2931AZ-5.0RAG becomes unstable with capacitors <10 µF or ESR >0.6 Ω, risking oscillation that degrades output noise and regulation.
How does the NCV2931AZ-5.0RAG behave during reverse battery connection?
When subjected to −50 V reverse input (simulating battery misconnection), the NCV2931AZ-5.0RAG limits reverse output voltage to −0.3 V maximum, preventing damage to downstream logic. No reverse current flows through the device, and it remains undamaged. Upon correction of polarity, NCV2931AZ-5.0RAG resumes normal regulation without reset or latch-up - a key requirement for service bay diagnostics and field repairs.
What is the thermal performance of the NCV2931AZ-5.0RAG in free-air conditions?
In free-air mounting, the NCV2931AZ-5.0RAG has a junction-to-ambient thermal resistance (RJA) of 178 °C/W. At 100 mA output and 14 V input, power dissipation is ~0.9 W, resulting in ~160 °C junction rise above ambient - triggering thermal shutdown. To sustain full load, PCB copper area or heatsinking on pin 2 (GND) is mandatory. NCV2931AZ-5.0RAG's safe operating area is defined up to +150 °C junction temperature.
Is the NCV2931AZ-5.0RAG pin-compatible with standard LM2931Z-5.0 variants?
No - while both use TO-92 packages, NCV2931AZ-5.0RAG and LM2931Z-5.0 share identical pinout (Pin 1 = Output, Pin 2 = GND, Pin 3 = Input), but differ in qualification and performance. NCV2931AZ-5.0RAG is AEC-Q100 qualified, specified over −40 °C to +125 °C, and features tighter 3.8% output tolerance versus 5.0% for LM2931Z-5.0. NCV2931AZ-5.0RAG also guarantees load dump immunity; LM2931Z-5.0 does not. Substitution requires validation of transient robustness.
NCV2931AZ-5.0RAG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 Long Body, Formed Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 26V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 100mA
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 1 mA
- Current - Supply (Max):
- 30 mA
- PSRR:
- 90dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92 (TO-226)
NCV2931AZ-5.0RAG FAQ
1.How can I place an order for NCV2931AZ-5.0RAG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV2931AZ-5.0RAG 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 NCV2931AZ-5.0RAG reliable?
The price and inventory of NCV2931AZ-5.0RAG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV2931AZ-5.0RAG is usually 5 days.
3.What payment methods are accepted for NCV2931AZ-5.0RAG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV2931AZ-5.0RAG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV2931AZ-5.0RAG?
NCV2931AZ-5.0RAG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV2931AZ-5.0RAG 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 NCV2931AZ-5.0RAG?
For technical support, including NCV2931AZ-5.0RAG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV2931AZ-5.0RAG requirements.
6.How does Aetrix verify that NCV2931AZ-5.0RAG is sourced from the original manufacturer or authorized distributors?
All NCV2931AZ-5.0RAG 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 NCV2931AZ-5.0RAG meets industry standards.
7.What is the process for return or replacement of NCV2931AZ-5.0RAG?
All NCV2931AZ-5.0RAG units undergo pre-shipment inspection (PSI). If there is an issue with NCV2931AZ-5.0RAG, 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 NCV2931AZ-5.0RAG part is unused and in its original packaging.
Return procedure for NCV2931AZ-5.0RAG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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