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onsemi NCV2931AD-5.0R2
- Part No.:
- NCV2931AD-5.0R2
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
NCV2931AD-5.0R2.pdf
- Description:
- IC REG LINEAR 5V 100MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,680
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Product details
Overview
NCV2931AD-5.0R2 from onsemi is an automotive-grade fixed-output 5.0 V low-dropout (LDO) linear voltage regulator in SOIC-8 package, delivering ≥100 mA output current with dropout voltage as low as 0.015 V at 10 mA and 0.16 V at 100 mA, featuring 60 V load dump protection and −50 V reverse transient tolerance for under-hood automotive power supply applications.
For engineers reviewing the NCV2931AD-5.0R2 datasheet, pinout, applications, or equivalent options, key selection considerations include its AEC-Q100 qualification, ±3.8% output voltage tolerance over −40 °C to +125 °C, internal current limiting with thermal shutdown, and SOIC-8 footprint compatibility with board-level ESD robustness and ripple rejection of 60–90 dB at 120 Hz.
Technical Context
The NCV2931AD-5.0R2 employs a PNP pass transistor architecture enabling ultra-low dropout operation and inherent reverse-polarity fault resilience. Its internal reference and error amplifier maintain regulation across wide input ranges (6.0 V to 26 V), while integrated protection circuitry actively clamps transients during load dump events up to 60 V and withstands −50 V reverse battery conditions without external components.
Designed for automotive environments, it incorporates mirror-image insertion tolerance, thermal shutdown activation at +150 °C junction temperature, and bias current as low as 0.4 mA at 10 mA load - enabling extended battery life in always-on vehicle subsystems such as body control modules and sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±3.8% (4.75–5.25 V at 25 °C; 4.50–5.50 V over full −40 °C to +125 °C range) |
| Dropout Voltage | 0.015 V @ 10 mA / 0.16 V @ 100 mA - enables stable 5 V output even with input as low as 5.16 V |
| Load Current | ≥100 mA continuous - supports microcontrollers, CAN transceivers, and analog sensors without external boosting |
| Input Voltage Range | 6.0 V to 26 V continuous; survives 60 V/100 ms transients and −50 V reverse polarity - eliminates need for external TVS or diode protection |
| Ripple Rejection | 60–90 dB @ 120 Hz - suppresses alternator ripple and switching noise in 12 V vehicle systems |
| Bias Current | 0.4 mA typical @ 10 mA load - minimizes quiescent power draw in sleep-mode automotive ECUs |
| Thermal Shutdown | Activates at +150 °C junction temperature - prevents damage during sustained overload or poor heatsinking |
Pinout & Package
NCV2931AD-5.0R2 is housed in a Pb-free SOIC-8 (Case 751) surface-mount package with standard 1.27 mm pitch and exposed pad for thermal enhancement. Pin 1 is Input, Pin 2 is Ground, Pin 3 is Output, Pin 4 is Ground, Pin 5 is Output, Pin 6 is Ground, Pin 7 is Input, Pin 8 is Ground - dual-input/dual-output configuration improves current sharing and reduces trace inductance in high-noise automotive layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7 | Input (VIN) | Dual VIN pins reduce series resistance and inductance; must be decoupled locally with ≥0.1 µF ceramic capacitor |
| 2, 4, 6, 8 | Ground (GND) | Four GND pins provide low-impedance return path and improve PSRR; require solid ground plane connection |
| 3, 5 | Output (VOUT) | Dual VOUT pins support higher current delivery and lower output impedance; connect directly to load capacitance |
Key Features
| Feature | Design Value |
|---|---|
| 60 V Load Dump Protection | Withstands ISO 7637-2 Pulse 5a transients without external clamping - reduces BOM count and PCB area |
| −50 V Reverse Polarity Tolerance | Operates safely after accidental battery reversal - eliminates need for series blocking diode and associated 0.3–0.7 V drop |
| AEC-Q100 Qualified | Qualified to Grade 1 (−40 °C to +125 °C) with PPAP capability - meets OEM requirements for engine bay and chassis-mounted modules |
| Low Dropout Architecture | 0.16 V dropout @ 100 mA enables use with degraded 12 V batteries down to ~5.2 V - critical for cold-crank operation |
| Internal Thermal Shutdown | Auto-recovery after cooldown - ensures system resilience during intermittent overloads without firmware intervention |
Applications
| Body Control Module (BCM) | Automotive Camera Power Supply |
|---|---|
Use Scenario: Powering microcontroller, LIN transceiver, and door lock actuators in centralized vehicle body electronics. IC Role / Device Role / Timing Role: Primary 5 V LDO supplying logic rails with transient immunity during jump-starts and load dumps. Use Value: Eliminates need for discrete TVS and reverse-protection diodes, reducing solution size by >30% and improving startup reliability below 6 V battery voltage. | Use Scenario: Stable 5 V rail for CMOS image sensor, ISP, and USB interface in rear-view or surround-view camera modules. IC Role / Device Role / Timing Role: Low-noise, high-PSRR voltage source ensuring clean pixel clocking and analog signal integrity. Use Value: 90 dB ripple rejection at 120 Hz suppresses alternator noise, preventing visible banding artifacts in video output. |
| Telematics Control Unit (TCU) | Occupant Detection System |
Use Scenario: Always-on 5 V supply for cellular modem, GNSS receiver, and secure element in connected car gateways. IC Role / Device Role / Timing Role: Ultra-low-quiescent LDO maintaining regulation during vehicle sleep mode with <1 µA standby current via external enable control. Use Value: 0.4 mA bias current extends battery backup runtime beyond 72 hours during disconnect scenarios. | Use Scenario: Powering capacitive or infrared occupant detection sensors and signal conditioning ASICs in smart airbag systems. IC Role / Device Role / Timing Role: Safety-critical regulated supply with guaranteed operation under −40 °C cold soak and +125 °C under-dash thermal stress. Use Value: AEC-Q100 Grade 1 qualification and 150 °C thermal shutdown ensure functional safety compliance per ISO 26262 ASIL-B requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8664BDT50RKG | Higher 250 mA output, 300 mV dropout @ 250 mA, SO-8 package, ±2% accuracy | Supports higher-current loads (e.g., multi-sensor hubs); less suitable for ultra-low-dropout edge cases | Select when >150 mA load current or tighter voltage accuracy is required; verify thermal derating at 125 °C ambient |
| TLV73350PDBVR | Lower 300 mA output, 130 mV dropout @ 300 mA, SOT-23-5 package, ±1% accuracy, no load dump rating | Not AEC-Q100 qualified; lacks 60 V transient protection - requires external TVS for automotive use | Use only in non-automotive industrial or consumer applications where cost and size outweigh transient robustness needs |
Compared with NCV2931AD-5.0R2, NCV8664BDT50RKG offers higher current and accuracy but trades off dropout performance, while TLV73350PDBVR provides compact size and precision but omits automotive-grade fault protection - making NCV2931AD-5.0R2 uniquely suited for cost-sensitive, space-constrained under-hood LDO applications requiring native load dump resilience.
Availability
NCV2931AD-5.0R2 is available at Aetrix Electronics and suitable for automotive body electronics, telematics gateways, ADAS camera modules, and occupant sensing systems requiring stable component supply across extended temperature and transient-voltage conditions.
Supply support for NCV2931AD-5.0R2 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, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCV2931 series belongs to onsemi's automotive-qualified analog power portfolio, designed specifically to replace legacy 78xx regulators in harsh-temperature, high-transient automotive environments while meeting AEC-Q100 and ISO 7637-2 compliance without external protection components.
FAQ
What is the maximum input voltage the NCV2931AD-5.0R2 can withstand continuously?
The NCV2931AD-5.0R2 supports continuous input voltages up to 40 V DC. It also withstands transient input voltages of 60 V for ≤100 ms and −50 V reverse polarity transients - critical for surviving ISO 7637-2 Pulse 5a load dump events in 12 V automotive systems without external protection circuitry.
Does the NCV2931AD-5.0R2 require an external output capacitor for stability?
Yes, the NCV2931AD-5.0R2 is not internally compensated and requires an external output capacitor. A minimum 100 µF electrolytic or tantalum capacitor with ESR ≤0.3 Ω is recommended. Stability is verified across −40 °C to +125 °C, and operation below 10 µF is not advised per onsemi's Figure 22 and Application Information section.
Is the NCV2931AD-5.0R2 pin-compatible with standard LM2931-5.0 variants?
No - the NCV2931AD-5.0R2 uses an SOIC-8 package with dual-input/dual-output pin configuration (Pins 1&7 = VIN, Pins 3&5 = VOUT, Pins 2,4,6,8 = GND), unlike the 3-pin TO-220 or TO-92 versions. It is not pin-compatible with LM2931AD-5.0 in SOIC-8 (which uses single-VIN/single-VOUT topology); layout redesign is required for migration.
What is the output voltage tolerance of the NCV2931AD-5.0R2 over temperature?
The NCV2931AD-5.0R2 has a guaranteed output voltage tolerance of ±3.8% over the full operating ambient temperature range of −40 °C to +125 °C, corresponding to 4.50 V to 5.50 V. At 25 °C, the tighter tolerance is ±3.8% (4.75–5.25 V), matching the "D" grade designation in the ordering table.
How does the NCV2931AD-5.0R2 handle reverse battery connection?
The NCV2931AD-5.0R2 withstands −50 V reverse polarity input transients (1.0% duty cycle, ≤100 ms) without damage or latch-up. During reverse connection, output voltage remains clamped to −0.3 V maximum, protecting downstream circuitry. This eliminates the need for an external series Schottky diode and its associated forward voltage drop and power loss.
NCV2931AD-5.0R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
NCV2931AD-5.0R2 FAQ
1.How can I place an order for NCV2931AD-5.0R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV2931AD-5.0R2 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 NCV2931AD-5.0R2 reliable?
The price and inventory of NCV2931AD-5.0R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV2931AD-5.0R2 is usually 5 days.
3.What payment methods are accepted for NCV2931AD-5.0R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV2931AD-5.0R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV2931AD-5.0R2?
NCV2931AD-5.0R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV2931AD-5.0R2 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 NCV2931AD-5.0R2?
For technical support, including NCV2931AD-5.0R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV2931AD-5.0R2 requirements.
6.How does Aetrix verify that NCV2931AD-5.0R2 is sourced from the original manufacturer or authorized distributors?
All NCV2931AD-5.0R2 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 NCV2931AD-5.0R2 meets industry standards.
7.What is the process for return or replacement of NCV2931AD-5.0R2?
All NCV2931AD-5.0R2 units undergo pre-shipment inspection (PSI). If there is an issue with NCV2931AD-5.0R2, 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 NCV2931AD-5.0R2 part is unused and in its original packaging.
Return procedure for NCV2931AD-5.0R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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