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onsemi NCV2931DT-5.0RKG
- Part No.:
- NCV2931DT-5.0RKG
- Manufacturer:
- onsemi
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
NCV2931DT-5.0RKG.pdf
- Description:
- IC REG LINEAR 5V 100MA DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:3,321
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Product details
Overview
NCV2931DT-5.0RKG from onsemi is an automotive-grade fixed-output 5.0 V low-dropout (LDO) linear voltage regulator in DPAK (TO-252) package, rated for 100 mA output current, 60 V load dump protection, −50 V reverse transient tolerance, and dropout voltage of 0.16 V at 100 mA. It delivers stable regulation in harsh automotive environments including engine control units and body electronics.
For engineers reviewing the NCV2931DT-5.0RKG datasheet, pinout, applications, or equivalent options, key selection criteria include AEC-Q100 qualification, 5.0 V ±3.8% output accuracy over −40 °C to +125 °C, thermal shutdown, internal current limiting, and compatibility with electrolytic/tantalum output capacitors per stability guidelines.
Technical Context
The NCV2931DT-5.0RKG employs a PNP pass transistor architecture enabling ultra-low dropout (0.16 V @ 100 mA) and high input transient survivability. Its internal circuitry integrates reverse polarity protection, overvoltage shutdown (29.5 V threshold), and mirror-image insertion tolerance - critical for 12 V/24 V automotive battery systems subject to jump-starts and load dump events.
Unlike standard LDOs, it features dedicated bias current optimization (0.4 mA typical @ 10 mA load) and ripple rejection ≥60 dB at 120 Hz, supporting stable operation under noisy alternator ripple. Output stability requires external capacitor with |ZO| ≤ 0.4 Ω across temperature, validated for 10–100 µF electrolytic or solid tantalum types.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±3.8% (guaranteed over −40 °C to +125 °C; enables direct replacement of legacy 5 V logic rails) |
| Max Output Current | 100 mA (supports microcontroller peripherals, CAN transceivers, and sensor interfaces without external boost) |
| Dropout Voltage | 0.16 V @ 100 mA (enables regulation down to 5.16 V input; critical for cold-crank operation) |
| Load Dump Protection | 60 V transient (withstands ISO 7637-2 Pulse 5a without external clamping) |
| Reverse Polarity Tolerance | −50 V (survives accidental battery reversal during service) |
| Thermal Shutdown | Active at +150 °C junction (prevents latch-up during sustained overload or poor heatsinking) |
| Ripple Rejection | ≥60 dB @ 120 Hz (suppresses alternator ripple to <1 mVrms on 5 V rail) |
Pinout & Package
DPAK (TO-252) surface-mount package with exposed thermal pad (Case 369C); heatsink surface electrically connected to Pin 2 (GND). Designed for PCB copper area thermal management per Figure 25.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input | Accepts 6.0–26 V DC input; withstands 60 V transients and −50 V reverse polarity |
| 2 | Ground | Power and signal reference; tied to exposed thermal pad for heat dissipation |
| 3 | Output | Regulated 5.0 V supply; requires ≥10 µF output capacitor with ESR ≤ 0.3 Ω for stability |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Validated for automotive applications per Grade 1 (−40 °C to +125 °C ambient) |
| Low Bias Current | 0.4 mA typical @ 10 mA load - extends battery life in always-on modules |
| Internal Current Limiting | Self-protecting against short-circuit faults without external foldback circuitry |
| Output Noise | 700 µVrms (10 Hz–100 kHz) - suitable for analog sensor front-ends and ADC references |
| Long-Term Stability | 20 mV/kHR - ensures minimal drift over 10+ year vehicle lifetime |
Applications
| Engine Control Unit (ECU) Power | Body Control Module (BCM) |
|---|---|
Use Scenario: Supplies 5 V to microcontroller, CAN transceiver, and analog sensors in gasoline/diesel ECUs exposed to cold crank (5.5 V min) and load dump (60 V). IC Role / Device Role / Timing Role: Primary 5 V LDO regulator with fault resilience; replaces discrete protection + regulation solutions. Use Value: Eliminates need for external TVS diodes and series FETs while meeting ISO 16750-2 electrical stress requirements. | Use Scenario: Powers door lock actuators, interior lighting controllers, and LIN transceivers in BCMs operating across full automotive temperature range. IC Role / Device Role / Timing Role: System-level 5 V supply with reverse polarity and thermal fault immunity. Use Value: Reduces BOM count by integrating protection functions; supports PPAP-compliant production with traceable lot data. |
| Advanced Driver Assistance Systems (ADAS) Camera | Telematics Control Unit (TCU) |
Use Scenario: Provides clean 5 V rail to image sensor and ISP in rear-view or surround-view cameras mounted near hot exhaust zones. IC Role / Device Role / Timing Role: Low-noise, thermally robust LDO ensuring stable pixel clocking and analog signal integrity. Use Value: Maintains <1 LSB noise floor in 12-bit ADCs; operates reliably at 125 °C junction temperature. | Use Scenario: Powers cellular modem, GNSS receiver, and secure boot controller in TCUs requiring continuous connectivity during ignition-off states. IC Role / Device Role / Timing Role: Always-on 5 V regulator with ultra-low bias current and load dump survival. Use Value: Enables >10-year battery-backed operation in sleep mode; eliminates wake-up failures due to voltage sag. |
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, but only 40 V load dump rating | Suitable for less severe transients; lacks −50 V reverse polarity rating | Select when higher current and lower dropout outweigh need for full ISO 7637-2 Pulse 5a compliance |
| TLV73350PDBVR | 300 mA output, 0.22 V dropout, no automotive qualification or load dump protection | Consumer/industrial use only; requires external TVS and reverse protection | Choose only for non-automotive designs where cost and size are prioritized over ruggedness |
Compared with NCV2931DT-5.0RKG, NCV8664CDT50RKG offers higher current headroom but reduced transient immunity, while TLV73350PDBVR trades automotive reliability for compactness and cost - making NCV2931DT-5.0RKG the sole choice for safety-critical, unclamped automotive 5 V rails.
Availability
NCV2931DT-5.0RKG is available at Aetrix Electronics and suitable for automotive power management, engine control unit (ECU) design, and body electronics requiring stable component supply across extended temperature and transient conditions.
Supply support for NCV2931DT-5.0RKG 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, analog, sensor, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.
The NCV2931DT-5.0RKG belongs to the NCV2931 automotive LDO series, engineered specifically to replace discrete protection + regulation circuits in 12 V/24 V vehicle electrical systems while meeting AEC-Q100 Grade 1 and ISO 16750-2 requirements.
FAQ
What is the maximum input voltage the NCV2931DT-5.0RKG can withstand continuously?
The NCV2931DT-5.0RKG supports continuous input voltages up to 40 V DC. This rating allows reliable operation across 24 V commercial vehicle systems and accommodates nominal 12 V battery variations without derating. Transient inputs up to 60 V (≤100 ms) are also supported per ISO 7637-2 Pulse 5a test profiles.
Does the NCV2931DT-5.0RKG require an external output capacitor, and what type is recommended?
Yes, the NCV2931DT-5.0RKG requires an external output capacitor for stability. onsemi specifies ≥10 µF with ESR ≤ 0.3 Ω; 100 µF electrolytic or solid tantalum capacitors are validated per Figure 22 and Figure 23. Ceramic capacitors alone are not recommended due to insufficient ESR for phase margin control.
Is the NCV2931DT-5.0RKG pin-compatible with other packages in the LM2931/NCV2931 family?
No - the NCV2931DT-5.0RKG uses the 3-pin DPAK (TO-252) package with Pin 1=Input, Pin 2=GND, Pin 3=Output. TO-220 (T suffix) and SOIC-8 (D suffix) variants have different pinouts and footprints; direct PCB replacement requires layout revision.
What is the output voltage accuracy of the NCV2931DT-5.0RKG over temperature?
The NCV2931DT-5.0RKG guarantees 5.0 V output within ±3.8% over the full operating range of −40 °C to +125 °C ambient. At 25 °C, typical accuracy is ±2.5%, and line/load regulation contribute ≤30 mV total deviation under worst-case input (6–26 V) and load (0–100 mA) conditions.
How does the NCV2931DT-5.0RKG handle reverse battery connection?
The NCV2931DT-5.0RKG withstands −50 V reverse polarity transients (1.0% duty cycle, ≤100 ms) without damage or latch-up. During reverse connection, output voltage remains clamped to −0.3 V (typical), protecting downstream 5 V logic. This eliminates need for external series diodes or MOSFET-based reverse protection circuits.
NCV2931DT-5.0RKG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- 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:
- DPAK
NCV2931DT-5.0RKG FAQ
1.How can I place an order for NCV2931DT-5.0RKG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV2931DT-5.0RKG 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 NCV2931DT-5.0RKG reliable?
The price and inventory of NCV2931DT-5.0RKG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV2931DT-5.0RKG is usually 5 days.
3.What payment methods are accepted for NCV2931DT-5.0RKG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV2931DT-5.0RKG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV2931DT-5.0RKG?
NCV2931DT-5.0RKG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV2931DT-5.0RKG 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 NCV2931DT-5.0RKG?
For technical support, including NCV2931DT-5.0RKG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV2931DT-5.0RKG requirements.
6.How does Aetrix verify that NCV2931DT-5.0RKG is sourced from the original manufacturer or authorized distributors?
All NCV2931DT-5.0RKG 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 NCV2931DT-5.0RKG meets industry standards.
7.What is the process for return or replacement of NCV2931DT-5.0RKG?
All NCV2931DT-5.0RKG units undergo pre-shipment inspection (PSI). If there is an issue with NCV2931DT-5.0RKG, 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 NCV2931DT-5.0RKG part is unused and in its original packaging.
Return procedure for NCV2931DT-5.0RKG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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