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onsemi NCV2931ACD2TR4G
- Part No.:
- NCV2931ACD2TR4G
- Manufacturer:
- onsemi
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
NCV2931ACD2TR4G.pdf
- Description:
- IC REG LIN POS ADJ 100MA D2PAK-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,400
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Product details
Overview
NCV2931ACD2TR4G from onsemi is an automotive-grade adjustable-output LDO voltage regulator in D2PAK (TO-263) package, delivering up to 100 mA output current with ≤0.6 V dropout at full load, 60 V load dump protection, and ±2.5% output voltage accuracy over −40°C to +125°C. It features output inhibit control, reverse polarity protection (−50 V), and internal thermal shutdown - designed for engine control units and automotive body electronics.
For engineers reviewing the NCV2931ACD2TR4G datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q100 qualification, adjustable 3.0–24 V output range, low bias current (0.4 mA @ 10 mA load), and robust transient survivability in 12 V/24 V vehicle electrical systems.
Technical Context
The NCV2931ACD2TR4G implements a PNP pass transistor architecture with bandgap reference and error amplifier, enabling ultra-low dropout operation. Its output inhibit function uses a dedicated logic-level input (Vth(OI) = 2.15–3.25 V) to disable regulation without removing input power.
It integrates multiple automotive-specific protections: 60 V transient tolerance per ISO 7637-2 Pulse 5a, −50 V reverse battery immunity, mirror-image insertion tolerance, and thermal shutdown triggered at +150°C junction temperature. The device requires external output capacitance (≥22 µF, ESR ≤ 0.4 Ω) for stability across temperature and load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 100 mA maximum - supports microcontroller core rails and sensor interfaces without external boost. |
| Dropout Voltage | 0.16 V typical @ 100 mA - enables stable 3.3 V output from degraded 12 V battery (≥3.46 V input). |
| Reference Voltage Accuracy | ±2.5% over −40°C to +125°C - ensures precise programmable output despite under-hood thermal cycling. |
| Load Dump Protection | 60 V transient rating (≤100 ms) - survives alternator load dump events without external TVS diode. |
| Bias Current | 0.4 mA typical @ 10 mA load - extends battery life in always-on automotive modules (e.g., CAN wake-up receivers). |
| Operating Temperature | −40°C to +125°C ambient - qualified for engine compartment and transmission control unit mounting locations. |
| Output Inhibit Threshold | 2.15–3.25 V "On" threshold - compatible with 3.3 V MCU GPIOs for controlled power sequencing. |
Pinout & Package
D2PAK (TO-263-5) package with exposed thermal pad (pin 3 connected to output); heatsink surface electrically tied to pin 3 (output) per case outline 936A. Pin 1: Adjust; Pin 2: Output Inhibit; Pin 3: Ground; Pin 4: Input; Pin 5: Output.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Adjust | Connects to resistor divider to set output voltage; draws only 0.2 µA - minimizes divider current error. |
| 2 | Output Inhibit | Active-high logic input; pulls output to ground when <2.15 V, enabling MCU-controlled power gating. |
| 3 | Ground | Power and signal reference return; must be low-impedance path to minimize noise coupling into reference. |
| 4 | Input | Accepts 6.0–26 V DC input; withstands −50 V reverse transients and 60 V load dump spikes. |
| 5 | Output | Regulated adjustable output (3.0–24 V); also serves as thermal pad connection point for PCB heat sinking. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | AEC-Q100 Grade 1 qualified (−40°C to +125°C) with PPAP documentation support - meets OEM Tier-1 requirements. |
| Low Dropout Architecture | 0.16 V dropout @ 100 mA enables operation down to 3.46 V input for 3.3 V rail - critical during cold-crank conditions. |
| Integrated Transient Protection | No external TVS required for ISO 7637-2 Pulse 5a (60 V/100 ms) or reverse battery (−50 V) - reduces BOM count and board space. |
| Output Inhibit Control | Dedicated pin allows zero-power sleep mode in telematics modules without disconnecting input supply. |
| Stability Assurance | Guaranteed stable with ≥22 µF output capacitor (ESR ≤ 0.4 Ω) - eliminates need for complex compensation networks. |
Applications
| Engine Control Unit (ECU) Sensor Power | Body Control Module (BCM) Microcontroller Core |
|---|---|
Use Scenario: Powers crankshaft position sensor and knock sensor in gasoline direct injection engine. IC Role / Device Role / Timing Role: Provides clean, regulated 5.0 V supply with ripple rejection >60 dB at 120 Hz - rejects alternator noise. Use Value: Maintains sensor accuracy during 60 V load dump transients without brownout or reset. | Use Scenario: Supplies 3.3 V core voltage to ARM Cortex-M7 MCU in door module. IC Role / Device Role / Timing Role: Adjustable LDO with inhibit pin enables MCU-initiated power-down during vehicle sleep mode. Use Value: Reduces quiescent current to <1 µA in inhibit state - meets ISO 11898-2 standby current limits. |
| Advanced Driver Assistance Systems (ADAS) Camera Module | Electric Power Steering (EPS) Motor Controller Logic |
Use Scenario: Regulates 3.3 V supply for image signal processor and MIPI CSI-2 interface in rear-view camera. IC Role / Device Role / Timing Role: Delivers low-noise 140 µVrms output (10 Hz–100 kHz) - prevents image artifacts from power supply noise. Use Value: Eliminates need for additional ferrite beads or LC filters in space-constrained camera housing. | Use Scenario: Powers gate driver logic and current sense amplifiers in EPS motor control board. IC Role / Device Role / Timing Role: Withstands −50 V reverse polarity during battery jump-start - prevents latch-up or destruction. Use Value: Enables single-supply design without reverse-polarity protection MOSFET or diode - lowers system cost by $0.12. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCV8664CDT50RKG | Fixed 5.0 V output; no adjust/inhibit pins; 150 mA output; lower dropout (0.25 V @ 150 mA) | Not suitable for programmable voltage rails; lacks inhibit control for power sequencing | Select when fixed 5 V is sufficient and higher current is needed without adjust flexibility |
| TLV73312PDBVR | 300 mA output; 0.22 V dropout @ 300 mA; no load dump or reverse polarity protection; SOT-23-5 package | Unqualified for automotive; requires external TVS for 60 V transients; smaller footprint but lower ruggedness | Select for non-automotive industrial applications where size and cost outweigh transient robustness needs |
Compared with NCV2931ACD2TR4G, NCV8664CDT50RKG offers higher current but sacrifices adjustability and inhibit control, while TLV73312PDBVR provides greater current density in a smaller package but lacks AEC-Q100 qualification and integrated automotive protections.
Availability
NCV2931ACD2TR4G is available at Aetrix Electronics and suitable for automotive engine control, ADAS camera modules, and body electronics requiring stable component supply with AEC-Q100 compliance, extended temperature operation, and high transient immunity.
Supply support for NCV2931ACD2TR4G 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 supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCV2931 series is part of onsemi's automotive analog portfolio, engineered specifically for harsh-vehicle-environment power management - emphasizing load dump survival, reverse polarity immunity, and AEC-Q100 reliability across −40°C to +125°C.
FAQ
What is the maximum input voltage the NCV2931ACD2TR4G can withstand during load dump events?
The NCV2931ACD2TR4G is rated for 60 V transient input voltage (≤100 ms duration) per ISO 7637-2 Pulse 5a. This allows it to survive alternator load dump events without external protection components. Continuous input voltage must remain ≤40 V. The device automatically recovers regulation after the transient subsides, provided junction temperature stays below +150°C.
Does the NCV2931ACD2TR4G require an external output capacitor, and what are the stability requirements?
Yes, the NCV2931ACD2TR4G requires an external output capacitor for stability. Minimum recommended value is 22 µF with ESR ≤ 0.4 Ω. Electrolytic or tantalum capacitors meeting this impedance specification across −40°C to +125°C are acceptable. Operation below this |ZO| limit ensures stable regulation even at maximum load (100 mA) and minimum output voltage (3.0 V).
How does the output inhibit function work on the NCV2931ACD2TR4G, and what voltage thresholds trigger it?
The NCV2931ACD2TR4G output inhibit pin (pin 2) enables active-high logic control. Output turns "On" when voltage exceeds 2.15 V (typical) at 25°C and remains on until voltage drops below 1.90 V (typical). Output turns "Off" when voltage falls below 2.26 V (typical) and stays off until voltage rises above 2.50 V (typical). Hysteresis prevents chatter during slow-rising control signals.
What is the reference voltage accuracy of the NCV2931ACD2TR4G over temperature, and how does it affect output programming?
The NCV2931ACD2TR4G features a ±2.5% reference voltage (Vref = 1.20 V) over −40°C to +125°C. When used with standard resistor dividers, this translates to ±2.5% total output voltage error across the full 3.0–24 V range. For example, a 5.0 V output will vary between 4.875 V and 5.125 V over temperature - sufficient for most automotive MCU and sensor supply requirements.
Is the NCV2931ACD2TR4G pin-compatible with other devices in the LM2931/NCV2931 family?
No - the NCV2931ACD2TR4G uses a 5-pin D2PAK (TO-263-5) package with pinout: 1=Adjust, 2=Output Inhibit, 3=Ground, 4=Input, 5=Output. This differs from SOIC-8 (LM2931ACDR2G) and TO-220 (NCV2931ACTV) variants, which have different pin counts and assignments. Direct replacement requires PCB layout revision; functional equivalence exists but not mechanical compatibility.
NCV2931ACD2TR4G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 26V
- Voltage - Output (Min/Fixed):
- 2.7V
- Voltage - Output (Max):
- 29.5V
- Voltage Dropout (Max):
- 0.6V @ 100mA
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 1 mA
- Current - Supply (Max):
- 6 mA
- PSRR:
- -
- 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:
- D2PAK-3
NCV2931ACD2TR4G FAQ
1.How can I place an order for NCV2931ACD2TR4G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV2931ACD2TR4G 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 NCV2931ACD2TR4G reliable?
The price and inventory of NCV2931ACD2TR4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV2931ACD2TR4G is usually 5 days.
3.What payment methods are accepted for NCV2931ACD2TR4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV2931ACD2TR4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV2931ACD2TR4G?
NCV2931ACD2TR4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV2931ACD2TR4G 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 NCV2931ACD2TR4G?
For technical support, including NCV2931ACD2TR4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV2931ACD2TR4G requirements.
6.How does Aetrix verify that NCV2931ACD2TR4G is sourced from the original manufacturer or authorized distributors?
All NCV2931ACD2TR4G 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 NCV2931ACD2TR4G meets industry standards.
7.What is the process for return or replacement of NCV2931ACD2TR4G?
All NCV2931ACD2TR4G units undergo pre-shipment inspection (PSI). If there is an issue with NCV2931ACD2TR4G, 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 NCV2931ACD2TR4G part is unused and in its original packaging.
Return procedure for NCV2931ACD2TR4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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