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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

onsemi NCV2931AZ-5.0G

Name: NCV2931AZ-5.0G
Brand: onsemi
SKU: NCV2931AZ-5.0G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NCV2931AZ-5.0G

Manufacturer:: onsemi

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: TO-226-3, TO-92-3 Long Body

Datasheet:: NCV2931AZ-5.0G.pdf

Description:: IC REG LINEAR 5V 100MA TO92-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

NCV2931AZ-5.0G 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 tolerance 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-5.0G datasheet, pinout, applications, or equivalent options, key selection criteria include automotive AEC-Q100 qualification, TO-92 thermal performance (R_JA = 178 °C/W), low bias current (0.4 mA typical at 10 mA load), and integrated protection against mirror-image insertion and thermal runaway.

Technical Context

The NCV2931AZ-5.0G employs a PNP pass transistor architecture enabling ultra-low dropout operation and inherent reverse-polarity blocking without external diodes. Its internal bandgap reference and error amplifier maintain regulation under wide input transients (60 V/100 ms), while thermal shutdown and foldback current limiting prevent damage during sustained overload.

Unlike standard LDOs, it integrates dedicated fault-handling circuitry: overvoltage shutdown triggers at 26–40 V, reverse polarity input yields only −0.3 V at output, and bias current remains stable (0.4–1.0 mA) across full temperature range - critical for cold-cranking battery systems where input may dip to 4.5 V.

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 −40 °C to +125 °C)
Max Output Current	100 mA continuous - sufficient for microcontroller cores, CAN transceivers, and sensor signal chains
Dropout Voltage	0.16 V typical at 100 mA - enables regulation down to 5.16 V input, supporting start-stop battery profiles
Input Voltage Range	6.0 V to 26 V continuous; withstands 60 V/100 ms load dump and −50 V reverse transients
Bias Current	0.4 mA typical at 10 mA load and full temperature range - extends battery life in always-on modules
Thermal Resistance	R_JA = 178 °C/W (TO-92) - requires minimal copper area for 100 mA operation at 125 °C ambient
Ripple Rejection	60 dB minimum at 120 Hz - suppresses alternator ripple in automotive power rails

Pinout & Package

NCV2931AZ-5.0G uses TO-92 package (Case 29-10), with leads bent or straight per ordering option. Pin 1 is Output, Pin 2 is Ground, Pin 3 is Input - matching standard three-terminal regulator layout for drop-in replacement in legacy designs.

Pin/Terminal	Circuit Role	Design Meaning
1	Output	Regulated 5.0 V supply node; connects to local decoupling capacitor and load
2	Ground	Reference return path; must be low-impedance connection to system ground plane
3	Input	Unregulated input (6–26 V); requires ≥0.1 μF bypass capacitor if >4″ from bulk filter

Key Features

Feature	Design Value
Automotive qualification	AEC-Q100 Grade 1 (−40 °C to +125 °C junction), PPAP-capable - meets OEM requirements for powertrain and chassis modules
Load dump protection	Withstands 60 V transients ≤100 ms - eliminates need for external TVS in 12 V battery systems
Reverse polarity immunity	Outputs −0.3 V (not destructive) when input is −15 V - prevents latch-up during jump-start errors
Low dropout architecture	0.015 V dropout at 10 mA - supports operation during cranking when battery drops to 6 V
Thermal fault management	Internal thermal shutdown + foldback current limiting - protects PCB traces and solder joints during sustained overload

Applications

Engine Control Unit (ECU) Power	Body Control Module (BCM)
Use Scenario: Supplies 5.0 V to MCU, EEPROM, and analog front-end in gasoline/diesel ECUs exposed to load dump and cold cranking. IC Role / Device Role / Timing Role: Primary post-regulator for safety-critical logic and sensor interfaces. Use Value: Maintains regulation at 5.16 V input during cranking; survives 60 V transients without external clamping.	Use Scenario: Powers door lock actuators, lighting drivers, and LIN transceivers in vehicle body networks. IC Role / Device Role / Timing Role: Local 5 V rail generator with reverse-polarity fault containment. Use Value: Prevents system latch-up during incorrect battery connection; bias current <1.0 mA extends standby battery life.
Advanced Driver Assistance Systems (ADAS) Sensor Hub	Telematics Control Unit (TCU)
Use Scenario: Provides clean 5.0 V to radar MMIC biasing and camera ISP power domains in ADAS domain controllers. IC Role / Device Role / Timing Role: Low-noise, high-PSRR LDO for analog-sensitive subsystems. Use Value: 60 dB ripple rejection at 120 Hz suppresses alternator noise; 700 µV_rms output noise avoids ADC quantization errors.	Use Scenario: Powers cellular modem baseband, GNSS receiver, and secure element in connected vehicle telematics units. IC Role / Device Role / Timing Role: AEC-Q100-compliant primary regulator for always-on communication subsystems. Use Value: Long-term stability of 20 mV/kHR ensures accurate voltage reference over 15-year vehicle lifetime.

Engine Control Unit (ECU) Power

Body Control Module (BCM)

Use Scenario: Supplies 5.0 V to MCU, EEPROM, and analog front-end in gasoline/diesel ECUs exposed to load dump and cold cranking.

IC Role / Device Role / Timing Role: Primary post-regulator for safety-critical logic and sensor interfaces.

Use Value: Maintains regulation at 5.16 V input during cranking; survives 60 V transients without external clamping.

Use Scenario: Powers door lock actuators, lighting drivers, and LIN transceivers in vehicle body networks.

IC Role / Device Role / Timing Role: Local 5 V rail generator with reverse-polarity fault containment.

Use Value: Prevents system latch-up during incorrect battery connection; bias current <1.0 mA extends standby battery life.

Advanced Driver Assistance Systems (ADAS) Sensor Hub

Telematics Control Unit (TCU)

Use Scenario: Provides clean 5.0 V to radar MMIC biasing and camera ISP power domains in ADAS domain controllers.

IC Role / Device Role / Timing Role: Low-noise, high-PSRR LDO for analog-sensitive subsystems.

Use Value: 60 dB ripple rejection at 120 Hz suppresses alternator noise; 700 µV_rms output noise avoids ADC quantization errors.

Use Scenario: Powers cellular modem baseband, GNSS receiver, and secure element in connected vehicle telematics units.

IC Role / Device Role / Timing Role: AEC-Q100-compliant primary regulator for always-on communication subsystems.

Use Value: Long-term stability of 20 mV/kHR ensures accurate voltage reference over 15-year vehicle lifetime.

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
NCV8664DS50RKG	Higher 150 mA output, lower 0.12 V dropout at 100 mA, but no reverse polarity protection	Lacks −50 V reverse transient immunity - requires external diode for jump-start robustness	Choose when higher current and lower dropout outweigh need for integrated reverse protection
TLV73350PDBVR	Lower 300 mA output, 0.22 V dropout at 300 mA, ±1% accuracy, but not AEC-Q100 qualified	Not automotive-qualified - unsuitable for under-hood or safety-critical locations	Use only in non-automotive industrial or consumer applications requiring tighter voltage accuracy

Compared with NCV2931AZ-5.0G, NCV8664DS50RKG offers higher current and lower dropout but sacrifices reverse-polarity hardening, while TLV73350PDBVR delivers better accuracy and smaller SOT-23 footprint at the cost of automotive qualification and fault resilience.

Availability

NCV2931AZ-5.0G is available at Aetrix Electronics and suitable for automotive ECU power, body control modules, ADAS sensor hubs, and telematics units requiring stable component supply across extended temperature ranges and harsh electrical environments.

Supply support for NCV2931AZ-5.0G 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, designed specifically for harsh-vehicle-environment regulation with integrated fault protection and AEC-Q100 compliance.

FAQ

What is the maximum input voltage rating for NCV2931AZ-5.0G?

The NCV2931AZ-5.0G supports continuous input voltage up to 40 V DC. It is rated to withstand transient input voltages of 60 V for ≤100 ms (load dump) and reverse polarity inputs of −50 V for ≤100 ms at 1.0% duty cycle - all confirmed in the Absolute Maximum Ratings table of the official datasheet.

Does NCV2931AZ-5.0G require an external output capacitor for stability?

Yes, NCV2931AZ-5.0G is not internally compensated and requires an external output capacitor. The datasheet specifies a minimum 100 µF electrolytic capacitor with ESR ≤0.3 Ω for stable operation at 100 mA load; solid tantalum capacitors are acceptable if |Z_O| ≤ 0.4 Ω across temperature.

Is NCV2931AZ-5.0G pin-compatible with LM2931Z-5.0G?

Yes, NCV2931AZ-5.0G and LM2931Z-5.0G share identical TO-92 pinout (Pin 1 = Output, Pin 2 = Ground, Pin 3 = Input), same mechanical outline, and compatible electrical specs - but NCV2931AZ-5.0G adds AEC-Q100 qualification, wider temperature range (−40 °C to +125 °C), and tighter ±3.8% output tolerance versus ±5.0%.

What thermal derating applies to NCV2931AZ-5.0G at 100 mA in still air?

With R_JA = 178 °C/W and maximum junction temperature T_J = +150 °C, NCV2931AZ-5.0G dissipates 0.5 W at 100 mA and 5 V output. At 25 °C ambient, allowable power is (150 − 25)/178 ≈ 0.70 W - so full 100 mA is viable. Above 85 °C ambient, output current must be reduced per the thermal derating curve in Figure 27.

Can NCV2931AZ-5.0G be used in battery-powered non-automotive equipment?

Yes, NCV2931AZ-5.0G is fully functional in industrial and consumer battery-powered systems. Its 0.4 mA typical bias current, 0.16 V dropout, and −40 °C to +125 °C operation make it suitable for portable test equipment and handheld instruments - though its automotive-grade robustness comes at slightly higher cost than commercial-grade equivalents like LM2931Z-5.0G.

NCV2931AZ-5.0G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: TO-226-3, TO-92-3 Long Body

Packaging:: Bag

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:: Through Hole

Supplier Device Package:: TO-92 (TO-226)

NCV2931AZ-5.0G FAQ

1.How can I place an order for NCV2931AZ-5.0G through Aetrix?

Please submit a Request for Quotation (RFQ) for NCV2931AZ-5.0G 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-5.0G reliable?

The price and inventory of NCV2931AZ-5.0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV2931AZ-5.0G is usually 5 days.

3.What payment methods are accepted for NCV2931AZ-5.0G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV2931AZ-5.0G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NCV2931AZ-5.0G?

NCV2931AZ-5.0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NCV2931AZ-5.0G 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-5.0G?

For technical support, including NCV2931AZ-5.0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV2931AZ-5.0G requirements.

6.How does Aetrix verify that NCV2931AZ-5.0G is sourced from the original manufacturer or authorized distributors?

All NCV2931AZ-5.0G 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-5.0G meets industry standards.

7.What is the process for return or replacement of NCV2931AZ-5.0G?

All NCV2931AZ-5.0G units undergo pre-shipment inspection (PSI). If there is an issue with NCV2931AZ-5.0G, 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-5.0G part is unused and in its original packaging.

Return procedure for NCV2931AZ-5.0G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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