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

onsemi NCV612SQ31T1G

Name: NCV612SQ31T1G
Brand: onsemi
SKU: NCV612SQ31T1G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NCV612SQ31T1G

Manufacturer:: onsemi

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

Package:: 5-TSSOP, SC-70-5, SOT-353

Datasheet:: NCV612SQ31T1G.pdf

Description:: IC REG LINEAR 3.1V 100MA SC88A

Quantity:: RFQ Add To RFQ list

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Product details

Overview

NCV612SQ31T1G from onsemi is an automotive-grade CMOS low-dropout linear voltage regulator delivering a fixed 3.1 V output at up to 100 mA, featuring ultra-low 40 µA quiescent current, 210 mV dropout at 100 mA, and ±2.0% output voltage accuracy over −40 °C to +125 °C - designed for battery-powered infotainment modules and ADAS sensor power rails.

For engineers reviewing the NCV612SQ31T1G datasheet, pinout, applications, or equivalent options, key selection criteria include AEC-Q100 qualification, SC70-5 thermal performance (R_JA = 300 °C/W), enable-controlled standby mode, and ceramic-capacitor stability without ESR constraints.

Technical Context

The NCV612SQ31T1G integrates a PMOS pass transistor with internal voltage reference, error amplifier, and protection circuitry (current limit, thermal shutdown). Its architecture enables stable regulation with 1.0 µF input/output ceramic capacitors and supports dynamic load steps up to 60 mA with <±50 mV transient deviation.

Operation is controlled via a dedicated Enable pin with logic-high threshold of 0.95 V and logic-low threshold of 0.3 V; when unused, it must be tied to Vin. The device maintains regulation down to 210 mV dropout at full 100 mA load across its full automotive temperature range.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 3.1 V ±2.0% over −40 °C to +125 °C - ensures stable MCU core or sensor bias under automotive thermal cycling.
Max Output Current	100 mA continuous - sufficient for low-power microcontrollers, CAN transceivers, or image sensors in compact modules.
Dropout Voltage	210 mV typical at 100 mA - enables operation from 3.31 V input, critical for post-buck or battery-sourced systems.
Quiescent Current	40 µA typical (Enable = Vin) - extends battery life in always-on vehicle subsystems like door modules or telematics.
Enable Threshold	0.95 V (turn-on), 0.3 V (turn-off) - compatible with 1.8 V/3.3 V GPIO without level-shifting.
Thermal Range	−40 °C to +125 °C junction - validated for under-hood and dashboard-mounted applications per AEC-Q100 Grade 1.
Noise Performance	100 µV_RMS (100 Hz–100 kHz) - suitable for analog front-ends and precision ADC references.

Pinout & Package

Housed in the SC70-5 (SOT-353) surface-mount package - 2.2 mm × 1.35 mm footprint with 0.65 mm pitch, optimized for space-constrained automotive PCBs.

Pin/Terminal	Circuit Role	Design Meaning
1	Vin	Positive input supply (0–6.0 V); requires local 1.0 µF ceramic decoupling per layout guidelines.
2	Gnd	Power ground return; must connect to low-impedance ground plane to minimize noise coupling.
3	Enable	Active-high digital control: ≥0.95 V enables regulation; ≤0.3 V disables output and reduces I_Q to <1 µA.
4	N/C	No internal connection - left floating or grounded; no electrical function or routing required.
5	Vout	Regulated 3.1 V output; stable with 1.0 µF ceramic capacitor (ESR 1–5 Ω acceptable).

Key Features

Feature	Design Value
AEC-Q100 Qualified	Grade 1 (−40 °C to +125 °C) with PPAP capability - meets automotive OEM requirements for functional safety-critical power domains.
Ultra-Low I_Q	40 µA typical enables >1-year battery standby in always-on vehicle modules without compromising regulation.
Ceramic-Cap Stable	No minimum ESR requirement - eliminates need for tantalum or aluminum electrolytics, reducing BOM cost and board area.
Thermal Shutdown	Activates at ~160 °C junction temperature - protects against solder reflow damage and sustained overload conditions.
Pb-Free & RoHS	SC70-5 package with matte-tin lead finish - compliant with automotive ELV and global environmental directives.

Applications

Infotainment Power Rail	ADAS Camera Module
Use Scenario: Powering 3.3 V I/O and 3.1 V analog front-end of a head-unit display controller. IC Role / Device Role / Timing Role: Primary LDO supplying clean, low-noise bias to touch controller and display driver ICs. Use Value: 100 µV_RMS noise and ±2% accuracy prevent display flicker and touch misregistration during engine cranking.	Use Scenario: Regulating power for a 1.2 MP CMOS image sensor and ISP in a rear-view camera. IC Role / Device Role / Timing Role: Secondary LDO delivering stable 3.1 V to sensor analog core and PLL clock circuitry. Use Value: 210 mV dropout allows direct use of 3.3 V buck output, minimizing heat generation in sealed camera housing.
Body Control Module	Telematics Unit
Use Scenario: Supplying 3.1 V to LIN transceiver and microcontroller peripherals in door latch electronics. IC Role / Device Role / Timing Role: Always-on LDO enabling wake-on-LIN functionality with sub-50 µA system sleep current. Use Value: 40 µA quiescent current ensures >2-year battery life in parked vehicle state per ISO 19453-3.	Use Scenario: Providing regulated 3.1 V to GNSS receiver and cellular modem baseband processor. IC Role / Device Role / Timing Role: Isolated LDO decoupling RF and digital domains to reduce conducted emissions. Use Value: SC70-5 size and ceramic compatibility allow placement directly at modem power pins, improving EMC performance.

Infotainment Power Rail

ADAS Camera Module

Use Scenario: Powering 3.3 V I/O and 3.1 V analog front-end of a head-unit display controller.

IC Role / Device Role / Timing Role: Primary LDO supplying clean, low-noise bias to touch controller and display driver ICs.

Use Value: 100 µV_RMS noise and ±2% accuracy prevent display flicker and touch misregistration during engine cranking.

Use Scenario: Regulating power for a 1.2 MP CMOS image sensor and ISP in a rear-view camera.

IC Role / Device Role / Timing Role: Secondary LDO delivering stable 3.1 V to sensor analog core and PLL clock circuitry.

Use Value: 210 mV dropout allows direct use of 3.3 V buck output, minimizing heat generation in sealed camera housing.

Body Control Module

Telematics Unit

Use Scenario: Supplying 3.1 V to LIN transceiver and microcontroller peripherals in door latch electronics.

IC Role / Device Role / Timing Role: Always-on LDO enabling wake-on-LIN functionality with sub-50 µA system sleep current.

Use Value: 40 µA quiescent current ensures >2-year battery life in parked vehicle state per ISO 19453-3.

Use Scenario: Providing regulated 3.1 V to GNSS receiver and cellular modem baseband processor.

IC Role / Device Role / Timing Role: Isolated LDO decoupling RF and digital domains to reduce conducted emissions.

Use Value: SC70-5 size and ceramic compatibility allow placement directly at modem power pins, improving EMC performance.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV73331PDBVR	300 mA output, 250 mV dropout, 50 µA I_Q, SOT-23-5 package (larger footprint)	Higher current capacity but lacks AEC-Q100 qualification and automotive temp range	Select only for non-automotive industrial designs requiring >100 mA.
TPS7A0531PDQNR	200 mA output, 175 mV dropout, 25 µA I_Q, X2SON-4 package (no Enable pin)	Smaller package but missing enable control and automotive qualification	Use where board space is critical and enable functionality is unnecessary.

Compared with TLV73331PDBVR and TPS7A0531PDQNR, the NCV612SQ31T1G uniquely combines AEC-Q100 Grade 1 compliance, enable control in SC70-5, and 40 µA I_Q - making it the only drop-in solution for space-constrained automotive LDO applications requiring functional safety support.

Availability

NCV612SQ31T1G is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and body control units requiring stable component supply with full traceability and long-term lifecycle assurance.

Supply support for NCV612SQ31T1G 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 is a global semiconductor supplier focused on energy-efficient innovation for automotive, industrial, cloud, and IoT applications.

The NCV612SQ31T1G belongs to onsemi's automotive-qualified LDO family, engineered specifically for reliable, low-noise power delivery in harsh-temperature vehicle subsystems.

FAQ

What is the maximum input voltage rating for the NCV612SQ31T1G?

The NCV612SQ31T1G has an absolute maximum input voltage of 6.0 V. Operation above this level risks permanent damage. For reliable 3.1 V output, minimum recommended input is 3.31 V (3.1 V + 210 mV dropout), and typical use cases apply 3.3 V or 5.0 V inputs with appropriate derating for thermal limits.

Does the NCV612SQ31T1G require external components to operate stably?

Yes - the NCV612SQ31T1G requires a minimum 1.0 µF ceramic capacitor on both input (Vin) and output (Vout) pins, placed as close as possible to the device. No ESR constraints apply, and higher capacitance improves load transient response. The Enable pin must be pulled high to Vin if not actively controlled.

Is the NCV612SQ31T1G pin-compatible with other variants in the NCV612 series?

Yes - all NCV612 variants (e.g., NCV612SQ30T1G, NCV612SQ33T1G) share identical SC70-5 pinout and package dimensions. Only the output voltage and marking code differ; no PCB redesign is needed when changing between 1.5 V–5.0 V versions.

What thermal derating applies to the NCV612SQ31T1G at 85 °C ambient?

At 85 °C ambient, the NCV612SQ31T1G's maximum power dissipation drops to ~220 mW (calculated as (125 °C − 85 °C)/300 °C/W). With 3.1 V output and 100 mA load, max allowable input is ~5.3 V to stay within thermal limits - verify with actual board layout using thermal vias and copper pour.

How does the Enable pin behavior affect system-level power sequencing?

The NCV612SQ31T1G Enable pin provides precise control: output turns on when voltage exceeds 0.95 V and turns off below 0.3 V. This allows clean power-up/down sequencing with microcontroller GPIOs, supports wake-on-event architectures, and reduces system standby current to <1 µA when disabled - critical for ISO 19453-compliant vehicle modules.

NCV612SQ31T1G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: 5-TSSOP, SC-70-5, SOT-353

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 6V

Voltage - Output (Min/Fixed):: 3.1V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.38V @ 100mA

Current - Output:: 100mA

Current - Quiescent (Iq):: 90 µA

Current - Supply (Max):: 90 µA

PSRR:: -

Control Features:: Enable

Protection Features:: Over Current, Over Temperature

Operating Temperature:: -40°C ~ 125°C

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: SC-88A (SC-70-5/SOT-353)

NCV612SQ31T1G FAQ

1.How can I place an order for NCV612SQ31T1G through Aetrix?

Please submit a Request for Quotation (RFQ) for NCV612SQ31T1G 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 NCV612SQ31T1G reliable?

The price and inventory of NCV612SQ31T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV612SQ31T1G is usually 5 days.

3.What payment methods are accepted for NCV612SQ31T1G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV612SQ31T1G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NCV612SQ31T1G?

NCV612SQ31T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NCV612SQ31T1G 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 NCV612SQ31T1G?

For technical support, including NCV612SQ31T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV612SQ31T1G requirements.

6.How does Aetrix verify that NCV612SQ31T1G is sourced from the original manufacturer or authorized distributors?

All NCV612SQ31T1G 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 NCV612SQ31T1G meets industry standards.

7.What is the process for return or replacement of NCV612SQ31T1G?

All NCV612SQ31T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCV612SQ31T1G, 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 NCV612SQ31T1G part is unused and in its original packaging.

Return procedure for NCV612SQ31T1G:

1.Submit a request within 90 days.

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

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