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

onsemi NCV662SQ27T1G

Name: NCV662SQ27T1G
Brand: onsemi
SKU: NCV662SQ27T1G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NCV662SQ27T1G

Manufacturer:: onsemi

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

Package:: SC-82A, SOT-343

Datasheet:: NCV662SQ27T1G.pdf

Description:: IC REG LINEAR 2.7V 100MA SC82AB

Quantity:: RFQ Add To RFQ list

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Product details

Overview

NCV662SQ27T1G from onsemi is an automotive-grade, fixed-output CMOS low-dropout linear regulator delivering 2.7 V at 100 mA with ultra-low quiescent current (2.5 µA typical), ±2.0% output voltage accuracy, and operation over −40 °C to +125 °C. It features an enable pin for ON/OFF control and is housed in the SC-82AB package, targeting battery-powered infotainment systems requiring stable, low-power voltage regulation.

For engineers reviewing the NCV662SQ27T1G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 100 mA (280 mV max), thermal shutdown protection, AEC-Q100 qualification, compatibility with 0.1 µF ceramic output capacitors, and enable threshold voltage (1.3 V logic high, 0.5 V logic low).

Technical Context

The NCV662SQ27T1G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and protection circuitry (current limit and thermal shutdown) in a single die. Its enable-controlled architecture allows system-level power sequencing and standby mode management without external circuitry.

Designed for automotive environments, it meets AEC-Q100 Grade 1 requirements and operates across −40 °C to +125 °C ambient. The regulator maintains regulation down to a 280 mV input–output differential at full 100 mA load and exhibits 100 µV_RMS output noise (100 Hz–100 kHz) at 3.0 V output - parameters confirmed for the NCV662 series and explicitly applicable to NCV662SQ27T1G per device family specifications.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.7 V ±2.0% - ensures stable supply for 2.7 V–tolerant microcontrollers and sensors without external feedback.
Max Output Current	100 mA - sufficient for powering low-power MCU cores, CAN transceivers, or display bias circuits.
Quiescent Current	2.5 µA typical - enables multi-year battery life in always-on automotive modules (e.g., telematics wake-up circuits).
Dropout Voltage	280 mV max at 100 mA - supports operation from partially discharged 3.3 V or 3.6 V Li-ion cells down to ~2.98 V input.
Enable Threshold	V_TH(HI) = 1.3 V, V_TH(LO) = 0.5 V - compatible with 1.8 V/3.3 V GPIOs for direct microcontroller control without level-shifting.
Operating Temp	−40 °C to +125 °C - qualified for under-hood and infotainment head-unit applications per AEC-Q100.
Input Voltage Range	Up to 6.0 V - accommodates 5 V rail variations and transient spikes in automotive 12 V systems via DC-DC pre-regulation.

Pinout & Package

The NCV662SQ27T1G is packaged in the SC-82AB (Case 419C) surface-mount package - a 4-pin, 2.0 mm × 1.25 mm micro-miniature outline with exposed thermal pad (not electrically connected). Pin 1 is GND, Pin 2 is Vin, Pin 3 is Vout, and Pin 4 is Enable.

Pin/Terminal	Circuit Role	Design Meaning
1	GND	Power supply ground reference; must be low-impedance connection to minimize noise coupling and ensure thermal stability.
2	Vin	Positive input supply (up to 6.0 V); requires local 1.0 µF decoupling capacitor placed adjacent to the pin.
3	Vout	Regulated 2.7 V output; supports minimum 0.1 µF ceramic capacitor; ESR-insensitive for robust transient response.
4	Enable	Active-high digital control input; pulls low to disable regulator (ultra-low I_Q standby); connect to Vin if unused.

Key Features

Feature	Design Value
AEC-Q100 Qualified	Grade 1 (−40 °C to +125 °C) - validated for automotive infotainment, body control, and ADAS subsystems requiring PPAP compliance.
Ultra-Low Quiescent Current	2.5 µA typical - reduces parasitic drain in always-on vehicle networks (e.g., LIN/CAN wake-up receivers).
Thermal Shutdown Protection	Activates at ~160 °C junction temperature - prevents damage during sustained overload or poor PCB thermal design.
Pb-Free & RoHS Compliant	SC-82AB package marked "G" - meets global environmental regulations and reflow soldering standards (J-STD-020).
Stable with Ceramic Capacitors	Minimum 0.1 µF output capacitance - eliminates need for tantalum or aluminum electrolytics, reducing BOM cost and board space.

Applications

Automotive Infotainment	Telematics Control Unit (TCU)
Use Scenario: Powering audio DSPs, touchscreen controllers, and Bluetooth/Wi-Fi SoCs in head units with strict low-power sleep modes. IC Role / Device Role / Timing Role: Primary 2.7 V LDO supplying core logic rails; enables fast wake-from-sleep via Enable pin assertion. Use Value: 2.5 µA quiescent current extends battery backup runtime during ignition-off; ±2.0% accuracy ensures reliable ADC reference and memory retention.	Use Scenario: Regulating power for GPS baseband processors and cellular modem interfaces in connected car gateways. IC Role / Device Role / Timing Role: Secondary LDO providing clean 2.7 V supply isolated from noisy DC-DC switching rails. Use Value: 100 µV_RMS output noise minimizes RF interference in GNSS front-end; 280 mV dropout sustains operation during cold-crank transients.
Body Control Module (BCM)	Instrument Cluster Display
Use Scenario: Supplying door module MCUs and LIN transceivers where long-term reliability and thermal resilience are critical. IC Role / Device Role / Timing Role: System-level voltage supervisor with integrated enable for firmware-controlled power gating. Use Value: −40 °C to +125 °C operation ensures functionality in engine bay proximity; thermal shutdown prevents field failures under sealed enclosure conditions.	Use Scenario: Powering OLED or TFT display drivers requiring precise, ripple-free 2.7 V bias in driver information systems. IC Role / Device Role / Timing Role: Low-noise analog supply rail decoupled from digital switching domains. Use Value: Stable 2.7 V output with <20 mV load regulation (10–100 mA) prevents brightness flicker; SC-82AB footprint saves space in compact cluster PCBs.

Automotive Infotainment

Telematics Control Unit (TCU)

Use Scenario: Powering audio DSPs, touchscreen controllers, and Bluetooth/Wi-Fi SoCs in head units with strict low-power sleep modes.

IC Role / Device Role / Timing Role: Primary 2.7 V LDO supplying core logic rails; enables fast wake-from-sleep via Enable pin assertion.

Use Value: 2.5 µA quiescent current extends battery backup runtime during ignition-off; ±2.0% accuracy ensures reliable ADC reference and memory retention.

Use Scenario: Regulating power for GPS baseband processors and cellular modem interfaces in connected car gateways.

IC Role / Device Role / Timing Role: Secondary LDO providing clean 2.7 V supply isolated from noisy DC-DC switching rails.

Use Value: 100 µV_RMS output noise minimizes RF interference in GNSS front-end; 280 mV dropout sustains operation during cold-crank transients.

Body Control Module (BCM)

Instrument Cluster Display

Use Scenario: Supplying door module MCUs and LIN transceivers where long-term reliability and thermal resilience are critical.

IC Role / Device Role / Timing Role: System-level voltage supervisor with integrated enable for firmware-controlled power gating.

Use Value: −40 °C to +125 °C operation ensures functionality in engine bay proximity; thermal shutdown prevents field failures under sealed enclosure conditions.

Use Scenario: Powering OLED or TFT display drivers requiring precise, ripple-free 2.7 V bias in driver information systems.

IC Role / Device Role / Timing Role: Low-noise analog supply rail decoupled from digital switching domains.

Use Value: Stable 2.7 V output with <20 mV load regulation (10–100 mA) prevents brightness flicker; SC-82AB footprint saves space in compact cluster PCBs.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
NCV8170DS270MNTXG	2.7 V, 150 mA, 300 nA I_Q, no enable pin, SOT-563 package	Lacks enable control; lower I_Q but higher dropout (350 mV @ 100 mA)	Preferred where ultra-low standby current outweighs need for active power sequencing.
TLV73327PDBVR	2.7 V, 300 mA, 65 µA I_Q, enable pin, SOT-23-5 package	Higher I_Q, larger footprint, wider input range (1.4–5.5 V), not AEC-Q100 qualified	Suitable for non-automotive industrial designs needing higher current and tighter line regulation.

Compared with NCV662SQ27T1G, NCV8170DS270MNTXG offers significantly lower quiescent current but sacrifices enable functionality and automotive qualification, while TLV73327PDBVR provides higher output current and broader input range at the cost of elevated I_Q and lack of AEC-Q100 validation - making NCV662SQ27T1G the optimal choice for thermally demanding, safety-conscious automotive LDO applications requiring precise 2.7 V regulation with active control.

Availability

NCV662SQ27T1G is available at Aetrix Electronics and suitable for automotive infotainment, telematics control units, and body control modules requiring stable component supply, long-lifecycle support, and AEC-Q100-compliant sourcing.

Supply support for NCV662SQ27T1G 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 electronics, delivering silicon solutions for automotive, industrial, cloud, and IoT applications.

The NCV662SQ27T1G belongs to onsemi's automotive-qualified LDO regulator product line, designed specifically for low-power, high-reliability voltage regulation in harsh-temperature vehicle subsystems.

FAQ

What is the maximum input voltage rating for the NCV662SQ27T1G?

The NCV662SQ27T1G has a maximum input voltage rating of 6.0 V, as specified in the Absolute Maximum Ratings table. Exceeding this voltage may cause permanent damage. This rating allows safe operation from nominal 5 V supplies with tolerance for automotive load-dump transients when used downstream of appropriate pre-regulation stages.

Is the NCV662SQ27T1G pin-compatible with other devices in the NCV662/NCP662 family?

Yes, the NCV662SQ27T1G shares the same SC-82AB package and 4-pin pinout (GND, Vin, Vout, Enable) with all NCV662 and NCP662 variants. Pin compatibility is confirmed by the shared "NCP662/NCV662 Top View" diagram in the datasheet, which applies identically to NCV662SQ27T1G regardless of output voltage variant.

Does the NCV662SQ27T1G require an external pull-up resistor on the Enable pin?

No, the NCV662SQ27T1G does not require an external pull-up resistor on the Enable pin. If unused, the datasheet specifies that Enable should be directly connected to Vin - a hard-wired connection that ensures reliable turn-on without additional components or leakage path concerns.

What is the minimum output capacitor required for stable operation of the NCV662SQ27T1G?

The NCV662SQ27T1G requires a minimum output capacitor of 0.1 µF ceramic, as stated in the datasheet. This value ensures stability across all operating conditions and load currents; larger values (e.g., 1.0 µF) improve load transient response and noise rejection but are not mandatory for basic regulation.

Is the NCV662SQ27T1G still in active production or discontinued?

The NCV662SQ27T1G is marked as discontinued per the official onsemi datasheet revision history (Rev. 5, November 2025) and ordering information table. While no longer in active production, Aetrix Electronics maintains legacy inventory and supports obsolescence management, including cross-reference assistance and last-time-buy planning for NCV662SQ27T1G.

NCV662SQ27T1G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: SC-82A, SOT-343

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 6V

Voltage - Output (Min/Fixed):: 2.7V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.5V @ 100mA

Current - Output:: 100mA

Current - Quiescent (Iq):: 1 µA

Current - Supply (Max):: 6 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-82AB

NCV662SQ27T1G FAQ

1.How can I place an order for NCV662SQ27T1G through Aetrix?

Please submit a Request for Quotation (RFQ) for NCV662SQ27T1G 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 NCV662SQ27T1G reliable?

The price and inventory of NCV662SQ27T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV662SQ27T1G is usually 5 days.

3.What payment methods are accepted for NCV662SQ27T1G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV662SQ27T1G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NCV662SQ27T1G?

NCV662SQ27T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NCV662SQ27T1G 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 NCV662SQ27T1G?

For technical support, including NCV662SQ27T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV662SQ27T1G requirements.

6.How does Aetrix verify that NCV662SQ27T1G is sourced from the original manufacturer or authorized distributors?

All NCV662SQ27T1G 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 NCV662SQ27T1G meets industry standards.

7.What is the process for return or replacement of NCV662SQ27T1G?

All NCV662SQ27T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCV662SQ27T1G, 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 NCV662SQ27T1G part is unused and in its original packaging.

Return procedure for NCV662SQ27T1G:

1.Submit a request within 90 days.

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

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