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

onsemi NCV662SQ30T1G

Name: NCV662SQ30T1G
Brand: onsemi
SKU: NCV662SQ30T1G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NCV662SQ30T1G

Manufacturer:: onsemi

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

Package:: SC-82A, SOT-343

Datasheet:: NCV662SQ30T1G.pdf

Description:: IC REG LINEAR 3V 100MA SC82AB

Quantity:: RFQ Add To RFQ list

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Inventory:2,800

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Product details

Overview

NCV662SQ30T1G from onsemi is an automotive-grade, fixed-output 3.0 V low-dropout linear regulator with 100 mA output capability, ultra-low 2.5 µA quiescent current, and enable control. It uses a PMOS pass transistor, delivers ±2.0% output voltage accuracy over −40 °C to +125 °C, and is housed in the SC-82AB (Case 419C) package for space-constrained battery-powered infotainment systems.

For engineers reviewing the NCV662SQ30T1G datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q100 qualification, 230 mV dropout at 100 mA, thermal shutdown protection, and compatibility with 0.1 µF ceramic output capacitors in automotive power rail conditioning.

Technical Context

The NCV662SQ30T1G integrates a precision voltage reference, error amplifier, and PMOS power transistor in a single die. Its enable input (pin 4) provides logic-level ON/OFF control with 1.3 V turn-on and 0.5 V turn-off thresholds, supporting low-power standby modes without external circuitry.

Designed for stability with minimal external components, it operates with only 0.1 µF output capacitance and tolerates ESR from near-zero up to 10 Ω. Internal protection includes current limiting, thermal shutdown at ~160 °C, and reverse-voltage safe operation up to −0.3 V on V_OUT.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 3.0 V ±2.0% over −40 °C to +125 °C - ensures stable MCU core or sensor supply under full automotive temperature range.
Quiescent Current	2.5 µA typical (Enable = 0 V) - enables multi-year battery life in always-on vehicle modules like telematics or door controllers.
Dropout Voltage	230 mV max at 100 mA load - allows regulation from 3.23 V input, supporting operation down to single-cell LiFePO₄ or degraded 12 V rail.
Input Voltage Range	−0.3 V to 6.0 V - accommodates load-dump transients and reverse-battery protection when used with external diodes.
Thermal Shutdown	Activates at ~160 °C junction temperature - prevents permanent damage during sustained overload or poor PCB heatsinking.
Output Capacitor Min.	0.1 µF ceramic - eliminates need for large tantalum or electrolytic caps, reducing board area and cost in compact modules.
Enable Threshold	Logic-high ≥1.3 V, logic-low ≤0.5 V - interfaces directly with 3.3 V or 5 V microcontrollers without level-shifting.

Pinout & Package

The NCV662SQ30T1G is packaged in SC-82AB (Case 419C), a 4-pin, 2.0 × 1.25 mm surface-mount micro-miniature package with exposed thermal pad (not electrically connected). Pin 1 = GND, Pin 2 = V_IN, Pin 3 = V_OUT, Pin 4 = Enable.

Pin/Terminal	Circuit Role	Design Meaning
1	GND	Power ground reference and primary thermal path - must be connected to large copper pour for thermal management.
2	V_IN	Unregulated input supply - accepts up to 6.0 V; requires local 1.0 µF decoupling capacitor placed adjacent to pin.
3	V_OUT	Regulated 3.0 V output - drives loads up to 100 mA; minimum 0.1 µF ceramic capacitor required for stability.
4	Enable	Active-high digital control input - pulls low to disable regulator and reduce I_Q to <100 nA; if unused, tie directly to V_IN.

Key Features

Feature	Design Value
AEC-Q100 Qualified	Rated for automotive applications (Grade 1: −40 °C to +125 °C ambient), including PPAP-capable manufacturing and traceable lot control.
Ultra-Low Quiescent Current	2.5 µA typical operating I_Q enables >10-year battery runtime in always-on vehicle subsystems such as keyless entry receivers.
PMOS Pass Transistor	Eliminates body-diode conduction path - prevents backfeed from V_OUT to V_IN during input loss, improving system safety.
Stable with Ceramic Capacitors	No ESR requirement allows use of low-cost, high-reliability 0.1–10 µF X5R/X7R ceramics - reduces BOM count and improves long-term aging performance.
Integrated Protection	Current limit, thermal shutdown, and reverse-voltage tolerance (−0.3 V on V_OUT) provide robustness against fault conditions without external components.

Applications

Automotive Infotainment Power	Telematics Control Unit (TCU)
Use Scenario: Providing clean 3.0 V bias to audio codecs, touch controller ICs, and display interface logic in head units. IC Role / Device Role / Timing Role: Primary LDO for noise-sensitive analog and mixed-signal blocks requiring low ripple and fast transient response. Use Value: 100 mV_PP load transient deviation (30 mA step) and 100 µV_RMS output noise ensure SNR integrity in audio signal chains.	Use Scenario: Powering GPS baseband processors and cellular modem sleep-mode logic in connected car gateways. IC Role / Device Role / Timing Role: Always-on supply enabling wake-on-GPS or wake-on-RF events while maintaining sub-µA system standby current. Use Value: 2.5 µA quiescent current and enable-controlled shutdown reduce total TCU quiescent draw below 15 µA - meeting ISO 16750-2 Class D requirements.
Body Control Module (BCM) Sensors	Advanced Driver Assistance Systems (ADAS) Camera Modules
Use Scenario: Supplying 3.0 V to LIN transceivers, door lock actuators, and ambient light sensors in distributed BCM nodes. IC Role / Device Role / Timing Role: Local point-of-load regulator replacing centralized 3.3 V rails to improve fault isolation and EMC performance. Use Value: −40 °C to +125 °C operation and AEC-Q100 qualification ensure reliable function across engine bay and cabin environments.	Use Scenario: Biasing image signal processors (ISPs) and MIPI CSI-2 serializers in rear-view or surround-view camera ECUs. IC Role / Device Role / Timing Role: Secondary regulated rail decoupled from noisy main 5 V or 12 V supplies to prevent clock jitter and pixel noise. Use Value: 230 mV dropout enables stable 3.0 V output even during cold-crank (6.5 V min battery), preventing ISP brownout resets.

Automotive Infotainment Power

Telematics Control Unit (TCU)

Use Scenario: Providing clean 3.0 V bias to audio codecs, touch controller ICs, and display interface logic in head units.

IC Role / Device Role / Timing Role: Primary LDO for noise-sensitive analog and mixed-signal blocks requiring low ripple and fast transient response.

Use Value: 100 mV_PP load transient deviation (30 mA step) and 100 µV_RMS output noise ensure SNR integrity in audio signal chains.

Use Scenario: Powering GPS baseband processors and cellular modem sleep-mode logic in connected car gateways.

IC Role / Device Role / Timing Role: Always-on supply enabling wake-on-GPS or wake-on-RF events while maintaining sub-µA system standby current.

Use Value: 2.5 µA quiescent current and enable-controlled shutdown reduce total TCU quiescent draw below 15 µA - meeting ISO 16750-2 Class D requirements.

Body Control Module (BCM) Sensors

Advanced Driver Assistance Systems (ADAS) Camera Modules

Use Scenario: Supplying 3.0 V to LIN transceivers, door lock actuators, and ambient light sensors in distributed BCM nodes.

IC Role / Device Role / Timing Role: Local point-of-load regulator replacing centralized 3.3 V rails to improve fault isolation and EMC performance.

Use Value: −40 °C to +125 °C operation and AEC-Q100 qualification ensure reliable function across engine bay and cabin environments.

Use Scenario: Biasing image signal processors (ISPs) and MIPI CSI-2 serializers in rear-view or surround-view camera ECUs.

IC Role / Device Role / Timing Role: Secondary regulated rail decoupled from noisy main 5 V or 12 V supplies to prevent clock jitter and pixel noise.

Use Value: 230 mV dropout enables stable 3.0 V output even during cold-crank (6.5 V min battery), preventing ISP brownout resets.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV73330PDBVR	300 mA output, 45 µA I_Q, no enable pin, SOT-23-5 package.	Lacks enable control and automotive qualification; suitable for industrial or consumer portable devices only.	Select when higher output current is needed and AEC-Q100 is not required.
TPS78030QDDCRQ1	150 mA output, 500 nA I_Q, enable pin, WSON-6 package, AEC-Q100 Grade 1.	Lower I_Q but larger footprint and higher cost; requires 1 µF min output capacitor.	Select when ultra-low standby current (<1 µA) is critical and board space permits WSON-6.

Compared with TLV73330PDBVR and TPS78030QDDCRQ1, the NCV662SQ30T1G offers the optimal balance of automotive qualification, 2.5 µA I_Q, enable functionality, and SC-82AB footprint - making it ideal for cost- and space-sensitive automotive modules where moderate current and proven reliability are prioritized.

Availability

NCV662SQ30T1G is available at Aetrix Electronics and suitable for automotive infotainment, telematics control units, and body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for NCV662SQ30T1G 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The NCV662SQ30T1G belongs to onsemi's automotive-qualified LDO regulator family designed specifically for low-power, high-reliability power management in harsh-temperature vehicle subsystems.

FAQ

What is the maximum input voltage rating for the NCV662SQ30T1G?

The NCV662SQ30T1G supports an absolute maximum input voltage of 6.0 V. Exceeding this value may cause permanent damage. In automotive applications, this rating accommodates nominal 12 V system transients including load dump (up to ~40 V) only when used with appropriate external clamping circuitry - the device itself must remain within its 6.0 V limit at all times. The NCV662SQ30T1G data sheet specifies V_IN = −0.3 V to +6.0 V as the safe operating range.

Does the NCV662SQ30T1G require an external pull-up resistor on the Enable pin?

No, the NCV662SQ30T1G does not require an external pull-up resistor on the Enable pin. When the Enable function is unused, the datasheet explicitly states that the pin should be connected directly to V_IN. The internal structure supports direct tying to the input rail, eliminating external components and ensuring reliable startup without risk of floating inputs. This simplifies layout and reduces BOM count in space-constrained automotive modules.

What is the minimum output capacitor required for stable operation of the NCV662SQ30T1G?

The NCV662SQ30T1G requires a minimum output capacitor of 0.1 µF ceramic. This value is specified in the datasheet and validated for stability across all operating conditions, including full temperature range and load steps. Larger values (e.g., 1.0 µF) further improve load transient response and noise rejection but are not mandatory. The regulator is stable with ESR ranging from near-zero up to 10 Ω, making it compatible with standard X5R/X7R MLCCs without special ESR requirements.

Is the NCV662SQ30T1G pin-compatible with other devices in the NCP662/NCV662 family?

Yes, the NCV662SQ30T1G is pin-compatible with all SC-82AB-packaged variants in the NCV662 series (e.g., NCV662SQ15T1G, NCV662SQ50T1G) and shares identical pinout: Pin 1 = GND, Pin 2 = V_IN, Pin 3 = V_OUT, Pin 4 = Enable. This allows drop-in replacement across output voltage options without PCB redesign, provided thermal and electrical constraints (e.g., dropout margin, load current) are verified for the new voltage variant.

What protection features are integrated into the NCV662SQ30T1G?

The NCV662SQ30T1G integrates current limiting, thermal shutdown (triggering at ~160 °C junction temperature), and reverse-voltage tolerance on V_OUT (−0.3 V). It also features internal ESD protection rated to 2000 V HBM. These protections operate autonomously without external components, safeguarding both the regulator and downstream circuitry during fault conditions such as shorted outputs, excessive ambient temperature, or incorrect supply sequencing - critical for unattended automotive electronics.

NCV662SQ30T1G 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):: 3V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.42V @ 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

NCV662SQ30T1G FAQ

1.How can I place an order for NCV662SQ30T1G through Aetrix?

Please submit a Request for Quotation (RFQ) for NCV662SQ30T1G 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 NCV662SQ30T1G reliable?

The price and inventory of NCV662SQ30T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV662SQ30T1G is usually 5 days.

3.What payment methods are accepted for NCV662SQ30T1G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV662SQ30T1G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NCV662SQ30T1G?

NCV662SQ30T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NCV662SQ30T1G 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 NCV662SQ30T1G?

For technical support, including NCV662SQ30T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV662SQ30T1G requirements.

6.How does Aetrix verify that NCV662SQ30T1G is sourced from the original manufacturer or authorized distributors?

All NCV662SQ30T1G 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 NCV662SQ30T1G meets industry standards.

7.What is the process for return or replacement of NCV662SQ30T1G?

All NCV662SQ30T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCV662SQ30T1G, 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 NCV662SQ30T1G part is unused and in its original packaging.

Return procedure for NCV662SQ30T1G:

1.Submit a request within 90 days.

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

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