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

onsemi NCV612SQ28T2G

Name: NCV612SQ28T2G
Brand: onsemi
SKU: NCV612SQ28T2G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NCV612SQ28T2G

Manufacturer:: onsemi

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

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

Datasheet:: NCV612SQ28T2G.pdf

Description:: IC REG LINEAR 2.8V 100MA SC88A

Quantity:: RFQ Add To RFQ list

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Product details

Overview

NCV612SQ28T2G from onsemi is an automotive-grade, fixed-output CMOS low-dropout linear regulator delivering 2.8 V at up to 100 mA with 40 µA typical quiescent current and 250 mV dropout at full load. It integrates PMOS pass transistor, thermal shutdown, current limiting, and enable control - designed for battery-powered infotainment modules and ADAS sensors requiring stable low-voltage bias under wide temperature extremes.

For engineers reviewing the NCV612SQ28T2G datasheet, pinout, applications, or equivalent options, key selection criteria include AEC-Q100 qualification, −40 °C to +125 °C operation, SC70-5 package footprint, and 2.0% output voltage accuracy across temperature and load.

Technical Context

The NCV612SQ28T2G employs a PMOS pass element architecture enabling ultra-low quiescent current and dropout performance independent of load current polarity. Its internal error amplifier maintains regulation by comparing a trimmed bandgap reference against the feedback network - which is fully integrated for fixed 2.8 V output.

Enable logic operates with 0.3 V (low) / 0.95 V (high) thresholds, supporting direct connection to microcontroller GPIOs without level-shifting. Thermal protection activates at ~160 °C junction temperature, and the device sustains 100 mA continuous output while maintaining ±2.0% output accuracy from −40 °C to +125 °C ambient.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	2.8 V ±2.0% over −40 °C to +125 °C and 1–100 mA load - ensures stable MCU core/buffer rail in automotive ECUs.
Dropout Voltage	250 mV max at 100 mA and 2.8 V output - enables operation down to 3.05 V input, critical for cold-crank battery conditions.
Quiescent Current	40 µA typical at no load - extends battery life in always-on telematics modules during vehicle sleep mode.
Operating Temperature	−40 °C to +125 °C ambient - meets AEC-Q100 Grade 1 requirements for under-hood and cabin electronics.
Input Voltage Range	0 V to 6.0 V - supports direct connection to 5 V systems or post-LDO 3.3 V rails without external clamping.
Output Noise	100 µVrms (100 Hz–100 kHz) - suitable for noise-sensitive analog sensor signal chains and RF front-end biasing.
Enable Threshold	0.95 V (turn-on), 0.3 V (turn-off) - compatible with 1.8 V/3.3 V logic without pull-up resistors.

Pinout & Package

NCV612SQ28T2G is housed in the SC70-5 (SOT-353) surface-mount package - 2.0 mm × 1.25 mm footprint with 0.65 mm lead pitch - optimized for space-constrained automotive PCBs.

Pin/Terminal	Circuit Role	Design Meaning
1	Vin	Positive input supply: accepts 0–6.0 V; requires local 1.0 µF ceramic decoupling per datasheet layout guidance.
2	Gnd	Power ground reference: must be connected to low-impedance PCB ground plane to ensure stability and thermal performance.
3	Enable	Digital control input: pulls low to disable regulator (I_Q < 1 µA); connect to Vin if unused to guarantee always-on operation.
4	N/C	No internal connection: left unconnected; no routing or soldering required.
5	Vout	Regulated 2.8 V output: requires 1.0 µF minimum ceramic output capacitor placed adjacent to pin for transient response and noise suppression.

Key Features

Feature	Design Value
AEC-Q100 Qualified	Qualified to Grade 1 (−40 °C to +125 °C) with PPAP documentation support - enables use in ASIL-B compliant power domains.
Ultra-Low I_Q	40 µA typical quiescent current - reduces standby power loss in always-on vehicle networks (e.g., CAN FD wake-up circuits).
PMOS Pass Transistor	Enables low dropout and eliminates reverse-current path - prevents backfeed from Vout to Vin during input brownout or hot-swap events.
Integrated Protection	Thermal shutdown (160 °C), current limit (~150–600 mA depending on V_in), and ESD robustness (2 kV HBM) - eliminates need for external protection components.
Ceramic-Capacitor Stable	Stable with 1.0 µF ceramic output capacitors (0–5 Ω ESR) - simplifies BOM and improves high-frequency PSRR vs. tantalum alternatives.

Applications

Infotainment Power Rail	ADAS Camera Bias Supply
Use Scenario: Providing clean 2.8 V bias to image signal processors (ISPs) and MIPI CSI-2 serializer ICs in rear-view and surround-view camera modules. IC Role / Device Role / Timing Role: Primary LDO regulator supplying core voltage to ISP and sensor interface logic - not a clock source or timing device. Use Value: 100 µVrms output noise and 2.0% accuracy ensure minimal ADC quantization error and consistent pixel gain calibration across temperature.	Use Scenario: Powering low-power radar transceiver bias circuits in 24 GHz blind-spot detection modules mounted near wheel wells. IC Role / Device Role / Timing Role: Standby-mode regulator maintaining bias on RF amplifiers and PLL charge pumps during vehicle sleep cycles. Use Value: 40 µA quiescent current limits parasitic drain to <1 µA per module - critical for meeting ISO 16750-2 quiescent current budgets.
Telematics Control Unit (TCU)	Automotive Body Control Module (BCM)
Use Scenario: Supplying 2.8 V to cellular modem baseband processors and GNSS receivers in LTE/V2X telematics gateways. IC Role / Device Role / Timing Role: Secondary LDO generating regulated rail from main 3.3 V domain - not involved in clock generation or data transmission timing. Use Value: 250 mV dropout allows uninterrupted operation during cold-crank events where input drops to 3.05 V, preserving GPS lock and cellular registration.	Use Scenario: Powering LIN transceiver logic and EEPROM interfaces in door module ECUs exposed to under-dash temperature cycling. IC Role / Device Role / Timing Role: Fixed-output voltage regulator for digital logic and non-volatile memory peripherals - no timing or oscillator function. Use Value: −40 °C to +125 °C operation and AEC-Q100 qualification ensure reliable startup and communication after prolonged high-temperature soak in parked vehicles.

Infotainment Power Rail

ADAS Camera Bias Supply

Use Scenario: Providing clean 2.8 V bias to image signal processors (ISPs) and MIPI CSI-2 serializer ICs in rear-view and surround-view camera modules.

IC Role / Device Role / Timing Role: Primary LDO regulator supplying core voltage to ISP and sensor interface logic - not a clock source or timing device.

Use Value: 100 µVrms output noise and 2.0% accuracy ensure minimal ADC quantization error and consistent pixel gain calibration across temperature.

Use Scenario: Powering low-power radar transceiver bias circuits in 24 GHz blind-spot detection modules mounted near wheel wells.

IC Role / Device Role / Timing Role: Standby-mode regulator maintaining bias on RF amplifiers and PLL charge pumps during vehicle sleep cycles.

Use Value: 40 µA quiescent current limits parasitic drain to <1 µA per module - critical for meeting ISO 16750-2 quiescent current budgets.

Telematics Control Unit (TCU)

Automotive Body Control Module (BCM)

Use Scenario: Supplying 2.8 V to cellular modem baseband processors and GNSS receivers in LTE/V2X telematics gateways.

IC Role / Device Role / Timing Role: Secondary LDO generating regulated rail from main 3.3 V domain - not involved in clock generation or data transmission timing.

Use Value: 250 mV dropout allows uninterrupted operation during cold-crank events where input drops to 3.05 V, preserving GPS lock and cellular registration.

Use Scenario: Powering LIN transceiver logic and EEPROM interfaces in door module ECUs exposed to under-dash temperature cycling.

IC Role / Device Role / Timing Role: Fixed-output voltage regulator for digital logic and non-volatile memory peripherals - no timing or oscillator function.

Use Value: −40 °C to +125 °C operation and AEC-Q100 qualification ensure reliable startup and communication after prolonged high-temperature soak in parked vehicles.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
NCV8170ASN280T2G	200 mA output, 220 mV dropout at 200 mA, 25 µA I_Q, same SC70-5 package	Higher current capability suits dual-rail sensor nodes; lower dropout improves margin at low V_in	Select when >100 mA load or tighter dropout is required; verify thermal derating at 125 °C ambient.
TLV73328PDBVR	300 mA output, 175 mV dropout at 300 mA, 30 µA I_Q, SOT-23-5 package (larger footprint)	Higher current and lower dropout but lacks AEC-Q100 qualification and automotive temp range	Acceptable for non-automotive portable instrumentation; not suitable for production automotive designs requiring PPAP.

Compared with NCV612SQ28T2G, NCV8170ASN280T2G offers higher output current and lower dropout in identical packaging - ideal for next-gen modules scaling sensor count, while TLV73328PDBVR provides superior electrical specs but omits automotive qualification and thermal rating, limiting it to industrial or consumer use cases.

Availability

NCV612SQ28T2G is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and telematics control units requiring stable component supply with AEC-Q100 compliance and long-term lifecycle assurance.

Supply support for NCV612SQ28T2G 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 NCV612 series belongs to onsemi's automotive-qualified linear regulator product line - engineered specifically for safety-critical and thermally demanding vehicle subsystems requiring low I_Q, high accuracy, and robust fault protection.

FAQ

What is the maximum input voltage rating for NCV612SQ28T2G?

The NCV612SQ28T2G has an absolute maximum input voltage rating of 6.0 V, as specified in the Maximum Ratings table. Operation above this voltage risks permanent damage. For reliable 2.8 V output, the recommended minimum input is 3.05 V (2.8 V + 250 mV dropout), and typical system design uses 3.3 V or 5.0 V supplies with appropriate derating for thermal and transient conditions.

Does NCV612SQ28T2G require external capacitors, and what values are recommended?

Yes, NCV612SQ28T2G requires both input and output capacitors. The datasheet specifies a minimum 1.0 µF ceramic capacitor for both C_in and C_out, placed as close as possible to the device pins. These capacitors stabilize regulation, suppress noise, and improve transient response. TDK part numbers C2012X5R1C105K and C1608X5R1A105K are explicitly recommended in the Applications Information section.

Is NCV612SQ28T2G pin-compatible with other variants in the NCV612 family?

Yes, all NCV612 variants - including NCV612SQ15T2G, NCV612SQ25T2G, NCV612SQ27T2G, and NCV612SQ28T2G - share identical SC70-5 pinout and package dimensions. The only differences are output voltage and marking code (LHO, LHQ, LHR, LHS respectively); no PCB redesign is needed when swapping between fixed-voltage versions.

What does the "*" symbol next to NCV612SQ28T2G in the ordering table indicate?

The asterisk denotes that NCV612SQ28T2G is marked as "DISCONTINUED" in the official onsemi datasheet revision history (Rev. 5, Nov. 2025). However, Aetrix Electronics maintains active inventory and supply chain support for this part through authorized channels and legacy procurement programs - ensuring continuity for existing automotive designs still in production.

How does the Enable pin function on NCV612SQ28T2G, and what happens when it's left unconnected?

The Enable pin (Pin 3) controls regulator output: pulled high (≥0.95 V) to enable, pulled low (≤0.3 V) to disable (reducing I_Q to <1 µA). If unused, the datasheet explicitly states it must be connected to Vin to guarantee reliable turn-on - leaving it floating may cause erratic behavior due to noise susceptibility and undefined logic state.

NCV612SQ28T2G 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):: 2.8V

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)

NCV612SQ28T2G FAQ

1.How can I place an order for NCV612SQ28T2G through Aetrix?

Please submit a Request for Quotation (RFQ) for NCV612SQ28T2G 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 NCV612SQ28T2G reliable?

The price and inventory of NCV612SQ28T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV612SQ28T2G is usually 5 days.

3.What payment methods are accepted for NCV612SQ28T2G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV612SQ28T2G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NCV612SQ28T2G?

NCV612SQ28T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NCV612SQ28T2G 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 NCV612SQ28T2G?

For technical support, including NCV612SQ28T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV612SQ28T2G requirements.

6.How does Aetrix verify that NCV612SQ28T2G is sourced from the original manufacturer or authorized distributors?

All NCV612SQ28T2G 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 NCV612SQ28T2G meets industry standards.

7.What is the process for return or replacement of NCV612SQ28T2G?

All NCV612SQ28T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCV612SQ28T2G, 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 NCV612SQ28T2G part is unused and in its original packaging.

Return procedure for NCV612SQ28T2G:

1.Submit a request within 90 days.

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

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