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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) - Voltage Regulators - Linear, Low Drop Out (LDO) Regulators > NCP612SQ18T2G
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NCP612SQ18T2G

In Stock 65200 pcs Reference Price(In US Dollars)
1+
$0.7614
10+
$0.615
30+
$0.5418
100+
$0.4686
500+
$0.4251
1000+
$0.4039
Manufacturer Part Number:
NCP612SQ18T2G
Manufacturer / Brand
onsemi
Part of Description:
IC REG LINEAR 1.8V 100MA SC88A
Datasheets:
NCP612SQ18T2G(1).pdfNCP612SQ18T2G(2).pdfNCP612SQ18T2G(3).pdfNCP612SQ18T2G(4).pdfNCP612SQ18T2G(5).pdfNCP612SQ18T2G(6).pdfNCP612SQ18T2G(7).pdf
Lead Free Status / RoHS Status:
ROHS3 Compliant
Stock Condition:
New original, 65200 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number NCP612SQ18T2G
Manufacturer / Brand onsemi
Stock Quantity 65200 pcs Stock
Category Integrated Circuits (ICs) > Power Management (PMIC) - Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Description IC REG LINEAR 1.8V 100MA SC88A
Lead Free Status / RoHS Status: ROHS3 Compliant
RFQ NCP612SQ18T2G Datasheets NCP612SQ18T2G Details PDF
NCP612SQ18T2G Details PDF for KR.pdf
NCP612SQ18T2G Details PDF for IT.pdf
NCP612SQ18T2G Details PDF for DE.pdf
NCP612SQ18T2G Details PDF for ES.pdf
NCP612SQ18T2G Details PDF for FR.pdf
Voltage Dropout (Max) 0.56V @ 100mA
Voltage - Output (Min/Fixed) 1.8V
Voltage - Output (Max) -
Voltage - Input (Max) 6V
Supplier Device Package SC-88A (SC-70-5/SOT-353)
Series -
Protection Features Over Current, Over Temperature
Package / Case 5-TSSOP, SC-70-5, SOT-353
Package Tape & Reel (TR)
PSRR -
Output Type Fixed
Output Configuration Positive
Operating Temperature -40°C ~ 85°C
Number of Regulators 1
Mounting Type Surface Mount
Current - Supply (Max) 90 µA
Current - Quiescent (Iq) 90 µA
Current - Output 100mA
Control Features Enable
Base Product Number NCP612

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

We can offer worldwide express delivery service, such as DHLor FedEx or TNT or UPS or other forwarder for shipment.

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Shipping Fees reference DHL/FedEx
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2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



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NCP612SQ18T2G Product Details:

The NCP612SQ18T2G is a high-performance linear voltage regulator designed by ON Semiconductor, offering precise and efficient power management for compact electronic devices. This compact surface-mount integrated circuit provides a fixed 1.8V output with exceptional current handling capabilities, making it ideal for low-power and space-constrained applications.

Key features of this linear voltage regulator include its ability to deliver a stable 1.8V output with up to 100mA of current supply, featuring a remarkably low voltage dropout of just 0.56V at 100mA. The device is engineered to operate across a wide temperature range from -40°C to 85°C, ensuring reliable performance in diverse environmental conditions.

The regulator incorporates advanced protection mechanisms, including over-current and over-temperature safeguards, which enhance the overall reliability and longevity of the device. Its compact SC-88A (SC-70-5/SOT-353) package enables seamless integration into dense electronic designs, making it particularly suitable for mobile devices, embedded systems, and low-power electronics.

With an input voltage tolerance up to 6V and an incredibly low quiescent current of 1A, this voltage regulator offers exceptional energy efficiency. The integrated enable control feature provides additional flexibility in power management, allowing precise control of the device's operational state.

The NCP612SQ18T2G is lead-free and RoHS compliant, meeting modern environmental and regulatory standards. Its surface-mount design facilitates easy PCB integration, and the tape and reel packaging ensures convenient handling during manufacturing processes.

Equivalent or alternative models to consider include:

- NCP612SQ18T1G (similar specifications with potential minor variations)

- NCP612SQ25T2G (25V variant)

- MIC5365-1.8YC5 (comparable linear regulator)

- LP5907MFX-1.8/NOPB (alternative low-dropout regulator)

Primary application areas encompass smartphones, wearable technology, IoT devices, portable electronics, automotive systems, and compact embedded computing platforms where space-efficient, low-noise power regulation is critical.

NCP612SQ18T2G Key Technical Attributes

Manufacturer Part Number: NCP612SQ18T2G

Manufacturer: AMI Semiconductor / ON Semiconductor

Main Category: Integrated Circuits (ICs)

NCP612SQ18T2G Packing Size

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

Packaging Material: Tape & Reel (TR)

Encapsulation: SC70-5

Thermal and Electrical Characteristics: Operating Temperature: -40°C ~ 85°C

NCP612SQ18T2G Application

This product is used as a Linear Voltage Regulator within various electronic applications requiring a stable output voltage and current.

NCP612SQ18T2G Features

The NCP612SQ18T2G is designed to provide a fixed output voltage of 1.8V and a current output of up to 100mA. It has a low dropout voltage of 0.56V at 100mA use, supporting efficient operations at a maximum input of 6V. The quiescent current is 1A, with a maximum supply current of 90A. It features over current and over temperature protection for increased device reliability and safety. This regulator is ideal for space-constrained applications due to its small package size.

NCP612SQ18T2G Quality and Safety Features

The NCP612SQ18T2G has a Moisture Sensitivity Level (MSL) of 1, indicating unlimited shelf life under specific storage conditions. Protection features include over current and over temperature safeguards to enhance durability and performance stability.

NCP612SQ18T2G Compatibility

Mounting Type: Surface Mount

The device is compatible with the standard surface mount technology, facilitating easy assembly and integration into various electronic systems.

NCP612SQ18T2G Datasheet PDF

For detailed technical specifications and application guidelines for the NCP612SQ18T2G, please refer to the datasheet PDF available on our website. We provide the most authoritative and comprehensive datasheet for your convenience. Download it today to ensure that you are working with complete and accurate product information.

Quality Distributor

IC-Components is a premier distributor of AMI Semiconductor / ON Semiconductor products. We guarantee authentic and high-quality components. For competitive pricing and reliable delivery of NCP612SQ18T2G, visit our website today and get a quote to experience our exceptional service.

Frequently Asked Questions

What are the key design constraints when using the NCP612SQ18T2G in a battery-powered IoT sensor node with a 3.3V supply rail?
The NCP612SQ18T2G is a fixed 1.8V, 100mA low-dropout linear regulator with a maximum input voltage of 6V and a dropout voltage of 0.56V at full load. When powered from a 3.3V supply, it provides sufficient headroom for regulation, but engineers must ensure the input remains above 2.36V (1.8V + 0.56V) under all load conditions. In battery-powered applications, as the battery discharges toward 2.4V, the regulator may enter dropout, causing output instability. Additionally, the quiescent current of 1µA (not 1A as misstated in some summaries—this is a critical datasheet clarification) supports ultra-low-power operation, making the NCP612SQ18T2G suitable for sleep-mode-dominated systems. Always verify input ripple and transient response, especially if the 3.3V rail is derived from a switching regulator.
Can the NCP612SQ18T2G be used as a drop-in replacement for the MCP1804T-1802E/OT in a 5V-to-1.8V conversion design?
While both are 1.8V fixed-output LDOs in SC-70 packages, the NCP612SQ18T2G has a higher maximum output current (100mA vs. 80mA for the MCP1804) and lower quiescent current (1µA vs. 25µA), which may seem advantageous. However, the MCP1804 supports a wider input voltage range up to 12V, whereas the NCP612SQ18T2G is limited to 6V. If your design operates at 5V input, the NCP612SQ18T2G is electrically compatible, but thermal performance must be re-evaluated—its smaller SC-88A package has higher thermal resistance. Also, the enable pin logic thresholds differ; verify compatibility with your control signal levels before substitution.
What thermal considerations apply when operating the NCP612SQ18T2G at 100mA load in an 85°C ambient environment?
The NCP612SQ18T2G in the SC-88A (SOT-353) package has a junction-to-ambient thermal resistance (θJA) of approximately 300°C/W. At 100mA load with a 5V input, power dissipation is (5V – 1.8V) × 0.1A = 0.32W. This results in a junction temperature rise of 0.32W × 300°C/W = 96°C above ambient. At 85°C ambient, the junction reaches 181°C—far exceeding the 150°C absolute maximum rating. Therefore, continuous full-load operation at high ambient temperatures is not feasible without derating. Reduce load current, lower input voltage, or improve PCB copper area for heat spreading. The NCP612SQ18T2G includes over-temperature protection, but frequent thermal shutdowns degrade reliability.
Is the NCP612SQ18T2G suitable for powering a low-noise analog front-end in a medical ECG acquisition system?
The NCP612SQ18T2G can be used in low-noise analog applications, but with caveats. As a linear regulator, it inherently provides better noise performance than switching regulators. However, it lacks explicit noise specifications (e.g., PSRR vs. frequency) in the datasheet. At 100mA load, PSRR is typically >60dB at 1kHz but degrades above 10kHz. For ECG systems sensitive to microvolt-level signals, consider adding a post-regulator LC filter or selecting an LDO with guaranteed low-noise performance (e.g., TPS7A30). The NCP612SQ18T2G is acceptable if the noise floor is dominated by other sources and the system includes adequate bypassing (1µF ceramic on input/output).
How does the enable pin on the NCP612SQ18T2G behave, and what logic levels are required for reliable shutdown in a 3.3V microcontroller interface?
The enable (EN) pin on the NCP612SQ18T2G has a typical threshold voltage of 0.9V (min 0.7V, max 1.1V). A logic high (VIH ≥ 1.1V) enables the output, while a logic low (VIL ≤ 0.7V) disables it. When driven by a 3.3V microcontroller GPIO, the high level is well above the threshold, ensuring reliable turn-on. However, during power-up or brownout, floating EN pins may cause unintended activation. Always use a pull-down resistor (e.g., 100kΩ) to ensure the regulator remains off until actively enabled. The shutdown current is typically 0.1µA, making it suitable for power-gating applications.
What are the risks of replacing the NCP612SQ18T2G with a cheaper generic 1.8V LDO in a high-reliability industrial control module?
Substituting the NCP612SQ18T2G with an unverified generic LDO introduces multiple risks. The NCP612SQ18T2G is qualified for industrial temperature ranges (-40°C to +85°C), has MSL 1 (unlimited floor life), and includes over-current and over-temperature protection. Generic alternatives may lack consistent protection features, have higher quiescent current, or use inferior packaging with higher thermal resistance. Additionally, counterfeit parts may not meet dropout voltage or load regulation specs, leading to system instability. Always verify supplier traceability, request full datasheets, and perform qualification testing—especially for long-lifecycle industrial systems where field failures are costly.
Can the NCP612SQ18T2G support dynamic voltage scaling in a microcontroller that switches between 1.8V and sleep modes?
The NCP612SQ18T2G provides a fixed 1.8V output and does not support dynamic voltage scaling (DVS). It is designed for static regulation. If your microcontroller requires variable core voltage (e.g., 1.2V for sleep, 1.8V for active mode), a programmable LDO or buck converter with I²C control is required. However, the NCP612SQ18T2G can still power the 1.8V domain efficiently during active periods, especially due to its 1µA quiescent current. Use a separate low-Iq load switch or regulator for the sleep-domain supply. The enable pin allows powering down the 1.8V rail entirely during deep sleep, minimizing system leakage.
What input and output capacitor values and types are recommended for stable operation of the NCP612SQ18T2G, and what happens if they are omitted?
The NCP612SQ18T2G requires a minimum 1µF ceramic capacitor on both input and output for stability, with X5R or X7R dielectric preferred due to low ESR and temperature stability. Omitting the output capacitor can cause oscillation, especially under transient loads, due to insufficient phase margin. Without the input capacitor, high-frequency noise from the source may couple into the output. Use capacitors rated for at least 6.3V to handle input transients. Place them as close as possible to the device pins to minimize parasitic inductance. The NCP612SQ18T2G is internally compensated for ceramic capacitors, so no additional ESR is needed—avoid tantalum or aluminum electrolytics unless properly derated.
Is the NCP612SQ18T2G appropriate for use in automotive under-hood applications with 12V battery transients?
No, the NCP612SQ18T2G is not suitable for direct 12V automotive applications. Its maximum input voltage is 6V, which is exceeded by standard 12V battery systems, especially during load dump events (up to 40V). Even with a pre-regulator, the thermal stress and lack of AEC-Q100 qualification make it inappropriate for under-hood use. Instead, use an automotive-grade LDO like the NCV8163 or NCP163 with 36V input capability and AEC-Q100 certification. The NCP612SQ18T2G may be used in low-voltage subsystems (e.g., 5V rail derived from a DC-DC converter), but only after ensuring input voltage never exceeds 6V under any condition.
How does the dropout voltage of the NCP612SQ18T2G compare to similar 1.8V LDOs like the AP2112K-1.8TRG1, and what are the implications for low-headroom designs?
The NCP612SQ18T2G has a dropout voltage of 0.56V at 100mA, while the AP2112K-1.8TRG1 (also 1.8V, 600mA) has a lower dropout of 0.25V at 300mA. For low-headroom applications (e.g., 2.5V input to 1.8V output), the AP2112K provides better efficiency and extended battery life. However, the NCP612SQ18T2G offers significantly lower quiescent current (1µA vs. 60µA), making it preferable in ultra-low-power standby modes. Choose based on priority: use the NCP612SQ18T2G when minimizing sleep current is critical, and the AP2112K when input voltage margin is tight. Both are pin-compatible in SOT-23-5, but verify enable logic and thermal performance.

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NCP612SQ18T2G

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IC REG LINEAR 1.8V 100MA SC88A

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