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

onsemi NCP562SQ21T1G

Name: NCP562SQ21T1G
Brand: onsemi
SKU: NCP562SQ21T1G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NCP562SQ21T1G

Manufacturer:: onsemi

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

Package:: SC-82A, SOT-343

Datasheet:: NCP562SQ21T1G.pdf

Description:: IC REG LINEAR 2.1V 80MA SC82AB

Quantity:: RFQ Add To RFQ list

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Product details

Overview

NCP562SQ21T1G from onsemi is a fixed-output, low-dropout linear voltage regulator with 2.1 V nominal output, 80 mA output current capability, ultra-low 2.5 µA quiescent current, and enable control-designed for battery-powered portable instrumentation requiring stable low-voltage supply under light-load conditions.

For engineers reviewing the NCP562SQ21T1G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 80 mA (230 mV), ±2.0% output accuracy over temperature, SC82-AB package footprint compatibility, and enable threshold validation for system-level power sequencing.

Technical Context

The NCP562SQ21T1G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and thermal/overcurrent protection circuits in a single die. Its enable input provides active-high logic control (1.3 V turn-on threshold) to place the device into standby mode with sub-µA shutdown current.

It operates across −40 °C to +85 °C ambient temperature, supports ceramic output capacitors as low as 0.1 µF, and maintains regulation down to 230 mV dropout at full 80 mA load-enabling efficient operation from single-cell Li-ion or two-cell alkaline sources.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	2.1 V ±2.0% (ensures stable MCU core or sensor bias within tolerance at room and extended temperature)
Max Output Current	80 mA (supports low-power microcontrollers, RF transceivers, or analog front-ends without external boost)
Quiescent Current	2.5 µA typical (extends battery life in always-on monitoring applications)
Dropout Voltage	230 mV at 80 mA (allows operation down to ~2.33 V input, compatible with partially discharged Li-ion cells)
Enable Threshold	V_TH(HI) = 1.3 V, V_TH(LO) = 0.3 V (compatible with 1.8 V or 3.3 V GPIO for clean ON/OFF sequencing)
Operating Temp	−40 °C to +85 °C (meets industrial-grade environmental requirements)
Package	SC82-AB (2.0 × 1.25 mm, 0.65 mm pitch, 4-pin surface-mount-suitable for space-constrained PCBs)

Pinout & Package

SC82-AB package: 4-pin, 2.0 mm × 1.25 mm body, 0.65 mm lead pitch, Pb-free, RoHS-compliant surface-mount package with exposed pad not electrically connected.

Pin/Terminal	Circuit Role	Design Meaning
1	GND	Power ground reference for internal circuitry and output regulation-must be low-impedance connection to PCB ground plane
2	Vin	Input supply pin-accepts 2.4 V to 6.0 V; requires local 1.0 µF decoupling capacitor per datasheet layout guidance
3	Vout	Regulated 2.1 V output-capable of sourcing up to 80 mA with <20 mV load regulation deviation
4	Enable	Active-high digital control input-pulling low disables output and reduces quiescent current to <0.1 µA; floating or unconnected must be tied to Vin

Key Features

Feature	Design Value
Ultra-low I_Q	2.5 µA typical operating current enables multi-year battery life in IoT sensors and wearables
Enable Control	Digital ON/OFF function with defined logic thresholds eliminates need for external MOSFET switch in power-gated subsystems
Ceramic Cap Compatible	Stable with 0.1 µF minimum output capacitance-reduces BOM cost and board area vs. tantalum alternatives
Thermal Protection	Internal shutdown activates at ~160 °C junction temperature-prevents damage during sustained overload or poor heatsinking
±2.0% Output Accuracy	Tight initial tolerance ensures reliable operation of 2.1 V–biased analog circuits without post-production trimming

Applications

Portable Medical Sensors	Wireless Sensor Nodes
Use Scenario: Continuous glucose monitor (CGM) using coin-cell battery and low-power ADC. IC Role / Device Role / Timing Role: Primary 2.1 V supply for analog front-end and BLE SoC core domain. Use Value: 2.5 µA quiescent current extends 3 V CR2032 battery life beyond 2 years; 230 mV dropout allows full discharge utilization.	Use Scenario: Battery-operated environmental node measuring temperature/humidity with periodic LoRaWAN transmission. IC Role / Device Role / Timing Role: Regulated 2.1 V rail for microcontroller, sensor interface, and RF transceiver during active burst. Use Value: Enable pin synchronizes power delivery with wake-up timer-reducing average system current to <1 µA in sleep mode.
Handheld Test Instruments	Industrial Data Loggers
Use Scenario: Pocket-sized multimeter powered by two AA alkaline cells. IC Role / Device Role / Timing Role: Precision 2.1 V reference and supply for 16-bit SAR ADC and display driver. Use Value: ±2.0% output accuracy and <100 µV_RMS noise ensure measurement repeatability without calibration drift.	Use Scenario: Remote vibration logger deployed in factory machinery with 10-year maintenance interval. IC Role / Device Role / Timing Role: Main 2.1 V supply for microcontroller, MEMS accelerometer, and nonvolatile memory. Use Value: −40 °C to +85 °C rating and thermal shutdown ensure reliability in uncontrolled ambient environments.

Portable Medical Sensors

Wireless Sensor Nodes

Use Scenario: Continuous glucose monitor (CGM) using coin-cell battery and low-power ADC.

IC Role / Device Role / Timing Role: Primary 2.1 V supply for analog front-end and BLE SoC core domain.

Use Value: 2.5 µA quiescent current extends 3 V CR2032 battery life beyond 2 years; 230 mV dropout allows full discharge utilization.

Use Scenario: Battery-operated environmental node measuring temperature/humidity with periodic LoRaWAN transmission.

IC Role / Device Role / Timing Role: Regulated 2.1 V rail for microcontroller, sensor interface, and RF transceiver during active burst.

Use Value: Enable pin synchronizes power delivery with wake-up timer-reducing average system current to <1 µA in sleep mode.

Handheld Test Instruments

Industrial Data Loggers

Use Scenario: Pocket-sized multimeter powered by two AA alkaline cells.

IC Role / Device Role / Timing Role: Precision 2.1 V reference and supply for 16-bit SAR ADC and display driver.

Use Value: ±2.0% output accuracy and <100 µV_RMS noise ensure measurement repeatability without calibration drift.

Use Scenario: Remote vibration logger deployed in factory machinery with 10-year maintenance interval.

IC Role / Device Role / Timing Role: Main 2.1 V supply for microcontroller, MEMS accelerometer, and nonvolatile memory.

Use Value: −40 °C to +85 °C rating and thermal shutdown ensure reliability in uncontrolled ambient environments.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700T-2102E/TT	2.1 V fixed, 250 mA max, 1.6 µA I_Q, SOT-23-3 (no enable)	No enable pin; requires external logic or resistor tie-high for always-on use	Select when higher current headroom is needed and enable control is unnecessary
TPS70621DBVR	2.1 V fixed, 150 mA max, 4.5 µA I_Q, SOT-23-5 (enable + active-low reset)	Higher I_Q, includes active-low reset output but larger footprint and different pinout	Select when system-level reset signaling is required and 2 µA extra quiescent current is acceptable

Compared with MCP1700T-2102E/TT and TPS70621DBVR, the NCP562SQ21T1G offers optimal balance of ultra-low I_Q, integrated enable, compact SC82-AB footprint, and guaranteed 80 mA performance-making it preferred for space- and battery-life–constrained portable instrumentation where precise 2.1 V regulation is critical.

Availability

NCP562SQ21T1G is available at Aetrix Electronics and suitable for portable medical sensors, wireless sensor nodes, handheld test instruments, and industrial data loggers requiring stable component supply with long-term lifecycle support.

Supply support for NCP562SQ21T1G 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 (formerly ON Semiconductor) is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.

The NCP562 series belongs to onsemi's low-power linear regulator product line, engineered specifically for battery-powered portable equipment demanding ultra-low quiescent current, small footprint, and high output accuracy without external components.

FAQ

What is the maximum input voltage for the NCP562SQ21T1G?

The NCP562SQ21T1G supports a maximum input voltage of 6.0 V, as specified in its Absolute Maximum Ratings table. Operation above this level risks permanent damage. For reliable 2.1 V output regulation, the recommended minimum input is Vin ≥ Vout + dropout (≥2.33 V at 80 mA), and typical design margins use Vin = 2.5 V to 5.5 V to balance efficiency and headroom.

Does the NCP562SQ21T1G require an external capacitor on the Enable pin?

No, the NCP562SQ21T1G does not require an external capacitor on the Enable pin. The Enable input is a CMOS-compatible digital control signal with defined DC thresholds (1.3 V turn-on, 0.3 V turn-off); it draws negligible current and is not sensitive to noise in typical PCB layouts. If routing near noisy signals, a small 100 pF bypass capacitor may be added-but it is not specified or required in the datasheet.

Can the NCP562SQ21T1G be used with a 0.1 µF ceramic output capacitor?

Yes, the NCP562SQ21T1G is explicitly designed and tested to be stable with a minimum 0.1 µF ceramic output capacitor, as confirmed in both the datasheet's "Applications Information" and "Electrical Characteristics" sections. Larger values (e.g., 1.0 µF) improve transient response and noise rejection but are not required for basic regulation stability.

What is the thermal shutdown trigger temperature for the NCP562SQ21T1G?

The NCP562SQ21T1G incorporates internal thermal protection that activates at approximately 160 °C junction temperature, as stated in the "Definitions" section of the datasheet. Once triggered, the device shuts down the output and remains off until the junction cools below the hysteresis threshold (~140 °C), after which normal operation resumes automatically-no external intervention is needed.

Is the NCP562SQ21T1G pin-compatible with the NCP563SQ21T1G?

No, the NCP562SQ21T1G is not pin-compatible with the NCP563SQ21T1G. While both share the SC82-AB package and same pin 1–3 assignments (GND, Vin, Vout), Pin 4 differs: NCP562SQ21T1G uses Pin 4 as Enable, whereas NCP563SQ21T1G leaves Pin 4 as No Connect (N/C). Interchanging them without board revision will result in undefined behavior or failure to enable the regulator.

NCP562SQ21T1G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

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

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):: 2.1V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.55V @ 80mA

Current - Output:: 80mA

Current - Quiescent (Iq):: 1 µA

Current - Supply (Max):: 6 µA

PSRR:: -

Control Features:: Enable

Protection Features:: Over Current, Over Temperature

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SC-82AB

NCP562SQ21T1G FAQ

1.How can I place an order for NCP562SQ21T1G through Aetrix?

Please submit a Request for Quotation (RFQ) for NCP562SQ21T1G 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 NCP562SQ21T1G reliable?

The price and inventory of NCP562SQ21T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP562SQ21T1G is usually 5 days.

3.What payment methods are accepted for NCP562SQ21T1G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP562SQ21T1G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NCP562SQ21T1G?

NCP562SQ21T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NCP562SQ21T1G 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 NCP562SQ21T1G?

For technical support, including NCP562SQ21T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP562SQ21T1G requirements.

6.How does Aetrix verify that NCP562SQ21T1G is sourced from the original manufacturer or authorized distributors?

All NCP562SQ21T1G 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 NCP562SQ21T1G meets industry standards.

7.What is the process for return or replacement of NCP562SQ21T1G?

All NCP562SQ21T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP562SQ21T1G, 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 NCP562SQ21T1G part is unused and in its original packaging.

Return procedure for NCP562SQ21T1G:

1.Submit a request within 90 days.

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

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