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

onsemi NCP612SQ30T1G

Name: NCP612SQ30T1G
Brand: onsemi
SKU: NCP612SQ30T1G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NCP612SQ30T1G

Manufacturer:: onsemi

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

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

Datasheet:: NCP612SQ30T1G.pdf

Description:: IC REG LINEAR 3V 100MA SC88A

Quantity:: RFQ Add To RFQ list

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Product details

Overview

NCP612SQ30T1G from onsemi is a fixed-output CMOS low-dropout linear voltage regulator delivering 3.0 V at up to 100 mA, featuring ultra-low 40 µA quiescent current and 230 mV dropout at full load - designed for battery-powered portable electronics requiring stable, low-power supply regulation.

For engineers reviewing the NCP612SQ30T1G datasheet, pinout, applications, or equivalent options, key selection criteria include output accuracy (±2.0%), SC70-5 thermal performance (R_JA = 300 °C/W), enable-controlled standby mode, and compatibility with low-ESR ceramic capacitors in space-constrained designs.

Technical Context

The NCP612SQ30T1G integrates a PMOS pass transistor, precision voltage reference, error amplifier, and thermal/current-limit protection circuits - enabling stable regulation without external compensation. Its enable input supports logic-level control (V_TH(HI) = 0.95 V, V_TH(LO) = 0.3 V) for system power sequencing.

Designed for operation across −40 °C to +85 °C ambient, it maintains ±2.0% output voltage accuracy over temperature and load (1–100 mA), with line regulation of 1.0–3.0 mV/V and load regulation of 0.3–0.8 mV/mA - optimized for single-cell Li-ion and multi-cell alkaline/battery systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 3.0 V ±2.0% - ensures stable MCU core or sensor rail within tight tolerance across temperature and load.
Max Output Current	100 mA - sufficient for low-power microcontrollers, RF transceivers, and analog sensors in portable devices.
Quiescent Current	40 µA typical - minimizes battery drain during sleep/standby, extending runtime in always-on applications.
Dropout Voltage	230 mV at 100 mA - enables regulation down to ~3.23 V input, supporting single-cell Li-ion (3.0–4.2 V) operation.
Input Voltage Range	0–6.0 V - compatible with common battery chemistries and intermediate supply rails without external clamping.
Thermal Shutdown	Activates at ~160 °C - protects device and PCB during overload or poor heatsinking conditions.
Package	SC70-5 (SOT-353) - 2.0 × 2.1 mm footprint ideal for compact handheld and wearable PCB layouts.

Pinout & Package

The NCP612SQ30T1G is housed in the SC70-5 (SOT-353) surface-mount package - a 5-pin, lead-free micro-miniature outline with 0.65 mm pitch and exposed pad not present.

Pin/Terminal	Circuit Role	Design Meaning
1	Vin	Positive input supply - accepts 0–6.0 V; requires local 1.0 µF decoupling capacitor placed adjacent to pin.
2	Gnd	Power ground reference - must connect to low-impedance PCB ground plane to ensure noise immunity and thermal stability.
3	Enable	Logic-controlled ON/OFF input - pulled high to Vin for operation; pulled low (<0.3 V) disables output and reduces I_Q to <0.03 µA.
4	N/C	No internal connection - left unconnected; no routing or termination required on PCB.
5	Vout	Regulated 3.0 V output - drives load directly; requires 1.0 µF ceramic output capacitor for stability and transient response.

Key Features

Feature	Design Value
Ultra-low quiescent current	40 µA typical - enables >1-year battery life in coin-cell–powered IoT sensors with periodic wake-up cycles.
Low dropout architecture	230 mV @ 100 mA - sustains regulation through deep battery discharge, avoiding premature system shutdown.
High output accuracy	±2.0% over −40 °C to +85 °C - eliminates need for post-regulation trimming in precision analog or ADC reference applications.
Enable-controlled shutdown	Logic-compatible input with 0.95 V turn-on threshold - simplifies integration with GPIOs of low-voltage MCUs without level-shifting.
Ceramic capacitor stability	Stable with 1.0 µF X5R/X7R ceramics (ESR 1–5 Ω) - reduces BOM cost and board area vs. tantalum alternatives.

Applications

Wearable Health Monitor	Bluetooth LE Sensor Node
Use Scenario: Continuous ECG/PPG signal acquisition powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Primary 3.0 V supply for analog front-end and BLE SoC during active sensing and radio transmit bursts. Use Value: 40 µA I_Q extends battery life beyond 12 months; 230 mV dropout allows operation until battery reaches 3.23 V.	Use Scenario: Battery-powered environmental sensor transmitting temperature/humidity via Bluetooth Low Energy every 2 seconds. IC Role / Device Role / Timing Role: Regulated 3.0 V rail for sensor IC, microcontroller, and BLE radio during short-duration active cycles. Use Value: Enable pin synchronizes power delivery with MCU wake-up, reducing average system current to <10 µA in sleep mode.
Industrial Handheld Scanner	Smart Remote Control
Use Scenario: Rugged barcode scanner using dual AA alkaline cells with intermittent laser and decode processing. IC Role / Device Role / Timing Role: Main 3.0 V supply for imaging sensor, decoder ASIC, and display driver under pulsed 80 mA peak loads. Use Value: 0.3–0.8 mV/mA load regulation ensures <10 mV output shift during laser activation, preventing decode errors.	Use Scenario: IR/RF remote with motion wake-up and voice command capability, powered by AAA batteries. IC Role / Device Role / Timing Role: Always-on 3.0 V supply for accelerometer, voice codec, and low-power MCU in sub-µA deep-sleep state. Use Value: ±2.0% output accuracy guarantees consistent microphone bias and ADC reference across battery voltage range (4.5–1.8 V).

Wearable Health Monitor

Bluetooth LE Sensor Node

Use Scenario: Continuous ECG/PPG signal acquisition powered by CR2032 coin cell.

IC Role / Device Role / Timing Role: Primary 3.0 V supply for analog front-end and BLE SoC during active sensing and radio transmit bursts.

Use Value: 40 µA I_Q extends battery life beyond 12 months; 230 mV dropout allows operation until battery reaches 3.23 V.

Use Scenario: Battery-powered environmental sensor transmitting temperature/humidity via Bluetooth Low Energy every 2 seconds.

IC Role / Device Role / Timing Role: Regulated 3.0 V rail for sensor IC, microcontroller, and BLE radio during short-duration active cycles.

Use Value: Enable pin synchronizes power delivery with MCU wake-up, reducing average system current to <10 µA in sleep mode.

Industrial Handheld Scanner

Smart Remote Control

Use Scenario: Rugged barcode scanner using dual AA alkaline cells with intermittent laser and decode processing.

IC Role / Device Role / Timing Role: Main 3.0 V supply for imaging sensor, decoder ASIC, and display driver under pulsed 80 mA peak loads.

Use Value: 0.3–0.8 mV/mA load regulation ensures <10 mV output shift during laser activation, preventing decode errors.

Use Scenario: IR/RF remote with motion wake-up and voice command capability, powered by AAA batteries.

IC Role / Device Role / Timing Role: Always-on 3.0 V supply for accelerometer, voice codec, and low-power MCU in sub-µA deep-sleep state.

Use Value: ±2.0% output accuracy guarantees consistent microphone bias and ADC reference across battery voltage range (4.5–1.8 V).

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700T-3002E/MB	300 mA rated, 1.6 µA I_Q, SOT-23-5 package - higher current but larger footprint and lower dropout (600 mV @ 250 mA).	Supports higher-current peripherals (e.g., LCD backlight); less suitable for ultra-low-I_Q coin-cell use cases.	Select when >100 mA load or smaller dropout at higher currents is required; verify PCB layout change for SOT-23-5.
AP2210K-3.0TRG1	150 mA rated, 50 µA I_Q, SOT-23-5 - similar quiescent current but wider input range (2.0–6.5 V) and no enable pin.	Lacks enable control; requires external logic for power gating - unsuitable for systems needing precise wake/sleep sequencing.	Choose only if enable functionality is unnecessary and SOT-23-5 mounting is preferred over SC70-5 space constraints.

Compared with MCP1700T-3002E/MB and AP2210K-3.0TRG1, the NCP612SQ30T1G offers the smallest footprint (SC70-5), lowest guaranteed I_Q in its class, and integrated enable - making it optimal for miniaturized, battery-lifetime-critical applications where 100 mA suffices.

Availability

NCP612SQ30T1G is available at Aetrix Electronics and suitable for wearable health monitors, Bluetooth LE sensor nodes, and industrial handheld scanners requiring stable component supply with long-term lifecycle support.

Supply support for NCP612SQ30T1G 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 specializing in energy-efficient power management, analog, and sensor solutions for automotive, industrial, and portable electronics.

The NCP612SQ30T1G belongs to onsemi's NCP612 series of ultra-low-I_Q LDOs - engineered specifically for battery-powered handheld equipment where minimal standby current and small form factor are critical design requirements.

FAQ

What is the maximum input voltage rating for the NCP612SQ30T1G?

The NCP612SQ30T1G has an absolute maximum input voltage of 6.0 V. Operation above this level risks permanent damage. For reliable long-term use, keep Vin ≤ 6.0 V - especially important in battery-fed systems where charging may raise cell voltage above nominal (e.g., Li-ion up to 4.2 V).

Does the NCP612SQ30T1G require an external capacitor on the Enable pin?

No, the NCP612SQ30T1G does not require an external capacitor on the Enable pin. The Enable input is CMOS-compatible and functions as a digital control signal; it should be driven directly by a GPIO or logic gate. If unused, Enable must be tied to Vin - floating is not permitted.

Can the NCP612SQ30T1G operate with a 1.0 µF ceramic output capacitor?

Yes, the NCP612SQ30T1G is explicitly designed to be stable with a 1.0 µF ceramic capacitor (X5R/X7R dielectric, ESR 1–5 Ω) on the Vout pin. This eliminates the need for larger or more expensive tantalum capacitors and simplifies layout in space-constrained designs.

What is the thermal shutdown threshold of the NCP612SQ30T1G?

The NCP612SQ30T1G activates internal thermal shutdown at approximately 160 °C junction temperature. Once triggered, the device disables output and remains off until junction temperature falls below the hysteresis threshold (~140 °C), protecting against sustained overloads or inadequate PCB copper area.

Is the NCP612SQ30T1G pin-compatible with other SC70-5 LDOs like the MCP1700?

No, the NCP612SQ30T1G is not pin-compatible with the MCP1700 series. While both use SC70-5/SOT-353 packages, their pinouts differ: NCP612SQ30T1G uses Pin 1=Vin, Pin 2=Gnd, Pin 3=Enable, Pin 4=N/C, Pin 5=Vout; MCP1700 uses Pin 1=Gnd, Pin 2=Vout, Pin 3=Vin, Pin 4=N/C, Pin 5=EN - requiring PCB redesign for substitution.

NCP612SQ30T1G 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):: 3V

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 ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

NCP612SQ30T1G FAQ

1.How can I place an order for NCP612SQ30T1G through Aetrix?

Please submit a Request for Quotation (RFQ) for NCP612SQ30T1G 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 NCP612SQ30T1G reliable?

The price and inventory of NCP612SQ30T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP612SQ30T1G is usually 5 days.

3.What payment methods are accepted for NCP612SQ30T1G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP612SQ30T1G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NCP612SQ30T1G?

NCP612SQ30T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NCP612SQ30T1G 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 NCP612SQ30T1G?

For technical support, including NCP612SQ30T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP612SQ30T1G requirements.

6.How does Aetrix verify that NCP612SQ30T1G is sourced from the original manufacturer or authorized distributors?

All NCP612SQ30T1G 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 NCP612SQ30T1G meets industry standards.

7.What is the process for return or replacement of NCP612SQ30T1G?

All NCP612SQ30T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP612SQ30T1G, 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 NCP612SQ30T1G part is unused and in its original packaging.

Return procedure for NCP612SQ30T1G:

1.Submit a request within 90 days.

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

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