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

onsemi NCP706MX22TAG

Name: NCP706MX22TAG
Brand: onsemi
SKU: NCP706MX22TAG
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NCP706MX22TAG

Manufacturer:: onsemi

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

Package:: 8-XFDFN Exposed Pad

Datasheet:: NCP706MX22TAG.pdf

Description:: IC REG LINEAR 2.2V 1A 8XDFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

NCP706MX22TAG from onsemi is a 2.2 V fixed-output, 1 A very low dropout (LDO) linear regulator with enable control, ±1% output voltage accuracy over load/line/temperature, 155 mV max dropout at 1 A, and stable operation with only a 4.7 µF ceramic output capacitor - designed for Li-ion battery-powered portable electronics including smartphones and tablets.

For engineers reviewing the NCP706MX22TAG datasheet, pinout, applications, or equivalent options, key selection considerations include its XDFN8 1.6×1.2 mm package, thermal shutdown and current limit protection, PSRR of 70 dB at 1 kHz, and compatibility with space-constrained, low-noise power rails requiring tight regulation and fast transient response.

Technical Context

The NCP706MX22TAG integrates a PMOS pass transistor enabling ultra-low dropout performance and internal soft-start to limit inrush current during enable assertion. Its remote sense (SNS) pin supports accurate regulation at the load by compensating for PCB trace IR drop.

It operates across an input range of 2.5 V to 5.5 V, delivers up to 1 A continuous output current, and features undervoltage lockout (UVLO) at 1.2–1.9 V, thermal shutdown at 160 °C with 20 °C hysteresis, and shutdown current below 1 µA - making it suitable for always-on subsystems in battery-critical applications.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.2 V ±1% (2.178–2.222 V), guaranteed over −40°C to +125°C, load 0–1 A, and input 2.5–4.5 V.
Max Dropout Voltage	155 mV at 1 A load - enables regulation down to VIN = 2.355 V, critical for extending battery runtime in single-cell Li-ion systems.
Quiescent Current	180–230 µA at zero load - minimizes standby power loss in always-on circuits such as real-time clocks or sensor bias rails.
PSRR	70 dB at 1 kHz - suppresses switching noise from upstream DC-DC converters, improving signal integrity in RF and audio subsystems.
Stability Capacitor	Stable with ≥4.7 µF ceramic output capacitor - eliminates need for high-ESR tantalum, reducing BOM cost and board area.
Enable Threshold	EN high threshold = 0.9 V min; low threshold = 0.4 V max - compatible with 1.8 V and 3.3 V logic I/O without level shifting.
Thermal Resistance	R_JA = 160 °C/W (XDFN8 1.6×1.2 mm) - requires minimal copper pour for thermal relief in compact layouts.

Pinout & Package

XDFN8 1.6 mm × 1.2 mm, 0.4 mm pitch, thermally enhanced package with exposed ground pad (Case 711AS). The 8-pin layout supports high-density placement and efficient heat dissipation via PCB ground plane connection.

Pin/Terminal	Circuit Role	Design Meaning
1, 2 - OUT	Regulated output voltage terminals	Dual parallel outputs reduce current density and trace resistance; connect directly to load rail with low-inductance path.
3 - N/C	Not connected	May be tied to GND to improve thermal conduction from die to PCB; no electrical function.
4 - SNS	Remote output voltage sense	Connects directly to load point to compensate for voltage drop across PCB traces - essential for <±1% regulation accuracy under dynamic load.
5 - GND	Power supply ground reference	Primary return path for load current; must be low-impedance and tied to exposed pad for optimal thermal and noise performance.
6 - EN	Enable control input	Active-high logic input; drives regulator ON when >0.9 V, OFF when <0.4 V; draws ≤500 nA - suitable for microcontroller GPIO control.
7, 8 - IN	Input voltage supply terminals	Dual parallel inputs minimize input trace impedance and improve high-frequency decoupling; require local 4.7 µF ceramic capacitor.
Exposed Pad	Thermal & electrical ground	Electrically connected to GND; must be soldered to large PCB ground plane to achieve rated R_JA and prevent thermal shutdown.

Key Features

Feature	Design Value
Very low dropout	155 mV max at 1 A - sustains regulation with minimal headroom, maximizing usable battery voltage range in 2.5–5.5 V input systems.
±1% output accuracy	Over full temperature (−40°C to +125°C), line, and load - ensures reliable operation of precision analog and digital ICs without post-regulation trimming.
Internal soft-start	200 µs typical turn-on time - prevents output overshoot and limits inrush current into large downstream capacitance, protecting source and load.
High PSRR	70 dB at 1 kHz - rejects ripple from noisy switchers, enabling clean power for sensitive RF, ADC, and PLL circuits.
Robust protection	Thermal shutdown (160 °C), current limiting (1.1 A min), and reverse leakage <5 µA in shutdown - ensures fault resilience in unattended embedded systems.

Applications

Smartphone Core Rail	Tablet Memory Power
Use Scenario: Powers application processor I/O or LPDDR memory interface in battery-operated smartphones where input voltage sags from 4.2 V (full) to 2.8 V (low). IC Role / Device Role / Timing Role: Primary LDO delivering stable 2.2 V to memory termination or core logic, with remote sensing to maintain accuracy at point-of-load. Use Value: Enables uninterrupted operation down to 2.355 V input while maintaining ±1% regulation - extends usable battery capacity by ~8% versus higher-dropout alternatives.	Use Scenario: Supplies 2.2 V to LPDDR4/5 memory VDDQ rails in high-resolution tablets with aggressive power cycling and burst loads. IC Role / Device Role / Timing Role: Low-noise, fast-transient LDO placed adjacent to memory package; uses dual OUT pins and SNS for minimal IR drop and jitter-free timing margins. Use Value: 70 dB PSRR at 1 kHz and ±120 mV load transient response (10 mA ↔ 1 A) preserve signal integrity and meet JEDEC setup/hold timing requirements.
Wearable Sensor Hub	Portable Medical Monitor
Use Scenario: Powers ultra-low-power sensor fusion hub (accelerometer, gyroscope, MCU) in hearables with strict size and quiescent current constraints. IC Role / Device Role / Timing Role: Always-on LDO with 180–230 µA IQ and EN-controlled sleep mode - enables sub-µA system standby while retaining fast wake-up capability. Use Value: 0.1–1 µA shutdown current and 200 µs turn-on time allow rapid sensor activation without compromising battery life over multi-week wear cycles.	Use Scenario: Provides regulated 2.2 V bias for ECG front-end amplifiers and ADCs in FDA-class portable patient monitors requiring clinical-grade stability. IC Role / Device Role / Timing Role: Precision LDO with ±1% accuracy and low 300 µV_rms output noise - ensures baseline stability and SNR >85 dB in analog signal chain. Use Value: Remote sensing (SNS) and 2 mV line/load regulation eliminate measurement drift caused by PCB trace resistance, meeting IEC 60601-1 accuracy requirements.

Smartphone Core Rail

Tablet Memory Power

Use Scenario: Powers application processor I/O or LPDDR memory interface in battery-operated smartphones where input voltage sags from 4.2 V (full) to 2.8 V (low).

IC Role / Device Role / Timing Role: Primary LDO delivering stable 2.2 V to memory termination or core logic, with remote sensing to maintain accuracy at point-of-load.

Use Value: Enables uninterrupted operation down to 2.355 V input while maintaining ±1% regulation - extends usable battery capacity by ~8% versus higher-dropout alternatives.

Use Scenario: Supplies 2.2 V to LPDDR4/5 memory VDDQ rails in high-resolution tablets with aggressive power cycling and burst loads.

IC Role / Device Role / Timing Role: Low-noise, fast-transient LDO placed adjacent to memory package; uses dual OUT pins and SNS for minimal IR drop and jitter-free timing margins.

Use Value: 70 dB PSRR at 1 kHz and ±120 mV load transient response (10 mA ↔ 1 A) preserve signal integrity and meet JEDEC setup/hold timing requirements.

Wearable Sensor Hub

Portable Medical Monitor

Use Scenario: Powers ultra-low-power sensor fusion hub (accelerometer, gyroscope, MCU) in hearables with strict size and quiescent current constraints.

IC Role / Device Role / Timing Role: Always-on LDO with 180–230 µA IQ and EN-controlled sleep mode - enables sub-µA system standby while retaining fast wake-up capability.

Use Value: 0.1–1 µA shutdown current and 200 µs turn-on time allow rapid sensor activation without compromising battery life over multi-week wear cycles.

Use Scenario: Provides regulated 2.2 V bias for ECG front-end amplifiers and ADCs in FDA-class portable patient monitors requiring clinical-grade stability.

IC Role / Device Role / Timing Role: Precision LDO with ±1% accuracy and low 300 µV_rms output noise - ensures baseline stability and SNR >85 dB in analog signal chain.

Use Value: Remote sensing (SNS) and 2 mV line/load regulation eliminate measurement drift caused by PCB trace resistance, meeting IEC 60601-1 accuracy requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Torex XC6210B22MR-G	2.2 V fixed, 1 A, 250 mV dropout (at 1 A), 25 µA IQ, SOT-25 package (2.9×2.8 mm)	Larger footprint, higher dropout, lower IQ - suited for cost-sensitive, non-space-constrained designs with less stringent battery runtime needs.	Select if board area allows larger SOT-25 and dropout margin >250 mV is acceptable; not suitable for Li-ion end-of-discharge operation.
Richtek RT9013-22GJ5	2.2 V fixed, 500 mA, 180 mV dropout (at 500 mA), 65 µA IQ, DFN-6 (2×2 mm)	Lower current rating, smaller package, lower IQ - appropriate for sub-500 mA loads where ultra-low standby power is prioritized over peak current.	Choose when load current ≤500 mA and quiescent current <100 µA is mandatory; insufficient for 1 A applications like memory rails.

Compared with Torex XC6210B22MR-G and Richtek RT9013-22GJ5, the NCP706MX22TAG uniquely combines 1 A output, 155 mV dropout, and XDFN8's 1.6×1.2 mm footprint - enabling higher current density and longer battery life in miniaturized portable systems where both size and efficiency are critical.

Availability

NCP706MX22TAG is available at Aetrix Electronics and suitable for smartphone power management, tablet memory regulation, wearable sensor hubs, portable medical monitors, and other battery-powered applications requiring stable component supply and long-term production continuity.

Supply support for NCP706MX22TAG 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, sensors, and connectivity solutions for automotive, industrial, cloud, and consumer markets.

The NCP706MX22TAG belongs to onsemi's precision LDO family engineered for space-constrained, battery-powered portable electronics - emphasizing ultra-low dropout, high accuracy, and robust protection in miniature packages.

FAQ

What is the minimum output capacitor required for stable operation of the NCP706MX22TAG?

The NCP706MX22TAG requires a minimum 4.7 µF ceramic output capacitor for guaranteed stability across all operating conditions. This value is explicitly specified in the Applications Information section of the datasheet for the NCP706MX22TAG and NCP706MX21TAG variants. Larger values improve PSRR and load transient response but are not required for basic stability.

Does the NCP706MX22TAG support remote voltage sensing, and how is it implemented?

Yes, the NCP706MX22TAG supports remote voltage sensing via its dedicated SNS pin (Pin 4). This pin must be connected directly to the load-side of the output rail to compensate for voltage drop across PCB traces. When used correctly, the SNS feedback loop maintains ±1% output accuracy at the load point - a critical feature for precision analog and high-speed digital applications.

What is the maximum junction temperature and thermal shutdown behavior of the NCP706MX22TAG?

The NCP706MX22TAG has a maximum junction temperature of 150 °C and activates thermal shutdown at 160 °C (with 20 °C hysteresis). Once triggered, the device disables output until junction temperature falls below 140 °C. This protection is fully integrated and requires no external components - ensuring safe operation under overload or poor PCB thermal design.

Can the NCP706MX22TAG be used with input voltages below 2.5 V?

No - the NCP706MX22TAG has a specified minimum operating input voltage of 2.5 V, as confirmed in the Electrical Characteristics table for the 2.2 V version. Operation below this voltage may result in UVLO activation (threshold 1.2–1.9 V) or failure to regulate. For sub-2.5 V operation, consider alternative regulators such as the NCP706MX21TAG (2.1 V version, min VIN = 2.4 V).

How does the enable (EN) pin of the NCP706MX22TAG interface with common logic families?

The EN pin of the NCP706MX22TAG has a guaranteed high threshold of ≥0.9 V and low threshold of ≤0.4 V, making it directly compatible with 1.8 V and 3.3 V CMOS logic outputs without level shifting. Its input current is ≤500 nA, placing negligible load on driving GPIOs - enabling direct control from microcontrollers, PMICs, or sequencers in complex power architectures.

NCP706MX22TAG Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: 8-XFDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 5.5V

Voltage - Output (Min/Fixed):: 2.2V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.3V @ 1A

Current - Output:: 1A

Current - Quiescent (Iq):: 230 µA

Current - Supply (Max):: -

PSRR:: 70dB ~ 60dB (1kHz ~ 10kHz)

Control Features:: Enable

Protection Features:: Over Current, Over Temperature, Soft Start, Under Voltage Lockout (UVLO)

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-XDFN (1.6x1.2)

NCP706MX22TAG FAQ

1.How can I place an order for NCP706MX22TAG through Aetrix?

Please submit a Request for Quotation (RFQ) for NCP706MX22TAG 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 NCP706MX22TAG reliable?

The price and inventory of NCP706MX22TAG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP706MX22TAG is usually 5 days.

3.What payment methods are accepted for NCP706MX22TAG?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP706MX22TAG transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NCP706MX22TAG?

NCP706MX22TAG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NCP706MX22TAG 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 NCP706MX22TAG?

For technical support, including NCP706MX22TAG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP706MX22TAG requirements.

6.How does Aetrix verify that NCP706MX22TAG is sourced from the original manufacturer or authorized distributors?

All NCP706MX22TAG 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 NCP706MX22TAG meets industry standards.

7.What is the process for return or replacement of NCP706MX22TAG?

All NCP706MX22TAG units undergo pre-shipment inspection (PSI). If there is an issue with NCP706MX22TAG, 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 NCP706MX22TAG part is unused and in its original packaging.

Return procedure for NCP706MX22TAG:

1.Submit a request within 90 days.

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

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