Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Infineon Technologies IFX54441LDVXUMA1

Name: IFX54441LDVXUMA1
Brand: Infineon Technologies
SKU: IFX54441LDVXUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: IFX54441LDVXUMA1

Manufacturer:: Infineon Technologies

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

Package:: 10-TFDFN Exposed Pad

Datasheet:: IFX54441LDVXUMA1.pdf

Description:: IC REG LIN POS ADJ 300MA TSON-10

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,562

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

IFX54441LDVXUMA1 from Infineon Technologies is a 300mA, low-noise, wide-input LDO voltage regulator in PG-TSON-10 exposed pad package, delivering fixed 3.3V output with 2.5% accuracy, 270mV dropout at full load, and 24 µVRMS noise (10 Hz–100 kHz) when used with 0.01 µF bypass capacitor. It serves as a stable power source for microcontrollers and image sensors in battery-powered, noise-sensitive systems.

For engineers reviewing the IFX54441LDVXUMA1 datasheet, IFX54441LDVXUMA1 pinout, IFX54441LDVXUMA1 application, or IFX54441LDVXUMA1 equivalent, key selection considerations include its 1.8–20 V input range, reverse-battery protection, <1 µA shutdown current, Kelvin sense capability for remote load regulation, and compatibility with ceramic, tantalum, or aluminum output capacitors ≥3.3 µF.

Technical Context

The IFX54441LDVXUMA1 implements a micropower error amplifier with 1.22 V internal reference, enabling precise 3.3 V regulation across –40 °C to +125 °C and full load range. Its saturation control and thermal shutdown circuitry activate at T_j ≥ 150 °C, while overcurrent protection limits output current to prevent latch-up under short-circuit conditions.

It features integrated reverse-battery protection that blocks reverse current flow from OUT to IN during polarity reversal, eliminating need for external diodes. The BYP pin supports external 0.01 µF capacitor to shunt reference noise, reducing output RMS noise to 24 µV - critical for radar front-ends and CMOS image sensor biasing.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Current	300 mA maximum continuous - supports mid-power MCU cores and peripheral clusters without thermal derating in TSON-10 with proper PCB copper pour.
Dropout Voltage	270 mV at 300 mA - enables regulation down to 3.57 V input for 3.3 V output, extending usable battery life in single-cell Li-ion or dual-cell alkaline systems.
Output Noise	24 µV_RMS (10 Hz–100 kHz) with 0.01 µF BYP cap - meets stringent SNR requirements of analog front-ends in automotive radar and medical imaging sensors.
Quiescent Current	30 µA typical - minimizes standby power loss in always-on subsystems such as real-time clock domains or wake-on-event circuits.
Input Voltage Range	1.8 V to 20 V - accommodates wide supply variations including unregulated 12 V rails, automotive transients, and multi-cell battery stacks.
Output Accuracy	±2.5% over full temperature and load - ensures reliable logic-level compliance for 3.3 V I/O interfaces without margining overhead.
Shutdown Current	<1 µA - enables deep-sleep modes in portable instrumentation where µA-level leakage dominates system budget.

Pinout & Package

IFX54441LDVXUMA1 is housed in PG-TSON-10 exposed pad package (3 mm × 3 mm, 0.65 mm pitch), requiring solder connection of Pin 11 (exposed thermal pad) to PCB ground plane and electrical tie to Pin 6 (GND) for optimal thermal resistance (<40 °C/W junction-to-board).

Pin/Terminal	Circuit Role	Design Meaning
1, 2	OUT	Main regulated 3.3 V output; requires ≥3.3 µF ceramic capacitor at pin for stability; connects directly to load or remote sense point.
3, 8	NC	No-connect pins; may be left floating or tied to GND for mechanical reinforcement; no internal connection.
4	SENSE	Kelvin sense input for fixed-output version; improves load regulation by compensating for PCB trace IR drop between OUT and load.
5	BYP	Bypass node for internal reference; 0.01 µF capacitor to OUT reduces output noise to 24 µV_RMS; must remain unconnected if unused.
6	GND	Analog and power ground reference; bottom of feedback divider (for adjustable variant) must connect here for best load regulation.
7	EN	Active-high enable; pulled high to VIN or 5 V logic; sinking <1 µA; floating prohibited - must avoid unintended shutdown.
9, 10	IN	Main input supply (1.8–20 V); reverse-battery protected - blocks current flow if IN < GND, safeguarding downstream circuitry.
11	Tab	Exposed thermal pad; mandatory solder connection to PCB ground plane and tie to Pin 6 for thermal performance and EMI reduction.

Key Features

Feature	Design Value
Reverse Battery Protection	Blocks reverse current flow from OUT to IN during polarity inversion - eliminates need for external series diode and associated 0.3–0.7 V forward drop.
Low-Noise Architecture	24 µV_RMS output noise with 0.01 µF BYP cap - enables direct powering of RF synthesizers and high-resolution ADC references without additional filtering.
Kelvin Sense Capability	SENSE pin allows remote sensing at load terminals - maintains ±2.5% regulation accuracy despite up to 100 mΩ PCB trace resistance between regulator and load.
Capacitor Flexibility	Stable with ≥3.3 µF ceramic, tantalum, or aluminum capacitors - removes ESR dependency, simplifying layout and reducing BOM count versus legacy LDOs.
Micropower Operation	30 µA quiescent current and <1 µA shutdown current - extends battery runtime in IoT edge nodes and portable diagnostic equipment.

Applications

Microcontroller Supply

Battery-Powered Systems

Use Scenario: Powering ARM Cortex-M4-based industrial controller with real-time Ethernet interface and analog sensor front-end.

IC Role / Device Role / Timing Role: Primary 3.3 V domain regulator supplying core logic, peripherals, and ADC reference; provides clean, low-noise rail independent of battery voltage sag.

Use Value: Maintains 3.3 V ±2.5% across 2.5–18 V input range and 10 µA–300 mA load, enabling uninterrupted operation during brown-out and cold-cranking events.

Use Scenario: Portable ultrasound probe with rechargeable Li-ion battery and high-speed image sensor array.

IC Role / Device Role / Timing Role: Low-noise 3.3 V supply for CMOS image sensor bias and digital signal processor I/O, synchronized to frame capture timing.

Use Value: 24 µV_RMS noise floor prevents spurious artifacts in B-mode imaging; 30 µA quiescent current extends probe runtime between charges.

Noise Sensitive Instruments

Radar Applications

Use Scenario: Handheld gas chromatograph with precision 24-bit sigma-delta ADC and thermoelectric cooler driver.

IC Role / Device Role / Timing Role: Dedicated low-noise analog supply for ADC reference and front-end op-amps; isolated from digital switching noise via separate LDO domain.

Use Value: Enables >110 dB SNR in ADC measurements by suppressing broadband noise contributions; Kelvin sense compensates for trace losses in compact PCB layout.

Use Scenario: 77 GHz automotive radar transceiver module requiring ultra-low phase noise local oscillator bias.

IC Role / Device Role / Timing Role: Clean 3.3 V supply for PLL charge pump and VCO tuning circuitry; BYP capacitor suppresses reference-induced jitter.

Use Value: Reduces integrated phase noise by 3–5 dB in 100 Hz–1 MHz offset range, improving radar range resolution and clutter rejection.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLE42754G	500 mA output, 40 µV_RMS noise, 45 µA IQ, PG-TO263-5 package	Higher current, larger thermal footprint; lacks Kelvin sense and BYP pin for noise optimization	Select when higher output current and AEC-Q100 qualification are required; not suitable for ultra-low-noise sensor biasing.
LP5907MFX-3.3/NOPB	250 mA output, 6.5 µV_RMS noise, 25 µA IQ, DSBGA-4 package	Lower noise but lower current and no reverse-battery protection; no SENSE or BYP pins	Select for space-constrained, ultra-low-noise applications where reverse polarity risk is absent and load ≤250 mA.

Compared with TLE42754G and LP5907MFX-3.3/NOPB, IFX54441LDVXUMA1 uniquely balances 300 mA capability, 24 µV_RMS noise (with BYP), Kelvin sensing, and reverse-battery protection in a thermally efficient TSON-10 package - making it optimal for ruggedized portable instruments and radar modules where input fault tolerance and signal integrity are co-prioritized.

Availability

IFX54441LDVXUMA1 is available at Aetrix Electronics and suitable for microcontroller supply, battery-powered systems, noise sensitive instruments, and radar applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.

Supply support for IFX54441LDVXUMA1 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive ICs, and industrial control solutions, with global manufacturing and quality certification to ISO/TS 16949 and ISO 14001 standards.

The IFX54441 belongs to Infineon's wide-input, low-noise LDO product line designed specifically for demanding portable, industrial, and radar applications where input fault resilience, output precision, and spectral purity are jointly critical.

FAQ

What is the minimum output capacitor required for IFX54441LDVXUMA1 stability?

The IFX54441LDVXUMA1 requires a minimum 3.3 µF output capacitor for guaranteed stability across all operating conditions. Ceramic, tantalum, or aluminum capacitors are acceptable - no ESR specification is needed. Larger values improve transient response for pulsed loads, and the device remains stable even with zero-ESR MLCCs due to internal compensation.

Can IFX54441LDVXUMA1 be used with a reverse-connected battery?

Yes - IFX54441LDVXUMA1 integrates reverse-battery protection. When input polarity is inverted (VIN < GND), the device blocks reverse current flow from OUT to IN, preventing damage to itself and downstream circuitry. No external diode is required, preserving efficiency and simplifying design.

How does the SENSE pin improve regulation accuracy?

The SENSE pin enables Kelvin sensing: connecting it directly to the load terminal compensates for voltage drop across PCB traces between the regulator output and load. This maintains ±2.5% output accuracy at the load point, even with up to 100 mΩ trace resistance - critical for precision analog subsystems.

Is an external bypass capacitor required to achieve 24 µVRMS noise?

Yes - the 24 µV_RMS noise specification requires a 0.01 µF capacitor connected between the BYP pin and the OUT pin. Without this capacitor, typical output noise is ~100 µV_RMS. The BYP pin is internally clamped to ±0.6 V, so capacitor voltage rating ≥6.3 V is sufficient; X7R dielectric is recommended for stability.

IFX54441LDVXUMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 10-TFDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Adjustable

Number of Regulators:: 1

Voltage - Input (Max):: 20V

Voltage - Output (Min/Fixed):: 1.22V

Voltage - Output (Max):: 20V

Voltage Dropout (Max):: 0.4V @ 300mA

Current - Output:: 300mA

Current - Quiescent (Iq):: 60 µA

Current - Supply (Max):: 12 mA

PSRR:: 65dB (120Hz)

Control Features:: Enable

Protection Features:: Over Current, Over Temperature, Reverse Polarity

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-TSON-10

IFX54441LDVXUMA1 FAQ

1.How can I place an order for IFX54441LDVXUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for IFX54441LDVXUMA1 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 IFX54441LDVXUMA1 reliable?

The price and inventory of IFX54441LDVXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IFX54441LDVXUMA1 is usually 5 days.

3.What payment methods are accepted for IFX54441LDVXUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IFX54441LDVXUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IFX54441LDVXUMA1?

IFX54441LDVXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IFX54441LDVXUMA1 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 IFX54441LDVXUMA1?

For technical support, including IFX54441LDVXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IFX54441LDVXUMA1 requirements.

6.How does Aetrix verify that IFX54441LDVXUMA1 is sourced from the original manufacturer or authorized distributors?

All IFX54441LDVXUMA1 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 IFX54441LDVXUMA1 meets industry standards.

7.What is the process for return or replacement of IFX54441LDVXUMA1?

All IFX54441LDVXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with IFX54441LDVXUMA1, 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 IFX54441LDVXUMA1 part is unused and in its original packaging.

Return procedure for IFX54441LDVXUMA1:

1.Submit a request within 90 days.

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

Tech Hub

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…