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

Infineon Technologies IFX54441EJV50XUMA1

Name: IFX54441EJV50XUMA1
Brand: Infineon Technologies
SKU: IFX54441EJV50XUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IFX54441EJV50XUMA1

Manufacturer:: Infineon Technologies

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

Package:: 8-SOIC (0.154", 3.90mm Width) Exposed Pad

Datasheet:: IFX54441EJV50XUMA1.pdf

Description:: IC REG LIN 5V 300MA 8DSO E-PAD

Quantity:: RFQ Add To RFQ list

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Inventory:3,328

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Product details

Overview

IFX54441EJV50 from Infineon Technologies is a micropower, low-noise, wide-input-range LDO voltage regulator delivering 300mA at fixed 5.0V output with 290mV dropout, 42µVRMS noise (10Hz–100kHz), and 30µA quiescent current. It features reverse battery protection, Kelvin sense capability, and stable operation with ≥3.3µF ceramic/aluminum/tantalum output capacitors - deployed in radar front-ends and image sensor power rails.

For engineers reviewing the IFX54441EJV50 datasheet, IFX54441EJV50 pinout, IFX54441EJV50 application, or IFX54441EJV50 equivalent, key selection criteria include input voltage range (5.5–20V), thermal resistance (R_thJA = 39 K/W on 2s2p FR4), shutdown current (<1µA), SENSE pin functionality for remote sensing, and PG-DSO-8 Exposed Pad package compatibility with PCB thermal vias.

Technical Context

The IFX54441EJV50 implements a precision bandgap reference and error amplifier with saturation control to maintain regulation down to 1.8V internal supply, enabling operation across its full 5.5–20V input range. Its architecture integrates overtemperature and overcurrent protection with reverse-battery blocking - eliminating external diodes.

Kelvin sensing via the SENSE pin allows compensation for trace resistance between regulator and load, while the BYP pin accepts a 10nF capacitor to shunt the internal reference and reduce output noise to 42µVRMS. EN pin logic enables <1µA shutdown mode with internal pull-up requirement when unused.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 5.0 V ±2.5% over full temperature and load range - ensures stable MCU core/sensor bias without external feedback.
Max Output Current	300 mA continuous - supports mid-power imaging sensors and radar signal chain ICs without thermal derating on 2s2p board.
Dropout Voltage	290 mV at 300 mA - enables regulation from 5.8V input, critical for single-cell LiFePO₄ or dual-cell alkaline systems.
Output Noise	42 µV_RMS (10 Hz–100 kHz) with 0.01 µF BYP cap - meets low-noise requirements of analog front-ends and high-resolution ADCs.
Quiescent Current	30 µA typical - extends battery life in always-on sensor nodes and wake-on-event systems.
Input Voltage Range	5.5 V to 20 V - accommodates automotive transients, industrial 12V rails, and wide-vin battery stacks.
Shutdown Current	<1 µA - enables ultra-low-power deep-sleep modes in portable instrumentation.

Pinout & Package

IFX54441EJV50 is housed in a PG-DSO-8 Exposed Pad package (RoHS-compliant, green product), where Pin 9 (exposed thermal pad) must be soldered to PCB ground and electrically tied to Pin 6 (GND) for optimal thermal performance (R_thJA = 39 K/W).

Pin/Terminal	Circuit Role	Design Meaning
1 (OUT)	Regulated output	Supplies 5V to load; requires ≥3.3 µF output capacitor to prevent oscillation; connects directly to load or SENSE for Kelvin sensing.
2 (SENSE)	Output voltage sense input	Feeds error amplifier; eliminates IR drop in PCB traces when wired directly to load - improves regulation accuracy under dynamic load.
3,7 (NC)	No connect	Internally unconnected; may be left floating or tied to GND per layout convenience - no electrical impact.
4 (BYP)	Bypass reference node	Accepts 0.01 µF capacitor to ground/output to reduce reference noise; clamped to ±0.6 V internally - unused pin must remain open.
5 (EN)	Enable control	Active-high logic input; pulls output off when low; requires pull-up to VIN if driven by open-collector source - prevents floating state.
6 (GND)	Power ground	Primary return path; must be connected to exposed pad (Pin 9) and system ground plane for thermal and EMI integrity.
8 (IN)	Input supply	Accepts 5.5–20V input; reverse-battery protected - blocks reverse current during polarity reversal, protecting downstream circuitry.
9 (Tab)	Thermal pad	Exposed copper pad; mandatory connection to PCB GND plane with thermal vias - accounts for >70% of heat dissipation in DSO-8 EP package.

Key Features

Feature	Design Value
Low-noise regulation	42 µV_RMS output noise with 0.01 µF BYP cap - enables clean power for RF receivers and precision analog circuits.
Kelvin sense capability	SENSE pin referenced to OUT allows remote feedback - maintains ±2.5% accuracy despite up to 100 mΩ PCB trace resistance.
Reverse battery protection	Integrated blocking function prevents reverse current flow from load to input during polarity reversal - eliminates need for external series diode.
Ultra-low IQ shutdown	<1 µA shutdown current with EN = low - preserves battery charge in long-idle portable instruments and IoT edge nodes.
Capacitor flexibility	Stable with 3.3 µF ceramic, tantalum, or aluminum output caps - removes ESR constraints and simplifies BOM across suppliers.

Applications

Radar Front-End Power

Image Sensor Bias Supply

Use Scenario: Powers RF transceiver ICs and low-noise amplifiers in 24 GHz automotive radar modules.

IC Role / Device Role / Timing Role: Primary 5V LDO supplying analog signal chain with sub-50 µV noise floor and transient response sufficient for pulsed TX/RX cycles.

Use Value: Eliminates need for additional LC filtering; 290 mV dropout allows direct use of 6.5V intermediate rail, reducing system component count.

Use Scenario: Provides regulated 5V to CMOS image sensors in industrial machine vision cameras.

IC Role / Device Role / Timing Role: Low-noise bias source for pixel array and ADC reference, synchronized to frame capture timing.

Use Value: 42 µV_RMS noise prevents fixed-pattern noise in raw image data; Kelvin sensing compensates for flex-cable voltage drop.

Microcontroller Core Supply

Battery-Powered Instrumentation

Use Scenario: Supplies 5V to ARM Cortex-M microcontrollers in portable test equipment with mixed-signal peripherals.

IC Role / Device Role / Timing Role: Main system regulator enabling low-power sleep modes and fast wake-up from EN-controlled shutdown.

Use Value: 30 µA quiescent current extends runtime in battery-only operation; 20V max input supports USB PD + buck-derived rails.

Use Scenario: Powers handheld gas analyzers and environmental monitors operating from two AA/AAA cells or Li-ion packs.

IC Role / Device Role / Timing Role: Single-point voltage regulation with reverse-polarity protection during field battery swaps.

Use Value: Integrated reverse-battery blocking replaces discrete diode, saving board space and forward-drop loss - critical for 1.8–2.4V cutoff thresholds.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLE42744G	Higher IQ (70 µA), lower noise (25 µV_RMS), automotive-qualified AEC-Q100 Grade 1, 400 mA output	Qualified for automotive ECUs; includes watchdog and reset functions not present in IFX54441EJV50	Select for automotive environments requiring qualification; avoid if non-automotive cost sensitivity or minimal feature set is prioritized.
MCP1703T-5002E/MB	Lower IQ (2 µA), higher dropout (600 mV), no SENSE or BYP pins, SOT-23-5 package	Suitable for space-constrained, ultra-low-power applications where noise & remote sensing are not required	Select for footprint-limited designs with static loads and no Kelvin sensing need; avoid when 290 mV dropout or 42 µV noise are mandatory.

Compared with TLE42744G and MCP1703T-5002E/MB, IFX54441EJV50 uniquely balances low noise, low dropout, Kelvin sensing, and reverse-battery protection in an industrial-grade DSO-8 EP package - making it optimal for radar, imaging, and portable instrumentation where all four attributes are concurrently required.

Availability

IFX54441EJV50 is available at Aetrix Electronics and suitable for radar front-end power, image sensor biasing, microcontroller core supply, and battery-powered instrumentation requiring stable component supply and long-term industrial lifecycle support.

Supply support for IFX54441EJV50 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 IATF 16949 standards.

The IFX54441 belongs to Infineon's industrial-grade linear regulator product line, designed specifically for noise-sensitive analog systems and battery-powered equipment requiring robust protection and thermal efficiency without automotive qualification overhead.

FAQ

What is the minimum output capacitance required for stability?

The IFX54441EJV50 requires a minimum 3.3 µF output capacitor for guaranteed stability across all operating conditions. Ceramic, aluminum, or tantalum types are acceptable - no ESR specification is needed. Larger values improve transient response for pulsed loads but do not affect basic loop stability.

Can the SENSE pin be left unconnected?

Yes - the SENSE pin may be directly connected to the OUT pin for standard local-regulation configurations. Leaving it unconnected is not recommended; it must either tie to OUT or route to the load's power input for Kelvin sensing. Floating the SENSE pin risks regulation inaccuracy and potential instability.

Is external reverse-polarity protection necessary?

No - the IFX54441EJV50 integrates reverse-battery protection. When input polarity is reversed, the device blocks reverse current flow and prevents voltage from appearing at the output, eliminating the need for an external series diode or MOSFET solution.

How does the BYP pin reduce output noise?

The BYP pin connects to the internal voltage reference node. Adding a 0.01 µF capacitor between BYP and OUT shunts high-frequency noise on the reference, lowering integrated output noise from ~100 µV_RMS to 42 µV_RMS (10 Hz–100 kHz). The pin is internally clamped to ±0.6 V and must not be DC-biased.

IFX54441EJV50XUMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width) Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 20V

Voltage - Output (Min/Fixed):: 5V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.41V @ 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-DSO-8

IFX54441EJV50XUMA1 FAQ

1.How can I place an order for IFX54441EJV50XUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for IFX54441EJV50XUMA1 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 IFX54441EJV50XUMA1 reliable?

The price and inventory of IFX54441EJV50XUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IFX54441EJV50XUMA1 is usually 5 days.

3.What payment methods are accepted for IFX54441EJV50XUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IFX54441EJV50XUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IFX54441EJV50XUMA1?

IFX54441EJV50XUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IFX54441EJV50XUMA1 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 IFX54441EJV50XUMA1?

For technical support, including IFX54441EJV50XUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IFX54441EJV50XUMA1 requirements.

6.How does Aetrix verify that IFX54441EJV50XUMA1 is sourced from the original manufacturer or authorized distributors?

All IFX54441EJV50XUMA1 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 IFX54441EJV50XUMA1 meets industry standards.

7.What is the process for return or replacement of IFX54441EJV50XUMA1?

All IFX54441EJV50XUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with IFX54441EJV50XUMA1, 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 IFX54441EJV50XUMA1 part is unused and in its original packaging.

Return procedure for IFX54441EJV50XUMA1:

1.Submit a request within 90 days.

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

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