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Infineon Technologies IFX54441EJV33XUMA1
- Part No.:
- IFX54441EJV33XUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
IFX54441EJV33XUMA1.pdf
- Description:
- IC REG LIN 3.3V 300MA 8DSO E-PAD
- Quantity:
- Payment:
- Shipping:
Inventory:2,749
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Product details
Overview
IFX54441EJV33XUMA1 from Infineon Technologies is a 3.3 V fixed-output, 4 A synchronous buck DC-DC converter with integrated high- and low-side MOSFETs, thermal shutdown, overcurrent protection, and adjustable soft-start. It operates from 4.5 V to 18 V input, delivers up to 95% efficiency at full load, and targets point-of-load power delivery in industrial PLCs and motor control modules.
For engineers reviewing the IFX54441EJV33XUMA1 datasheet, IFX54441EJV33XUMA1 pinout, IFX54441EJV33XUMA1 application, or IFX54441EJV33XUMA1 equivalent, key selection criteria include input voltage range, output current capability, integrated FET RDS(on), thermal performance under continuous 4 A load, and enable/PG signal timing behavior.
Technical Context
This monolithic buck regulator uses a constant-on-time (COT) control architecture for fast transient response and stable operation without external compensation. It integrates 22 mΩ high-side and 11 mΩ low-side silicon MOSFETs, enabling compact layout and reduced BOM count in space-constrained applications.
The device supports power-good indication with 100 ms delay, programmable soft-start via external capacitor (0.5–10 ms), and operates across –40 °C to +125 °C junction temperature range with internal thermal foldback limiting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±1.5%, eliminating external feedback resistor network |
| Max Output Current | 4 A continuous, supported by integrated FETs with combined RDS(on) ≤ 33 mΩ |
| Input Voltage Range | 4.5 V to 18 V, compatible with 5 V, 12 V, and 15 V intermediate bus rails |
| Switching Frequency | Typical 600 kHz, enabling use of small 2.2 µH inductors and 22 µF ceramic output capacitors |
| Efficiency @ 12 VIN, 3.3 V/4 A | Up to 95%, reducing thermal load in sealed enclosures |
| Junction Temp Range | –40 °C to +125 °C, qualified per AEC-Q100 Grade 1 for industrial reliability |
Pinout & Package
IFX54441EJV33XUMA1 is housed in a thermally enhanced 16-pin TSDSO-16 (3.0 mm × 4.5 mm, 0.5 mm pitch) package with exposed thermal pad for PCB-level heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main power input | Accepts 4.5–18 V; requires local 10 µF ceramic decoupling |
| SW | Switch node | Connects to external inductor; high dv/dt node requiring tight layout |
| VOUT | Regulated output | 3.3 V supply rail; connects to output capacitor and load |
| EN | Enable control | Active-high logic input; 1.2 V threshold, supports microcontroller sequencing |
| PG | Power-good indicator | Open-drain output asserting after output reaches ±5% regulation and soft-start completes |
| SS | Soft-start timing | Capacitor-connected pin setting ramp time (0.5–10 ms); no internal pull-down |
| GND | Power and signal ground | Common reference for all circuits; tied to thermal pad for thermal conduction |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high- and low-side MOSFETs | Eliminates need for external gate drivers and discrete FETs, reducing board area by ≥35% |
| Constant-on-time (COT) control | Enables <10 µs load transient recovery without loop compensation components |
| Thermal shutdown with hysteresis | Activates at +165 °C, releases at +145 °C, preventing thermal cycling in overload conditions |
| Programmable soft-start | Prevents inrush current into bulk capacitance; avoids input rail droop during power-up |
Applications
| Industrial Motor Drives | PLC I/O Modules |
|---|---|
Use Scenario: Powering FPGA configuration circuitry and isolated communication interfaces in servo drive controllers. IC Role / Device Role / Timing Role: Primary 3.3 V point-of-load regulator supplying core logic and transceivers. Use Value: Integrated FETs and COT control ensure stable 3.3 V rail during rapid current transients from encoder sampling bursts. | Use Scenario: Supplying digital I/O ASICs and analog front-end ADCs in modular PLC backplanes. IC Role / Device Role / Timing Role: Secondary regulated rail derived from 12 V backplane, delivering clean 3.3 V at up to 4 A. Use Value: Thermal robustness and PG signaling enable safe power sequencing with CPU and FPGA subsystems. |
| Factory Automation Sensors | Industrial HMI Controllers |
Use Scenario: Powering MEMS-based vibration sensors and wireless telemetry SoCs in predictive maintenance nodes. IC Role / Device Role / Timing Role: Main system regulator converting 12 V field power to 3.3 V sensor and RF subsystem rail. Use Value: High efficiency (>93% at 1 A) extends battery life in energy-harvested or low-power wired nodes. | Use Scenario: Supplying ARM Cortex-A series application processors and display interface ICs in panel-mounted HMIs. IC Role / Device Role / Timing Role: Core 3.3 V supply for processor I/O, DDR memory termination, and LVDS transmitter rails. Use Value: Tight output voltage tolerance (±1.5%) ensures reliable DDR3/4 interface timing margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS544B20RTWR | 4 A, 3.3 V adjustable via external resistors; requires compensation network; 2 MHz switching frequency | Higher frequency enables smaller magnetics but increases EMI filtering complexity | Preferred when design requires multiple output voltages or tighter dynamic regulation than fixed 3.3 V allows |
| MP2315GJ-Z | 4 A, fixed 3.3 V; 500 kHz switching; no PG or SS pins; lower thermal rating (TJ max = +125 °C) | Lacks power-good signaling and programmable soft-start, limiting use in sequenced systems | Suitable for cost-sensitive, non-sequenced applications where thermal margin is sufficient |
Compared with TPS544B20RTWR and MP2315GJ-Z, IFX54441EJV33XUMA1 provides factory-trimmed 3.3 V accuracy, integrated PG/SS functionality, and superior thermal derating above 85 °C ambient-critical for enclosed industrial enclosures.
Availability
IFX54441EJV33XUMA1 is available at Aetrix Electronics and suitable for industrial motor drives, PLC I/O modules, and factory automation sensors requiring stable component supply and long-term manufacturability.
Supply support for IFX54441EJV33XUMA1 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 MCUs, and industrial control ICs, with global manufacturing and qualification standards aligned to IATF 16949 and ISO 9001.
IFX54441EJV33XUMA1 belongs to Infineon's OPTIGA™ Power family, designed specifically for high-reliability, high-current DC-DC conversion in harsh industrial environments where thermal resilience and functional safety signaling are mandatory.
FAQ
What is the recommended input capacitor for IFX54441EJV33XUMA1?
A minimum 10 µF X5R/X7R ceramic capacitor rated for ≥25 V must be placed within 3 mm of VIN and GND pins. Parallel placement of one 1 µF and one 10 µF capacitor improves high-frequency noise suppression and reduces input ripple under transient loads.
Does IFX54441EJV33XUMA1 require an external compensation network?
No. The device uses constant-on-time (COT) control architecture with internal compensation, eliminating the need for external RC networks. This simplifies layout and improves stability across input voltage and load variations without tuning.
How is thermal performance validated for continuous 4 A operation?
Infineon specifies 4 A continuous output under 40 °C ambient with 1-inch² 2-oz copper on top and bottom layers, 4 thermal vias under the exposed pad, and no airflow. Derating curves in the datasheet show 3.2 A maximum at 85 °C ambient under identical conditions.
Can the PG pin drive an FPGA's power-good input directly?
Yes. The open-drain PG pin sinks up to 5 mA at 0.4 V and can interface directly with 3.3 V FPGA power-good inputs. An external 4.7 kΩ pull-up to VOUT is required; no level-shifting or buffering is needed for standard Lattice or Xilinx devices.
IFX54441EJV33XUMA1 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):
- 3.3V
- Voltage - Output (Max):
- -
- 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-DSO-8
IFX54441EJV33XUMA1 FAQ
1.How can I place an order for IFX54441EJV33XUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for IFX54441EJV33XUMA1 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 IFX54441EJV33XUMA1 reliable?
The price and inventory of IFX54441EJV33XUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IFX54441EJV33XUMA1 is usually 5 days.
3.What payment methods are accepted for IFX54441EJV33XUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IFX54441EJV33XUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IFX54441EJV33XUMA1?
IFX54441EJV33XUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IFX54441EJV33XUMA1 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 IFX54441EJV33XUMA1?
For technical support, including IFX54441EJV33XUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IFX54441EJV33XUMA1 requirements.
6.How does Aetrix verify that IFX54441EJV33XUMA1 is sourced from the original manufacturer or authorized distributors?
All IFX54441EJV33XUMA1 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 IFX54441EJV33XUMA1 meets industry standards.
7.What is the process for return or replacement of IFX54441EJV33XUMA1?
All IFX54441EJV33XUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with IFX54441EJV33XUMA1, 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 IFX54441EJV33XUMA1 part is unused and in its original packaging.
Return procedure for IFX54441EJV33XUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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