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Infineon Technologies IFX54441EJVXUMA1
- Part No.:
- IFX54441EJVXUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
IFX54441EJVXUMA1.pdf
- Description:
- IC REG LINEAR POS ADJ 300MA DSO8
- Quantity:
- Payment:
- Shipping:
Inventory:2,887
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Product details
Overview
IFX54441EJVXUMA1 from Infineon Technologies is a micropower, low-noise, wide-input LDO voltage regulator in PG-DSO8 exposed pad package, delivering 300mA output at fixed 3.3V with 270mV dropout, 24µVRMS noise (10Hz–100kHz), and 30µA quiescent current. It supports battery-powered systems, radar front-ends, and image sensor power rails where low noise and reverse-battery protection are critical.
For engineers reviewing the IFX54441EJVXUMA1 datasheet, IFX54441EJVXUMA1 pinout, IFX54441EJVXUMA1 application, or IFX54441EJVXUMA1 equivalent, key selection criteria include its 1.8V–20V input range, Kelvin-sense capability for load regulation, EN-controlled shutdown (<1µA), stability with ≥3.3µF ceramic output capacitors, and integrated overtemperature/overcurrent protection without external diodes.
Technical Context
The IFX54441EJVXUMA1 implements a precision bandgap reference with error amplifier feedback and saturation control to maintain regulation across 1.8V–20V input while minimizing dropout. Its internal bias circuitry enables stable operation with ultra-low quiescent current (30µA) and supports bypass capacitor coupling (0.01µF on BYP) to reduce output noise to 24µVRMS.
It integrates reverse-battery protection, eliminating external blocking diodes, and features bidirectional current limiting with thermal foldback. The SENSE pin (pin 2 in fixed version) provides Kelvin sensing for improved load regulation under PCB trace resistance, while EN (pin 5) accepts logic-level or open-collector drive with internal 1µA pull-up current requirement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±2% - ensures stable MCU core or image sensor analog supply without external resistors. |
| Max Output Current | 300mA - sufficient for mid-power microcontrollers or dual-channel image sensors. |
| Dropout Voltage | 270mV @ 300mA - enables operation down to 3.57V input when regulating 3.3V, critical for single-cell Li-ion or 4xAA systems. |
| Output Noise | 24µVRMS (10Hz–100kHz) with 0.01µF BYP cap - meets low-noise requirements for ADC references or RF receiver bias rails. |
| Quiescent Current | 30µA - extends battery life in always-on sensor nodes or wake-on-event systems. |
| Input Voltage Range | 1.8V to 20V - accommodates wide-source applications including automotive off-battery (12V nominal), industrial 24V, and multi-cell batteries. |
| Shutdown Current | <1µA - enables deep-sleep modes in portable instrumentation without leakage-induced drain. |
Pinout & Package
IFX54441EJVXUMA1 is housed in PG-DSO8 exposed pad (RoHS-compliant) with thermal pad (Pin 9) requiring solder connection to PCB ground for junction-to-board thermal resistance of 40°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Regulated output | Supplies load; requires ≥3.3µF ceramic capacitor to prevent oscillation; connects directly to SENSE in standard configuration. |
| SENSE (Pin 2) | Kelvin sense input | Enables remote sensing at load to compensate for PCB trace IR drop; improves load regulation accuracy by >50% in high-current layouts. |
| NC (Pins 3, 7) | No internal connection | May be left floating or tied to GND; no electrical function or thermal impact. |
| BYP (Pin 4) | Reference bypass node | Accepts 0.01µF capacitor to ground or OUT to reduce output noise; clamped to ±0.6V internally. |
| EN (Pin 5) | Enable control | Active-high logic input; pulls output to OFF state when low; requires pull-up if driven by open-collector gate. |
| GND (Pin 6) | Power ground | Reference for ADJ/SENSE and return path; must be tied to exposed pad (Pin 9) for thermal and EMI performance. |
| IN (Pin 8) | Input supply | Accepts 1.8V–20V; reverse-battery protected - blocks current flow if VIN < 0V relative to GND or VOUT. |
Key Features
| Feature | Design Value |
|---|---|
| Reverse battery protection | Eliminates need for external series diode, reducing BOM count and forward-drop losses in portable equipment. |
| No reverse current flow | Prevents backfeed from output to input during shutdown or fault, protecting upstream power sources and enabling safe hot-swap operation. |
| Stable with 3.3µF ceramic output cap | Reduces required board area and cost vs. regulators needing ≥10µF tantalum or ESR-tuned capacitors. |
| Integrated overtemperature & overcurrent protection | Shuts down safely under sustained overload or ambient >125°C without external circuitry - avoids latch-up or thermal runaway. |
| Exposed thermal pad (Pin 9) | Enables 40°C/W junction-to-board thermal resistance when soldered to ≥1cm² copper pour, supporting 300mA continuous operation at +85°C ambient. |
Applications
| Microcontroller Power Supply | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Powering ARM Cortex-M4 MCU with integrated ADC and RF transceiver in handheld test equipment. IC Role / Device Role / Timing Role: Primary 3.3V rail regulator providing clean, low-noise supply for digital core and analog peripherals. Use Value: 24µVRMS noise prevents ADC quantization errors; 30µA IQ extends 2xAA alkaline battery life to >12 months in sleep mode. | Use Scenario: Portable gas analyzer using electrochemical sensors and low-power signal chain. IC Role / Device Role / Timing Role: Main system regulator supplying sensor bias, op-amp rails, and microcontroller I/O. Use Value: Reverse-battery protection prevents damage from accidental polarity reversal; 1.8V min input supports operation down to depleted battery voltage. |
| Radar Front-End Bias | Image Sensor Analog Rail |
Use Scenario: Low-power 24GHz Doppler radar module in smart occupancy sensor. IC Role / Device Role / Timing Role: Clean 3.3V supply for RF mixer and baseband amplifier stages. Use Value: Ultra-low noise prevents phase noise degradation in local oscillator paths; EN pin enables synchronized radar burst operation. | Use Scenario: CMOS image sensor in industrial machine vision camera with rolling shutter timing. IC Role / Device Role / Timing Role: Dedicated analog supply for pixel array and column ADC reference. Use Value: Kelvin SENSE connection compensates for PCB trace resistance, maintaining <±0.5% output regulation across full temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6210B332MR-G | 300mA, 3.3V fixed, 250mV dropout, 40µA IQ, no SENSE or BYP pins | Lacks Kelvin sensing and noise-reduction bypass capability; limited to non-critical noise environments | Select when board space is constrained and noise <50µVRMS is acceptable; not suitable for radar or high-precision imaging. |
| Analog Devices ADM7172ACPZ-3.3-R7 | 3.3V fixed, 500mA, 120mV dropout, 200µA IQ, PSRR >70dB @ 1kHz, no reverse-battery protection | Higher current and lower dropout but lacks reverse-polarity hardening and consumes 6.7× more quiescent current | Choose for high-PSRR applications with stable input; avoid in battery-reversal-prone or ultra-low-IQ designs. |
Compared with XC6210B332MR-G and ADM7172ACPZ-3.3-R7, IFX54441EJVXUMA1 uniquely combines reverse-battery protection, Kelvin sensing, and sub-30µA IQ with 24µVRMS noise - making it the only option qualified for ruggedized, low-noise, battery-reversal-exposed applications like portable radar and field-deployed instrumentation.
Availability
IFX54441EJVXUMA1 is available at Aetrix Electronics and suitable for microcontroller power supply, battery-powered instrumentation, and radar front-end biasing requiring stable component supply, long-lifecycle availability, and RoHS-compliant packaging.
Supply support for IFX54441EJVXUMA1 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.
The IFX54441 belongs to Infineon's wide-input, low-noise LDO family designed specifically for battery-powered, noise-sensitive, and reverse-polarity-exposed applications - emphasizing reliability in portable medical, industrial sensing, and automotive-adjacent systems.
FAQ
What is the minimum output capacitor required for stable operation?
The IFX54441EJVXUMA1 requires a minimum 3.3µF ceramic output capacitor for stability across all operating conditions. This value is verified per the datasheet's AC stability analysis and applies regardless of load current or input voltage. Larger values may be used to improve transient response, but ESR is not a design constraint - unlike many legacy LDOs, it does not require a specific ESR range.
Can the SENSE pin be left unconnected in the fixed-voltage version?
No - the SENSE pin (Pin 2) must be connected either directly to the OUT pin for standard regulation or to the load point for Kelvin sensing. Leaving it floating violates the error amplifier input bias condition and risks instability or regulation failure. The datasheet explicitly states that in standard configuration, SENSE is tied to OUT; no internal pull-up or pull-down is provided.
Does IFX54441EJVXUMA1 support adjustable output voltage?
No - IFX54441EJVXUMA1 is the fixed 3.3V output variant (marked "54441E33"). The adjustable version is IFX54441EJV, which uses the ADJ pin instead of SENSE and has different pin mapping. Pin compatibility is not maintained between fixed and adjustable variants; layout reuse requires verification against respective pinouts in Figures 3a and 3b of the datasheet.
Is the exposed thermal pad electrically isolated?
No - the exposed pad (Pin 9) is internally connected to GND (Pin 6) and must be soldered to the PCB ground plane. Electrical isolation would compromise thermal performance and violate the device's safety design, as the pad serves both thermal conduction and grounding functions. Datasheet Section 3.2 confirms: "tie directly to Pin 6" and "solder Pin 9 to PCB ground".
IFX54441EJVXUMA1 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:
- 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-DSO-8
IFX54441EJVXUMA1 FAQ
1.How can I place an order for IFX54441EJVXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for IFX54441EJVXUMA1 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 IFX54441EJVXUMA1 reliable?
The price and inventory of IFX54441EJVXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IFX54441EJVXUMA1 is usually 5 days.
3.What payment methods are accepted for IFX54441EJVXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IFX54441EJVXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IFX54441EJVXUMA1?
IFX54441EJVXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IFX54441EJVXUMA1 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 IFX54441EJVXUMA1?
For technical support, including IFX54441EJVXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IFX54441EJVXUMA1 requirements.
6.How does Aetrix verify that IFX54441EJVXUMA1 is sourced from the original manufacturer or authorized distributors?
All IFX54441EJVXUMA1 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 IFX54441EJVXUMA1 meets industry standards.
7.What is the process for return or replacement of IFX54441EJVXUMA1?
All IFX54441EJVXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with IFX54441EJVXUMA1, 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 IFX54441EJVXUMA1 part is unused and in its original packaging.
Return procedure for IFX54441EJVXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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