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Infineon Technologies IFX25401TBVATMA1
- Part No.:
- IFX25401TBVATMA1
- Manufacturer:
- Infineon Technologies
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
IFX25401TBVATMA1.pdf
- Description:
- IC REG LIN POS ADJ 400MA TO263-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,665
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Product details
Overview
IFX25401TBVATMA1 from Infineon Technologies is a monolithic low-dropout linear voltage regulator supporting adjustable output (2.5–20 V) or fixed 5 V versions, delivering up to 400 mA with ±2% output accuracy, 250–500 mV dropout at 250 mA, and operation from −40 °C to +125 °C. It serves as primary power regulation in battery-backed industrial control modules requiring ultra-low quiescent current and enable-controlled shutdown.
For engineers reviewing the IFX25401TBVATMA1 datasheet, IFX25401TBVATMA1 pinout, IFX25401TBVATMA1 application, or IFX25401TBVATMA1 equivalent, key selection criteria include its adjustable/fixed output configuration, EN-controlled <10 µA standby current, reverse polarity protection, thermal shutdown, and PG-TO263-5 package suitability for high-power-density PCB layouts.
Technical Context
The IFX25401TBVATMA1 implements an internal bandgap reference, error amplifier, and saturation-controlled pass transistor with integrated overtemperature shutdown and output current limiting. Its VA pin enables external resistor-divider feedback for precise output voltage setting between 2.5 V and 20 V, while the EN pin provides logic-level on/off control with internal pull-down.
Designed for harsh environments, it features reverse polarity protection, operates across 4.5–40 V input range, and maintains stability with ≥22 µF/≤3 Ω ESR output capacitance. The heat slug is internally connected to GND and must be soldered to PCB ground and heatsink area for thermal performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Adjustable 2.5–20 V or fixed 5.0 V ±2% accuracy; supports precision biasing of analog sensors and microcontrollers. |
| Max Output Current | 400 mA continuous; sufficient for powering MCU cores, CAN transceivers, and small solenoids without external boost stages. |
| Dropout Voltage | 250–500 mV at 250 mA; enables stable 3.3 V or 5 V regulation from single-cell LiFePO₄ or 12 V automotive rails. |
| Quiescent Current | <10 µA in shutdown (EN = low); extends battery life in always-on security sensors and remote monitoring nodes. |
| Thermal Protection | Overtemperature shutdown at Tj ≥ 150 °C; prevents latch-up during sustained overload or poor heatsinking. |
| Input Voltage Range | 4.5–40 V (VI ≥ VQ + 0.5 V); compatible with wide-input industrial SMPS outputs and unregulated DC bus supplies. |
| ESD Robustness | ±2 kV HBM, ±500 V CDM; meets IEC 61000-4-2 Level 3 for front-panel interface circuits. |
Pinout & Package
IFX25401TBVATMA1 uses the PG-TO263-5 (D²PAK) thermally enhanced package with exposed heat slug electrically tied to GND. Pin 1: Input (I), Pin 2: Enable (EN), Pin 3: Ground (GND), Pin 4: Not Connected / Voltage Adjust (VA), Pin 5: Output (Q). Heat slug must be soldered to PCB GND plane and thermal pad area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - I | Input supply connection | Connects directly to input rail; requires local ceramic decoupling capacitor to minimize high-frequency impedance. |
| 2 - EN | Logic-enable control input | High-active signal; internal pull-down ensures safe default-off state during power-up or MCU reset. |
| 3 - GND | Power and signal reference | Internally bonded to heat slug; must be low-impedance connection to PCB ground plane for thermal and noise performance. |
| 4 - VA | Voltage adjust feedback node | For adjustable version: connects external R1/R2 divider to set VOUT; open or grounded for fixed 5 V variants. |
| 5 - Q | Regulated output terminal | Delivers filtered, stabilized output; requires ≥22 µF low-ESR capacitor placed adjacent to pins per stability requirements. |
Key Features
| Feature | Design Value |
|---|---|
| Enable-Controlled Shutdown | Reduces total system current to <10 µA, enabling multi-year battery operation in wireless sensor nodes. |
| Reverse Polarity Protection | Prevents damage from accidental battery reversal or miswired DC inputs without external diodes. |
| Integrated Overcurrent Limit | Clamps output current at 400–1100 mA depending on junction temperature, eliminating need for external current-sense resistors. |
| Wide Operating Temperature | Guaranteed functionality from −40 °C to +125 °C ambient, suitable for under-hood or factory-floor deployments. |
| Green Product Compliance | RoHS-compliant materials and lead-free finish meet EU Directive 2011/65/EU and IPC-J-STD-020 reflow profiles. |
Applications
| Industrial PLC I/O Modules | Medical Patient Monitoring Units |
|---|---|
Use Scenario: Powering isolated analog input channels and digital isolators in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Primary LDO supplying clean 5 V to ADC reference buffers and optocoupler drivers. Use Value: Low dropout and ±2% accuracy ensure stable reference voltage across varying 24 V DC bus loads and ambient temperatures. | Use Scenario: Providing regulated power to ECG front-end amplifiers and Bluetooth LE radio subsystems in portable diagnostic devices. IC Role / Device Role / Timing Role: Battery-supplied LDO delivering 3.3 V (via external divider) with ultra-low quiescent current during sleep mode. Use Value: <10 µA shutdown current extends lithium coin cell life beyond 3 years in intermittent-use clinical sensors. |
| Building Automation Controllers | Security System Perimeter Sensors |
Use Scenario: Regulating power for HVAC zone controllers operating from 24 V AC/DC building power with frequent brownouts. IC Role / Device Role / Timing Role: Main 5 V regulator for ARM Cortex-M microcontroller and RS-485 transceivers. Use Value: 40 V max input and robust line regulation (15–25 mV) maintain operation during transient surges and undervoltage events. | Use Scenario: Powering PIR motion detectors and tamper switches in outdoor security enclosures exposed to −40 °C winter conditions. IC Role / Device Role / Timing Role: Adjustable-output LDO configured for 3.3 V to drive low-power MCU and RF transceiver. Use Value: Guaranteed −40 °C to +125 °C operation and reverse polarity protection prevent field failures due to cold-start or wiring errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable/fixed LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLE42754G | Fixed 5 V output only; higher quiescent current (45 µA typ); no EN pin; lower max input (40 V). | Lacks adjustable output and enable control; suited for simpler non-battery systems without shutdown requirement. | Select when board space is constrained and only fixed 5 V is needed without enable or low-IQ demands. |
| TLV73350PDBVR | Fixed 5 V; 300 mA max; 50 µA IQ; SOT-23-5 package; no reverse polarity or overtemperature protection. | Not rated for industrial temperature range; lacks fault protections critical for harsh environments. | Choose for cost-sensitive consumer-grade designs where ambient temperature stays below 85 °C and protection is handled externally. |
Compared with TLE42754G and TLV73350PDBVR, IFX25401TBVATMA1 uniquely combines adjustable/fixed output, EN control, <10 µA shutdown, reverse polarity protection, and −40 °C to +125 °C operation-making it the only option qualified for long-life, safety-critical industrial battery systems.
Availability
IFX25401TBVATMA1 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, medical patient monitoring units, and building automation controllers requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for IFX25401TBVATMA1 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 9001.
The IFX25401 belongs to Infineon's industrial-grade linear regulator product line, engineered for reliability in battery-powered and harsh-environment applications where protection, precision, and thermal resilience are mandatory.
FAQ
What output voltage configurations does IFX25401TBVATMA1 support?
IFX25401TBVATMA1 supports both fixed 5 V output (IFX25401TBV50 variant) and adjustable output (IFX25401TBV variant) via external resistor divider on the VA pin. The adjustable range is 2.5 V to 20 V with ±2% accuracy across load and temperature. Pin 4 (VA) is not connected in fixed-voltage versions.
How is thermal performance affected by PCB layout for IFX25401TBVATMA1?
Thermal resistance depends critically on PCB copper area: RthJA is 22 K/W with 2-layer FR4 board and thermal vias, but rises to 74 K/W with footprint-only copper. The exposed heat slug must be soldered to ≥300 mm² GND copper area with ≥6 thermal vias (0.3 mm diameter) to achieve rated 400 mA output at 125 °C ambient.
Does IFX25401TBVATMA1 require an external output capacitor, and what are its specifications?
Yes - a minimum 22 µF ceramic or tantalum capacitor with ESR ≤3 Ω at 10 kHz is required between Q and GND for stability. This capacitor must be placed within 5 mm of the IC pins. Lower ESR improves PSRR; higher capacitance (>47 µF) enhances transient response but does not reduce minimum value requirement.
Can IFX25401TBVATMA1 be used in automotive applications?
No - IFX25401TBVATMA1 is explicitly not qualified for automotive or transportation use per its datasheet. Infineon states it is designed for industrial, medical, and building automation applications. For automotive-grade LDOs, refer to Infineon's TLx series (e.g., TLE4275, TLS850B) which meet AEC-Q100 Grade 1 requirements.
IFX25401TBVATMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- 20V
- Voltage Dropout (Max):
- 0.5V @ 250mA
- Current - Output:
- 400mA
- Current - Quiescent (Iq):
- 220 µA
- Current - Supply (Max):
- 25 mA
- PSRR:
- 54dB (100Hz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-TO263-5-1
IFX25401TBVATMA1 FAQ
1.How can I place an order for IFX25401TBVATMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for IFX25401TBVATMA1 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 IFX25401TBVATMA1 reliable?
The price and inventory of IFX25401TBVATMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IFX25401TBVATMA1 is usually 5 days.
3.What payment methods are accepted for IFX25401TBVATMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IFX25401TBVATMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IFX25401TBVATMA1?
IFX25401TBVATMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IFX25401TBVATMA1 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 IFX25401TBVATMA1?
For technical support, including IFX25401TBVATMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IFX25401TBVATMA1 requirements.
6.How does Aetrix verify that IFX25401TBVATMA1 is sourced from the original manufacturer or authorized distributors?
All IFX25401TBVATMA1 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 IFX25401TBVATMA1 meets industry standards.
7.What is the process for return or replacement of IFX25401TBVATMA1?
All IFX25401TBVATMA1 units undergo pre-shipment inspection (PSI). If there is an issue with IFX25401TBVATMA1, 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 IFX25401TBVATMA1 part is unused and in its original packaging.
Return procedure for IFX25401TBVATMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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