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

Infineon Technologies IFX25001TFV33ATMA2

Name: IFX25001TFV33ATMA2
Brand: Infineon Technologies
SKU: IFX25001TFV33ATMA2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IFX25001TFV33ATMA2

Manufacturer:: Infineon Technologies

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

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: IFX25001TFV33ATMA2.pdf

Description:: IC REG LINEAR 3.3V 400MA TO252-3

Quantity:: RFQ Add To RFQ list

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Inventory:2,447

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Product details

Overview

IFX25001TFV33ATMA2 from Infineon Technologies is a 3.3 V fixed-output, low-dropout linear voltage regulator in PG-TO252-3 (D-Pak) package, delivering up to 400 mA output current with dropout voltage as low as 0.7 V at 300 mA, functional input range of 4.7–40 V, and integrated reverse polarity protection, overtemperature shutdown, and current limiting-used in industrial power rails for network routers and HDTV mainboard supplies.

For engineers reviewing the IFX25001TFV33ATMA2 datasheet, IFX25001TFV33ATMA2 pinout, IFX25001TFV33ATMA2 application, or IFX25001TFV33ATMA2 equivalent, key selection criteria include dropout performance at full load, thermal resistance under natural convection, stability with 22 µF/≤3 Ω ESR output capacitor, and qualification per JEDEC industrial reliability standards.

Technical Context

The IFX25001TFV33ATMA2 implements a bandgap-referenced control amplifier with saturation control and integrated thermal shutdown circuitry. Its internal architecture includes a dedicated temperature sensor and current-limiting transistor stage that activates before junction temperature exceeds 151 °C.

It operates across -40 °C to +125 °C junction temperature, supports input voltages down to 4.7 V (minimum for regulation), and maintains output regulation with ≤70 mV load regulation over 5–300 mA and ≤25 mV line regulation from 12–32 V input.

Key Specifications

Parameter	Value and Actual Design Meaning
Output voltage	3.3 V ±3.4% (3.17–3.44 V), stable across 5–300 mA load and 4.7–28 V input
Max output current	400 mA continuous; current limit trips at 600 mA typical to protect against short-circuit faults
Dropout voltage	0.7 V typical at 300 mA - enables operation with only 4.0 V input when regulating 3.3 V
Input voltage range	Functional: 4.7–40 V; Absolute max: 45 V - supports 24 V industrial bus with margin
Thermal resistance	R_thJA = 27 K/W (natural convection, FR4 2s2p); R_thJC = 4 K/W - requires heatsink for >250 mA sustained loads
Output capacitor	22 µF minimum ceramic or tantalum with ESR ≤3 Ω at 10 kHz - ensures loop stability without external compensation
Protection features	Reverse polarity, overtemperature (151 °C trip), and output current limiting - no external components required

Pinout & Package

IFX25001TFV33ATMA2 uses the PG-TO252-3 (D-Pak) thermally enhanced surface-mount package with exposed heat slug tied internally to GND. Pin 1 = Input (VI), Pin 2 = GND (internally connected to heat slug), Pin 3 = Output (VQ).

Pin/Terminal	Circuit Role	Design Meaning
1 (I)	Input supply connection	Accepts 4.7–40 V DC; requires local 100 nF ceramic decoupling capacitor to GND
2 (GND)	Ground reference and thermal path	Internally bonded to heat slug; must be soldered to ≥300 mm² copper pour for thermal performance
3 (Q)	Regulated output	Delivers 3.3 V ±3.4%; requires 22 µF output capacitor with ≤3 Ω ESR for stability

Key Features

Feature	Design Value
Integrated reverse polarity protection	Blocks damage from accidental battery or supply reversal - no external diode needed
Thermal shutdown with hysteresis	Shuts down at 151 °C T_j; restarts after ~20 °C cooldown - prevents latch-up during overload
Low quiescent current	100 µA typical at 1 mA load - preserves standby power in always-on systems
JEDEC-industrial qualified	Validated per JEDEC stress tests for -40 °C to +125 °C operation - suitable for uncontrolled ambient environments
Stable with low-ESR capacitors	Compatible with 22 µF ceramic (X5R/X7R) or polymer tantalum - eliminates need for series resistor

Applications

Industrial Network Router Power

HDTV Mainboard LDO Rail

Use Scenario: Provides clean 3.3 V supply to Ethernet PHY, switch controller, and flash memory on 24 V-powered enterprise routers.

IC Role / Device Role / Timing Role: Primary post-regulator converting 5 V intermediate rail to noise-sensitive 3.3 V logic supply.

Use Value: 60 dB PSRR at 100 Hz suppresses switching noise from upstream DC/DC converters.

Use Scenario: Powers SoC I/O banks and HDMI interface circuitry in consumer HDTV mainboards operating from 12 V input.

IC Role / Device Role / Timing Role: Fixed-output LDO supplying stable core voltage to timing-critical display interfaces.

Use Value: 0.7 V dropout enables regulation even when 12 V rail sags to 4.0 V during surge events.

Smart Appliance MCU Supply

Manufacturing PLC I/O Module

Use Scenario: Supplies 3.3 V to ARM Cortex-M microcontroller and isolated CAN transceiver in washing machine control boards.

IC Role / Device Role / Timing Role: System-level voltage regulator for mixed-signal MCU subsystem with reverse-battery immunity.

Use Value: Reverse polarity protection eliminates need for external series diode, reducing BOM cost and forward drop loss.

Use Scenario: Powers analog front-end and digital isolator in DIN-rail mounted PLC I/O modules exposed to 24 V field wiring.

IC Role / Device Role / Timing Role: Robust industrial-grade LDO handling wide input transients and ambient temperature swings.

Use Value: Qualified to JEDEC industrial standards ensures 10+ year field reliability in factory automation environments.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLE4275G	5 V fixed output; 400 mA rating; R_thJA = 30 K/W (PG-TO252); no reverse polarity protection	Requires external reverse-protection diode; suited for 5 V-only systems where 3.3 V is not needed	Select if system already uses 5 V logic and thermal budget allows slightly higher R_thJA
LDL113PU33R	3.3 V output; 300 mA max; R_thJA = 50 K/W (SOT-23-5); no thermal shutdown or current limit	Limited to low-power microcontrollers; lacks fault protections required for industrial field wiring	Only for space-constrained, non-fault-tolerant applications with <200 mA load and stable 5–6 V input

Compared with TLE4275G and LDL113PU33R, IFX25001TFV33ATMA2 uniquely combines 3.3 V output, reverse polarity protection, thermal shutdown, and 27 K/W R_thJA in TO252 - making it the only option qualified for harsh industrial inputs with minimal external components.

Availability

IFX25001TFV33ATMA2 is available at Aetrix Electronics and suitable for industrial network routers, HDTV mainboard power, and smart appliance MCU supply requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for IFX25001TFV33ATMA2 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 IECQ QC 080000.

The IFX25001 belongs to Infineon's high-reliability linear regulator product line designed specifically for industrial and automotive power-supply applications demanding extended temperature operation, fault resilience, and JEDEC-qualified reliability.

FAQ

What is the minimum input voltage required for regulation at 3.3 V output?

The IFX25001TFV33ATMA2 requires a minimum input voltage of 4.7 V to maintain regulation at 3.3 V output across its full load range (5–300 mA). Below this, output voltage drops linearly with input; the 0.7 V typical dropout at 300 mA means 4.0 V input sustains regulation only near light loads.

Can this regulator operate without an output capacitor?

No. The IFX25001TFV33ATMA2 requires a minimum 22 µF output capacitor with ESR ≤3 Ω at 10 kHz for closed-loop stability. Omitting it causes oscillation and potential device failure. Ceramic (X5R/X7R) or polymer tantalum types are recommended; aluminum electrolytic is not suitable due to ESR drift.

How does the reverse polarity protection function without external components?

The IFX25001TFV33ATMA2 integrates a back-to-back MOSFET structure between input and ground. When VI is reversed, the internal FETs block current flow, limiting reverse current to <1 µA. This eliminates the need for an external series diode while preserving efficiency and board space.

Is the heat slug electrically isolated in the PG-TO252-3 package?

No. The heat slug in the PG-TO252-3 package is internally connected to Pin 2 (GND). It must be soldered to a GND copper pour or heatsink tied to system ground. Using an insulating pad or thermal tape between slug and heatsink will degrade thermal performance and may cause thermal shutdown under load.

IFX25001TFV33ATMA2 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 40V

Voltage - Output (Min/Fixed):: 3.3V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 1.2V @ 300mA

Current - Output:: 400mA

Current - Quiescent (Iq):: 220 µA

Current - Supply (Max):: 30 mA

PSRR:: 60dB (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-TO252-3

IFX25001TFV33ATMA2 FAQ

1.How can I place an order for IFX25001TFV33ATMA2 through Aetrix?

Please submit a Request for Quotation (RFQ) for IFX25001TFV33ATMA2 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 IFX25001TFV33ATMA2 reliable?

The price and inventory of IFX25001TFV33ATMA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IFX25001TFV33ATMA2 is usually 5 days.

3.What payment methods are accepted for IFX25001TFV33ATMA2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IFX25001TFV33ATMA2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IFX25001TFV33ATMA2?

IFX25001TFV33ATMA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IFX25001TFV33ATMA2 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 IFX25001TFV33ATMA2?

For technical support, including IFX25001TFV33ATMA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IFX25001TFV33ATMA2 requirements.

6.How does Aetrix verify that IFX25001TFV33ATMA2 is sourced from the original manufacturer or authorized distributors?

All IFX25001TFV33ATMA2 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 IFX25001TFV33ATMA2 meets industry standards.

7.What is the process for return or replacement of IFX25001TFV33ATMA2?

All IFX25001TFV33ATMA2 units undergo pre-shipment inspection (PSI). If there is an issue with IFX25001TFV33ATMA2, 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 IFX25001TFV33ATMA2 part is unused and in its original packaging.

Return procedure for IFX25001TFV33ATMA2:

1.Submit a request within 90 days.

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

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