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

Infineon Technologies IFX8117MEV33HTMA1

Name: IFX8117MEV33HTMA1
Brand: Infineon Technologies
SKU: IFX8117MEV33HTMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IFX8117MEV33HTMA1

Manufacturer:: Infineon Technologies

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

Package:: TO-261-4, TO-261AA

Datasheet:: IFX8117MEV33HTMA1.pdf

Description:: IC REG LINEAR 3.3V 1A SOT223-4

Quantity:: RFQ Add To RFQ list

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Inventory:1,106

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Product details

Overview

IFX8117MEV33HTMA1 from Infineon Technologies is a fixed-output linear voltage regulator delivering 3.3 V at up to 1 A, housed in a thermally enhanced SOT-223-4 package with integrated thermal shutdown and current limiting. It targets low-noise power rails for microcontroller cores, FPGA I/O banks, and industrial sensor signal chains requiring stable, ripple-free supply.

For engineers reviewing the IFX8117MEV33HTMA1 datasheet, IFX8117MEV33HTMA1 pinout, IFX8117MEV33HTMA1 application, or IFX8117MEV33HTMA1 equivalent, key selection criteria include dropout voltage (max 450 mV @ 1 A), load regulation (±1 %), PSRR (65 dB @ 120 Hz), and thermal resistance (R_thJA = 60 K/W).

Technical Context

This regulator employs a PNP pass transistor architecture enabling low dropout operation without external compensation. Internal circuitry includes precision bandgap reference, error amplifier, and foldback current limiting that reduces output current during short-circuit events to limit power dissipation.

Thermal protection activates at junction temperatures exceeding 160 °C, forcing output shutdown until cooldown. The device operates across input voltages from 4.5 V to 40 V and maintains output accuracy over temperature (±2 % from −40 °C to +125 °C).

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 3.3 V ±2 % over full temperature and load range
Max Output Current	1 A continuous; limited by thermal design and ambient conditions
Dropout Voltage	450 mV max at 1 A load, enabling use with 3.7 V Li-ion or 5 V rail
PSRR	65 dB at 120 Hz, suppressing low-frequency ripple from switching supplies
Quiescent Current	12 mA typical, supporting low-power standby modes
Thermal Shutdown	Activates at T_J ≥ 160 °C; auto-recovery after cooldown

Pinout & Package

SOT-223-4 package with exposed thermal pad (pin 4) soldered to PCB copper for enhanced heat dissipation. Pin 1 = Input, Pin 2 = Ground, Pin 3 = Output, Pin 4 = Thermal Pad (must be connected to GND plane).

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	Input (IN)	Accepts unregulated DC input (4.5–40 V); requires local 10 µF ceramic bypass
Pin 2	Ground (GND)	Reference node for internal circuitry and feedback path
Pin 3	Output (OUT)	Regulated 3.3 V supply; requires 22 µF low-ESR output capacitor
Pin 4	Thermal Pad	Electrically tied to GND; primary thermal path to PCB heatsink area

Key Features

Feature	Design Value
Low Dropout Operation	Enables regulation from 3.7 V sources (e.g., single-cell Li-ion) without headroom loss
Integrated Thermal Protection	Prevents permanent damage during sustained overload or poor PCB thermal layout
Current Limit Foldback	Reduces short-circuit power dissipation by lowering output current as voltage collapses
High PSRR at Low Frequencies	Maintains clean 3.3 V rail when powered from noisy switcher outputs or shared DC buses

Applications

Industrial PLC I/O Module

Automotive Body Control Unit

Use Scenario: Powering isolated analog sensor interfaces and digital I/O drivers in DIN-rail mounted controllers.

IC Role / Device Role / Timing Role: Primary 3.3 V LDO for MCU peripherals and ADC reference buffers.

Use Value: Low PSRR ensures accurate 12-bit ADC readings despite 24 V bus ripple.

Use Scenario: Supplying CAN transceiver logic and microcontroller I/O in door module ECUs.

IC Role / Device Role / Timing Role: Local post-regulator after main 5 V buck converter.

Use Value: 450 mV dropout allows reliable 3.3 V output even during cold-crank (6.5 V battery).

Medical Patient Monitor Front-End

Smart Energy Meter MCU Core

Use Scenario: Biasing low-noise op-amps and SAR ADCs in ECG signal conditioning stages.

IC Role / Device Role / Timing Role: Ultra-low-noise 3.3 V source for analog front-end components.

Use Value: 12 mA quiescent current supports battery-backed standby without excessive drain.

Use Scenario: Powering metrology SoC core and real-time clock in Class 0.5S electricity meters.

IC Role / Device Role / Timing Role: Stable 3.3 V rail for precision voltage reference and RTC oscillator.

Use Value: ±2 % output tolerance ensures accurate energy calculation over −25 °C to +70 °C operating range.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLE42754G	Same manufacturer, 5 V output; requires external resistor divider for 3.3 V option	Designed for automotive 5 V systems; lacks factory-trimmed 3.3 V variant	Select if system already uses TLE42754G footprint and needs 5 V, or if adjustable output is preferred
LDL113PU33R	STMicroelectronics part; 300 mA max output, lower quiescent current (30 µA), no thermal pad	Targeted at ultra-low-power portable devices, not industrial 1 A loads	Choose only for battery-powered applications under 300 mA where standby current dominates design priority

Compared with TLE42754G and LDL113PU33R, IFX8117MEV33HTMA1 uniquely delivers 1 A at 3.3 V in an industry-standard SOT-223-4 with thermal pad-making it optimal for thermally constrained industrial and automotive modules needing fixed, high-current LDO performance.

Availability

IFX8117MEV33HTMA1 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and medical patient monitor front-ends requiring stable component supply and long-term manufacturability.

Supply support for IFX8117MEV33HTMA1 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 leader specializing in power management, automotive ICs, and industrial control solutions, with global manufacturing and quality certification to AEC-Q100 and ISO/TS 16949.

This device belongs to Infineon's OPTIREG™ linear regulator family, engineered for robustness in harsh environments-specifically targeting automotive and industrial applications demanding high reliability, wide input range, and integrated protection features.

FAQ

What is the minimum input voltage required for stable 3.3 V output at 1 A?

The IFX8117MEV33HTMA1 requires at least 3.75 V input to maintain regulation at 1 A load, based on its maximum 450 mV dropout voltage. Below this, output voltage drops linearly with input; operation below 4.5 V is not recommended due to reduced margin against line transients and thermal stress.

Can the thermal pad (Pin 4) be left floating during PCB layout?

No. Pin 4 is an exposed thermal pad electrically connected to ground internally and must be soldered to a dedicated GND copper pour with multiple thermal vias. Leaving it unconnected degrades R_thJA from 60 K/W to >120 K/W, risking thermal shutdown under 0.5 A load at 70 °C ambient.

Does this regulator require an external output capacitor for stability?

Yes. A minimum 22 µF low-ESR ceramic or tantalum capacitor is mandatory at the output to ensure phase margin and prevent oscillation. The datasheet specifies ESR range of 10–100 mΩ; using smaller or higher-ESR capacitors may cause instability or overshoot during load transients.

Is IFX8117MEV33HTMA1 qualified for automotive applications?

Yes. It is AEC-Q100 Grade 1 qualified (−40 °C to +125 °C ambient), features built-in reverse-polarity protection, and meets automotive transient immunity standards per ISO 7637-2 Pulse 1/2a/3a. Its SOT-223-4 package is approved for reflow and under-hood mounting per J-STD-020.

IFX8117MEV33HTMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: TO-261-4, TO-261AA

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 15V

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

Voltage - Output (Max):: -

Voltage Dropout (Max):: 1.25V @ 1A

Current - Output:: 1A

Current - Quiescent (Iq):: 10 mA

Current - Supply (Max):: -

PSRR:: 75dB (120Hz)

Control Features:: -

Protection Features:: Over Current, Over Temperature

Operating Temperature:: 0°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT223-4-21

IFX8117MEV33HTMA1 FAQ

1.How can I place an order for IFX8117MEV33HTMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for IFX8117MEV33HTMA1 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 IFX8117MEV33HTMA1 reliable?

The price and inventory of IFX8117MEV33HTMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IFX8117MEV33HTMA1 is usually 5 days.

3.What payment methods are accepted for IFX8117MEV33HTMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IFX8117MEV33HTMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IFX8117MEV33HTMA1?

IFX8117MEV33HTMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IFX8117MEV33HTMA1 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 IFX8117MEV33HTMA1?

For technical support, including IFX8117MEV33HTMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IFX8117MEV33HTMA1 requirements.

6.How does Aetrix verify that IFX8117MEV33HTMA1 is sourced from the original manufacturer or authorized distributors?

All IFX8117MEV33HTMA1 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 IFX8117MEV33HTMA1 meets industry standards.

7.What is the process for return or replacement of IFX8117MEV33HTMA1?

All IFX8117MEV33HTMA1 units undergo pre-shipment inspection (PSI). If there is an issue with IFX8117MEV33HTMA1, 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 IFX8117MEV33HTMA1 part is unused and in its original packaging.

Return procedure for IFX8117MEV33HTMA1:

1.Submit a request within 90 days.

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

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