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

Infineon Technologies IFX1117MEVHTMA1

Name: IFX1117MEVHTMA1
Brand: Infineon Technologies
SKU: IFX1117MEVHTMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IFX1117MEVHTMA1

Manufacturer:: Infineon Technologies

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

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

Datasheet:: IFX1117MEVHTMA1.pdf

Description:: IC REG LIN POS ADJ 1A SOT223-4

Quantity:: RFQ Add To RFQ list

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Inventory:3,510

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Product details

Overview

IFX1117MEVHTMA1 from Infineon is a fixed-output 3.3 V, 1.0 A low-dropout linear voltage regulator in PG-SOT223 package, featuring <1.2 V dropout at 800 mA, ±2% output voltage accuracy, and integrated short-circuit and overtemperature protection. It operates from 4.7 V to 15 V input and supports industrial applications requiring stable 3.3 V rail for microcontrollers and logic circuits.

For engineers reviewing the IFX1117MEVHTMA1 datasheet, IFX1117MEVHTMA1 pinout, IFX1117MEVHTMA1 application, or IFX1117MEVHTMA1 equivalent, key selection criteria include dropout voltage at full load, thermal resistance (R_thJA = 164 K/W bare footprint), output stability with ≥10 µF/ESR ≤20 Ω capacitor, and junction temperature range (0–125 °C).

Technical Context

The IFX1117MEVHTMA1 is a monolithic NPN-type LDO regulator with internal reference (1.25 V), error amplifier, and pass transistor. Its fixed 3.3 V output is trimmed during production to ±2% tolerance across 0–125 °C junction temperature.

Protection circuitry includes foldback current limiting (1100–2250 mA trip), thermal shutdown activation at T_j ≥150 °C, and safe operating area enforcement. Input-to-output differential must remain ≥0.3 V to avoid reverse biasing of internal junctions.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	3.30 V ±2% - ensures compatible logic-level supply for ARM Cortex-M, FPGA I/O banks, and USB PHYs
Max Output Current	1.0 A - supports single-rail power for mid-complexity embedded controllers without external boost
Dropout Voltage	1.10 V @ 800 mA - enables operation from 4.7 V input when powering 3.3 V loads from 5 V bus
Line Regulation	≤6 mV (4.7–15 V input) - maintains output stability despite upstream DC-DC ripple or battery sag
PSRR	65 dB @ 120 Hz - suppresses rectified AC noise from unregulated wall adapters
RMS Output Noise	30 ppm of V_Q (10 Hz–10 kHz) - avoids jitter in clock buffers or ADC reference paths
Junction Temp Range	0 °C to 125 °C - qualified for industrial control cabinets and motor drive auxiliary rails

Pinout & Package

IFX1117MEVHTMA1 uses the PG-SOT223 package: 4-terminal surface-mount device with exposed thermal pad (pin 4/TAB) electrically connected to output (Q). Standard footprint per Infineon AEP02868_1117_01.

Pin/Terminal	Circuit Role	Design Meaning
1	GND	Ground reference for internal bandgap and error amplifier; requires low-impedance PCB plane connection
2	Q (Output)	Regulated 3.3 V output; must be decoupled with ≥10 µF ceramic or tantalum cap (ESR ≤20 Ω)
3	I (Input)	Unregulated input (4.7–15 V); requires local 100 nF bypass near pin per Figure 4
4 (TAB)	Q (Output)	Thermal pad tied internally to output; must be soldered to ≥300 mm² copper pour for R_thJA = 81 K/W

Key Features

Feature	Design Value
Fixed 3.3 V output	Factory-trimmed to ±2% over full temperature and load range-eliminates external resistor network and associated drift
Low dropout	1.10 V max @ 800 mA-enables use with 5 V intermediate bus while maintaining margin for aging and tolerance
Integrated protection	Auto-recovering thermal shutdown + foldback current limit-prevents latch-up during sustained overload without external circuitry
Stable with ceramic caps	Validated with ≥10 µF/ESR ≤20 Ω-supports low-profile, high-reliability MLCC solutions instead of bulkier electrolytics
Green product	RoHS-compliant, halogen-free, and lead-free-meets IPC-J-STD-609A and EU Directive 2011/65/EU

Applications

Industrial PLC I/O Module

Automotive Body Control Unit (BCU)

Use Scenario: Powering isolated digital input conditioning circuits and CAN transceiver VCC rails in DIN-rail mounted controllers.

IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying microcontroller core, GPIO expander, and optocoupler drivers.

Use Value: 1.1 V dropout allows direct derivation from 5 V system bus; thermal shutdown prevents field failure during ambient temperature spikes.

Use Scenario: Regulating 3.3 V for LIN transceivers, EEPROM, and sensor interface ICs in door module ECUs.

IC Role / Device Role / Timing Role: Secondary regulated supply derived from vehicle battery via pre-regulator; not automotive-qualified but used in non-safety subsystems.

Use Value: ±2% output tolerance ensures reliable SPI communication with flash memory; PSRR >65 dB suppresses alternator ripple.

Medical Patient Monitor Front-End

Network Edge Router Management Card

Use Scenario: Providing clean 3.3 V to analog front-end ADCs, op-amps, and low-power MCU in portable diagnostic devices.

IC Role / Device Role / Timing Role: Low-noise analog supply rail decoupled from digital domains using separate LDO stage.

Use Value: 30 ppm RMS noise minimizes quantization error in 12-bit medical-grade ADCs; GND pin isolation reduces ground bounce coupling.

Use Scenario: Powering management ASICs, eMMC, and Ethernet PHYs on hot-swappable service processor cards.

IC Role / Device Role / Timing Role: Standby rail regulator enabling fast wake-up from deep sleep without external sequencing.

Use Value: 1.0 A capacity supports burst-mode CPU activity; R_thJC = 4 K/W enables conduction cooling through heatsink tab.

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
TLV1117-33CDCR	Lower IQ (5 mA typ), higher PSRR (70 dB), but R_thJA = 199 K/W (SOIC-8) - no thermal pad	Requires larger PCB area for thermal relief; unsuitable for high-ambient sealed enclosures	Select when board space permits SOIC layout and lower quiescent current is prioritized over thermal performance
LD1117S33TR	Same SOT-223 package, but ±2% tolerance only at 25 °C; no guaranteed spec over full temp range	Limited to commercial-temp applications; fails industrial qualification testing above 85 °C ambient	Select only for cost-sensitive consumer products with controlled thermal environments

Compared with TLV1117-33CDCR and LD1117S33TR, IFX1117MEVHTMA1 delivers superior thermal performance (R_thJA = 164 K/W bare, 81 K/W with heatsink) and guaranteed ±2% regulation across 0–125 °C, making it preferred for industrial edge nodes where ambient derating and long-term stability are critical.

Availability

IFX1117MEVHTMA1 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, medical patient monitor front-ends, network edge router management cards, and automotive body control units requiring stable component supply with traceable sourcing and lifecycle continuity.

Supply support for IFX1117MEVHTMA1 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 AG is a German semiconductor manufacturer specializing in power management, automotive MCUs, and industrial control ICs, with global manufacturing and quality certification to ISO/TS 16949 and ISO 14001.

The IFX1117 product line delivers robust, thermally optimized LDO regulators for industrial and transportation systems where reliability under thermal stress and long-term voltage stability are mandatory design requirements.

FAQ

What is the minimum input voltage required for 1.0 A output current?

The minimum input voltage is 4.7 V, defined by V_IN = V_OUT + V_DR, where V_DR = 1.4 V max at 1.0 A. Below this, regulation fails and output drops. This value is validated across 0–125 °C junction temperature and accounts for worst-case dropout and tolerance stack-up.

Can IFX1117MEVHTMA1 be used with ceramic output capacitors?

Yes-Infineon validates stability with ≥10 µF ceramic capacitors having ESR ≤20 Ω, as specified in Figure 5 and "Region of Stability" graph. No series resistor is needed, unlike older LDOs. X7R or X5R dielectrics are recommended for temperature stability.

Is the thermal pad (pin 4) electrically isolated?

No-the exposed thermal pad (pin 4/TAB) is internally connected to the output (Q) terminal. It must be soldered to a PCB copper pour tied to the 3.3 V output net and sized ≥300 mm² to achieve R_thJA = 81 K/W. Floating or grounding the pad causes functional failure.

Does IFX1117MEVHTMA1 support adjustable output configurations?

No-IFX1117MEVHTMA1 is the fixed 3.3 V variant (IFX1117ME V33). The adjustable version is IFX1117ME V, which has an ADJ pin and requires external resistors. Pinout, marking, and internal trimming differ; they are not interchangeable without PCB redesign.

IFX1117MEVHTMA1 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:: Adjustable

Number of Regulators:: 1

Voltage - Input (Max):: 15V

Voltage - Output (Min/Fixed):: 1.25V

Voltage - Output (Max):: 13.6V

Voltage Dropout (Max):: 1.4V @ 1A

Current - Output:: 1A

Current - Quiescent (Iq):: 5 mA

Current - Supply (Max):: -

PSRR:: 70dB (120Hz)

Control Features:: -

Protection Features:: Over Current, Over Temperature, Short Circuit

Operating Temperature:: 0°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

IFX1117MEVHTMA1 FAQ

1.How can I place an order for IFX1117MEVHTMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for IFX1117MEVHTMA1 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 IFX1117MEVHTMA1 reliable?

The price and inventory of IFX1117MEVHTMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IFX1117MEVHTMA1 is usually 5 days.

3.What payment methods are accepted for IFX1117MEVHTMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IFX1117MEVHTMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IFX1117MEVHTMA1?

IFX1117MEVHTMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IFX1117MEVHTMA1 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 IFX1117MEVHTMA1?

For technical support, including IFX1117MEVHTMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IFX1117MEVHTMA1 requirements.

6.How does Aetrix verify that IFX1117MEVHTMA1 is sourced from the original manufacturer or authorized distributors?

All IFX1117MEVHTMA1 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 IFX1117MEVHTMA1 meets industry standards.

7.What is the process for return or replacement of IFX1117MEVHTMA1?

All IFX1117MEVHTMA1 units undergo pre-shipment inspection (PSI). If there is an issue with IFX1117MEVHTMA1, 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 IFX1117MEVHTMA1 part is unused and in its original packaging.

Return procedure for IFX1117MEVHTMA1:

1.Submit a request within 90 days.

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

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