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Infineon Technologies IFX1117MEV33HTMA1
- Part No.:
- IFX1117MEV33HTMA1
- Manufacturer:
- Infineon Technologies
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
IFX1117MEV33HTMA1.pdf
- Description:
- IC REG LINEAR 3.3V 1A SOT223-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,212
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Product details
Overview
IFX1117MEV33HTMA1 from Infineon is a fixed-output 3.3 V, 1.0 A low-dropout linear voltage regulator in PG-SOT223 package, featuring ±2% output accuracy, <1.2 V dropout at 800 mA, short-circuit and overtemperature protection, and operation up to 125 °C junction temperature - used in industrial power rails for microcontrollers and sensors.
For engineers reviewing the IFX1117MEV33HTMA1 datasheet, IFX1117MEV33HTMA1 pinout, IFX1117MEV33HTMA1 application, or IFX1117MEV33HTMA1 equivalent, key selection criteria include dropout voltage at full load, thermal resistance (RthJA = 164 K/W bare footprint), stability with ≥10 µF/ESR ≤20 Ω output capacitor, and input voltage range (4.7–15 V) for reliable 3.3 V regulation.
Technical Context
The IFX1117MEV33HTMA1 is a monolithic NPN-based LDO regulator with internal reference (1.25 V), error amplifier, and pass transistor. It delivers regulated 3.3 V output without external feedback components, relying on internal trimming for ±2% tolerance across 0–125 °C.
Protection circuitry includes foldback current limiting (1100–2250 mA trip), thermal shutdown activation at ~150 °C junction temperature, and safe operating area enforcement. Its SOT223-4 package integrates the tab as an extension of the output pin for PCB heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±2% - ensures stable supply for 3.3 V logic interfaces and MCU cores under load and temperature variation. |
| Max Output Current | 1.0 A - supports moderate-power digital subsystems without external boost stages. |
| Dropout Voltage | 1.10 V @ 800 mA - enables operation from 4.7 V input when delivering full rated current. |
| PSRR | 65 dB @ 120 Hz - suppresses ripple from upstream switching supplies feeding the LDO input. |
| Thermal Resistance (RthJA) | 164 K/W (bare footprint) - requires careful PCB copper area planning for continuous 1 A operation at elevated ambient. |
| Operating Junction Temp | 0 to 125 °C - qualified for industrial environments without derating below 125 °C. |
| Output Noise | 30 ppm RMS (10 Hz–10 kHz) - suitable for noise-sensitive analog peripherals like ADC references. |
Pinout & Package
Package: PG-SOT223-4 (leadless variant of SOT-223), with exposed thermal tab electrically connected to pin 2 (Q) and pin 4 (TAB).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal bandgap and error amplifier; must be low-impedance connection to system ground plane. |
| 2 | Q (Output) | Regulated 3.3 V output; connects to 10 µF/ESR ≤20 Ω ceramic or tantalum capacitor for stability. |
| 3 | I (Input) | Unregulated DC input (4.7–15 V); requires local 100 nF decoupling near pin. |
| 4 (TAB) | Q (Output / Thermal Pad) | Electrically tied to pin 2; must be soldered to ≥300 mm² copper pour for thermal relief (RthJC = 4 K/W). |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 3.3 V output | No external resistors required - simplifies BOM and layout for dedicated 3.3 V rail generation. |
| Integrated overtemperature shutdown | Halts output above ~150 °C junction temperature and auto-recovers upon cooling - prevents thermal runaway in enclosed enclosures. |
| Short-circuit foldback current limit | Reduces output current to ~1.1 A during fault, limiting power dissipation and enabling safe restart after fault clearance. |
| RoHS-compliant green product | Meets EU Directive 2011/65/EU - supports environmental compliance for industrial and medical end equipment. |
| Stable with low-ESR capacitors | Guaranteed stability with COUT ≥10 µF and ESR ≤20 Ω - compatible with cost-effective polymer and ceramic capacitors. |
Applications
| Industrial PLC I/O Modules | Automotive Body Control Units (BCUs) |
|---|---|
Use Scenario: Powering isolated 3.3 V digital logic and CAN transceiver interfaces in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying FPGA configuration banks and RS-485 transceivers. Use Value: Dropout margin allows direct use of 5 V intermediate bus; thermal robustness sustains operation at 70 °C ambient with minimal heatsinking. | Use Scenario: Regulating 3.3 V for microcontroller peripherals (LIN, EEPROM, sensor ADCs) in non-safety-critical vehicle subsystems. IC Role / Device Role / Timing Role: Secondary post-regulator downstream of buck converter, providing clean supply for timing-critical analog blocks. Use Value: 30 ppm RMS noise and 65 dB PSRR ensure accurate 12-bit ADC conversions unaffected by engine-bay switching noise. |
| Medical Diagnostic Handhelds | Point-of-Sale (POS) Terminal Power Management |
Use Scenario: Supplying 3.3 V to low-power ARM Cortex-M4 MCU and optical sensor interface in battery-backed portable devices. IC Role / Device Role / Timing Role: Main system regulator enabling sleep-mode current draw <10 mA while maintaining regulation. Use Value: Low quiescent current (5–10 mA) and guaranteed start-up down to 4.7 V extend usable battery life between charges. | Use Scenario: Generating 3.3 V for EMV contactless smartcard readers and display drivers in retail terminals. IC Role / Device Role / Timing Role: Fixed-output LDO ensuring consistent voltage for secure element communication and touch controller timing. Use Value: ±2% output tolerance meets ISO/IEC 7816-3 voltage requirements for smartcard interface reliability. |
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 |
|---|---|---|---|
| TLV1117-33CDCYR | Lower max current (800 mA), higher dropout (1.2 V @ 800 mA), RthJA = 199 K/W (SOT-223) | Limited to lower-power applications; less thermal headroom in compact layouts | Choose if cost sensitivity outweighs 200 mA current margin and thermal performance needs |
| LD1117S33TR | Same 1.0 A rating but ±2% tolerance only at 25 °C; wider temp drift (±3% over -40 to 125 °C) | May require additional margin in wide-temp industrial deployments | Prefer when operating exclusively at room temperature or where tighter initial tolerance is sufficient |
Compared with TLV1117-33CDCYR and LD1117S33TR, the IFX1117MEV33HTMA1 provides superior thermal performance (RthJA = 164 K/W), guaranteed ±2% tolerance across full temperature range, and higher short-circuit current capability - making it optimal for thermally constrained, high-reliability industrial designs.
Availability
IFX1117MEV33HTMA1 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and medical handheld diagnostics requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for IFX1117MEV33HTMA1 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 IFX1117 series belongs to Infineon's industrial-grade linear regulator portfolio, designed specifically for robust, high-temperature-stable power delivery in factory automation, transportation infrastructure, and medical equipment where reliability and thermal resilience are critical.
FAQ
What is the minimum input voltage required for 1.0 A output at 3.3 V?
The IFX1117MEV33HTMA1 requires a minimum input voltage of 4.7 V to sustain 1.0 A output current while maintaining regulation. This accounts for its typical dropout voltage of 1.10–1.40 V across the load range, verified per datasheet Table 5 characteristics at Tj = 25 °C and full load.
Can this device be used without an output capacitor?
No. The IFX1117MEV33HTMA1 requires a minimum 10 µF output capacitor with ESR ≤20 Ω for stability, as specified in Table 1 and Figure 5. Omitting it risks oscillation or thermal shutdown due to loop instability, especially under dynamic load conditions.
Is the thermal pad (pin 4) electrically isolated?
No. Pin 4 (TAB) is electrically connected to pin 2 (Q/output) and must be soldered to a PCB copper pour tied to the 3.3 V output net. This dual role provides both thermal conduction and electrical continuity - isolation would compromise thermal performance and violate the device's internal topology.
Does this part support reverse polarity protection?
No. The IFX1117MEV33HTMA1 lacks integrated reverse-polarity protection. Applying reverse voltage (>−0.3 V on pin 3 relative to pin 1) exceeds absolute maximum ratings and may cause permanent damage. External protection diodes or MOSFET-based circuits are required for such scenarios.
IFX1117MEV33HTMA1 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):
- 1.4V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 10 mA
- Current - Supply (Max):
- -
- PSRR:
- 65dB (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
IFX1117MEV33HTMA1 FAQ
1.How can I place an order for IFX1117MEV33HTMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for IFX1117MEV33HTMA1 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 IFX1117MEV33HTMA1 reliable?
The price and inventory of IFX1117MEV33HTMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IFX1117MEV33HTMA1 is usually 5 days.
3.What payment methods are accepted for IFX1117MEV33HTMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IFX1117MEV33HTMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IFX1117MEV33HTMA1?
IFX1117MEV33HTMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IFX1117MEV33HTMA1 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 IFX1117MEV33HTMA1?
For technical support, including IFX1117MEV33HTMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IFX1117MEV33HTMA1 requirements.
6.How does Aetrix verify that IFX1117MEV33HTMA1 is sourced from the original manufacturer or authorized distributors?
All IFX1117MEV33HTMA1 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 IFX1117MEV33HTMA1 meets industry standards.
7.What is the process for return or replacement of IFX1117MEV33HTMA1?
All IFX1117MEV33HTMA1 units undergo pre-shipment inspection (PSI). If there is an issue with IFX1117MEV33HTMA1, 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 IFX1117MEV33HTMA1 part is unused and in its original packaging.
Return procedure for IFX1117MEV33HTMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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