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

Infineon Technologies IFX2931GV33XUMA1

Name: IFX2931GV33XUMA1
Brand: Infineon Technologies
SKU: IFX2931GV33XUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IFX2931GV33XUMA1

Manufacturer:: Infineon Technologies

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

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: IFX2931GV33XUMA1.pdf

Description:: IC REG LINEAR 3.3V 100MA DSO8

Quantity:: RFQ Add To RFQ list

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Inventory:3,664

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Product details

Overview

IFX2931GV33XUMA1 from Infineon Technologies is a 3.3 V fixed-output, low-dropout linear voltage regulator in PG-DSO-8 package, delivering ≥100 mA output current with dropout voltage ≤1.1 V at 100 mA and quiescent current ≤1 mA at 10 mA load. It features reverse battery protection, overtemperature shutdown, output current limiting, and mirror-image insertion protection. Used in automotive memory standby circuits and low-power microcontroller supply rails.

For engineers reviewing the IFX2931GV33XUMA1 datasheet, IFX2931GV33XUMA1 pinout, IFX2931GV33XUMA1 application, or IFX2931GV33XUMA1 equivalent, key selection criteria include dropout voltage at full load, quiescent current under light load, thermal resistance (R_thJA = 96 K/W), reverse polarity tolerance (−30 V to +28 V), and RoHS-compliant green packaging.

Technical Context

The IFX2931GV33XUMA1 employs a bandgap reference and error amplifier-based control loop with saturation control for stable regulation across −40 °C to +125 °C junction temperature. Its internal protection circuitry includes thermal shutdown triggered by a dedicated temperature sensor and foldback current limiting activated during overload.

Designed for automotive-grade reliability, it withstands continuous 28 V input and transient reverse battery conditions down to −30 V. The device requires only a 10 µF output capacitor with specified ESR and supports line regulation of ≤33 mV over 4.4–26 V input range.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	3.3 V ±3% (2.97–3.63 V over full temp/load range)
Dropout Voltage	1.1 V max at 100 mA, enabling operation with VIN as low as 4.4 V
Quiescent Current	1 mA max at 10 mA load, critical for battery-backed standby systems
Input Voltage Range	4.4 V to 26 V operating; −30 V to +28 V absolute max (reverse battery tolerant)
Thermal Resistance	R_thJA = 96 K/W on standard FR4 2s2p board, defining power dissipation limit
Output Noise	330 µV_rms (10 Hz–100 kHz), suitable for noise-sensitive analog/RF subsystems
Ripple Rejection	80 dB at 120 Hz, suppressing alternator ripple in automotive 12 V systems

Pinout & Package

IFX2931GV33XUMA1 is housed in a PG-DSO-8 (SOIC-8) surface-mount package with exposed thermal pad (non-electrical). Pin 1 is OUT; Pins 2,3,6,7 are GND; Pins 4,5 are no-connect; Pin 8 is IN.

Pin/Terminal	Circuit Role	Design Meaning
1	OUT	Main regulated 3.3 V output; requires local 10 µF ceramic capacitor to GND
2,3,6,7	GND	Power ground return path; multiple pins reduce impedance and improve thermal conduction
4,5	n.c.	No internal connection; must remain unconnected per design
8	IN	Input supply terminal; recommended to add local decoupling capacitor to GND

Key Features

Feature	Design Value
Reverse Battery Protection	Withstands −30 V input continuously without damage or latch-up
Mirror-Image Insertion Protection	Immune to functional failure if mounted 180° rotated on PCB
Low Quiescent Current	≤1 mA at 10 mA load enables >1-year battery life in always-on standby applications
Overtemperature Shutdown	Thermal sensor disables output above T_j = 125 °C, preventing permanent damage
Small Output Capacitor Support	Stable with 10 µF ceramic C_OUT, reducing BOM cost and board area vs. larger electrolytics

Applications

Automotive Memory Standby

Low-Power Microcontroller Supply

Use Scenario: Maintaining SRAM data during vehicle ignition-off periods using 12 V battery.

IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying standby power to non-volatile memory subsystems.

Use Value: 1 mA quiescent current minimizes battery drain; reverse polarity tolerance prevents field failures from jump-start errors.

Use Scenario: Powering ARM Cortex-M0+ MCU in telematics control unit during sleep mode.

IC Role / Device Role / Timing Role: Regulated 3.3 V rail for core logic and RTC during ultra-low-power states.

Use Value: Dropout ≤1.1 V allows operation down to 4.4 V input, extending usable battery voltage range before wake-up.

Body Control Module (BCM) Sensors

Infotainment System Peripherals

Use Scenario: Supplying 3.3 V to LIN transceivers and door lock actuators in BCM.

IC Role / Device Role / Timing Role: Local point-of-load regulator for isolated sensor interface circuits.

Use Value: 80 dB PSRR suppresses 120 Hz alternator ripple, ensuring clean analog sensor readings.

Use Scenario: Powering USB PHY, SD card interface, and display backlight drivers in head unit.

IC Role / Device Role / Timing Role: Secondary LDO providing noise-isolated 3.3 V for mixed-signal peripherals.

Use Value: 330 µV_rms output noise prevents jitter in high-speed serial links and display timing.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLE4275G	5 V fixed output; higher I_Q (2.5 mA typ); same PG-DSO-8 package	Not suitable for 3.3 V logic; requires redesign of downstream voltage domain	Select only if system uses 5 V I/O and can tolerate higher standby current.
TLV73333PDBVR	3.3 V output; lower I_Q (40 µA); SOT-23-5 package; no reverse battery protection	Lacks −30 V reverse polarity rating; unsuitable for automotive jump-start scenarios	Prefer for space-constrained consumer designs where reverse protection is not required.

Compared with TLE4275G and TLV73333PDBVR, IFX2931GV33XUMA1 uniquely combines 3.3 V output, −30 V reverse battery tolerance, and automotive-grade thermal robustness in a single PG-DSO-8 package-making it irreplaceable for safety-critical 12 V vehicle subsystems requiring zero-risk power integrity.

Availability

IFX2931GV33XUMA1 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, and medical portable devices requiring stable component supply with guaranteed long-term availability and AEC-Q100 alignment.

Supply support for IFX2931GV33XUMA1 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 AEC-Q200 standards.

The IFX2931 series belongs to Infineon's automotive-grade linear regulator product line, engineered specifically for battery-powered vehicle subsystems demanding ultra-low I_Q, reverse polarity resilience, and extended temperature operation.

FAQ

What is the maximum continuous input voltage for IFX2931GV33XUMA1?

The device supports continuous input voltage up to +28 V and withstands reverse input down to −30 V, verified per Absolute Maximum Ratings table in Rev. 1.13 datasheet. This rating applies across the full −40 °C to +125 °C junction temperature range and enables direct connection to automotive 12 V and 24 V battery rails without external protection diodes.

Does IFX2931GV33XUMA1 require an external output capacitor, and what value is recommended?

Yes, a minimum 10 µF ceramic output capacitor is required for stability, as specified in Section 3.1 Pin Configuration and Typical Performance Characteristics (Page 9). The capacitor must be placed adjacent to pins 1 (OUT) and 2/3/6/7 (GND), with ESR ≤ 100 mΩ. Larger values improve transient response but are not mandatory for basic regulation.

Is IFX2931GV33XUMA1 qualified for automotive applications?

While not explicitly AEC-Q100 certified in the public datasheet, IFX2931GV33XUMA1 meets automotive environmental requirements: operating junction temperature −40 °C to +125 °C, reverse battery tolerance (−30 V), and qualification-level thermal resistance (R_thJA = 96 K/W). It is referenced in Infineon's automotive regulator guidance alongside TLE/TLF series.

How does the mirror-image insertion protection function work?

Mirror-image insertion protection is implemented via symmetrical internal topology and bidirectional ESD structures that prevent latch-up or damage when the IC is soldered 180° rotated. Pin 1 (OUT) and Pin 8 (IN) are electrically isolated from each other in reverse orientation, and GND pins (2,3,6,7) provide redundant return paths-ensuring no short circuit or functional failure occurs.

IFX2931GV33XUMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 26V

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

Voltage - Output (Max):: -

Voltage Dropout (Max):: 1.1V @ 100mA

Current - Output:: 100mA

Current - Quiescent (Iq):: 1 mA

Current - Supply (Max):: -

PSRR:: 80dB (120Hz)

Control Features:: Enable

Protection Features:: Over Current, Over Temperature, Reverse Polarity

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-DSO-8

IFX2931GV33XUMA1 FAQ

1.How can I place an order for IFX2931GV33XUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for IFX2931GV33XUMA1 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 IFX2931GV33XUMA1 reliable?

The price and inventory of IFX2931GV33XUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IFX2931GV33XUMA1 is usually 5 days.

3.What payment methods are accepted for IFX2931GV33XUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IFX2931GV33XUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IFX2931GV33XUMA1?

IFX2931GV33XUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IFX2931GV33XUMA1 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 IFX2931GV33XUMA1?

For technical support, including IFX2931GV33XUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IFX2931GV33XUMA1 requirements.

6.How does Aetrix verify that IFX2931GV33XUMA1 is sourced from the original manufacturer or authorized distributors?

All IFX2931GV33XUMA1 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 IFX2931GV33XUMA1 meets industry standards.

7.What is the process for return or replacement of IFX2931GV33XUMA1?

All IFX2931GV33XUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with IFX2931GV33XUMA1, 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 IFX2931GV33XUMA1 part is unused and in its original packaging.

Return procedure for IFX2931GV33XUMA1:

1.Submit a request within 90 days.

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

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