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

Infineon Technologies TLF2931GV50XUMA1

Name: TLF2931GV50XUMA1
Brand: Infineon Technologies
SKU: TLF2931GV50XUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLF2931GV50XUMA1

Manufacturer:: Infineon Technologies

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

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

Datasheet:: TLF2931GV50XUMA1.pdf

Description:: IC REG LINEAR 5V 100MA DSO8

Quantity:: RFQ Add To RFQ list

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Inventory:2,522

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Product details

Overview

TLF2931GV50XUMA1 from Infineon Technologies is an AEC-Q100 qualified automotive-grade low-dropout linear voltage regulator delivering a fixed 5.0 V output with ≤0.2 V dropout at 10 mA, 1 mA quiescent current at 10 mA load, reverse battery protection, and thermal shutdown. It operates from 6 V to 28 V input and supports up to 100 mA output in PG-DSO-8 package for vehicle body control modules.

For engineers reviewing the TLF2931GV50XUMA1 datasheet, TLF2931GV50XUMA1 pinout, TLF2931GV50XUMA1 application, or TLF2931GV50XUMA1 equivalent, key selection criteria include dropout voltage under light load, reverse polarity tolerance, junction temperature range (–40 °C to 125 °C), and compliance with automotive standby power requirements.

Technical Context

The TLF2931GV50XUMA1 integrates bandgap reference, error amplifier, and saturation control circuitry to maintain stable 5.0 V regulation across wide input (6–28 V) and load (0–100 mA) ranges. Its mirror-image insertion protection and reverse battery capability enable robust deployment in 12 V/24 V automotive electrical systems without external diodes.

Thermal shutdown activates at 125 °C junction temperature, and current limiting prevents damage during short-circuit events. The device uses internal compensation and requires only a 10 µF output capacitor with specified ESR, eliminating need for external compensation networks.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	5.0 V ±5% (4.75–5.25 V at 25 °C); ensures compatibility with 5 V microcontrollers and sensors
Dropout Voltage	0.05–0.2 V at 10 mA; enables operation with <6.2 V input in cold-crank scenarios
Quiescent Current	0.4–1 mA at 10 mA load; minimizes battery drain in always-on vehicle modules
Input Voltage Range	6–28 V; withstands load dump (28 V) and reverse battery (–30 V) per AEC-Q100
Junction Temp Range	–40 °C to 125 °C; validated for under-hood and cabin-mounted automotive ECUs
Output Current	100 mA max; sufficient for powering CAN transceivers, LIN interfaces, and small logic loads
Ripple Rejection	80 dB at 120 Hz; suppresses alternator ripple in engine-running conditions

Pinout & Package

TLF2931GV50XUMA1 is housed in a PG-DSO-8 surface-mount package (8-pin SOIC variant with exposed thermal pad), optimized for automotive PCB thermal management and automated assembly.

Pin/Terminal	Circuit Role	Design Meaning
1	OUT	Regulated 5.0 V output; requires 10 µF ceramic capacitor placed adjacent to pin
2,3,6,7	GND	Ground return paths; all four pins must be connected to PCB ground plane for thermal and noise performance
4,5	n.c.	No internal connection; left unconnected per design; no routing or soldering required
8	IN	Main input supply; recommended to add local 100 nF capacitor to GND near this pin

Key Features

Feature	Design Value
Reverse Battery Protection	Withstands –30 V input continuously; eliminates need for external series diode in battery-connected circuits
Mirror-Image Insertion Protection	Immune to damage if mounted 180° rotated; reduces manufacturing defect risk in high-volume SMT lines
Thermal Shutdown	Activates at 125 °C junction temperature and auto-recovers upon cooling; prevents permanent failure during overload
Low Noise Output	500 µV_rms (100 Hz–10 kHz); suitable for analog sensor front-ends and precision ADC references
AEC-Q100 Qualified	Grade 1 (–40 °C to 125 °C) qualification confirmed; meets automotive reliability and stress test requirements

Applications

Body Control Module (BCM)

Door Module

Use Scenario: Powering microcontroller, CAN transceiver, and window motor driver IC in vehicle door electronics.

IC Role / Device Role / Timing Role: Primary 5 V LDO supplying always-on logic and wake-up circuitry.

Use Value: 1 mA quiescent current extends battery life during vehicle sleep mode; reverse battery protection avoids field failures.

Use Scenario: Regulating supply for LIN slave nodes controlling mirror, lock, and puddle lamp functions.

IC Role / Device Role / Timing Role: Standby power source enabling fast wake-up from deep sleep (<100 µA system current).

Use Value: 0.2 V dropout allows operation down to 5.2 V input-critical during cold-crank battery sag.

Instrument Cluster

Telematics Control Unit (TCU)

Use Scenario: Providing clean 5 V rail to display driver IC and EEPROM in digital dashboard assemblies.

IC Role / Device Role / Timing Role: Low-noise post-regulator after DC/DC converter to reduce EMI on sensitive display signals.

Use Value: 500 µV_rms output noise prevents visual artifacts on TFT LCD panels.

Use Scenario: Supplying GPS baseband processor and cellular modem subsystems requiring stable 5 V during ignition cycles.

IC Role / Device Role / Timing Role: Fault-tolerant LDO handling load dump transients up to 28 V without latch-up.

Use Value: Withstands 42 V absolute max input-covers worst-case ISO 7637-2 pulse 5a surge events.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLF2931GV33XUMA1	Fixed 3.3 V output; higher dropout (0.85–1.1 V at 100 mA); same package and protection features	Used where 3.3 V logic domains dominate (e.g., MCU core supply), not 5 V peripherals	Select when system architecture requires 3.3 V regulation with identical automotive robustness
TPS7B6750QPWPRQ1	5 V output; 120 mA I_OUT; 1.3 µA quiescent current; integrated enable pin; different pinout (HTSSOP-8)	Enables ultra-low-power wake-up sequencing via EN control; lacks mirror-image insertion protection	Choose when system-level power sequencing or sub-µA sleep current is mandatory

Compared with TLF2931GV33XUMA1, the TLF2931GV50XUMA1 delivers lower dropout for 5 V systems under battery sag; versus TPS7B6750QPWPRQ1, it trades ultra-low I_q for proven mirror-insertion immunity and simpler enable-free operation.

Availability

TLF2931GV50XUMA1 is available at Aetrix Electronics and suitable for body control modules, instrument clusters, telematics units, and door modules requiring stable component supply across automotive production lifecycles.

Supply support for TLF2931GV50XUMA1 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, and industrial control ICs, with global R&D and wafer fabrication infrastructure.

The TLF2931 product line targets automotive power supply applications demanding high reliability, reverse polarity resilience, and extended temperature operation-designed specifically for body electronics and infotainment subsystems.

FAQ

What is the minimum input voltage required for regulation at full 100 mA load?

The TLF2931GV50XUMA1 maintains regulation down to 5.6 V input at 100 mA load, based on its maximum dropout of 0.6 V (5.0 V + 0.6 V = 5.6 V). This ensures functionality during automotive cold-crank events where battery voltage dips below 6 V.

Can the n.c. pins (4 and 5) be used for thermal relief or grounding?

No-pins 4 and 5 are internally unconnected and must remain floating. Connecting them to ground or copper pour violates the PG-DSO-8 layout specification and may compromise thermal performance or ESD robustness. Only pins 2, 3, 6, and 7 serve as GND terminals.

Is an input capacitor mandatory, and what value is recommended?

Yes-an input capacitor is mandatory for stability and transient suppression. A 100 nF X7R ceramic capacitor placed within 2 mm of pin 8 (IN) and GND is recommended per the datasheet. Larger bulk capacitance (e.g., 10 µF) may be added upstream but does not replace the local 100 nF requirement.

Does the device require an external resistor divider for output voltage adjustment?

No-the TLF2931GV50XUMA1 is a fixed-output regulator with internal feedback network. It provides exactly 5.0 V without external components. Adjustable versions (e.g., TLF2931CV50) exist but use different part numbers and pin configurations.

TLF2931GV50XUMA1 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):: 28V

Voltage - Output (Min/Fixed):: 5V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.6V @ 100mA

Current - Output:: 100mA

Current - Quiescent (Iq):: 1 mA

Current - Supply (Max):: 15 mA

PSRR:: 80dB (120Hz)

Control Features:: -

Protection Features:: Mirror-Image Insertion, Over Current, Over Temperature, Reverse Polarity

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: PG-DSO-8

TLF2931GV50XUMA1 FAQ

1.How can I place an order for TLF2931GV50XUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLF2931GV50XUMA1 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 TLF2931GV50XUMA1 reliable?

The price and inventory of TLF2931GV50XUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLF2931GV50XUMA1 is usually 5 days.

3.What payment methods are accepted for TLF2931GV50XUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLF2931GV50XUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLF2931GV50XUMA1?

TLF2931GV50XUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLF2931GV50XUMA1 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 TLF2931GV50XUMA1?

For technical support, including TLF2931GV50XUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLF2931GV50XUMA1 requirements.

6.How does Aetrix verify that TLF2931GV50XUMA1 is sourced from the original manufacturer or authorized distributors?

All TLF2931GV50XUMA1 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 TLF2931GV50XUMA1 meets industry standards.

7.What is the process for return or replacement of TLF2931GV50XUMA1?

All TLF2931GV50XUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLF2931GV50XUMA1, 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 TLF2931GV50XUMA1 part is unused and in its original packaging.

Return procedure for TLF2931GV50XUMA1:

1.Submit a request within 90 days.

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

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