Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Infineon Technologies TLF50241ELXUMA2

Name: TLF50241ELXUMA2
Brand: Infineon Technologies
SKU: TLF50241ELXUMA2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: TLF50241ELXUMA2

Manufacturer:: Infineon Technologies

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 14-LSSOP (0.154", 3.90mm Width) Exposed Pad

Datasheet:: TLF50241ELXUMA2.pdf

Description:: IC REG BUCK 5V 500MA PGSSOP14

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:39,504

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

TLF50241ELXUMA2 from Infineon is a 2.2 MHz, 500 mA step-down DC/DC regulator with integrated PMOS power switch, fixed 5 V output (±2% tolerance), 4.75–45 V input range, and <45 µA quiescent current-designed for automotive body, infotainment, and engine management systems operating from −40°C to +150°C junction temperature.

For engineers reviewing the TLF50241ELXUMA2 datasheet, TLF50241ELXUMA2 pinout, TLF50241ELXUMA2 application, or TLF50241ELXUMA2 equivalent, key selection criteria include its PFM/PWM hybrid regulation, synchronization input, reset generator, soft-start function, and PG-SSOP-14 exposed-pad thermal performance under automotive transients.

Technical Context

The TLF50241ELXUMA2 implements current-mode PWM control with internal compensation, enabling high line transient rejection and stable loop behavior without external compensation components. Its 2.2 MHz fixed-frequency operation supports compact LC filtering, while PFM mode activates below ~10 mA load to maintain >85% efficiency at light loads.

It integrates a reset generator with adjustable threshold (via RTADJ resistor divider), cycle-by-cycle current limiting, overtemperature shutdown, and input undervoltage lockout (UVLO) at ~4.2 V. The SYNC pin allows external clock synchronization, and FREQ pin enables resistor-based frequency tuning near 2.2 MHz.

Key Specifications

Parameter	Value and Actual Design Meaning
Output voltage	Fixed 5.0 V ±2%; eliminates need for external feedback resistors and ensures compliance with automotive 5 V logic rail requirements.
Max output current	500 mA continuous; sufficient to power microcontrollers, CAN transceivers, and sensor interfaces in distributed ECUs.
Input voltage range	4.75 V to 45 V; accommodates cold-crank (4.5 V) and load-dump (40 V+) conditions per ISO 7637-2 without external protection.
Quiescent current	<45 µA at nominal battery voltage; enables always-on functionality in gateway modules with <100 µA system standby budget.
Switching frequency	2.2 MHz nominal; permits use of ≤4.7 µH inductors and 10–22 µF ceramic output capacitors, reducing solution footprint by >40% vs. 500 kHz designs.
Operating temperature	Junction range −40°C to +150°C; qualified per AEC-Q100 Grade 0, supporting placement near engines or under-hood ECUs.
Protection features	Cycle-by-cycle current limit, thermal shutdown, UVLO, and open-drain reset output with programmable threshold-enables robust single-chip power sequencing.

Pinout & Package

TLF50241ELXUMA2 is housed in a thermally enhanced PG-SSOP-14 package with exposed pad, optimized for automotive PCB layouts requiring low thermal resistance (R_thJA = 47 K/W, 2s2p JEDEC standard) and high vibration reliability.

Pin/Terminal	Circuit Role	Design Meaning
1 RO	Reset output	Open-drain signal indicating regulated output validity; requires external pull-up to enable MCU reset assertion during brown-out.
2,3,8,12,14 N.C.	No connect	Internally unconnected pins; may be tied to GND for mechanical stability but carry no electrical function.
4 SYNC	Synchronization input	Accepts external 1.5–3.0 V square wave to align switching edges across multiple regulators, reducing EMI peak emissions.
5 FREQ	Frequency adjustment	Resistor-to-GND sets nominal switching frequency; default value yields 2.2 MHz; required when SYNC is unused.
6 RTADJ	Reset threshold adjust	Resistor divider from VS to GND sets reset deassertion voltage (typically 4.65 V); enables custom brown-out detection.
7 FB	Feedback input	Direct connection to output capacitor node; also supplies internal bias-no external resistive divider needed for fixed 5 V version.
9,10 GND	Power ground	Dual low-inductance ground paths; must be connected via wide copper pours to exposed pad for thermal and noise integrity.
11 SWO	Buck switch output	Drain of integrated PMOS; connects directly to inductor and catch diode anode-requires short, low-parasitic routing.
13 VS	Supply input	Main power input (4.75–45 V); requires local 100 nF ceramic + bulk capacitor; internal UVLO triggers at ~4.2 V.
Exposed pad	Thermal & electrical ground	Must be soldered to large GND plane; primary thermal path and EMI return; improves R_thJC to 10 K/W.

Key Features

Feature	Design Value
Integrated PMOS power switch	Eliminates external high-side MOSFET and gate driver, reducing BOM count and layout complexity in space-constrained automotive modules.
PFM mode at light load	Maintains >85% efficiency down to 1 mA output current by disabling internal circuitry between pulses-critical for low-power sleep states.
100% duty cycle capability	Enables dropout operation down to V_OUT + 0.3 V (i.e., 5.3 V input), supporting extended operation during battery brown-out events.
Internal soft-start	Controls output voltage ramp rate to limit inrush current into downstream capacitance-prevents input supply sag and output overshoot.
AEC-Q100 qualified	Validated for automotive Grade 0 (−40°C to +150°C), including HTOL, TC, and ESD testing-ensures reliability in safety-critical ECU applications.

Applications

Dashboard Instrument Cluster

Engine Control Unit (ECU)

Use Scenario: Powering 32-bit microcontroller, TFT display backlight drivers, and analog sensor interfaces in digital dashboards.

IC Role / Device Role / Timing Role: Primary 5 V point-of-load regulator delivering clean, low-noise power with fast transient response to handle burst-mode CPU activity.

Use Value: 2.2 MHz switching minimizes conducted EMI near sensitive display timing circuits; PFM mode extends battery runtime during vehicle-off monitoring.

Use Scenario: Supplying 5 V to crank-angle sensor interface, knock detection ADC, and CAN FD transceiver in gasoline/diesel ECUs.

IC Role / Device Role / Timing Role: High-reliability buck converter handling ISO 7637-2 pulse 5a (load dump) and pulse 4 (cold crank) without derating or external TVS.

Use Value: 45 µA quiescent current meets OEM <100 µA ECU sleep budget; integrated reset generator sequences MCU boot after ignition-on.

Braking System ABS Module

Infotainment Head Unit

Use Scenario: Providing regulated 5 V to wheel-speed sensor conditioners, solenoid drivers, and ASIL-B microcontrollers in ABS/ESC modules.

IC Role / Device Role / Timing Role: Safety-relevant power IC with overtemperature shutdown and cycle-by-cycle current limiting to prevent fault propagation during brake actuation.

Use Value: AEC-Q100 qualification and 150°C T_j rating allow direct mounting on ABS module PCB near hydraulic valves-no remote heatsink required.

Use Scenario: Powering USB-C PD controllers, audio codecs, and touch controller in center-stack infotainment units.

IC Role / Device Role / Timing Role: Compact, low-EMI 5 V supply enabling dense component placement near high-speed digital interfaces (USB, I²S, MIPI).

Use Value: PG-SSOP-14 exposed pad reduces thermal impedance, preventing throttling during sustained video decode; SYNC pin enables EMI spread-spectrum alignment with display pixel clock.

Equivalent & Alternatives

The following parts are listed as comparable options for similar step-down regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM61480QRTWRQ1	4.5–36 V input, 5 V/3.5 A output, 2.1 MHz, requires external feedback resistors	Higher current capacity but larger solution size; lacks integrated reset generator	Select when >500 mA load or design flexibility for adjustable output is required
TPS62903-Q1	3–18 V input, 5 V/1 A output, 2.5 MHz, 15 µA IQ, no SYNC or RTADJ	Lower IQ and higher frequency but narrower input range; not rated for 45 V load dump	Select for low-voltage battery domains (e.g., 12 V only) where ultra-low IQ dominates

Compared with LM61480QRTWRQ1 and TPS62903-Q1, the TLF50241ELXUMA2 uniquely combines 45 V input tolerance, integrated reset, and AEC-Q100 Grade 0 qualification in a compact SSOP package-making it optimal for under-hood and high-transient automotive subsystems requiring functional safety-aware power delivery.

Availability

TLF50241ELXUMA2 is available at Aetrix Electronics and suitable for dashboard instrument clusters, engine control units, and braking system ABS modules requiring stable component supply across automotive production lifecycles.

Supply support for TLF50241ELXUMA2 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 qualification infrastructure.

The TLF50241ELXUMA2 belongs to Infineon's automotive-grade DC/DC regulator product line, engineered specifically for harsh-environment ECU power conversion where input transients, thermal stress, and functional safety coexist.

FAQ

What is the purpose of the RTADJ pin?

The RTADJ pin allows adjustment of the reset threshold voltage using an external resistor divider between VS and GND. When configured, it sets the input voltage level at which the RO pin asserts a reset signal-typically used to delay MCU startup until the 5 V rail stabilizes above a safe margin (e.g., 4.65 V). If unused, RTADJ must be connected to VS to disable the feature.

Can the TLF50241ELXUMA2 operate without the FREQ resistor?

No-the FREQ pin must be connected to GND via a resistor to set the nominal switching frequency; leaving it floating violates absolute maximum ratings and causes undefined oscillator behavior. The recommended resistor value for 2.2 MHz is 124 kΩ (±1%). If synchronization is used, the FREQ resistor should be selected to match the external clock frequency within ±10%.

How does the SYNC pin affect PFM mode operation?

The SYNC pin disables PFM mode: when an external clock is applied, the device operates exclusively in forced PWM mode regardless of load current. This ensures deterministic switching timing for EMI control but increases light-load quiescent current to ~120 µA. PFM resumes automatically when SYNC is left unconnected or held below 0.8 V.

Is the exposed pad electrically connected internally?

Yes-the exposed pad is internally connected to GND and serves as the primary thermal and electrical ground path. It must be soldered to a dedicated PCB GND plane with ≥4 thermal vias (0.3 mm diameter) to achieve specified R_thJA of 47 K/W. Leaving it unconnected degrades thermal performance by >30% and risks latch-up under transient conditions.

TLF50241ELXUMA2 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 14-LSSOP (0.154", 3.90mm Width) Exposed Pad

Packaging:: Bulk

Product Status:: Active

Function:: Step-Down

Output Configuration:: Positive

Topology:: Buck

Output Type:: Fixed

Number of Outputs:: 1

Voltage - Input (Min):: 4.75V

Voltage - Input (Max):: 45V

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

Voltage - Output (Max):: -

Current - Output:: 500mA

Frequency - Switching:: 2.25MHz

Synchronous Rectifier:: No

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SSOP-14-EP

TLF50241ELXUMA2 FAQ

1.How can I place an order for TLF50241ELXUMA2 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLF50241ELXUMA2 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 TLF50241ELXUMA2 reliable?

The price and inventory of TLF50241ELXUMA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLF50241ELXUMA2 is usually 5 days.

3.What payment methods are accepted for TLF50241ELXUMA2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLF50241ELXUMA2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLF50241ELXUMA2?

TLF50241ELXUMA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLF50241ELXUMA2 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 TLF50241ELXUMA2?

For technical support, including TLF50241ELXUMA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLF50241ELXUMA2 requirements.

6.How does Aetrix verify that TLF50241ELXUMA2 is sourced from the original manufacturer or authorized distributors?

All TLF50241ELXUMA2 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 TLF50241ELXUMA2 meets industry standards.

7.What is the process for return or replacement of TLF50241ELXUMA2?

All TLF50241ELXUMA2 units undergo pre-shipment inspection (PSI). If there is an issue with TLF50241ELXUMA2, 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 TLF50241ELXUMA2 part is unused and in its original packaging.

Return procedure for TLF50241ELXUMA2:

1.Submit a request within 90 days.

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

Tech Hub

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…

2026-07-17 Raspberry Pi Alternatives: Chip-Level Comparison, Compatibility and Replacement Guide

Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…

2026-07-13 How to Test Dynamic Load Response in Low-Voltage High-Current Buck Converters

Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…

2026-07-08 Output Capacitor Selection for High-Current ASIC Vcore Rails

Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…

2026-07-07 High-Current ASIC Core Power Supply Design: 12-Phase Buck, PMBus and Dynamic Load Response

Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …

2026-07-06 Voltage Regulator: Types, Circuits, Testing and Selection Guide

Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.

2026-06-30 Amplifiers Explained: Types, Circuits, Gain, Classes and Applications

Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…

2026-06-27 Machine Vision System: Components, Inspection Applications and Integration Guide

Machine vision system guide covering components, inspection workflow, camera and lens selection, FOV, pixel resolution, motion blur, strobe lighting, bandwidth, 2D/3D vision, integration, troubleshooti…

2026-06-23 Electronic Devices and Circuits: Fundamentals, Components and Applications

Electronic devices and circuits guide covering passive components, semiconductors, analog and digital circuits, circuit theory, practical calculations, troubleshooting, datasheet selection, and learnin…