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 - Linear, Low Drop Out (LDO) Regulators

Infineon Technologies TLE42794GMXUMA2

Name: TLE42794GMXUMA2
Brand: Infineon Technologies
SKU: TLE42794GMXUMA2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: TLE42794GMXUMA2

Manufacturer:: Infineon Technologies

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

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: TLE42794GMXUMA2.pdf

Description:: IC REG LINEAR 5V 100MA DSO14

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,095

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

Product details

Overview

TLE42794GMXUMA2 from Infineon is a monolithic low-dropout linear voltage regulator delivering a fixed 5.0 V ±2% output with up to 150 mA load current, integrated power-on/undervoltage reset with programmable delay, early warning sense comparator, and reverse polarity protection-designed for automotive body control modules requiring stable 5 V supply under harsh electrical conditions.

For engineers reviewing the TLE42794GMXUMA2 datasheet, TLE42794GMXUMA2 pinout, TLE42794GMXUMA2 application, or TLE42794GMXUMA2 equivalent, key selection criteria include its −42 V to +45 V input range, reset threshold adjustability via external divider, 1 V minimum reset assertion voltage, thermal shutdown behavior, and PG-DSO-14 package compatibility with automotive PCB layouts.

Technical Context

The TLE42794GMXUMA2 implements a precision bandgap reference and error amplifier driving a series pass transistor with saturation control to maintain regulation across wide input voltage swings and load transients. Its internal architecture integrates dual comparators-one for reset generation (V_Q,rt = 4.65 V typ., adjustable) and one for early warning (monitoring any external voltage).

Reset timing is set by an external capacitor on the D pin, enabling programmable delay from 0.1 ms to >1 s; the open-collector RO and SO outputs require external pull-up resistors to V_Q, supporting flexible interface logic levels in 5 V or mixed-voltage systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	5.0 V ±2% - ensures stable MCU/peripheral supply within AEC-Q100-compliant tolerance bands.
Max Output Current	150 mA - sufficient to power microcontrollers, CAN transceivers, and sensor interfaces in distributed ECUs.
Input Voltage Range	−42 V to +45 V - supports load dump, reverse battery, and cold-crank conditions per ISO 7637-2/16750-2.
Dropout Voltage	Typ. 300 mV at 150 mA - enables operation down to V_IN = 5.3 V while maintaining regulation.
Reset Threshold	Adjustable from 4.0 V to 4.75 V via RADJ pin - allows precise system-level brown-out detection.
Operating Temp	−40 °C to +150 °C - qualified for under-hood and transmission control unit environments.
Protection Features	Reverse polarity, overtemperature, short-circuit, and overload - eliminates need for external protection circuitry.

Pinout & Package

Package: PG-DSO-14 (14-pin plastic dual small outline, exposed pad for thermal dissipation), RoHS-compliant, AEC-Q100 qualified.

Pin/Terminal	Circuit Role	Design Meaning
1 RADJ	Reset threshold adjust input	Connects to external resistor divider to lower internal 4.65 V reset point; tie to GND for default threshold.
2 D	Reset delay timing capacitor node	Accepts ceramic capacitor to GND (0.1–100 nF) to set power-on reset delay time; open if unused.
3, 4, 5, 6 GND	Ground terminals	All four pins must be connected to PCB ground plane and heatsink area for thermal and EMI performance.
7 RO	Open-collector reset output	Active-low signal asserted when V_Q drops below threshold; requires external pull-up to V_Q.
8 SO	Open-collector sense output	Early warning flag for monitored voltage (e.g., battery or LIN bus); requires external pull-up to V_Q.
9 Q	Regulated 5 V output	Delivers regulated 5 V; requires local 2.2 µF ceramic capacitor with ≤50 mΩ ESR for loop stability.
10, 11, 12 GND	Additional ground terminals	Part of thermal pad connection network; must be soldered to large copper area for 150 °C operation.
13 I	Input compensation node	Connects to input rail via local 100 nF ceramic capacitor to suppress line transients and improve PSRR.
14 SI	Sense input	Monitors external voltage (e.g., battery or LIN supply); connect to Q if unused.

Key Features

Feature	Design Value
Programmable reset delay	Configurable via single external capacitor (D pin), enabling system-specific power sequencing without firmware dependency.
Adjustable reset threshold	External resistor divider on RADJ pin allows fine-tuning of brown-out detection level to match host MCU requirements.
Early warning sense comparator	Dedicated SI/SO path monitors auxiliary rails (e.g., 12 V battery) independently of main output, enabling predictive fault handling.
Reverse polarity protection	Internal circuitry blocks conduction during −42 V reverse battery events, eliminating need for external series diode or MOSFET.
Thermal shutdown with hysteresis	Shuts down at 175 °C and re-enables at ~155 °C, preventing thermal runaway in sealed enclosures.

Applications

Body Control Module (BCM)

Engine Control Unit (ECU) Subsystem

Use Scenario: Powers microcontroller, LIN transceivers, and door lock actuators in vehicle body electronics.

IC Role / Device Role / Timing Role: Primary 5 V LDO supplying safety-critical logic with reset supervision and early battery monitoring.

Use Value: Enables single-chip power management with integrated reset and warning functions, reducing BOM count and PCB area.

Use Scenario: Supplies auxiliary 5 V rail to crank-angle sensor interface and knock control circuitry.

IC Role / Device Role / Timing Role: Secondary regulated supply with independent reset timing and reverse-battery resilience.

Use Value: Maintains functionality during cold-crank (V_BAT < 6 V) and load-dump (V_BAT > 40 V) events per ISO 16750-2.

Transmission Control Unit (TCU)

Advanced Driver Assistance Systems (ADAS) Camera Power

Use Scenario: Provides clean 5 V to solenoid drivers and gear position sensors in high-temperature transmission housings.

IC Role / Device Role / Timing Role: High-temp LDO with thermal shutdown hysteresis and wide-input operation.

Use Value: Sustains regulation up to 150 °C ambient and survives 175 °C junction temperature shutdown cycles.

Use Scenario: Powers image signal processor and serializer in rear-view camera modules mounted near exhaust systems.

IC Role / Device Role / Timing Role: Low-noise 5 V source with early warning for battery sag before camera dropout.

Use Value: SO output triggers host SoC alert before V_Q collapse, allowing graceful image buffer flush and error logging.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLE42794G	PG-DSO-8 package, identical electrical specs but fewer ground pins and no exposed thermal pad.	Limited thermal dissipation (R_thJA = 70 K/W vs. 45 K/W for GM), unsuitable for >100 mA continuous in 125 °C ambient.	Select when board space is constrained and thermal load is light; verify junction temperature rise with actual layout.
TLE42694GM	Includes integrated 10 kΩ pull-up resistors on RO and SO pins; otherwise identical functional block.	Eliminates two external resistors but fixes pull-up voltage to V_Q; not configurable for 3.3 V logic interfacing.	Choose when simplifying BOM and reducing component count outweighs flexibility in reset/sense output voltage translation.

Compared with TLE42794G and TLE42694GM, the TLE42794GMXUMA2 offers superior thermal performance via its 4-ground-pin PG-DSO-14 layout and retains full external configurability of reset and sense functions-critical for complex multi-rail automotive subsystems.

Availability

TLE42794GMXUMA2 is available at Aetrix Electronics and suitable for body control modules, engine control units, transmission control units, and ADAS camera power supplies requiring stable component supply across extended automotive temperature and voltage stress conditions.

Supply support for TLE42794GMXUMA2 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 ICs, and security solutions, with global manufacturing and qualification infrastructure aligned to automotive quality standards.

The OPTIREG™ Linear product line delivers AEC-Q100-qualified voltage regulators optimized for automotive subsystems demanding high reliability, wide input range, and integrated supervision features-targeting ECU, BCM, and ADAS power domains.

FAQ

What is the minimum input voltage required for regulation at full 150 mA load?

The TLE42794GMXUMA2 maintains 5.0 V regulation down to an input voltage of 5.3 V at 150 mA, based on its typical 300 mV dropout voltage. Below this, output voltage follows input minus dropout until the undervoltage reset activates at ~4.65 V (adjustable). Operation below 5.3 V is possible only in dropout mode with reduced load capability.

Can the SO (sense output) be used to monitor voltages other than the input supply?

Yes-the SI pin accepts any DC voltage between 0.5 V and 45 V, enabling monitoring of battery, LIN bus, or auxiliary 12 V rails. The SO output asserts low when the sensed voltage falls below a user-defined threshold set by the RADJ divider, independent of the 5 V output regulation status.

Is an external capacitor required on the I pin, and what value is recommended?

Yes-a 100 nF ceramic capacitor must be placed between the I pin and GND, located as close as possible to the IC terminals. This capacitor compensates for line impedance and improves transient response and PSRR above 10 kHz; omitting it may cause instability during fast input transients per ISO 7637-2 Pulse 5a.

How does the reset function behave during reverse polarity conditions?

Under reverse polarity (−42 V applied), the TLE42794GMXUMA2 blocks current flow and disables all internal circuits-including the reset generator-so RO remains high-impedance and inactive. Reset functionality resumes only after polarity correction and successful power-on reset sequence with valid input voltage above the start-up threshold (~4.5 V).

TLE42794GMXUMA2 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: OPTIREG™

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 45V

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

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.5V @ 100mA

Current - Output:: 100mA

Current - Quiescent (Iq):: 280 µA

Current - Supply (Max):: 8 mA

PSRR:: 70dB (100Hz)

Control Features:: Reset

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

Operating Temperature:: -40°C ~ 150°C

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: PG-DSO-14

TLE42794GMXUMA2 FAQ

1.How can I place an order for TLE42794GMXUMA2 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLE42794GMXUMA2 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 TLE42794GMXUMA2 reliable?

The price and inventory of TLE42794GMXUMA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE42794GMXUMA2 is usually 5 days.

3.What payment methods are accepted for TLE42794GMXUMA2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE42794GMXUMA2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLE42794GMXUMA2?

TLE42794GMXUMA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLE42794GMXUMA2 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 TLE42794GMXUMA2?

For technical support, including TLE42794GMXUMA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE42794GMXUMA2 requirements.

6.How does Aetrix verify that TLE42794GMXUMA2 is sourced from the original manufacturer or authorized distributors?

All TLE42794GMXUMA2 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 TLE42794GMXUMA2 meets industry standards.

7.What is the process for return or replacement of TLE42794GMXUMA2?

All TLE42794GMXUMA2 units undergo pre-shipment inspection (PSI). If there is an issue with TLE42794GMXUMA2, 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 TLE42794GMXUMA2 part is unused and in its original packaging.

Return procedure for TLE42794GMXUMA2:

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…