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

Infineon Technologies TLE42794GMXUMA1

Name: TLE42794GMXUMA1
Brand: Infineon Technologies
SKU: TLE42794GMXUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLE42794GMXUMA1

Manufacturer:: Infineon Technologies

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

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

Datasheet:: TLE42794GMXUMA1.pdf

Description:: IC REG LINEAR 5V 150MA DSO14

Quantity:: RFQ Add To RFQ list

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Inventory:4,870

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Product details

Overview

TLE42794GMXUMA1 from Infineon Technologies is a monolithic low-dropout linear voltage regulator delivering a precise 5.0 V ±2% output at up to 150 mA, featuring integrated power-on/undervoltage reset with programmable delay, early warning sense comparator, and reverse polarity protection. It operates across an automotive-grade input range of −42 V to +45 V and supports ambient temperatures from −40 °C to +150 °C.

For engineers reviewing the TLE42794GMXUMA1 datasheet, TLE42794GMXUMA1 pinout, TLE42794GMXUMA1 application, or TLE42794GMXUMA1 equivalent, key selection criteria include its adjustable reset threshold (down to 4.65 V typ), reset output low down to V_Q = 1 V, dropout voltage < 0.5 V at 150 mA, early warning monitoring capability, and AEC-Q100 qualification for under-hood automotive use.

Technical Context

The TLE42794GMXUMA1 implements a saturation-controlled series pass transistor driven by an error amplifier comparing a trimmed reference to a resistive feedback of the regulated output. Its reset function uses a dedicated comparator with externally adjustable threshold via RADJ and programmable delay via capacitor on D pin.

The device integrates independent protection circuits: current limiting for short-circuit robustness, thermal shutdown above 160 °C, and reverse polarity protection enabling operation with input reversed to −42 V. The SI-to-SO early warning path allows monitoring of arbitrary voltages (e.g., battery or sensor supply) with open-collector assertion.

Key Specifications

Parameter	Value and Actual Design Meaning
Output voltage	5.0 V ±2% - stable MCU/Sensor supply rail tolerant of load transients and temperature drift.
Max output current	150 mA - sufficient for powering microcontrollers, CAN transceivers, and small logic loads in body control modules.
Input voltage range	−42 V to +45 V - enables direct connection to automotive battery with load dump and reverse-battery fault immunity.
Dropout voltage	< 0.5 V @ 150 mA - maintains regulation during cold-cranking (battery dip to 3.5 V) when supplying 5 V to downstream ICs.
Reset threshold	Typ. 4.65 V, adjustable via external divider on RADJ - allows system-specific brown-out detection before MCU lockup.
Early warning input	SI pin monitors external voltage; SO asserts low on undervoltage - enables predictive diagnostics for auxiliary supplies.
Operating temperature	−40 °C to +150 °C - qualified for engine compartment placement per AEC-Q100 Grade 0.

Pinout & Package

Package: PG-DSO-14 (14-pin exposed-pad SOIC), RoHS-compliant, thermally enhanced for automotive under-hood dissipation.

Pin/Terminal	Circuit Role	Design Meaning
1 RADJ	Reset threshold adjust	Connect external resistor divider to set custom reset voltage; tie to GND for internal 4.65 V default.
2 D	Reset delay timing	Connect ceramic capacitor to GND to program power-on reset delay (e.g., 100 nF ≈ 100 ms); leave open to disable delay.
3,4,5,6 GND	Ground	All four pins must be connected to PCB ground plane and thermal pad for EMI suppression and thermal conduction.
7 RO	Reset output	Open-collector output; requires external pull-up to V_Q; asserts low during reset condition (V_Q < threshold).
8 SO	Sense output	Open-collector early warning output; asserts low when SI voltage falls below configured threshold.
9 Q	Regulated output	5 V output; requires local ceramic capacitor (≥1 µF, ≤100 mΩ ESR) for loop stability and transient response.
10,11,12 GND	Ground	Additional ground connections for noise reduction and thermal relief; connect directly to exposed pad and ground plane.
13 I	Input compensation	Input pin; decoupling capacitor (≥10 µF, low-ESR) required near IC to suppress line impedance effects.
14 SI	Sense input	Monitor any DC voltage (e.g., battery, sensor supply); connect to Q if unused to disable early warning.

Key Features

Feature	Design Value
Adjustable reset threshold	Configurable from 4.65 V down to 1 V using external resistor divider on RADJ pin - enables system-specific brown-out detection.
Programmable reset delay	Capacitor-based timing on D pin sets delay from milliseconds to seconds - synchronizes reset release with peripheral power-up sequencing.
Early warning monitoring	Dedicated SI/SO path provides independent undervoltage alert before main regulator fails - supports predictive fault logging in ECUs.
Reverse polarity protection	Withstands −42 V input without damage - eliminates need for external series diode in battery-connected applications.
AEC-Q100 qualified	Qualified to Grade 0 (−40 °C to +150 °C ambient) with full reliability testing - certified for safety-critical automotive subsystems.

Applications

Body Control Module (BCM)

Engine Control Unit (ECU) Power Sequencing

Use Scenario: Regulating 5 V supply for microcontroller, LIN transceivers, and sensor interfaces in door modules and lighting controllers.

IC Role / Device Role / Timing Role: Primary LDO providing clean, fault-tolerant 5 V rail with integrated reset signaling for safe MCU boot and brown-out recovery.

Use Value: Eliminates need for discrete reset IC and external protection diodes, reducing BOM count while meeting ISO 16750-2 pulse test requirements.

Use Scenario: Powering auxiliary logic and analog circuitry in engine management systems where cold-cranking and load-dump events occur.

IC Role / Device Role / Timing Role: High-reliability 5 V regulator with programmable reset delay ensuring MCU starts only after critical peripherals stabilize.

Use Value: Dropout < 0.5 V sustains regulation during 3.5 V cranking dips; reset delay prevents spurious resets during transient battery recovery.

Advanced Driver Assistance Systems (ADAS) Camera Power

Automotive Gateway Module

Use Scenario: Supplying image signal processor and serializer in rear-view or surround-view camera modules mounted near exhaust or engine bay.

IC Role / Device Role / Timing Role: Automotive-grade LDO with early warning (SI/SO) monitoring camera sensor supply voltage for predictive thermal/fault alerts.

Use Value: SI pin monitors 12 V camera input; SO triggers diagnostic log before V_Q drops - enables fail-safe image blanking prior to complete loss.

Use Scenario: Providing isolated 5 V rails for CAN, LIN, and Ethernet PHYs in vehicle communication gateways requiring multiple independent resets.

IC Role / Device Role / Timing Role: Dual-function regulator with separate RO (system reset) and SO (peripheral monitor) outputs supporting hierarchical power management.

Use Value: Independent SO output enables selective reset of CAN transceivers while holding MCU in reset - avoids bus arbitration conflicts during recovery.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLE42694G	Integrated 10 kΩ pull-up resistors on RO and SO pins; otherwise identical electrical specs and pinout.	Reduces external component count in designs where pull-ups are mandatory and board space is constrained.	Select TLE42694G when eliminating two external resistors simplifies layout and improves production yield without altering timing behavior.
TLV73350PDBVR	Lower quiescent current (45 µA vs. 120 µA), but no reset/sense functions; max input 5.5 V; not AEC-Q100 qualified.	Limited to non-automotive, low-power consumer applications with stable 3.3–5 V inputs and no fault monitoring needs.	Choose TLV73350PDBVR only for cost-sensitive, non-automotive designs lacking reset, early warning, or high-voltage tolerance.

Compared with TLE42694G, TLE42794GMXUMA1 trades integrated pull-ups for design flexibility in reset/sense termination; versus TLV73350PDBVR, it delivers automotive-grade fault resilience and multi-function integration at higher quiescent current and cost.

Availability

TLE42794GMXUMA1 is available at Aetrix Electronics and suitable for body control modules, engine control units, ADAS camera power supplies, and automotive gateway modules requiring stable component supply with full automotive qualification and long-term lifecycle support.

Supply support for TLE42794GMXUMA1 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 leadership in high-reliability analog and mixed-signal solutions.

The OPTIREG™ Linear product line delivers automotive-qualified linear regulators engineered for harsh environments - emphasizing fault tolerance, wide input range, and integrated system-level functions like reset and monitoring.

FAQ

What is the minimum input voltage required for regulation?

The TLE42794GMXUMA1 regulates down to V_IN = V_OUT + V_DO, where dropout voltage is < 0.5 V at 150 mA. With nominal 5.0 V output, regulation is maintained above ~5.5 V input under full load. At light loads, regulation begins as low as 4.7 V due to lower dropout.

Can the early warning function monitor voltages other than the input supply?

Yes - the SI pin accepts any DC voltage within −0.3 V to +45 V. It is commonly used to monitor battery voltage, sensor supply rails, or auxiliary 12 V lines. The SO output asserts low when SI falls below the threshold set by the RADJ divider, independent of the main regulator's output state.

Is an external pull-up resistor required on the RO pin?

Yes - RO is an open-collector output and requires an external pull-up resistor to V_Q (5 V). Infineon specifies 4.7 kΩ as typical; values between 2.2 kΩ and 10 kΩ maintain valid logic levels while balancing speed and current draw. Omitting the pull-up renders RO nonfunctional.

How does the device behave during reverse polarity connection?

When input is reversed to −42 V, internal protection circuitry blocks conduction without damage. Output remains off, and no current flows through RO/SO. The device resumes normal operation immediately upon return to correct polarity - no latch-up or recovery delay occurs.

TLE42794GMXUMA1 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:: Not For New Designs

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:: 150mA

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

TLE42794GMXUMA1 FAQ

1.How can I place an order for TLE42794GMXUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLE42794GMXUMA1 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 TLE42794GMXUMA1 reliable?

The price and inventory of TLE42794GMXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE42794GMXUMA1 is usually 5 days.

3.What payment methods are accepted for TLE42794GMXUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE42794GMXUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLE42794GMXUMA1?

TLE42794GMXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLE42794GMXUMA1 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 TLE42794GMXUMA1?

For technical support, including TLE42794GMXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE42794GMXUMA1 requirements.

6.How does Aetrix verify that TLE42794GMXUMA1 is sourced from the original manufacturer or authorized distributors?

All TLE42794GMXUMA1 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 TLE42794GMXUMA1 meets industry standards.

7.What is the process for return or replacement of TLE42794GMXUMA1?

All TLE42794GMXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE42794GMXUMA1, 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 TLE42794GMXUMA1 part is unused and in its original packaging.

Return procedure for TLE42794GMXUMA1:

1.Submit a request within 90 days.

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

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