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

Infineon Technologies TLE42744EV50XUMA1

Name: TLE42744EV50XUMA1
Brand: Infineon Technologies
SKU: TLE42744EV50XUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLE42744EV50XUMA1

Manufacturer:: Infineon Technologies

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

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

Datasheet:: TLE42744EV50XUMA1.pdf

Description:: IC REG LINEAR 5V 400MA SSOP-14-2

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Product details

Overview

TLE42744EV50XUMA1 from Infineon Technologies is a monolithic low-dropout linear voltage regulator delivering 5 V ±2% at up to 400 mA output current, with input voltage range 5.5–40 V and dropout voltage as low as 200 mV at 400 mA. It features reverse polarity protection, overtemperature shutdown, and output current limitation, and is qualified for automotive use in engine control units and body electronics.

For engineers reviewing the TLE42744EV50XUMA1 datasheet, TLE42744EV50XUMA1 pinout, TLE42744EV50XUMA1 application, or TLE42744EV50XUMA1 equivalent, key selection criteria include its PG-SSOP-14 exposed pad thermal performance (R_thJA = 43 K/W on 2s2p board), quiescent current < 100 µA, AEC-Q100 qualification, and integrated protection for permanent battery-connected systems.

Technical Context

The TLE42744EV50XUMA1 implements a bandgap reference-based control amplifier with saturation control and integrated protection circuitry. Its architecture includes internal temperature sensing, current-limiting feedback, and reverse-polarity blocking via integrated MOSFET structure - all operating across -40 °C to +150 °C junction temperature.

Designed specifically for automotive power supply domains, it regulates unfiltered battery rail (VBAT) directly without external pre-regulation. The exposed pad package enables direct thermal coupling to PCB ground plane, supporting stable operation under transient load steps and ambient thermal cycling typical in under-hood environments.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	5 V ±2% - ensures stable MCU core/peripheral supply within automotive voltage tolerance bands
Max Output Current	400 mA - supports multiple downstream ICs (e.g., CAN transceivers, sensors, logic) without external boost
Dropout Voltage	200 mV @ 400 mA - enables regulation down to 5.7 V input, critical during cold-crank (6.0 V min)
Quiescent Current	< 100 µA - minimizes standby drain on always-on battery circuits (e.g., alarm, CAN wake-up)
Input Voltage Range	5.5–40 V - covers full automotive battery range including load dump (40 V transient)
Junction Temp Range	-40 °C to +150 °C - validated for under-hood ECU placement per AEC-Q100 Grade 0
Thermal Resistance R_thJA	43 K/W (2s2p board) - enables 2.5 W dissipation at ΔT = 107.5 °C above ambient

Pinout & Package

Package: PG-SSOP-14 exposed pad (RoHS-compliant, AEC-Q100 qualified). Exposed pad must be soldered to PCB ground plane for thermal and electrical integrity.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 5, 6, 7	n.c.	No internal connection - may be left floating or tied to GND for mechanical stability or EMI reduction
4	GND	Main ground reference and return path for regulator current; connects internally to exposed pad
8, 10, 11, 12, 14	n.c.	No internal connection - same handling as pins 1–3, 5–7
9	Q (Output)	Regulated 5 V output; requires local 22 µF ceramic capacitor with ESR ≤ 3 Ω at 10 kHz
13	I (Input)	Unregulated input (5.5–40 V); requires direct ceramic decoupling to GND at IC pin
Exposed Pad	GND / Thermal Slug	Internally connected to GND; mandatory solder connection to PCB ground pour for thermal management and noise immunity

Key Features

Feature	Design Value
Reverse Polarity Protection	Withstands -42 V input without damage - eliminates need for external series diode in battery-reverse scenarios
Overtemperature Shutdown	Activates at T_j ≥ 170 °C (hysteresis ~15 °C) - prevents thermal runaway during sustained overload or poor heatsinking
Output Current Limitation	Soft-limited to ~500 mA peak - maintains regulation during short-circuit while avoiding destructive latch-up
Low Quiescent Current	< 100 µA at no load - extends battery life in always-on modules (e.g., telematics, gateway wake logic)

Applications

Engine Control Unit (ECU) Power Supply

Body Control Module (BCM) Sub-Regulation

Use Scenario: Supplies 5 V to microcontroller, CAN transceiver, and analog sensor interface in gasoline/diesel engine ECUs mounted near exhaust manifolds.

IC Role / Device Role / Timing Role: Primary post-buck LDO providing clean, protected 5 V rail from noisy 12 V battery input.

Use Value: Withstands 150 °C ambient and 40 V load dump transients while maintaining ±2% output accuracy and sub-100 µA quiescent draw.

Use Scenario: Powers door module MCUs and LIN transceivers in vehicle body electronics where space and thermal constraints limit heatsink area.

IC Role / Device Role / Timing Role: Compact, thermally efficient LDO replacing TO252-based regulators in SSOP footprint-constrained PCB layouts.

Use Value: PG-SSOP-14 exposed pad delivers 43 K/W R_thJA, enabling 400 mA continuous output without external heatsink on standard FR4.

Automotive Telematics Gateway

Advanced Driver Assistance Systems (ADAS) Camera Power

Use Scenario: Provides always-on 5 V supply to GPS/GSM baseband processor and secure element in telematics control units.

IC Role / Device Role / Timing Role: Standby-mode LDO ensuring reliable wake-up capability from vehicle sleep states (KL30/KL15).

Use Value: Ultra-low 100 µA I_Q prevents excessive battery drain during multi-week parking cycles.

Use Scenario: Powers image signal processor and serializer in rear-view or surround-view camera modules mounted in hot trunk/cargo areas.

IC Role / Device Role / Timing Role: High-temp-stable LDO delivering ripple-free 5 V despite wide ambient swings (-40 °C to +105 °C case).

Use Value: Guaranteed operation up to 150 °C junction temperature and ±2% output accuracy across full temp range ensures consistent ADC reference and timing stability.

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-dropout linear regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLE42744DV50	Same electrical specs but PG-TO252-3 package; R_thJA = 27 K/W (2s2p), higher thermal mass, larger footprint	Better suited for high-power, non-space-constrained boards with dedicated heatsinking	Select when thermal margin > 2.5 W is required and SSOP layout density is not critical
TLV73350PDBVR	500 mA rated, 5 V ±1%, but only AEC-Q200 rated (not Q100); R_thJA = 120 K/W (SOT-23); no reverse polarity protection	Limited to cabin/non-critical applications; lacks automotive-grade fault protection	Use only in cost-sensitive, non-safety-critical interior modules with controlled thermal environment

Compared with TLE42744DV50, the TLE42744EV50XUMA1 trades thermal performance (43 vs. 27 K/W) for 45% smaller PCB area and improved manufacturability in fine-pitch assembly; versus TLV73350PDBVR, it adds AEC-Q100 qualification, reverse polarity hardening, and 1.5× higher thermal robustness - essential for under-hood deployment.

Availability

TLE42744EV50XUMA1 is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, and telematics gateways requiring stable component supply, AEC-Q100 compliance, and extended temperature operation.

Supply support for TLE42744EV50XUMA1 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 security solutions, with global manufacturing and automotive qualification infrastructure.

The TLE42744 product line delivers AEC-Q100-qualified linear regulators optimized for harsh automotive environments - designed to replace discrete protection + LDO solutions in ECU, BCM, and ADAS subsystems.

FAQ

What is the minimum input voltage required for regulation at full 400 mA load?

The TLE42744EV50XUMA1 requires a minimum input voltage of 5.7 V to maintain 5 V output at 400 mA, based on its maximum dropout voltage of 200 mV. Below this, output voltage drops linearly with input; operation below 5.5 V is outside functional range and may trigger undervoltage lockout behavior.

Can the exposed pad be left unconnected during PCB assembly?

No - the exposed pad is electrically connected to GND and serves as the primary thermal path. Leaving it unconnected causes junction temperature to rise by >60 °C at 400 mA, triggering premature overtemperature shutdown and risking long-term reliability failure. It must be fully soldered to a minimum 100 mm² GND copper area.

Does this device support parallel operation for higher current capability?

No - the TLE42744EV50XUMA1 lacks current-sharing control circuitry or matching output impedance. Parallel connection risks current imbalance, thermal runaway, and undefined startup sequencing. For >400 mA, select a higher-current regulator such as TLE7272 or use a switching pre-regulator stage.

Is external output capacitance mandatory, and what are the stability requirements?

Yes - a minimum 22 µF ceramic capacitor with ESR ≤ 3 Ω at 10 kHz is mandatory at the Q pin for loop stability. Lower ESR or higher capacitance improves transient response; aluminum or tantalum capacitors are not recommended due to ESR drift and aging effects that risk oscillation.

TLE42744EV50XUMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: OPTIREG™

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 40V

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

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.5V @ 250mA

Current - Output:: 400mA

Current - Quiescent (Iq):: 220 µA

Current - Supply (Max):: 30 mA

PSRR:: 60dB (100Hz)

Control Features:: -

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-SSOP-14-2

TLE42744EV50XUMA1 FAQ

1.How can I place an order for TLE42744EV50XUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLE42744EV50XUMA1 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 TLE42744EV50XUMA1 reliable?

The price and inventory of TLE42744EV50XUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE42744EV50XUMA1 is usually 5 days.

3.What payment methods are accepted for TLE42744EV50XUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE42744EV50XUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLE42744EV50XUMA1?

TLE42744EV50XUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLE42744EV50XUMA1 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 TLE42744EV50XUMA1?

For technical support, including TLE42744EV50XUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE42744EV50XUMA1 requirements.

6.How does Aetrix verify that TLE42744EV50XUMA1 is sourced from the original manufacturer or authorized distributors?

All TLE42744EV50XUMA1 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 TLE42744EV50XUMA1 meets industry standards.

7.What is the process for return or replacement of TLE42744EV50XUMA1?

All TLE42744EV50XUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE42744EV50XUMA1, 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 TLE42744EV50XUMA1 part is unused and in its original packaging.

Return procedure for TLE42744EV50XUMA1:

1.Submit a request within 90 days.

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

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