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

Infineon Technologies TLE72742GATMA1

Name: TLE72742GATMA1
Brand: Infineon Technologies
SKU: TLE72742GATMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLE72742GATMA1

Manufacturer:: Infineon Technologies

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

Package:: TO-263-6, D2PAK (5 Leads + Tab), TO-263BA

Datasheet:: TLE72742GATMA1.pdf

Description:: IC REG LINEAR 5V 300MA TO263-3

Quantity:: RFQ Add To RFQ list

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Inventory:2,196

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Product details

Overview

TLE72742GATMA1 from Infineon Technologies is an AEC-Q100 qualified monolithic 5-V low-dropout linear voltage regulator for automotive power supply rails, delivering up to 300 mA output current with ±2% output voltage accuracy (4.9–5.1 V), 250–500 mV dropout at 200 mA, and ultra-low quiescent current of 20 µA typical - enabling always-on battery-connected systems such as body control modules and sensor interfaces.

For engineers reviewing the TLE72742GATMA1 datasheet, TLE72742GATMA1 pinout, TLE72742GATMA1 application, or TLE72742GATMA1 equivalent, key selection criteria include its PG-TO263-3 package thermal performance (R_thJA = 27 K/W with heatsink), reverse-current sink protection limiting Q-pin voltage to ≤5.5 V, and compatibility with ceramic output capacitors as low as 470 nF and ESR ≤10 Ω.

Technical Context

The TLE72742GATMA1 employs a charge pump-based internal biasing architecture to achieve ultra-low quiescent current while maintaining regulation across 5.5–42 V input range. Its overtemperature shutdown and output current limitation (301 mA trip, 800 mA short-circuit capability) are implemented as hard-wired protection circuits, not software-configurable features.

It integrates a bandgap reference and output sink circuitry that clamps the Q pin to ≤5.5 V during reverse current events - a hardware-level safeguard distinct from external diode solutions. The device operates across -40 °C to +150 °C junction temperature, validated per AEC-Q100 stress test conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	5.0 V ±2% (4.9–5.1 V); stable across load (0.1–300 mA) and line (6–40 V) variations
Dropout Voltage	250–500 mV at 200 mA; enables regulation from 5.5 V input in low-voltage battery scenarios
Quiescent Current	20 µA typical; supports permanent V_BAT connection without excessive standby drain
Output Current Limit	301 mA (regulated drop), 800 mA (short-circuit); protects against sustained overload
Thermal Resistance	R_thJA = 27 K/W (with heatsink); R_thJC = 6 K/W (to exposed pad)
Operating Temp	-40 °C to +150 °C junction; qualified for under-hood automotive environments
Capacitor Support	Min 470 nF ceramic output cap; max ESR 10 Ω at 10 kHz - enables compact, low-ESR filtering

Pinout & Package

Package: PG-TO263-3 (D²PAK) with exposed heat slug internally connected to GND; requires PCB copper area ≥600 mm² for optimal thermal performance (R_thJA = 38 K/W).

Pin/Terminal	Circuit Role	Design Meaning
1 (I)	Input	High-side input terminal; must be decoupled with ceramic capacitor directly at IC pin
2 (GND)	Ground	Reference node and internal heat slug connection; requires low-impedance PCB ground plane
3 (Q)	Output	Regulated 5-V output; includes integrated sink circuitry limiting voltage to ≤5.5 V during reverse current
Heat Slug	Thermal & Electrical Node	Internally tied to GND; must be soldered to ≥300–600 mm² copper pour for thermal management

Key Features

Feature	Design Value
AEC-Q100 Qualified	Validated for automotive use per Grade 0 (-40 °C to +150 °C) reliability stress tests
Reverse-Current Sink Protection	Hardware clamp holds Q-pin ≤5.5 V during backfeed, eliminating need for external blocking diode
Ceramic Capacitor Compatible	Stable with 470 nF–10 µF ceramic caps (ESR ≤10 Ω), reducing BOM count vs. tantalum/aluminum
Overtemperature Shutdown	Automatic thermal foldback activates at T_j ≥150 °C; recovers after cooldown without latch
Low-Noise Trade-off Mitigation	Charge pump operation causes mV-range output noise - acceptable for non-precision analog rails

Applications

Body Control Module (BCM)

Engine Control Unit (ECU) Sensor Supply

Use Scenario: Powering microcontroller peripherals and LIN transceivers in always-on vehicle domains.

IC Role / Device Role / Timing Role: Primary 5-V LDO supplying logic rails and communication interfaces.

Use Value: 20 µA quiescent current prevents excessive battery drain during extended parking periods.

Use Scenario: Providing stable 5-V bias to pressure, temperature, and position sensors near engine block.

IC Role / Device Role / Timing Role: High-reliability post-regulator downstream of main DC/DC converter.

Use Value: 150 °C junction rating and integrated overtemperature shutdown ensure operation in high-ambient under-hood zones.

Advanced Driver Assistance Systems (ADAS) Camera Module

Electric Power Steering (EPS) Control Board

Use Scenario: Powering image signal processor (ISP) I/O and lens actuator drivers in rear-view cameras.

IC Role / Device Role / Timing Role: Local point-of-load regulator isolating noise-sensitive imaging circuitry.

Use Value: Ceramic capacitor compatibility (≥470 nF) enables compact layout with minimal board space and no electrolytic aging concerns.

Use Scenario: Supplying gate drivers and MCU cores in torque-assist motor control subsystems.

IC Role / Device Role / Timing Role: Fault-tolerant 5-V rail with current limiting and thermal protection for safety-critical functions.

Use Value: 301 mA current limit and fast overtemperature response meet ASIL-B functional safety requirements for EPS auxiliary supplies.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 5-V automotive LDO applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV73350PDBVR	Lower max input (6.5 V), lower current (300 mA), no AEC-Q100 qualification, R_thJA = 120 K/W (SOT-23)	Non-automotive industrial or consumer use only; unsuitable for 12/24-V battery systems	Select only for cost-sensitive, non-automotive designs with <6.5 V input and ambient <85 °C
TPS7B6750QPWPRQ1	AEC-Q100 Grade 1, 400 mA output, 300 mV dropout, R_thJA = 40 K/W (HTSSOP-16), higher quiescent current (45 µA)	Supports higher load currents and wider input range (4.5–40 V), but larger footprint and higher standby draw	Prefer when >300 mA load or tighter line regulation (<10 mV) is required, accepting higher I_q

Compared with TLV73350PDBVR and TPS7B6750QPWPRQ1, the TLE72742GATMA1 uniquely balances ultra-low I_q, AEC-Q100 Grade 0 qualification, and D²PAK thermal performance - making it optimal for space-constrained, always-on automotive modules where battery life and under-hood reliability are primary constraints.

Availability

TLE72742GATMA1 is available at Aetrix Electronics and suitable for body control modules, engine sensor interfaces, ADAS camera power supplies, and electric power steering control boards requiring stable component supply across long automotive production lifecycles.

Supply support for TLE72742GATMA1 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 aligned to ISO/TS 16949 and AEC standards.

The TLE7274-2 product line delivers robust, low-quiescent-current LDO regulators specifically engineered for automotive battery-connected systems - prioritizing reliability, thermal resilience, and fault protection over ultra-low-noise performance.

FAQ

What is the maximum allowable input voltage for continuous operation?

The TLE72742GATMA1 supports continuous input voltages from 5.5 V to 42 V. Absolute maximum rating is 45 V for ≤10 seconds; operation above 42 V risks exceeding safe operating area limits and triggering overvoltage protection or thermal shutdown.

Can this regulator operate with a 1-µF ceramic output capacitor?

Yes - the device is stable with ceramic output capacitors ranging from 470 nF to 10 µF, provided ESR remains ≤10 Ω at 10 kHz. A 1-µF X7R capacitor meets both criteria and is commonly used in compact automotive layouts.

Is the exposed pad on the PG-TO263-3 package electrically connected?

Yes - the heat slug is internally connected to GND and must be soldered to a dedicated PCB ground plane. It serves dual roles: thermal conduction path (R_thJC = 6 K/W) and low-inductance return path for high-frequency switching currents.

Does the output sink function protect against battery reversal?

No - the integrated sink circuitry only clamps reverse current from downstream loads (e.g., backfeed from capacitors or powered peripherals). It does not protect against reversed battery polarity; external reverse-polarity protection (e.g., MOSFET or diode) remains required.

TLE72742GATMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: OPTIREG™

Package/Case:: TO-263-6, D2PAK (5 Leads + Tab), TO-263BA

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 42V

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

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.5V @ 200mA

Current - Output:: 300mA

Current - Quiescent (Iq):: 30 µA

Current - Supply (Max):: 40 µA

PSRR:: 60dB (100Hz)

Control Features:: -

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

Operating Temperature:: -40°C ~ 150°C

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: PG-TO263-5-1

TLE72742GATMA1 FAQ

1.How can I place an order for TLE72742GATMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLE72742GATMA1 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 TLE72742GATMA1 reliable?

The price and inventory of TLE72742GATMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE72742GATMA1 is usually 5 days.

3.What payment methods are accepted for TLE72742GATMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE72742GATMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLE72742GATMA1?

TLE72742GATMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLE72742GATMA1 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 TLE72742GATMA1?

For technical support, including TLE72742GATMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE72742GATMA1 requirements.

6.How does Aetrix verify that TLE72742GATMA1 is sourced from the original manufacturer or authorized distributors?

All TLE72742GATMA1 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 TLE72742GATMA1 meets industry standards.

7.What is the process for return or replacement of TLE72742GATMA1?

All TLE72742GATMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE72742GATMA1, 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 TLE72742GATMA1 part is unused and in its original packaging.

Return procedure for TLE72742GATMA1:

1.Submit a request within 90 days.

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

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