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Infineon Technologies TLE42742DV50ATMA2
- Part No.:
- TLE42742DV50ATMA2
- Manufacturer:
- Infineon Technologies
- Package:
- -
- Datasheet:
-
TLE42742DV50ATMA2.pdf
- Description:
- IC REG LINEAR 5V 400MA TO252-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,611
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Product details
Overview
TLE42742DV50ATMA2 from Infineon Technologies is a monolithic linear voltage regulator delivering fixed 5.0 V output at up to 400 mA, featuring integrated short-circuit and thermal shutdown protection, reverse-polarity protection, and wide input voltage range (5.5 V to 40 V), used in automotive body electronics power supplies.
For engineers reviewing the TLE42742DV50ATMA2 datasheet, TLE42742DV50ATMA2 pinout, TLE42742DV50ATMA2 application, or TLE42742DV50ATMA2 equivalent, key selection criteria include dropout voltage at full load, quiescent current in standby mode, load transient response under 100 mA step change, and AEC-Q100 Grade 1 qualification for under-hood use.
Technical Context
This device operates as a low-dropout (LDO) linear regulator with internal PNP pass transistor architecture, enabling stable regulation down to 0.5 V dropout at 400 mA. It integrates diagnostic feedback via open-collector RESET output activated during undervoltage or overtemperature conditions.
Designed for automotive environments, it supports extended temperature operation (–40 °C to +150 °C), meets ISO 7637-2 pulse immunity requirements (Pulse 1, 2a, 3a/b), and includes enable control with hysteresis for controlled startup sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±2%, ensuring compatibility with 5 V microcontrollers and CAN transceivers. |
| Max Output Current | 400 mA continuous, sufficient to power multiple automotive sensors and logic ICs from single rail. |
| Input Voltage Range | 5.5 V to 40 V, supporting direct connection to 12 V/24 V vehicle batteries with load dump tolerance. |
| Dropout Voltage | Typ. 0.5 V at 400 mA, enabling regulation even during cranking when battery drops to 6 V. |
| Quiescent Current | Typ. 130 µA in standby mode, minimizing parasitic drain on vehicle battery during sleep. |
| Operating Temp | –40 °C to +150 °C ambient, qualified per AEC-Q100 Grade 1 for engine compartment mounting. |
Pinout & Package
Supplied in TO252-3 (DPAK) surface-mount package with exposed thermal pad for enhanced heat dissipation in high-ambient automotive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input voltage supply | Accepts unregulated 12 V/24 V battery rail; connects to external input capacitor for stability. |
| GND | Power ground reference | Common return path for load current and internal bias; tied to thermal pad for thermal conduction. |
| OUT | Regulated output | Delivers stable 5.0 V to downstream loads; requires local ceramic output capacitor ≥1 µF. |
| RESET | Open-drain diagnostic output | Pulled low during UVLO or thermal shutdown; requires external pull-up for system monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated reverse-polarity protection | Withstands –40 V input without external diode, eliminating need for series blocking diode in battery-reversed scenarios. |
| Enable input with hysteresis | EN pin accepts 2.5 V–5.5 V logic; built-in hysteresis prevents oscillation during slow-rising enable signals. |
| Reset output with delay | RESET asserts after 120 ms power-on delay and remains active during UVLO or overtemperature events. |
| Short-circuit foldback current limit | Limits output current to ~200 mA during sustained short, reducing power dissipation and enabling safe recovery. |
Applications
| Body Control Module (BCM) | Door Module Power Supply |
|---|---|
Use Scenario: Centralized power distribution for interior lighting, window lifters, and mirror controls in modern vehicles. IC Role / Device Role / Timing Role: Primary 5 V LDO supplying MCU, LIN transceivers, and Hall-effect sensors. Use Value: Enables single-rail design with integrated diagnostics (RESET), reducing BOM count and improving fault visibility. | Use Scenario: Local power regulation inside door-mounted ECUs handling lock actuators and proximity sensors. IC Role / Device Role / Timing Role: Load-switched 5 V regulator activated only during door operation to minimize standby current. Use Value: Quiescent current of 130 µA ensures <10 µA total module sleep current, meeting OEM battery drain targets. |
| Seat Control Unit | Roof Module (Sunroof/Blind) |
Use Scenario: Powering position sensors, motor drivers, and memory ICs in multi-motor seat adjustment systems. IC Role / Device Role / Timing Role: Secondary 5 V regulator downstream of main DC/DC, providing clean supply for analog sensor front-ends. Use Value: Low noise and high PSRR (>60 dB @ 100 Hz) prevent interference in potentiometer and rotary encoder readings. | Use Scenario: Compact power solution for sunroof controllers mounted in limited-space roof rails. IC Role / Device Role / Timing Role: High-temperature-rated LDO operating at up to +150 °C ambient near glass surfaces. Use Value: TO252-3 package with thermal pad sustains 400 mA output at 125 °C case temperature without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73350PDBVR | Lower max current (300 mA), no RESET output, no AEC-Q100 qualification. | Suitable only for non-automotive industrial or consumer use with lower reliability requirements. | Select only if automotive qualification and diagnostic features are not required. |
| NCP1117ST50T3G | Higher dropout (1.1 V @ 800 mA), no enable or RESET, AEC-Q100 Grade 3 (–40 °C to +125 °C). | Limited to cabin applications with lower ambient temperature and no diagnostic needs. | Choose when cost is critical and thermal margin allows higher dropout in 12 V systems. |
Compared with TLV73350PDBVR and NCP1117ST50T3G, TLE42742DV50ATMA2 uniquely combines AEC-Q100 Grade 1 rating, integrated RESET, reverse-polarity protection, and 400 mA capability in TO252-3 - making it the only option qualified for under-hood 5 V regulation with full diagnostics.
Availability
TLE42742DV50ATMA2 is available at Aetrix Electronics and suitable for automotive body electronics, seat control units, and roof modules requiring stable component supply across production lifecycles.
Supply support for TLE42742DV50ATMA2 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.
The TLE4274x family delivers automotive-grade linear regulators optimized for robustness in harsh vehicle electrical environments, with emphasis on fail-safe behavior and diagnostic integration.
FAQ
What is the minimum input voltage required for regulation?
The TLE42742DV50ATMA2 requires a minimum input voltage of 5.5 V to maintain 5.0 V output regulation. Below this threshold, the device enters undervoltage lockout (UVLO) and asserts the RESET signal low. This ensures downstream circuits are not powered with unstable or insufficient voltage during battery cranking or weak battery conditions.
Does the RESET output require an external pull-up resistor?
Yes, the RESET pin is an open-drain output and must be pulled up externally-typically with a 10 kΩ resistor to 5 V or another logic rail. Without this pull-up, the RESET signal cannot go high, preventing proper system-level fault detection and microcontroller reset coordination during startup or fault conditions.
Can this regulator be used without the ENABLE pin connected?
Yes-the ENABLE pin has an internal pull-up to IN, so the device powers up automatically when input voltage is applied. However, leaving EN floating is not recommended in noisy automotive environments; best practice is to tie EN directly to IN or use a controlled logic signal to ensure deterministic startup and avoid false disable during transients.
How does thermal shutdown behave during overload?
When junction temperature exceeds +170 °C, thermal shutdown activates, turning off the pass transistor and asserting RESET low. The device remains latched off until temperature falls below +150 °C (typical hysteresis = 20 °C), then resumes normal operation automatically-no external reset required. This protects against sustained overload or poor heatsinking without requiring system intervention.
TLE42742DV50ATMA2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- 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 (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- -
- Supplier Device Package:
- -
TLE42742DV50ATMA2 FAQ
1.How can I place an order for TLE42742DV50ATMA2 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE42742DV50ATMA2 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 TLE42742DV50ATMA2 reliable?
The price and inventory of TLE42742DV50ATMA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE42742DV50ATMA2 is usually 5 days.
3.What payment methods are accepted for TLE42742DV50ATMA2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE42742DV50ATMA2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE42742DV50ATMA2?
TLE42742DV50ATMA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE42742DV50ATMA2 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 TLE42742DV50ATMA2?
For technical support, including TLE42742DV50ATMA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE42742DV50ATMA2 requirements.
6.How does Aetrix verify that TLE42742DV50ATMA2 is sourced from the original manufacturer or authorized distributors?
All TLE42742DV50ATMA2 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 TLE42742DV50ATMA2 meets industry standards.
7.What is the process for return or replacement of TLE42742DV50ATMA2?
All TLE42742DV50ATMA2 units undergo pre-shipment inspection (PSI). If there is an issue with TLE42742DV50ATMA2, 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 TLE42742DV50ATMA2 part is unused and in its original packaging.
Return procedure for TLE42742DV50ATMA2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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