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Infineon Technologies TLE42744DV50ATMA1
- Part No.:
- TLE42744DV50ATMA1
- Manufacturer:
- Infineon Technologies
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
TLE42744DV50ATMA1.pdf
- Description:
- IC REG LINEAR 5V 400MA TO252-3
- Quantity:
- Payment:
- Shipping:
Inventory:7,953
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Product details
Overview
TLE42744DV50ATMA1 from Infineon Technologies is a monolithic automotive-grade low dropout linear voltage regulator delivering 5.0 V ±2% at up to 400 mA output current, with input voltage range 5.5–40 V, dropout voltage ≤0.5 V at 400 mA, and operation from −40 °C to +150 °C junction temperature. It provides reverse polarity protection, overtemperature shutdown, and output current limitation for engine control units and body electronics.
For engineers reviewing the TLE42744DV50ATMA1 datasheet, TLE42744DV50ATMA1 pinout, TLE42744DV50ATMA1 application, or TLE42744DV50ATMA1 equivalent, key selection criteria include quiescent current (<100 µA), thermal resistance (RthJC = 3.6 K/W), output capacitor stability requirements (22 µF, ESR ≤3 Ω), AEC-Q100 qualification, and PG-TO252-3 package compatibility with high-power automotive PCB layouts.
Technical Context
The TLE42744DV50ATMA1 integrates a bandgap reference, error amplifier, and saturation-controlled pass transistor in a single silicon die, enabling precise regulation under wide input transients common in 12 V automotive battery systems. Its protection circuitry includes dedicated thermal shutdown and foldback current limiting triggered by junction temperature >165 °C or output short-circuit conditions.
Designed for permanent VBAT connection, it features ultra-low quiescent current (typ. 70 µA) and operates across full automotive temperature range without external biasing. The internal heat slug-electrically tied to GND-is thermally coupled to the PCB copper pour for efficient dissipation in high ambient environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2% - ensures stable MCU core supply within automotive ASIL-B compatible systems |
| Max Output Current | 400 mA - supports multiple downstream ICs (e.g., CAN transceivers, sensors, logic) without external boost |
| Dropout Voltage | ≤0.5 V @ 400 mA - maintains regulation during cold-crank events down to 5.5 V input |
| Quiescent Current | 70 µA typ. - enables always-on functionality in alarm modules and telematics without battery drain |
| Operating Temp | −40 °C to +150 °C - qualified for under-hood placement near engine ECUs and transmission controllers |
| Thermal Resistance | RthJC = 3.6 K/W - allows ≥3 W power dissipation with minimal ΔT between die and heatsink copper |
| ESD Rating | HBM ±4 kV - meets AEC-Q100-002 for robustness against assembly and service handling |
Pinout & Package
Package: PG-TO252-3 (TO-252AA), surface-mount, with exposed heat slug electrically connected to GND and thermally coupled to PCB copper pour.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input | Connects to unregulated 12 V rail; requires local ceramic decoupling (≥1 µF) directly at pin |
| 2 (GND) | Ground | Internal connection to heat slug; must be soldered to large GND plane for thermal and electrical integrity |
| 3 (Q) | Output | Delivers regulated 5 V; requires 22 µF output capacitor with ESR ≤3 Ω placed adjacent to pin |
| Heat Slug | Thermal & Electrical Reference | Internally tied to GND; mandatory connection to PCB GND copper area ≥100 mm² for RthJA ≤27 K/W |
Key Features
| Feature | Design Value |
|---|---|
| Reverse Polarity Protection | Withstands −42 V input without damage - eliminates need for external series diode in battery-reversal-prone harnesses |
| Overtemperature Shutdown | Triggers at Tj >165 °C with automatic recovery - prevents thermal runaway during sustained overload |
| Output Current Limitation | Foldback characteristic limits max current to ~600 mA during short-circuit - reduces power dissipation and PCB trace stress |
| AEC-Q100 Qualified | Grade 0 (−40 °C to +150 °C) - validated for safety-critical power domains in ADAS and powertrain systems |
Applications
| Engine Control Unit (ECU) Power Supply | Body Control Module (BCM) Sub-Regulator |
|---|---|
Use Scenario: Supplies 5 V to microcontroller, CAN transceiver, and analog sensor interface in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Primary post-regulator converting switched 12 V battery rail to clean, protected 5 V domain. Use Value: Maintains regulation during cranking dips to 5.5 V and survives load-dump transients up to 40 V. | Use Scenario: Powers door lock actuators, interior lighting drivers, and LIN transceivers in centralized vehicle body electronics. IC Role / Device Role / Timing Role: Local LDO providing isolated 5 V domain with low quiescent current for sleep-mode integrity. Use Value: Draws only 70 µA in standby, enabling <100 µA total BCM sleep current for extended battery life. |
| Advanced Driver Assistance Systems (ADAS) Camera Module | Electric Power Steering (EPS) Sensor Interface |
Use Scenario: Powers image signal processor and CMOS image sensor in rear-view or surround-view camera modules mounted near exhaust or engine bay. IC Role / Device Role / Timing Role: High-temp-stable 5 V source with integrated thermal shutdown for safety-critical vision processing. Use Value: Operates continuously at 125 °C ambient with RthJC-optimized layout, eliminating external thermal monitoring. | Use Scenario: Supplies torque and position sensors in EPS motor control units subject to vibration and thermal cycling. IC Role / Device Role / Timing Role: Regulated 5 V reference for precision analog front-end and ADC biasing. Use Value: ±2% output accuracy and low noise ensure <0.5% sensor measurement error across full temperature range. |
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 |
|---|---|---|---|
| TLV73350PDBVR | 300 mA max output, RthJA = 120 K/W (SOT-23), no reverse polarity protection | Not AEC-Q100 qualified; limited to cabin/non-safety applications | Use only for cost-sensitive, low-power infotainment peripherals where thermal margin and reverse protection are non-critical |
| TPS7B6950QDCYRQ1 | 250 mA max output, dropout 300 mV @ 250 mA, integrated enable pin, same AEC-Q100 Grade 1 rating | Lacks reverse polarity protection and has lower current capability | Select when system-level reverse protection exists upstream and output current demand is ≤250 mA |
Compared with TLV73350PDBVR and TPS7B6950QDCYRQ1, the TLE42744DV50ATMA1 uniquely combines 400 mA output, reverse polarity tolerance, and Grade 0 temperature rating-making it the only choice for under-hood ECU main 5 V regulation where all three attributes are simultaneously required.
Availability
TLE42744DV50ATMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and electric power steering sensor interfaces requiring stable component supply across automotive production lifecycles.
Supply support for TLE42744DV50ATMA1 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 belongs to Infineon's TLE automotive linear regulator product line, engineered specifically for high-reliability, high-temperature power conditioning in engine, chassis, and safety-critical electronic control units.
FAQ
What is the minimum input voltage required for regulation at full 400 mA load?
The TLE42744DV50ATMA1 requires a minimum input voltage of 5.5 V to maintain 5.0 V ±2% regulation at 400 mA output current. Below this threshold, dropout behavior begins-output voltage drops linearly with input. This specification ensures reliable operation during automotive cold-crank events where battery voltage may dip to 5.5 V for up to 15 ms.
Can the heat slug be left floating or connected to a different net than GND?
No-the heat slug is internally bonded to GND and must be soldered exclusively to the PCB's GND plane. Floating or connecting it to another net creates electrical shorts, violates JEDEC thermal test conditions, and degrades RthJC performance. Thermal vias to inner GND layers are recommended to achieve the specified 3.6 K/W junction-to-case resistance.
Does the device require an external capacitor on the input pin, and what type is recommended?
Yes-a ceramic capacitor ≥1 µF must be placed directly between pin 1 (I) and pin 2 (GND), with lead length <2 mm. X7R or X5R dielectrics are recommended for stable capacitance across temperature and DC bias. This capacitor suppresses high-frequency noise from upstream switching converters and prevents oscillation during fast load transients.
Is the TLE42744DV50ATMA1 pin-compatible with other variants like TLE42744GV50 or TLE42744EV50?
No-TLE42744DV50ATMA1 uses PG-TO252-3 (3-pin), while TLE42744GV50 uses PG-TO263-3 (3-pin but larger footprint), and TLE42744EV50 uses PG-SSOP-14 exposed pad (14-pin). Pin functions differ across packages: only DV/GV variants share identical 3-pin assignment (I-GND-Q), but mechanical layout and thermal pad geometry are not interchangeable without PCB redesign.
TLE42744DV50ATMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- 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-TO252-3
TLE42744DV50ATMA1 FAQ
1.How can I place an order for TLE42744DV50ATMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE42744DV50ATMA1 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 TLE42744DV50ATMA1 reliable?
The price and inventory of TLE42744DV50ATMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE42744DV50ATMA1 is usually 5 days.
3.What payment methods are accepted for TLE42744DV50ATMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE42744DV50ATMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE42744DV50ATMA1?
TLE42744DV50ATMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE42744DV50ATMA1 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 TLE42744DV50ATMA1?
For technical support, including TLE42744DV50ATMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE42744DV50ATMA1 requirements.
6.How does Aetrix verify that TLE42744DV50ATMA1 is sourced from the original manufacturer or authorized distributors?
All TLE42744DV50ATMA1 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 TLE42744DV50ATMA1 meets industry standards.
7.What is the process for return or replacement of TLE42744DV50ATMA1?
All TLE42744DV50ATMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE42744DV50ATMA1, 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 TLE42744DV50ATMA1 part is unused and in its original packaging.
Return procedure for TLE42744DV50ATMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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