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Infineon Technologies TLE42744GV50ATMA1
- Part No.:
- TLE42744GV50ATMA1
- Manufacturer:
- Infineon Technologies
- Package:
- TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Datasheet:
-
TLE42744GV50ATMA1.pdf
- Description:
- IC REG LINEAR 5V 400MA TO263-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,010
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Product details
Overview
TLE42744GV50ATMA1 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 ≤0.4 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 TLE42744GV50ATMA1 datasheet, TLE42744GV50ATMA1 pinout, TLE42744GV50ATMA1 application, or TLE42744GV50ATMA1 equivalent, key selection criteria include its AEC-Q100 qualification, PG-TO263-3 thermal performance (RthJC = 3.6 K/W), quiescent current < 100 µA, and integrated short-circuit/overload protection in harsh automotive environments.
Technical Context
The TLE42744GV50ATMA1 implements a bandgap reference-based control amplifier with saturation control and integrated protection logic. Its architecture includes internal thermal sensing, current-limiting feedback, and reverse-polarity blocking via substrate diode configuration.
It operates as a fixed-output LDO without external adjustment components, relying on internal trimming for ±2% output accuracy across temperature and load. The device uses a GND-connected heat slug for thermal dissipation and requires a minimum 22 µF output capacitor with ESR ≤3 Ω for stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2% - stable supply for MCU core/logic rails in automotive ECUs |
| Max Output Current | 400 mA - sufficient for powering multiple sensors and interface ICs |
| Input Voltage Range | 5.5 V to 40 V - supports cold-crank (5.5 V) and load-dump (40 V) transients |
| Dropout Voltage | ≤0.4 V at 400 mA - enables regulation down to 5.4 V input during cranking |
| Quiescent Current | <100 µA - enables always-on functionality without battery drain |
| Junction Temp Range | −40 °C to +150 °C - qualified for under-hood placement per AEC-Q100 Grade 0 |
| Thermal Resistance | RthJC = 3.6 K/W - enables efficient heat transfer to PCB copper or heatsink |
Pinout & Package
Package: PG-TO263-3 (D²PAK), thermally enhanced surface-mount package with exposed GND-connected heat slug.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input | High-side connection to unregulated supply; requires local ceramic decoupling to GND |
| 2 (GND) | Ground | Internal connection to heat slug; must be soldered to large GND copper area for thermal and electrical integrity |
| 3 (Q) | Output | Regulated 5.0 V output; requires ≥22 µF low-ESR capacitor placed adjacent to pins |
| Heat Slug | Thermal & Electrical Ground | Internally tied to GND; mandatory connection to PCB GND plane and heatsink area for RthJA ≤22 K/W |
Key Features
| Feature | Design Value |
|---|---|
| Reverse Polarity Protection | Withstands −42 V input without damage - eliminates need for external series diode |
| Overtemperature Shutdown | Activates at Tj ≥175 °C (hysteresis ~15 °C) - prevents thermal runaway during fault conditions |
| Output Current Limitation | Soft-limited to ~600 mA peak - sustains safe operation during short-circuit events |
| AEC-Q100 Qualified | Grade 0 (−40 °C to +150 °C) - validated for powertrain and safety-critical modules |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers microcontroller, CAN transceiver, and analog sensor interfaces in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Primary 5 V LDO supplying critical logic and analog subsystems with high transient immunity. Use Value: Maintains regulation during cold-crank (5.5 V input) and load-dump (40 V surge), ensuring uninterrupted ECU operation. | Use Scenario: Supplies door module controllers, lighting drivers, and LIN transceivers in vehicle body electronics. IC Role / Device Role / Timing Role: Always-on 5 V rail with ultra-low quiescent current for wake-up circuitry and memory retention. Use Value: Draws <100 µA in standby, enabling multi-year battery life in parked vehicle mode. |
| Advanced Driver Assistance Systems (ADAS) Camera Power | Transmission Control Unit (TCU) |
Use Scenario: Provides clean 5 V bias to image sensor and ISP in rear-view or surround-view camera modules. IC Role / Device Role / Timing Role: Low-noise, thermally robust LDO placed near sensor to minimize EMI and voltage droop. Use Value: RthJC = 3.6 K/W and GND-connected heat slug enable stable operation at +125 °C ambient. | Use Scenario: Regulates power for solenoid drivers, position sensors, and communication ICs in automatic transmission systems. IC Role / Device Role / Timing Role: Fault-tolerant 5 V source with integrated short-circuit and overtemperature protection. Use Value: Self-protects during solenoid coil short events without requiring external current-sense circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73350PDBVR | Lower max current (300 mA), no AEC-Q100 qualification, RthJA = 120 K/W (SOT-23) | Not suitable for under-hood or safety-critical use; limited thermal capability | Select only for non-automotive, low-power, ambient-temperature applications |
| NCP1117ST50T3G | Higher dropout (1.2 V @ 800 mA), no reverse polarity protection, AEC-Q100 not claimed | Lacks fault protection needed in 12 V automotive systems; requires external diode | Acceptable only in cost-sensitive, non-safety designs with stable input and no reverse-battery risk |
Compared with TLV73350PDBVR and NCP1117ST50T3G, the TLE42744GV50ATMA1 uniquely combines AEC-Q100 Grade 0 qualification, reverse polarity tolerance, and 3.6 K/W junction-to-case thermal resistance-making it the only choice for thermally constrained, safety-relevant 5 V regulation in modern ECUs and ADAS modules.
Availability
TLE42744GV50ATMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera power supplies, and transmission control units requiring stable component supply across automotive production lifecycles.
Supply support for TLE42744GV50ATMA1 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 electronics, and industrial control ICs, with global manufacturing and AEC-Q100 validation infrastructure.
The TLE42744 belongs to Infineon's TLE automotive linear regulator product line, engineered specifically for high-reliability, high-temperature power supply in engine, transmission, and chassis control systems.
FAQ
What is the minimum input voltage required for regulation at full 400 mA load?
The TLE42744GV50ATMA1 maintains regulation down to 5.5 V input across temperature and load. At 400 mA output and 25 °C, the dropout voltage is ≤0.4 V, so 5.4 V input is sufficient-but the functional range specifies 5.5 V minimum to ensure margin across −40 °C to +150 °C junction temperature and production tolerances.
Can this regulator operate without an output capacitor?
No. The device requires a minimum 22 µF output capacitor with ESR ≤3 Ω (at 10 kHz) for loop stability. Omitting or undersizing the capacitor causes oscillation and output voltage instability, especially under dynamic load changes typical in automotive microcontroller applications.
Is the heat slug electrically isolated from other pins?
No. The heat slug is internally connected to Pin 2 (GND) and must be soldered directly to the PCB's GND plane. This dual-purpose connection provides both thermal conduction and low-impedance grounding essential for noise immunity and protection circuit reference integrity.
Does the device support adjustable output voltage via external resistors?
No. The TLE42744GV50ATMA1 is a fixed-output regulator with factory-trimmed 5.0 V ±2% accuracy. It lacks feedback (FB) or adjust (ADJ) pins; output voltage cannot be modified externally. For adjustable variants, consider Infineon's TLE4275 series with external resistor divider support.
TLE42744GV50ATMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- 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-TO263-3-1
TLE42744GV50ATMA1 FAQ
1.How can I place an order for TLE42744GV50ATMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE42744GV50ATMA1 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 TLE42744GV50ATMA1 reliable?
The price and inventory of TLE42744GV50ATMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE42744GV50ATMA1 is usually 5 days.
3.What payment methods are accepted for TLE42744GV50ATMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE42744GV50ATMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE42744GV50ATMA1?
TLE42744GV50ATMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE42744GV50ATMA1 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 TLE42744GV50ATMA1?
For technical support, including TLE42744GV50ATMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE42744GV50ATMA1 requirements.
6.How does Aetrix verify that TLE42744GV50ATMA1 is sourced from the original manufacturer or authorized distributors?
All TLE42744GV50ATMA1 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 TLE42744GV50ATMA1 meets industry standards.
7.What is the process for return or replacement of TLE42744GV50ATMA1?
All TLE42744GV50ATMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE42744GV50ATMA1, 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 TLE42744GV50ATMA1 part is unused and in its original packaging.
Return procedure for TLE42744GV50ATMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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