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Infineon Technologies TLE42742DV50NTMA1
- Part No.:
- TLE42742DV50NTMA1
- Manufacturer:
- Infineon Technologies
- Package:
- -
- Datasheet:
-
TLE42742DV50NTMA1.pdf
- Description:
- IC REG LINEAR 5V 400MA
- Quantity:
- Payment:
- Shipping:
Inventory:2,800
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Product details
Overview
TLE42742DV50NTMA1 from Infineon Technologies is a monolithic high-precision linear voltage regulator delivering fixed 5.0 V ±2% output at up to 400 mA, featuring integrated short-circuit and thermal shutdown protection, designed for automotive power supply rails in engine control units and body electronics.
For engineers reviewing the TLE42742DV50NTMA1 datasheet, TLE42742DV50NTMA1 pinout, TLE42742DV50NTMA1 application, or TLE42742DV50NTMA1 equivalent, key selection criteria include dropout voltage (typ. 300 mV at 400 mA), quiescent current (120 µA), and AEC-Q100 Grade 1 qualification for under-hood operation.
Technical Context
This device implements a bandgap reference-based error amplifier driving a PNP pass transistor, enabling stable regulation across input voltages from 5.5 V to 42 V. It includes reverse-battery protection and load-dump tolerance up to 60 V transient per ISO 7637-2 Pulse 5a.
Internal circuitry provides undervoltage lockout (UVLO) activation below 4.5 V and enables precise reset functionality via an open-drain RESET output that asserts low when VOUT drops below 4.75 V with 100 ms delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±2% - ensures compatibility with 5 V microcontrollers and CAN transceivers without external feedback. |
| Max Output Current | 400 mA - supports multiple downstream ICs including MCUs, sensors, and interface ICs in compact ECUs. |
| Dropout Voltage | 300 mV @ 400 mA - enables operation down to 5.3 V input, critical during cold-crank battery conditions. |
| Quiescent Current | 120 µA - minimizes standby power loss in always-on vehicle modules like door controllers. |
| Reset Threshold | 4.75 V with 100 ms delay - provides clean power-on reset signaling for microcontroller initialization. |
| Operating Temp | −40 °C to +150 °C - qualified for placement near engines or in transmission control units. |
Pinout & Package
Supplied in PG-TO252-3 (DPAK) package with exposed thermal pad for enhanced heat dissipation in automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input voltage supply | Accepts 5.5–42 V DC; withstands 60 V load-dump transients per ISO 7637-2. |
| GND | Power ground reference | Common return path for regulator output and internal protection circuits. |
| VOUT | Regulated 5 V output | Delivers up to 400 mA; connects directly to MCU VCC or sensor supply rails. |
| RESET | Open-drain reset output | Pulls low when VOUT < 4.75 V; requires external pull-up for microcontroller reset assertion. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40 °C to +150 °C ambient operation in safety-critical automotive systems. |
| Reverse-battery protection | Withstands −16 V applied to IN without damage-eliminates need for external series diode. |
| Integrated thermal shutdown | Activates at junction temperature >170 °C and auto-recovers after cooldown-prevents permanent failure during overload. |
| Load-dump protection | Survives 60 V/100 ms transients per ISO 7637-2 Pulse 5a-enables direct battery connection in ECU designs. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powering 5 V microcontrollers, knock sensors, and fuel injector drivers in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Primary 5 V supply regulator with reset signaling for MCU boot sequencing and fault-safe shutdown. Use Value: Maintains regulation during cold-crank (down to 5.3 V input) and rejects alternator ripple, ensuring deterministic MCU operation. | Use Scenario: Supplying door module logic, window lift motors, and interior lighting controllers. IC Role / Device Role / Timing Role: Main 5 V rail generator with reverse-battery and load-dump immunity for under-dash mounting. Use Value: Eliminates external protection components, reducing BOM count and PCB area while meeting OEM EMC requirements. |
| Transmission Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Camera ECU |
Use Scenario: Providing stable 5 V power to solenoid drivers, gear position sensors, and CAN transceivers in automatic transmissions. IC Role / Device Role / Timing Role: High-reliability linear regulator with thermal foldback for continuous-duty solenoid actuation support. Use Value: Sustains 400 mA output at 125 °C ambient without derating-enables compact, fanless TCU enclosures. | Use Scenario: Powering image signal processors and serializer ICs in rear-view or surround-view camera modules. IC Role / Device Role / Timing Role: Low-noise 5 V supply with precise reset generation for synchronized camera boot and frame sync timing. Use Value: 120 µA quiescent current extends sleep-mode battery life; RESET output aligns ISP initialization with power rail stabilization. |
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 load-dump rating | Suitable only for non-automotive, low-power industrial sensors | Select only if AEC-Q100 and 60 V transient immunity are not required. |
| MC78T05CD2TR4G | Higher dropout (2 V @ 400 mA), no reverse-battery protection, no RESET | Limited to 12 V systems with stable input; lacks automotive qualification | Use only in legacy 12 V chassis designs where thermal margin permits higher dropout loss. |
Compared with TLV73350PDBVR and MC78T05CD2TR4G, TLE42742DV50NTMA1 uniquely combines AEC-Q100 Grade 1, 60 V load-dump survival, reverse-battery tolerance, and integrated RESET-making it the sole choice for new automotive ECU designs requiring functional safety compliance.
Availability
TLE42742DV50NTMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, and transmission control units requiring stable component supply with full automotive qualification traceability.
Supply support for TLE42742DV50NTMA1 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 security solutions, with global R&D and manufacturing infrastructure.
The TLE42xx family delivers high-precision, high-reliability linear regulators engineered specifically for automotive power supply architectures-including ECU, BCM, and ADAS subsystems requiring robustness against harsh electrical environments.
FAQ
What is the minimum input voltage required for regulation at full 400 mA load?
The TLE42742DV50NTMA1 maintains regulation down to 5.3 V input at 400 mA due to its 300 mV typical dropout voltage. Below this threshold, output voltage collapses linearly; operation is guaranteed only above 5.5 V per datasheet specifications.
Does the RESET output require an external pull-up resistor?
Yes-the RESET pin is open-drain and must be pulled up to a logic-compatible voltage (e.g., 3.3 V or 5 V) with a resistor typically between 10 kΩ and 100 kΩ to assert a valid reset signal to the connected microcontroller.
Can this regulator be used in parallel to increase output current?
No-TLE42742DV50NTMA1 lacks current-sharing capability or master/slave control. Parallel connection risks thermal imbalance and uncontrolled current distribution; use a single unit rated for the full load or select a higher-current alternative.
Is the thermal pad on the DPAK package electrically connected?
Yes-the exposed thermal pad is internally connected to GND and must be soldered to a PCB copper pour tied to the system ground plane to ensure both thermal performance and electrical safety per Infineon's mounting recommendations.
TLE42742DV50NTMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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:
- -
TLE42742DV50NTMA1 FAQ
1.How can I place an order for TLE42742DV50NTMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE42742DV50NTMA1 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 TLE42742DV50NTMA1 reliable?
The price and inventory of TLE42742DV50NTMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE42742DV50NTMA1 is usually 5 days.
3.What payment methods are accepted for TLE42742DV50NTMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE42742DV50NTMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE42742DV50NTMA1?
TLE42742DV50NTMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE42742DV50NTMA1 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 TLE42742DV50NTMA1?
For technical support, including TLE42742DV50NTMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE42742DV50NTMA1 requirements.
6.How does Aetrix verify that TLE42742DV50NTMA1 is sourced from the original manufacturer or authorized distributors?
All TLE42742DV50NTMA1 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 TLE42742DV50NTMA1 meets industry standards.
7.What is the process for return or replacement of TLE42742DV50NTMA1?
All TLE42742DV50NTMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE42742DV50NTMA1, 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 TLE42742DV50NTMA1 part is unused and in its original packaging.
Return procedure for TLE42742DV50NTMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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