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Infineon Technologies TLF80511TFV50ATMA1
- Part No.:
- TLF80511TFV50ATMA1
- Manufacturer:
- Infineon Technologies
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
TLF80511TFV50ATMA1.pdf
- Description:
- IC REG LINEAR 5V 400MA TO252-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,820
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Product details
Overview
TLF80511TFV50ATMA1 from Infineon is a low-dropout linear voltage regulator delivering a fixed 5 V output with ±2% precision, supporting up to 400 mA load current, ultra-low 38 µA quiescent current, and 100 mV dropout at 100 mA - designed for always-on automotive subsystems such as body control modules and sensor interfaces.
For engineers reviewing the TLF80511TFV50ATMA1 datasheet, TLF80511TFV50ATMA1 pinout, TLF80511TFV50ATMA1 application, or TLF80511TFV50ATMA1 equivalent, key selection criteria include AEC-Q100 qualification, extended 3.3 V input start-up, thermal shutdown behavior, and single 1 µF ceramic output capacitor stability requirement.
Technical Context
The TLF80511TFV50ATMA1 implements a bandgap-referenced feedback loop controlling an internal PNP pass transistor, enabling regulation down to 100 mV dropout while maintaining stability with only 1 µF output capacitance and ≤5 Ω ESR. Its fast regulation architecture avoids external compensation networks.
It integrates overtemperature shutdown (restarting after cooldown) and foldback current limiting to protect against sustained short-circuit faults, with junction temperature operation from –40°C to +150°C and absolute maximum input voltage of 45 V - meeting harsh automotive transients per ISO 7637-2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±2% - ensures stable MCU/Sensor supply within automotive voltage tolerance bands |
| Max Output Current | 400 mA - sufficient for multi-rail microcontrollers and CAN transceivers without external boost |
| Quiescent Current | 38 µA typical - enables >1-year battery standby in always-on vehicle modules |
| Dropout Voltage | 100 mV at 100 mA - allows operation down to 5.1 V input during cold-crank conditions |
| Input Voltage Range | 3.3 V to 40 V - supports direct battery connection across ignition cycles and load-dump events |
| Output Capacitor | 1 µF ceramic (ESR ≤5 Ω) - eliminates need for tantalum or large electrolytics, reducing BOM cost and footprint |
| Operating Temp | –40°C to +150°C - qualified for under-hood placement without derating |
Pinout & Package
TLF80511TFV50ATMA1 uses PG-TO252-3 (DPAK) package with exposed thermal pad (Tab) connected to GND. The 3-pin configuration supports high-current, thermally demanding automotive mounting on copper-pour PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input | High-side power entry; requires local 100 nF decoupling to GND to suppress line transients |
| 2 (GND) | Ground Reference | Signal and power return; must be low-impedance path to minimize noise coupling into regulation loop |
| 3 (Q) | Regulated Output | 5 V supply rail; connects directly to load with 1 µF ceramic capacitor placed <2 mm from pin |
| Tab | Thermal Pad / GND | Primary heat dissipation path; must be soldered to ≥300 mm² copper pour tied to GND plane |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified | Grade 0 (–40°C to +150°C), stress-tested for automotive reliability including HTOL, TC, and ESD |
| Extended Low-Vin Operation | Starts regulating at 3.3 V input - enables use in post-buck pre-regulator stages or low-voltage backup rails |
| Integrated Thermal Protection | Hysteresis-based shutdown with automatic restart - prevents permanent damage during sustained overload |
| Current Limit Foldback | Reduces output current during short-circuit to limit power dissipation and maintain safe junction temperature |
| Green Product | RoHS-compliant, halogen-free, lead-free - meets automotive ELV and IMDS reporting requirements |
Applications
| Body Control Module (BCM) | Automotive Camera Power Supply |
|---|---|
|
Use Scenario: Powering microcontroller, LIN transceiver, and door lock actuators in centralized vehicle body electronics. IC Role / Device Role / Timing Role: Primary 5 V LDO supplying logic rails and analog sensors with low-noise, high-PSRR regulation. Use Value: 38 µA quiescent current extends battery life during vehicle sleep mode; 150°C rating permits placement near engine compartment harnesses. |
Use Scenario: Providing clean 5 V bias to CMOS image sensor and ISP in ADAS front/rear cameras. IC Role / Device Role / Timing Role: Post-regulator after DC/DC converter, filtering switching noise before sensitive analog imaging circuitry. Use Value: 1 µF output capacitor minimizes board area in space-constrained camera modules; ±2% accuracy maintains ADC reference stability. |
| Engine Control Unit (ECU) Sensor Interface | Automotive Infotainment Display Backlight Driver Bias |
|
Use Scenario: Supplying 5 V to pressure, temperature, and knock sensors interfacing with ECU ADC inputs. IC Role / Device Role / Timing Role: Local point-of-load regulator isolating sensor analog section from noisy digital domains. Use Value: 100 mV dropout ensures uninterrupted operation during cranking (battery dip to ~6 V); low EMI supports precise sensor measurements. |
Use Scenario: Generating stable 5 V bias for LED driver ICs powering TFT-LCD backlight in head units and digital clusters. IC Role / Device Role / Timing Role: Auxiliary LDO providing reference and logic supply independent of main display power rail. Use Value: AEC-Q100 qualification guarantees long-term reliability under thermal cycling; 400 mA output supports multi-channel LED drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLF80511TFV33ATMA1 | Same package and architecture, but fixed 3.3 V output (±2%) and identical 400 mA/38 µA specs | Used where 3.3 V logic rails dominate (e.g., ARM Cortex-M7 MCUs), not 5 V systems | Select when target SoC or peripheral requires 3.3 V instead of 5 V; pin-compatible drop-in replacement |
| NCP1117ST50T3G | Higher 8 mA quiescent current, 1.2 V dropout at 800 mA, no AEC-Q100 qualification, TO-220/TO-263 packages | Suitable for industrial or consumer designs without automotive qualification or ultra-low-Iq needs | Choose for cost-sensitive non-automotive applications where thermal margin and qualification are secondary |
Compared with TLF80511TFV50ATMA1, the V33 variant serves different voltage domains without performance trade-offs, while the NCP1117 offers higher current but lacks automotive reliability, thermal robustness, and ultra-low standby consumption.
Availability
TLF80511TFV50ATMA1 is available at Aetrix Electronics and suitable for automotive body electronics, ADAS camera modules, engine sensor interfaces, and infotainment displays requiring stable component supply with full AEC-Q100 traceability and long-lifecycle support.
Supply support for TLF80511TFV50ATMA1 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 AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and security solutions, with global R&D and manufacturing infrastructure.
The OPTIREG™ linear product line delivers AEC-Q100-qualified LDOs and DC/DC converters engineered specifically for automotive power domains - emphasizing ultra-low Iq, wide Vin range, and robust thermal protection in harsh environments.
FAQ
Is TLF80511TFV50ATMA1 pin-compatible with other TO252-3 LDOs?
No - while it shares the PG-TO252-3 mechanical outline, its pin assignment (I-GND-Q with Tab/GND) differs from standard TO252-3 LDOs like the LM2940 (IN-GND-OUT). Layout must follow Infineon's recommended footprint with thermal pad connection to GND plane and strict decoupling placement.
Can TLF80511TFV50ATMA1 operate with no input capacitor?
Yes - the datasheet states an input capacitor is not required for stability, though a 100 nF ceramic capacitor close to the I pin is recommended to suppress line transients and improve transient response during load steps or battery ripple.
What happens during continuous output short-circuit?
The device enters foldback current limiting and thermal shutdown cycling: output current drops to ~100 mA, junction temperature rises to 150°C, power stage shuts off, then restarts after cooling. This protects against destruction but reduces lifetime if sustained - external fuse or upstream current limiting is advised for permanent fault scenarios.
Does TLF80511TFV50ATMA1 support reverse polarity protection?
No - it lacks integrated reverse polarity protection. The datasheet explicitly recommends adding an external series Schottky diode (or ideal diode controller) between battery and input pin to prevent damage from accidental reverse battery connection, especially in service environments.
TLF80511TFV50ATMA1 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:
- Not For New Designs
- 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):
- 46 µA
- Current - Supply (Max):
- 80 µA
- PSRR:
- 55dB (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-TO252-3
TLF80511TFV50ATMA1 FAQ
1.How can I place an order for TLF80511TFV50ATMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLF80511TFV50ATMA1 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 TLF80511TFV50ATMA1 reliable?
The price and inventory of TLF80511TFV50ATMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLF80511TFV50ATMA1 is usually 5 days.
3.What payment methods are accepted for TLF80511TFV50ATMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLF80511TFV50ATMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLF80511TFV50ATMA1?
TLF80511TFV50ATMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLF80511TFV50ATMA1 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 TLF80511TFV50ATMA1?
For technical support, including TLF80511TFV50ATMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLF80511TFV50ATMA1 requirements.
6.How does Aetrix verify that TLF80511TFV50ATMA1 is sourced from the original manufacturer or authorized distributors?
All TLF80511TFV50ATMA1 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 TLF80511TFV50ATMA1 meets industry standards.
7.What is the process for return or replacement of TLF80511TFV50ATMA1?
All TLF80511TFV50ATMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLF80511TFV50ATMA1, 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 TLF80511TFV50ATMA1 part is unused and in its original packaging.
Return procedure for TLF80511TFV50ATMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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