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Infineon Technologies TLF80511TFV33ATMA2
- Part No.:
- TLF80511TFV33ATMA2
- Manufacturer:
- Infineon Technologies
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
TLF80511TFV33ATMA2.pdf
- Description:
- IC REG LIN 3.3V 400MA TO252-3-11
- Quantity:
- Payment:
- Shipping:
Inventory:5,741
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Product details
Overview
TLF80511TFV33ATMA2 from Infineon Technologies is a fixed-output, low-dropout linear voltage regulator delivering 3.3 V ±2% at up to 400 mA, with 38 µA quiescent current, 100 mV dropout at 100 mA, and operation down to 3.3 V input-designed for always-on automotive subsystems such as body control modules and sensor interfaces.
For engineers reviewing the TLF80511TFV33ATMA2 datasheet, TLF80511TFV33ATMA2 pinout, TLF80511TFV33ATMA2 application, or TLF80511TFV33ATMA2 equivalent, key selection criteria include ultra-low IQ for battery-constrained systems, AEC-Q100 qualification, thermal shutdown behavior, and minimal 1 µF output capacitor requirement for stability.
Technical Context
The device implements a bandgap-referenced feedback loop controlling an internal pass transistor, with integrated current limiting and thermal shutdown circuitry that disables the output under overcurrent or junction temperature >150°C-restarting autonomously after cooldown. Its fast regulation architecture enables stable operation with only 1 µF ceramic output capacitance (ESR ≤5 Ω at 10 kHz).
It operates across an extended input range of 3.3 V to 40 V, entering dropout when VI < VQ,nom + Vdr (i.e., <3.4 V for 3.3 V output), maintaining regulated output down to VI = 3.3 V before collapsing. Absolute maximum input voltage is 45 V, with thermal resistance RthJC = 4 K/W and RthJA = 27 K/W on standard 2-layer FR4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±2% - ensures compatible logic-level supply for MCU peripherals and CAN transceivers in automotive domains. |
| Max Output Current | 400 mA - supports moderate-power loads like microcontrollers, sensors, and interface ICs without external boost stages. |
| Quiescent Current | 38 µA - enables multi-year battery life in always-on vehicle modules (e.g., door module wake-up circuits). |
| Dropout Voltage | 100 mV at 100 mA - allows regulation from 3.4 V input, critical during cold-crank (battery dips to ~6 V) with upstream buck stages. |
| Input Voltage Range | 3.3 V to 40 V - covers full automotive battery range including load dump (40 V transient) with external clamping. |
| Operating Temperature | -40°C to +150°C - qualified per AEC-Q100 Grade 0, enabling placement near powertrain ECUs or under-hood controllers. |
| Output Capacitor | 1 µF ceramic (ESR ≤5 Ω) - eliminates need for bulk electrolytics, reducing PCB area and improving long-term reliability. |
Pinout & Package
TLF80511TFV33ATMA2 is housed in PG-TO252-3 (DPAK) package with exposed thermal pad (Tab) connected to GND. The package supports high-power dissipation via PCB copper pour and is RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input | High-side connection to unregulated supply; requires local 100 nF decoupling to GND for noise immunity. |
| 2 (GND) | Ground Reference | Common return path for input/output currents and internal bias; must be low-impedance connection to PCB ground plane. |
| 3 (Q) | Regulated Output | Delivers stable 3.3 V; connects to 1 µF ceramic capacitor with ESR ≤5 Ω placed within 3 mm of pin. |
| Tab | Thermal Pad / GND | Exposed metal slug for heat conduction; must be soldered to ≥300 mm² GND copper area for RthJA ≤52 K/W. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 38 µA enables >10-year battery standby in always-on automotive modules without periodic wake-up drain. |
| AEC-Q100 qualified | Grade 0 qualification (-40°C to +150°C) confirms suitability for engine bay and transmission control applications. |
| Extended low-input operation | Regulates down to 3.3 V input-critical for post-buck 5 V rail feeding this LDO during cold-crank events. |
| Single-capacitor stability | Stable with only 1 µF ceramic output cap (no ESR tuning required), simplifying layout and reducing BOM count. |
| Integrated protection | Current limit + thermal shutdown prevent destruction during short-circuit or overheating-no external components needed. |
Applications
| Body Control Module (BCM) | Door Module Electronics |
|---|---|
|
Use Scenario: Powering microcontroller, LIN transceiver, and position sensors in vehicle door latch assembly with direct battery connection. IC Role / Device Role / Timing Role: Primary 3.3 V supply for MCU core and I/O, operating continuously during vehicle sleep mode. Use Value: 38 µA IQ prevents parasitic drain exceeding 100 µA system budget, extending battery life beyond 10 years. |
Use Scenario: Supplying window lift motor controller and anti-pinch sensor interface in driver-side door module. IC Role / Device Role / Timing Role: Regulated 3.3 V rail for analog front-end and motor driver logic, surviving 40 V load dump transients. Use Value: 400 mA output current supports peak motor driver logic loads while 100 mV dropout maintains regulation during 6 V cold-crank. |
| Engine Control Unit (ECU) Subsystem | Automotive Camera Power Rail |
|
Use Scenario: Providing clean 3.3 V to pressure/temperature sensor signal conditioning circuitry adjacent to high-noise ignition drivers. IC Role / Device Role / Timing Role: Local low-noise LDO for analog sensor front-end, isolated from noisy main 5 V domain. Use Value: PG-TO252-3 thermal pad enables mounting on heatsink-equipped PCB zones, maintaining <125°C junction under 400 mA load. |
Use Scenario: Powering image sensor and ISP in rear-view camera module mounted in hot trunk environment. IC Role / Device Role / Timing Role: Final-stage regulator delivering ripple-free 3.3 V to CMOS image sensor pixel array and ADC. Use Value: -40°C to +150°C rating ensures functionality during summer trunk temperatures (>85°C ambient) with full 400 mA load. |
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 |
|---|---|---|---|
| TLF80510TFV33ATMA2 | Same package and pinout; differs only in marking (80510V3 vs 80511V3); identical electrical specs per datasheet Rev. 1.01. | No functional difference; used interchangeably in same automotive designs. | Select when sourcing flexibility or dual-sourcing strategy is required without design change. |
| NCP1117ST33T3G | Higher IQ (6 mA vs 38 µA), lower max current (800 mA), wider dropout (1.2 V @ 800 mA), not AEC-Q100 qualified. | Suitable for non-automotive industrial or consumer applications where battery life and qualification are not critical. | Use only in cost-sensitive non-automotive designs; avoid where <100 µA system IQ or AEC-Q100 compliance is mandatory. |
Compared with TLF80511TFV33ATMA2, TLF80510TFV33ATMA2 offers identical performance and qualification with alternate marking, while NCP1117ST33T3G trades ultra-low IQ and automotive qualification for higher output current and lower cost in non-automotive contexts.
Availability
TLF80511TFV33ATMA2 is available at Aetrix Electronics and suitable for automotive body electronics, engine management subsystems, and ADAS camera power rails requiring stable component supply, AEC-Q100 compliance, and ultra-low quiescent current.
Supply support for TLF80511TFV33ATMA2 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.
This part belongs to the OPTIREG™ Linear family-engineered specifically for automotive power supply resilience, featuring ultra-low IQ, wide input range, and robust thermal protection for under-hood and chassis-mounted ECUs.
FAQ
Is TLF80511TFV33ATMA2 pin-compatible with TLF80511TFV50ATMA2?
Yes-both share identical PG-TO252-3 package, pin assignment (I-GND-Q), and thermal pad layout. Only the output voltage differs (3.3 V vs 5.0 V), so PCB layout and external components remain unchanged when swapping between them in designs requiring different logic rail voltages.
What is the minimum input voltage required to maintain regulation at full 400 mA load?
At 400 mA, the dropout voltage rises to approximately 400 mV (per Figure 13 in datasheet Rev. 1.01). Therefore, minimum input voltage for regulation is 3.3 V + 0.4 V = 3.7 V. Below this, output collapses linearly with input.
Can TLF80511TFV33ATMA2 be used without an input capacitor?
An input capacitor is not required for stability but is strongly recommended: a 100 nF ceramic capacitor placed within 3 mm of the I pin suppresses line noise and mitigates voltage spikes from long traces or switching converters upstream-especially critical in automotive environments with high EMI.
Does the thermal shutdown feature latch off or auto-recover?
Thermal shutdown is non-latching: when junction temperature exceeds 150°C, the output disables; once die temperature falls below ~140°C (typical hysteresis), the regulator automatically resumes normal operation-causing oscillatory behavior if fault persists, so proper heatsinking is essential.
TLF80511TFV33ATMA2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- 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):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.65V @ 250mA
- Current - Output:
- 400mA
- Current - Quiescent (Iq):
- 75 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 (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-TO252-3-11
TLF80511TFV33ATMA2 FAQ
1.How can I place an order for TLF80511TFV33ATMA2 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLF80511TFV33ATMA2 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 TLF80511TFV33ATMA2 reliable?
The price and inventory of TLF80511TFV33ATMA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLF80511TFV33ATMA2 is usually 5 days.
3.What payment methods are accepted for TLF80511TFV33ATMA2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLF80511TFV33ATMA2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLF80511TFV33ATMA2?
TLF80511TFV33ATMA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLF80511TFV33ATMA2 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 TLF80511TFV33ATMA2?
For technical support, including TLF80511TFV33ATMA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLF80511TFV33ATMA2 requirements.
6.How does Aetrix verify that TLF80511TFV33ATMA2 is sourced from the original manufacturer or authorized distributors?
All TLF80511TFV33ATMA2 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 TLF80511TFV33ATMA2 meets industry standards.
7.What is the process for return or replacement of TLF80511TFV33ATMA2?
All TLF80511TFV33ATMA2 units undergo pre-shipment inspection (PSI). If there is an issue with TLF80511TFV33ATMA2, 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 TLF80511TFV33ATMA2 part is unused and in its original packaging.
Return procedure for TLF80511TFV33ATMA2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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