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Infineon Technologies TLS850F2TAV50ATMA1
- Part No.:
- TLS850F2TAV50ATMA1
- Manufacturer:
- Infineon Technologies
- Package:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Datasheet:
-
TLS850F2TAV50ATMA1.pdf
- Description:
- IC REG LINEAR 5V 500MA TO263-7-1
- Quantity:
- Payment:
- Shipping:
Inventory:997
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Product details
Overview
TLS850F2TAV50ATMA1 from Infineon is a high-performance automotive-grade low-dropout linear voltage regulator in PG-TO263-7 package, delivering fixed 5 V output at up to 500 mA with ±2% accuracy, 70 mV typical dropout at 100 mA, and 40 µA quiescent current-designed for microcontroller supply in safety-critical powertrain and EPS systems.
For engineers reviewing the TLS850F2TAV50ATMA1 datasheet, TLS850F2TAV50ATMA1 pinout, TLS850F2TAV50ATMA1 application, or TLS850F2TAV50ATMA1 equivalent, key selection criteria include cranking-mode operation down to 3.0 V input, integrated watchdog (96 ms), adjustable reset threshold (down to 2.50 V), delayed power-on reset (16.5 ms), and AEC-Q100 qualification for automotive ECU use.
Technical Context
The TLS850F2TAV50ATMA1 implements a fast-stabilizing control loop optimized for ceramic output capacitors as low as 1 µF, enabling compact layout while maintaining stability under dynamic load transients. Its extended 3.0–40 V input range supports battery-connected automotive systems through cold-crank conditions.
Integrated system-level supervision includes undervoltage reset with programmable threshold via RADJ pin, open-collector RO/WO output shared between reset and watchdog functions, and WI-triggered watchdog monitoring with fixed 96 ms timeout-enabling coordinated MCU health management without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±2% - ensures stable MCU core and I/O rail within automotive ASIL-B compatible tolerance bands. |
| Max Output Current | 500 mA - sufficient to power modern 32-bit automotive MCUs and associated peripherals without external boost stages. |
| Dropout Voltage | 70 mV typ. @ 100 mA - enables regulation during engine cranking when battery dips to ~6 V while sustaining 5 V output. |
| Quiescent Current | 40 µA typ. - minimizes standby drain on vehicle battery during ignition-off periods, critical for always-on ECU modules. |
| Reset Delay | 16.5 ms power-on delay - prevents premature MCU release before power rail stabilization and clock lock. |
| Watchdog Timeout | 96 ms fixed interval - provides deterministic fault detection timing aligned with automotive diagnostic cycle requirements. |
| Input Range | 3.0 V to 40 V - covers full automotive battery operating envelope including load dump transients and cold-crank dips. |
| Reset Threshold | Adjustable down to 2.50 V via RADJ pin - allows precise matching to MCU VDD monitor thresholds across temperature and process variation. |
Pinout & Package
Package: PG-TO263-7 (D²PAK-7) with exposed thermal slug electrically connected to GND; designed for high-power dissipation in constrained automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input Supply | Battery-connected input; requires local 100 nF ceramic decoupling to suppress line impedance effects. |
| 2 (EN) | Enable Control | Active-high logic input with internal pull-down; enables full regulator operation only when driven ≥2.0 V. |
| 3 (RO/WO) | Reset/Watchdog Output | Open-collector output shared by reset and watchdog; pulled up externally or internally to Q for active-low assertion. |
| 4 (GND) | Ground Reference | Main signal and power return; must be connected to thermal slug for optimal thermal performance. |
| 5 (RADJ) | Reset Threshold Adjustment | Analog input pin setting reset trip point; grounded for default 4.65 V threshold or biased via resistor divider for custom values down to 2.50 V. |
| 6 (WI) | Watchdog Input | Edge-triggered watchdog feed input; requires periodic rising edge (≤96 ms interval) to prevent RO/WO assertion. |
| 7 (Q) | Regulated Output | 5 V regulated supply output; requires ≥1 µF ceramic capacitor with ≤100 Ω ESR for loop stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typ. enables >10-year battery standby life in always-on automotive modules without compromising wake-up responsiveness. |
| Stability with 1 µF ceramic capacitor | Eliminates need for bulky tantalum or aluminum electrolytic output caps-reducing board area, cost, and failure risk in high-vibration environments. |
| Integrated watchdog with fixed timing | 96 ms timeout matches standard automotive diagnostic timing budgets, removing external timer ICs and associated BOM complexity. |
| Adjustable reset threshold | 2.50 V to 4.65 V range via RADJ pin allows precise alignment with target MCU's brown-out detection level across voltage/temp corners. |
| Thermal shutdown & current limiting | Protects against sustained short-circuit or overtemperature events without latch-up-ensuring safe recovery after fault clearance. |
Applications
| Dashboard Cluster Power | EPS Microcontroller Supply |
|---|---|
Use Scenario: Powering LCD driver ICs, CAN transceivers, and 32-bit cluster MCU in instrument panels requiring uninterrupted operation during start-stop cycles. IC Role / Device Role / Timing Role: Primary 5 V LDO supplying safety-critical display and communication subsystems with cranking-mode support and reset coordination. Use Value: 3.0 V minimum input enables clean 5 V output even at 6 V battery during cranking; 16.5 ms reset delay prevents display flicker during power ramp-up. | Use Scenario: Providing regulated 5 V to steering angle sensor MCU and motor gate driver logic in electric power steering ECUs. IC Role / Device Role / Timing Role: Safety-relevant power rail with integrated watchdog and undervoltage reset to meet ISO 26262 ASIL-B requirements. Use Value: Adjustable reset threshold (2.50–4.65 V) matches MCU brown-out spec; 96 ms watchdog enforces deterministic fault response per automotive diagnostic standards. |
| Engine Control Unit (ECU) | Body Control Module (BCM) |
Use Scenario: Supplying 5 V to engine management MCU, knock sensor interface, and fuel injector drivers in harsh under-hood environments. IC Role / Device Role / Timing Role: High-reliability LDO with AEC-Q100 Grade 1 qualification, thermal shutdown, and load dump immunity up to 40 V. Use Value: 70 mV dropout at 100 mA maintains regulation during transient battery sags; PG-TO263-7 package enables direct heatsink mounting for 150 °C junction operation. | Use Scenario: Powering door module MCUs, window lift controllers, and LIN transceivers in body electronics with low quiescent current demands. IC Role / Device Role / Timing Role: Always-on 5 V regulator supporting sleep mode with 40 µA IQ and fast wake-up via EN pin control. Use Value: Enables <10 µA system sleep current when combined with MCU-controlled EN gating; RO/WO pin simplifies centralized watchdog/reset signaling across multiple submodules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV70750PDRVR | Lower max current (300 mA), no watchdog or adjustable reset; 2.5–5.5 V input range. | Limited to non-safety, non-cranking applications like infotainment accessories. | Select only if system lacks watchdog requirement and operates above 5.5 V nominal battery. |
| MAX1725EUT+T | Fixed 5 V, 500 mA, but no integrated watchdog/reset; ±3% accuracy; 2.5–16 V input range. | Suitable for non-automotive industrial controls where AEC-Q100 and cranking support are unnecessary. | Choose when cost sensitivity outweighs functional integration and automotive qualification needs. |
Compared with TLV70750PDRVR and MAX1725EUT+T, TLS850F2TAV50ATMA1 uniquely combines AEC-Q100 qualification, cranking-mode operation (3.0 V min), integrated watchdog + adjustable reset, and 500 mA capability in a thermally robust D²PAK package-making it the only option qualified for ASIL-B power domains in powertrain and chassis ECUs.
Availability
TLS850F2TAV50ATMA1 is available at Aetrix Electronics and suitable for automotive dashboard clusters, electric power steering (EPS) systems, and engine control units (ECUs) requiring stable component supply under AEC-Q100 compliance, cranking-mode operation, and integrated safety supervision.
Supply support for TLS850F2TAV50ATMA1 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, and industrial control ICs, with leadership in high-reliability analog and mixed-signal solutions.
The OPTIREG™ linear product line delivers automotive-qualified LDOs and DC-DC regulators engineered specifically for safety-critical ECU power rails-emphasizing cranking resilience, integrated supervision, and AEC-Q100 reliability.
FAQ
What is the minimum input voltage required for regulation during cold-crank conditions?
The TLS850F2TAV50ATMA1 maintains regulation down to 3.0 V input, enabling stable 5 V output even when battery voltage drops to 6 V during engine cranking. This extended operating range is validated per AEC-Q100 and specified in the functional range table (VI,ext = 3.0–40 V).
How does the adjustable reset threshold function via the RADJ pin?
The RADJ pin accepts an external voltage divider to set the reset trip point from 2.50 V to 4.65 V. Grounding RADJ selects the default 4.65 V threshold; applying a bias voltage between 0 V and 4.65 V scales the threshold linearly, allowing precise matching to MCU brown-out detection levels.
Can the RO/WO pin serve both reset and watchdog functions simultaneously?
Yes-the RO/WO pin is a shared open-collector output that asserts low for either undervoltage reset or watchdog timeout. The same signal can drive MCU reset input and watchdog fault indicator, reducing pin count and simplifying system-level fault signaling without external logic.
What thermal performance can be expected on a standard 1s0p PCB with heatsinking?
With a 600 mm² copper heatsink area on a single-layer FR4 board, the TLS850F2TAV50ATMA1 achieves RthJA = 34 K/W. At 500 mA output and 12 V input, power dissipation is ~3.5 W, resulting in ~120 °C junction rise above ambient-well within its 150 °C max rating when ambient stays below 30 °C.
TLS850F2TAV50ATMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- 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):
- 0.175V @ 250mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 80 µA
- Current - Supply (Max):
- 82 µA
- PSRR:
- 59dB (100Hz)
- Control Features:
- Enable, Power Fail
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-TO263-7-1
TLS850F2TAV50ATMA1 FAQ
1.How can I place an order for TLS850F2TAV50ATMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLS850F2TAV50ATMA1 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 TLS850F2TAV50ATMA1 reliable?
The price and inventory of TLS850F2TAV50ATMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLS850F2TAV50ATMA1 is usually 5 days.
3.What payment methods are accepted for TLS850F2TAV50ATMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLS850F2TAV50ATMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLS850F2TAV50ATMA1?
TLS850F2TAV50ATMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLS850F2TAV50ATMA1 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 TLS850F2TAV50ATMA1?
For technical support, including TLS850F2TAV50ATMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLS850F2TAV50ATMA1 requirements.
6.How does Aetrix verify that TLS850F2TAV50ATMA1 is sourced from the original manufacturer or authorized distributors?
All TLS850F2TAV50ATMA1 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 TLS850F2TAV50ATMA1 meets industry standards.
7.What is the process for return or replacement of TLS850F2TAV50ATMA1?
All TLS850F2TAV50ATMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLS850F2TAV50ATMA1, 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 TLS850F2TAV50ATMA1 part is unused and in its original packaging.
Return procedure for TLS850F2TAV50ATMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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