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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Infineon Technologies TLS850D0TAV50ATMA1

Name: TLS850D0TAV50ATMA1
Brand: Infineon Technologies
SKU: TLS850D0TAV50ATMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLS850D0TAV50ATMA1

Manufacturer:: Infineon Technologies

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: TO-263-8, D2PAK (7 Leads + Tab), TO-263CA

Datasheet:: TLS850D0TAV50ATMA1.pdf

Description:: IC REG LINEAR 5V 500MA TO263-7-1

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TLS850D0TAV50ATMA1 from Infineon Technologies is a fixed-output 5 V, 500 mA automotive-grade low-dropout linear voltage regulator in PG-TO263-7 package. It operates from 3.0 V to 40 V input, delivers ±2 % output accuracy, features 70 mV typical dropout at 100 mA, and integrates enable, programmable reset delay (8.5 ms / 16.5 ms), and adjustable reset threshold down to 2.50 V - designed for battery-permanent automotive ECUs requiring cranking resilience.

For engineers reviewing the TLS850D0TAV50ATMA1 datasheet, TLS850D0TAV50ATMA1 pinout, TLS850D0TAV50ATMA1 application, or TLS850D0TAV50ATMA1 equivalent, key selection criteria include input voltage range during cold-crank, quiescent current (40 µA typ.), reset timing flexibility, ceramic capacitor stability (1 µF min), and AEC-Q100 qualification for under-hood power management.

Technical Context

The TLS850D0TAV50ATMA1 implements a high-stability control loop optimized for fast transient response with only 1 µF ceramic output capacitance. Its bandgap reference and internal current-limiting circuitry support operation across -40 °C to +150 °C junction temperature while maintaining regulation down to 3.0 V input - enabling functionality during automotive cranking events.

Reset supervision includes undervoltage detection with externally adjustable threshold via RADJ pin and dual-delay configuration (via DT pin) for power-on sequencing. Enable logic features an integrated pull-down resistor, allowing direct microcontroller GPIO control without external biasing.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 5.0 V ±2 % - ensures stable MCU/core logic supply under load and temperature variation
Max Output Current	500 mA - supports multiple downstream ICs in body control modules without external pass transistor
Dropout Voltage	70 mV typ. @ 100 mA - enables regulation down to 5.07 V input, critical for 12 V system cranking
Quiescent Current	40 µA typ. - minimizes battery drain in always-on vehicle networks (e.g., CAN wake-up circuits)
Input Voltage Range	3.0 V to 40 V - covers cold-crank (≤6 V), normal operation (9–16 V), and load-dump transients (up to 40 V)
Reset Delay Options	8.5 ms or 16.5 ms - selectable via DT pin grounding, enabling precise power-on sequencing with microcontrollers
Reset Threshold Range	Adjustable down to 2.50 V via RADJ pin - allows custom brown-out detection for system-specific voltage margins

Pinout & Package

Package: PG-TO263-7 (D²PAK-7) with exposed heat slug electrically connected to GND - requires PCB copper pour for thermal dissipation and EMI shielding.

Pin/Terminal	Circuit Role	Design Meaning
1 (I)	Input Supply	Accepts 3.0–40 V; requires local 100 nF ceramic decoupling to GND for noise immunity
2 (EN)	Enable Control	Active-high logic with internal pull-down; compatible with 3.3 V/5 V MCU GPIO without level shift
3 (RO)	Open-Drain Reset Output	Signals V_Q undervoltage; requires external pull-up to monitored rail or V_CC
4 (GND)	Ground Reference	Primary return path; connects to heat slug - must be low-impedance plane for thermal and noise performance
5 (RADJ)	Reset Threshold Adjustment	Voltage divider input to set custom reset point; 0 V = default ~4.65 V threshold
6 (DT)	Reset Delay Selection	GND = 8.5 ms delay; Q = 16.5 ms delay - no external components needed
7 (Q)	Regulated Output	5.0 V supply output; requires ≥1 µF ceramic capacitor with ≤100 Ω ESR at device pins

Key Features

Feature	Design Value
Stable with 1 µF Ceramic Capacitor	Eliminates need for large electrolytic or tantalum output caps - reduces board space and improves reliability
Programmable Reset Delay	Two factory-set delays (8.5 ms / 16.5 ms) selected by single DT pin connection - simplifies BOM and layout
Adjustable Reset Threshold	External voltage divider on RADJ pin sets threshold as low as 2.50 V - enables custom brown-out behavior
Integrated Protection	Current limiting and overtemperature shutdown prevent damage during short-circuit or thermal overload - no external protection required
AEC-Q100 Qualified	Qualified per Grade 1 (-40 °C to +125 °C ambient) - validated for automotive power rails including engine bay locations

Applications

Body Control Module (BCM)

Advanced Driver Assistance Systems (ADAS) Camera ECU

Use Scenario: Powering microcontroller, CAN transceiver, and sensor interface in door module or lighting controller.

IC Role / Device Role / Timing Role: Primary 5 V LDO supplying core logic and communication peripherals with cranking resilience.

Use Value: 3.0 V minimum input enables uninterrupted operation during engine start; 40 µA quiescent current extends battery life in sleep mode.

Use Scenario: Regulating 5 V supply for image signal processor and SerDes interface in rear-view camera ECU.

IC Role / Device Role / Timing Role: Stable 5 V source with programmable reset delay ensuring clean power-on sequence before ISP initialization.

Use Value: 8.5 ms reset delay aligns with camera boot timing; ceramic-capacitor compatibility reduces EMI in high-speed video paths.

Engine Control Unit (ECU) Subsystem

Automotive Gateway Module

Use Scenario: Providing auxiliary 5 V rail for diagnostic interface, EEPROM, and watchdog circuit in main ECU.

IC Role / Device Role / Timing Role: Secondary regulated supply with independent reset supervision for fault-isolated subsystem monitoring.

Use Value: Adjustable reset threshold (down to 2.50 V) allows tailored brown-out response for non-critical peripherals during voltage sag.

Use Scenario: Powering 5 V logic for multi-protocol gateway (CAN FD, LIN, Ethernet PHY) in vehicle central domain controller.

IC Role / Device Role / Timing Role: Always-on LDO with ultra-low I_Q supporting wake-on-CAN functionality and fast reset assertion.

Use Value: 40 µA quiescent current meets OEM <100 µA total standby budget; open-drain RO pin interfaces directly with gateway MCU reset input.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 5 V automotive LDO applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV73350PDBVR	300 mA max output, 500 mV dropout @ 300 mA, no reset or enable, SOT-23-5 package	Lacks reset supervision and enable; unsuitable for safety-critical or sequenced systems	Select only for cost-sensitive, non-automotive, low-current applications without sequencing needs
TPS7B8750QKVURQ1	500 mA, 300 mV dropout @ 500 mA, integrated watchdog, 1.5% accuracy, VQFN-20 package	Higher accuracy and watchdog, but larger footprint and higher I_Q (65 µA)	Prefer when tighter regulation or functional safety monitoring is required; avoid if thermal constraints favor D²PAK

Compared with TLV73350PDBVR and TPS7B8750QKVURQ1, TLS850D0TAV50ATMA1 uniquely balances cranking capability (3.0 V min input), ultra-low I_Q, integrated reset flexibility, and thermally robust D²PAK packaging - making it optimal for space-constrained, high-reliability automotive modules where both electrical and thermal margins are critical.

Availability

TLS850D0TAV50ATMA1 is available at Aetrix Electronics and suitable for body control modules, ADAS camera ECUs, engine control unit subsystems, and automotive gateway modules requiring stable component supply across extended temperature and voltage stress conditions.

Supply support for TLS850D0TAV50ATMA1 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 manufacturing and automotive qualification infrastructure.

This device belongs to Infineon's TLS850D series of automotive LDOs, engineered specifically for permanent-battery-connected systems needing cranking resilience, ultra-low quiescent current, and integrated power-good supervision in harsh environments.

FAQ

What is the minimum input voltage required for regulation at full 500 mA load?

The TLS850D0TAV50ATMA1 maintains regulation down to 3.0 V input only in extended operating mode (VI,ext), where output voltage drops linearly with input below V_Q,nom + V_dr. At full 500 mA, minimum input is 5.3 V (5.0 V + 300 mV max dropout). Below that, current limit activates to protect the device.

Can the reset function be disabled entirely?

Yes. The reset output (RO) is open-drain and can be left unconnected if unused. To disable reset supervision, leave RADJ floating or tie it to GND (default threshold), and do not assert EN until after system power stabilizes - no active reset assertion occurs unless V_Q falls below threshold.

Is the heat slug electrically isolated or connected internally?

The heat slug is internally connected to GND and must be soldered to a PCB ground plane. It is not isolated - using it as a thermal pad without GND connection violates absolute maximum ratings and compromises thermal performance and ESD robustness.

Does this part support reverse polarity protection externally?

No internal reverse polarity protection is provided. The datasheet recommends external protection - typically a series Schottky diode on the input or a parallel TVS with reverse-blocking configuration - to prevent damage from battery misconnection, as VI < –0.3 V violates absolute maximum rating.

TLS850D0TAV50ATMA1 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:: Last Time Buy

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):: 0.425V @ 250mA

Current - Output:: 500mA

Current - Quiescent (Iq):: 5 µA

Current - Supply (Max):: 82 µA

PSRR:: 59dB (100Hz)

Control Features:: Delay, Enable, Reset

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-TO263-7-1

TLS850D0TAV50ATMA1 FAQ

1.How can I place an order for TLS850D0TAV50ATMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLS850D0TAV50ATMA1 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 TLS850D0TAV50ATMA1 reliable?

The price and inventory of TLS850D0TAV50ATMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLS850D0TAV50ATMA1 is usually 5 days.

3.What payment methods are accepted for TLS850D0TAV50ATMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLS850D0TAV50ATMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLS850D0TAV50ATMA1?

TLS850D0TAV50ATMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLS850D0TAV50ATMA1 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 TLS850D0TAV50ATMA1?

For technical support, including TLS850D0TAV50ATMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLS850D0TAV50ATMA1 requirements.

6.How does Aetrix verify that TLS850D0TAV50ATMA1 is sourced from the original manufacturer or authorized distributors?

All TLS850D0TAV50ATMA1 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 TLS850D0TAV50ATMA1 meets industry standards.

7.What is the process for return or replacement of TLS850D0TAV50ATMA1?

All TLS850D0TAV50ATMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLS850D0TAV50ATMA1, 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 TLS850D0TAV50ATMA1 part is unused and in its original packaging.

Return procedure for TLS850D0TAV50ATMA1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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