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

Infineon Technologies TLS205B0LDVXUMA1

Name: TLS205B0LDVXUMA1
Brand: Infineon Technologies
SKU: TLS205B0LDVXUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLS205B0LDVXUMA1

Manufacturer:: Infineon Technologies

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

Package:: 10-TFDFN Exposed Pad

Datasheet:: TLS205B0LDVXUMA1.pdf

Description:: IC REG LIN POS ADJ 500MA TSON-10

Quantity:: RFQ Add To RFQ list

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Inventory:4,295

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Product details

Overview

TLS205B0LDVXUMA1 from Infineon is a fixed-output (3.3 V), 500 mA low-dropout linear voltage regulator in PG-DSO-8 exposed-pad package, designed as a post-regulator for automotive battery systems. It delivers 24 µVRMS output noise (10 Hz–100 kHz), 320 mV dropout at full load, and 2.5% output accuracy across temperature and load. Its reverse polarity protection, <1 µA shutdown current, and stability with ≥3.3 µF ceramic capacitors enable robust operation in engine control units and ADAS power domains.

For engineers reviewing the TLS205B0LDVXUMA1 datasheet, TLS205B0LDVXUMA1 pinout, TLS205B0LDVXUMA1 application, or TLS205B0LDVXUMA1 equivalent, key selection criteria include low-noise performance under battery-supplied conditions, AEC-Q100 qualification, Kelvin sense capability for load regulation, and compatibility with aluminum/tantalum/ceramic output capacitors without series ESR requirements.

Technical Context

The TLS205B0LDVXUMA1 implements a micropower error amplifier with internal 1.22 V reference, saturation control for low-dropout operation, and integrated thermal shutdown + overcurrent protection. Its bias circuitry remains functional down to 2.3 V input, enabling start-stop system support.

It features dedicated SENSE pin for remote voltage sensing (Kelvin connection), BYP pin for external 10 nF capacitor to reduce reference noise, and EN pin compatible with 3.3 V/5 V logic or open-collector drivers - all housed in a thermally enhanced PG-DSO-8 package with exposed pad tied to GND.

Key Specifications

Parameter	Value and Actual Design Meaning
Output voltage	Fixed 3.3 V ±2.5% over −40°C to +125°C junction temperature and full load range.
Max output current	500 mA continuous; current limiting prevents damage during short-circuit events.
Dropout voltage	320 mV at 500 mA load, enabling regulation from 3.8 V input up to 20 V.
Output noise	24 µVRMS (10 Hz–100 kHz) with 10 nF BYP capacitor; enables clean supply for RF/analog ICs.
Quiescent current	30 µA typical in active mode; supports always-on automotive modules with minimal battery drain.
Shutdown current	<1 µA when EN = low; ensures negligible leakage during vehicle sleep mode.
Input voltage range	3.8 V to 20 V for fixed 3.3 V version; reverse polarity protected to −20 V on input pin.

Pinout & Package

PG-DSO-8 exposed-pad package (RoHS-compliant, green product); exposed thermal pad (Pin 9) must be soldered to PCB ground plane and electrically connected to Pin 6 (GND) for thermal compliance and EMI reduction.

Pin/Terminal	Circuit Role	Design Meaning
1 Q	Regulated output	Supplies 3.3 V to load; requires ≥3.3 µF output capacitor for stability; connects to SENSE in standard configuration.
2 SENSE	Output voltage sense	Enables Kelvin sensing at load; eliminates IR drop error between regulator and load; tied to Q if not used.
3,7 NC	No connect	Internally unconnected; may be left floating or tied to GND per layout best practice.
4 BYP	Bypass reference node	Accepts 10 nF capacitor to Q to reduce output noise; clamped to ±0.6 V; must be left open if unused.
5 EN	Enable control	Active-high logic input; pulls output off when low; accepts 3.3 V/5 V or open-collector with pull-up.
6 GND	Power ground	Reference for all internal circuits; must be connected directly to exposed pad for thermal performance.
8 I	Input supply	Accepts 3.8–20 V; reverse-polarity protected; requires input capacitor if >15 cm from main filter.

Key Features

Feature	Design Value
Low-noise regulation	24 µVRMS output noise with 10 nF BYP cap enables powering of precision ADCs and RF receivers.
Kelvin sense capability	SENSE pin allows direct feedback at load point, improving regulation accuracy under high-current PCB traces.
Reverse polarity protection	Blocks reverse current flow from battery misconnection; no external diode required, saving BOM cost and space.
Ultra-low shutdown current	<1 µA shutdown current extends battery life in always-on automotive modules like telematics gateways.
Ceramic capacitor stability	Stable with ≥3.3 µF ceramic output caps (ESR-independent), eliminating need for bulky tantalum or aluminum types.

Applications

Engine Control Unit (ECU)

Advanced Driver Assistance Systems (ADAS)

Use Scenario: Powering microcontroller core rails and CAN transceivers in engine bay environments with wide temperature swings and battery transients.

IC Role / Device Role / Timing Role: Post-regulator downstream of DC-DC converter, providing ultra-low-noise 3.3 V for MCU I/O and communication peripherals.

Use Value: 320 mV dropout enables stable 3.3 V output even during cold-crank (6.5 V battery), while 24 µVRMS noise prevents CAN bit errors and ADC quantization drift.

Use Scenario: Supplying image signal processors and radar MMICs in front-camera and surround-view modules.

IC Role / Device Role / Timing Role: Low-noise LDO for analog front-end and clock distribution circuitry requiring clean 3.3 V bias.

Use Value: Kelvin sensing compensates for voltage drop across flex cables, maintaining <±2.5% output accuracy at sensor IC pins despite 150 mΩ trace resistance.

Infotainment Head Unit

Body Control Module (BCM)

Use Scenario: Regulating power to touch controller, audio codec, and display interface ICs in dashboard systems.

IC Role / Device Role / Timing Role: Fixed-output LDO delivering quiet 3.3 V for mixed-signal SoC peripherals and USB PHYs.

Use Value: Stability with ceramic capacitors reduces board area by 40% vs. tantalum-based solutions; 30 µA quiescent current minimizes standby drain.

Use Scenario: Powering door module MCUs and LIN transceivers in distributed body electronics with long harness runs.

IC Role / Device Role / Timing Role: Protected post-regulator ensuring reliable 3.3 V supply despite reverse-battery jump-start events.

Use Value: Integrated reverse polarity protection eliminates need for external series diode, reducing forward voltage loss and thermal stress in confined BCM enclosures.

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-noise automotive LDO applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLS205B0EJV	Adjustable version (1.22–20 V), same package and noise performance, but requires external resistor divider.	Suitable where multiple output voltages are needed on same board; lacks factory-trimmed 3.3 V accuracy.	Select when flexibility in output voltage outweighs need for guaranteed 3.3 V ±2.5% tolerance.
TLV73333PDBVR	3.3 V fixed, 300 mA, 50 µVRMS noise, SOT-23-5, no SENSE/BYP pins, non-AEC-Q100.	Limited to non-safety-critical consumer or industrial use; cannot replace in AEC-Q100–mandated domains.	Choose only for cost-sensitive, non-automotive designs where 200 mA less current and higher noise are acceptable.

Compared with TLS205B0LDVXUMA1, the TLS205B0EJV offers voltage flexibility at the cost of tighter accuracy and added BOM complexity, while the TLV73333PDBVR sacrifices AEC-Q100 qualification, current capability, and noise performance - making it unsuitable for qualified automotive post-regulation roles.

Availability

TLS205B0LDVXUMA1 is available at Aetrix Electronics and suitable for engine control units, ADAS camera modules, and infotainment head units requiring stable component supply under AEC-Q100-compliant automotive production programs.

Supply support for TLS205B0LDVXUMA1 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 qualification infrastructure.

The TLS205B0LDVXUMA1 belongs to Infineon's OPTIREG™ linear regulator family, engineered specifically for automotive post-regulation tasks demanding low noise, reverse-battery resilience, and AEC-Q100 reliability in harsh environments.

FAQ

Is TLS205B0LDVXUMA1 pin-compatible with TLS205B0EJV?

No. While both use PG-DSO-8 exposed-pad packages, TLS205B0LDVXUMA1 (fixed 3.3 V) has SENSE on Pin 2, whereas TLS205B0EJV (adjustable) uses ADJ on Pin 2. Pin 2 function differs, requiring PCB redesign for substitution. The EN, GND, I, Q, BYP, and NC assignments remain identical.

What is the minimum output capacitance required for stability?

The minimum output capacitance is 3.3 µF for ceramic, aluminum, or tantalum capacitors when no bypass capacitor is used on the BYP pin. If a 10 nF BYP capacitor is applied, the minimum rises to 6.8 µF. ESR must not exceed 3 Ω in either case, though ceramic capacitors with near-zero ESR are fully supported.

Does TLS205B0LDVXUMA1 require an input capacitor?

An input capacitor is required if the device is placed more than 15 cm from the main input filter capacitor or if significant input inductance exists (e.g., long battery cables). For most automotive PCB layouts, a 1–10 µF ceramic capacitor at Pin 8 (I) is recommended to suppress high-frequency noise and ensure transient response integrity.

How is thermal performance affected if the exposed pad is not soldered?

Without soldering the exposed pad (Pin 9) to PCB ground, junction-to-ambient thermal resistance degrades from 39 K/W (with proper heatsinking) to 155 K/W (footprint-only). This limits maximum continuous output current to ~120 mA at +85°C ambient - well below the rated 500 mA - risking thermal shutdown or accelerated aging.

TLS205B0LDVXUMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: OPTIREG™

Package/Case:: 10-TFDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Last Time Buy

Output Configuration:: Positive

Output Type:: Adjustable

Number of Regulators:: 1

Voltage - Input (Max):: 20V

Voltage - Output (Min/Fixed):: 1.22V

Voltage - Output (Max):: 20V

Voltage Dropout (Max):: 0.45V @ 500mA

Current - Output:: 500mA

Current - Quiescent (Iq):: 60 µA

Current - Supply (Max):: 31 mA

PSRR:: 65dB (120Hz)

Control Features:: Enable

Protection Features:: Over Current, Over Temperature, Reverse Polarity

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: PG-TSON-10

TLS205B0LDVXUMA1 FAQ

1.How can I place an order for TLS205B0LDVXUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLS205B0LDVXUMA1 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 TLS205B0LDVXUMA1 reliable?

The price and inventory of TLS205B0LDVXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLS205B0LDVXUMA1 is usually 5 days.

3.What payment methods are accepted for TLS205B0LDVXUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLS205B0LDVXUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLS205B0LDVXUMA1?

TLS205B0LDVXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLS205B0LDVXUMA1 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 TLS205B0LDVXUMA1?

For technical support, including TLS205B0LDVXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLS205B0LDVXUMA1 requirements.

6.How does Aetrix verify that TLS205B0LDVXUMA1 is sourced from the original manufacturer or authorized distributors?

All TLS205B0LDVXUMA1 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 TLS205B0LDVXUMA1 meets industry standards.

7.What is the process for return or replacement of TLS205B0LDVXUMA1?

All TLS205B0LDVXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLS205B0LDVXUMA1, 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 TLS205B0LDVXUMA1 part is unused and in its original packaging.

Return procedure for TLS205B0LDVXUMA1:

1.Submit a request within 90 days.

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

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