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

Infineon Technologies TLS208D1LDVXUMA1

Name: TLS208D1LDVXUMA1
Brand: Infineon Technologies
SKU: TLS208D1LDVXUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLS208D1LDVXUMA1

Manufacturer:: Infineon Technologies

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

Package:: 10-TFDFN Exposed Pad

Datasheet:: TLS208D1LDVXUMA1.pdf

Description:: IC REG LIN POS ADJ 800MA TSON-10

Quantity:: RFQ Add To RFQ list

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Inventory:1,960

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Product details

Overview

TLS208D1LDVXUMA1 from Infineon Technologies is an AEC-Q100 qualified linear voltage post regulator for automotive systems, delivering 3.3 V fixed output at up to 800 mA with ±2 % accuracy, 400 mV typical dropout at 400 mA, and operation across 2.7–18 V input range. It integrates enable control, adjustable undervoltage reset, overtemperature shutdown, and current limiting - deployed as a secondary regulator after DC-DC converters in engine control units and ADAS domain controllers.

For engineers reviewing the TLS208D1LDVXUMA1 datasheet, TLS208D1LDVXUMA1 pinout, TLS208D1LDVXUMA1 application, or TLS208D1LDVXUMA1 equivalent, key selection criteria include its PG-TSON10 package thermal performance (R_thJA = 57 K/W on 2s2p board), reset threshold adjustability via external resistor divider, PSRR of 62 dB at 10 kHz, and guaranteed stability with 1 µF output capacitor and ≤10 Ω ESR.

Technical Context

The TLS208D1LDVXUMA1 implements a bandgap-referenced linear regulation architecture with internal current-limiting driver and thermal shutdown circuitry. Its reset function uses an open-collector RO output with externally adjustable threshold via RADJ pin connected to a Q-to-GND voltage divider.

Enable logic is active-high with TTL/CMOS-compatible EN input; the device enters ultra-low quiescent current mode (90 µA typ.) when disabled. The PG-TSON10 package features an exposed pad for thermal dissipation and supports operation from −40 °C to +150 °C junction temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 3.3 V ±2 % - ensures stable MCU core supply under load transients and battery voltage variation.
Max Output Current	800 mA - supports multi-rail SoC power domains without external boost or parallel regulators.
Dropout Voltage	400 mV typ. at 400 mA - enables regulation down to 3.7 V input, critical for cold-crank automotive scenarios.
PSRR	62 dB typ. at 10 kHz - suppresses switching noise from upstream DC-DC converters feeding sensitive analog subsystems.
Quiescent Current	90 µA typ. - minimizes standby power loss in always-on vehicle networks (e.g., CAN wake-up circuits).
Operating Input Range	2.7 V to 18 V - accommodates full automotive battery range including load dump (up to 18 V) and cranking dips (down to 2.7 V).
Reset Threshold	Adjustable via external resistor divider on RADJ - allows precise brown-out detection aligned to downstream IC requirements.

Pinout & Package

Package: PG-TSON10 (3 mm × 3 mm, 0.5 mm pitch, exposed thermal pad). Designed for high-power-density automotive PCB layouts with low thermal resistance (R_thJC = 9 K/W).

Pin/Terminal	Circuit Role	Design Meaning
1 I	Input Supply	Primary VIN connection; requires 220 nF local decoupling to suppress line impedance effects.
2 N.C.	No Connect	Internally unconnected; must remain floating or grounded per layout guidelines.
3 GND	Ground Reference	Main return path; low-impedance PCB tie to thermal pad and system ground plane required.
4 N.C.	No Connect	Internally unconnected; no routing or soldering recommended.
5 EN	Enable Control	Active-high digital input; tied to VIN for always-on operation or driven by microcontroller GPIO.
6 RO	Reset Open-Drain Output	Signals undervoltage condition to host MCU; requires external pull-up resistor (e.g., 10 kΩ to 3.3 V).
7 N.C.	No Connect	Internally unconnected; leave unpopulated.
8 RADJ	Reset Threshold Adjust	Connects to voltage divider between Q and GND to set custom reset point (e.g., 2.9 V for 3.3 V rail).
9 ADJ/FB	Feedback Input	For fixed-output version: directly connected to Q; establishes regulated 3.3 V output via internal reference.
10 Q	Regulated Output	Delivers stabilized 3.3 V; requires ≥1 µF ceramic capacitor with ≤10 Ω ESR for loop stability.
EP	Exposed Thermal Pad	Mandatory connection to PCB copper pour and GND for thermal management and EMI reduction.

Key Features

Feature	Design Value
AEC-Q100 Grade 1 qualification	Validated for −40 °C to +125 °C ambient operation in safety-critical automotive ECUs.
Adjustable reset threshold	Enables system-level brown-out coordination across multiple voltage rails using single external resistor pair.
Integrated overtemperature shutdown	Halts output conduction at T_j ≥ 150 °C and auto-recovers upon cooling - eliminates need for external thermal monitoring.
Low-noise linear regulation	62 dB PSRR at 10 kHz and <10 µV_RMS output noise ensure clean supply for ADCs, sensors, and RF receivers.
Robust fault protection	Current limiting + thermal shutdown + short-circuit immunity prevent latch-up or destruction during wiring faults or ESD events.

Applications

Engine Control Unit (ECU)

Advanced Driver Assistance Systems (ADAS)

Use Scenario: Powering 3.3 V microcontroller core and CAN transceiver in gasoline/diesel engine management modules.

IC Role / Device Role / Timing Role: Post-regulator supplying clean, fault-tolerant voltage after primary buck converter; reset signal synchronizes MCU boot on battery recovery.

Use Value: Maintains regulation during cold-crank (2.7 V input) and load dump (18 V input); ±2 % accuracy prevents MCU brown-out resets.

Use Scenario: Providing stable 3.3 V bias to radar sensor signal chain and vision processor I/O banks.

IC Role / Device Role / Timing Role: Secondary LDO ensuring low-noise analog supply for high-resolution ADCs and clock buffers in camera/radar fusion units.

Use Value: 62 dB PSRR suppresses switching noise from adjacent DC-DC converters, preserving SNR in millimeter-wave radar receivers.

Body Control Module (BCM)

Infotainment Head Unit

Use Scenario: Regulating 3.3 V for LIN transceivers, door module MCUs, and interior lighting drivers.

IC Role / Device Role / Timing Role: Always-on LDO with 90 µA quiescent current enabling low-power sleep modes while maintaining wake-up capability.

Use Value: Ultra-low IQ extends battery life during vehicle park mode; reset output triggers safe state entry on supply sag.

Use Scenario: Delivering 3.3 V to touch controller, display interface, and audio codec in central infotainment systems.

IC Role / Device Role / Timing Role: Fixed-output LDO decoupling noisy digital domains from sensitive analog audio paths.

Use Value: 10 Ω max ESR requirement ensures compatibility with low-ESR polymer capacitors for ripple suppression in high-current display backlight drivers.

Equivalent & Alternatives

The following parts are listed as comparable options for similar linear post-regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV73333PDBVR	300 mA max output, 250 mV dropout at 300 mA, no reset or enable functions.	Lacks integrated reset and enable; requires external supervisor IC for brown-out detection.	Select only for non-automotive, low-current applications where fault coverage is handled externally.
TPS7B8733QKVURQ1	500 mA max output, 300 mV dropout at 500 mA, integrated watchdog timer and windowed reset.	Includes enhanced diagnostics (watchdog timeout, windowed reset) but higher BOM cost and larger SO PowerPAD package.	Prefer when ASIL-B functional safety compliance is required beyond basic reset functionality.

Compared with TLV73333PDBVR and TPS7B8733QKVURQ1, TLS208D1LDVXUMA1 delivers higher output current (800 mA), automotive-grade thermal robustness (150 °C T_j), and adjustable reset threshold - making it optimal for cost-sensitive, high-reliability engine and ADAS subsystems requiring minimal external components.

Availability

TLS208D1LDVXUMA1 is available at Aetrix Electronics and suitable for engine control units, ADAS domain controllers, and body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLS208D1LDVXUMA1 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.

The TLS208D1 belongs to Infineon's automotive linear regulator product line, designed specifically for post-regulation in harsh-environment vehicle systems where reliability, thermal resilience, and integrated fault handling are mandatory.

FAQ

What is the minimum output capacitance required for stable operation of TLS208D1LDVXUMA1?

The device requires a minimum 1 µF ceramic output capacitor with ESR ≤10 Ω at 10 kHz to ensure loop stability across the full −40 °C to +150 °C operating temperature range. This value accounts for worst-case ±30 % capacitance tolerance and is validated per JEDEC JESD51 thermal standards.

How is the reset threshold adjusted on TLS208D1LDVXUMA1?

The reset threshold is set by connecting the RADJ pin to a resistor divider between the Q (3.3 V) and GND pins. The voltage at RADJ determines the reset point - for example, a 2.9 V threshold is achieved with R1 = 100 kΩ (Q to RADJ) and R2 = 732 kΩ (RADJ to GND), per the internal 1.22 V reference and comparator hysteresis.

Does TLS208D1LDVXUMA1 support reverse polarity protection?

No, TLS208D1LDVXUMA1 does not integrate reverse polarity protection. External protection - such as a series Schottky diode or ideal diode controller - must be added if the input may experience reversed battery connection, as absolute maximum rating for VI is −0.3 V.

Can TLS208D1LDVXUMA1 be used without the enable pin connected?

Yes - the EN pin can be tied directly to the input voltage (I) to configure the device for always-on operation. In this configuration, the IC powers up immediately upon valid input voltage application and remains active until input drops below 2.7 V or thermal shutdown activates.

TLS208D1LDVXUMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: OPTIREG™

Package/Case:: 10-TFDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Adjustable

Number of Regulators:: 1

Voltage - Input (Max):: 18V

Voltage - Output (Min/Fixed):: 0.8V

Voltage - Output (Max):: 5.25V

Voltage Dropout (Max):: 1.2V @ 800mA

Current - Output:: 800mA

Current - Quiescent (Iq):: 170 µA

Current - Supply (Max):: 250 µA

PSRR:: 62dB (10kHz)

Control Features:: 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-TSON-10

TLS208D1LDVXUMA1 FAQ

1.How can I place an order for TLS208D1LDVXUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLS208D1LDVXUMA1 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 TLS208D1LDVXUMA1 reliable?

The price and inventory of TLS208D1LDVXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLS208D1LDVXUMA1 is usually 5 days.

3.What payment methods are accepted for TLS208D1LDVXUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLS208D1LDVXUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLS208D1LDVXUMA1?

TLS208D1LDVXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLS208D1LDVXUMA1 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 TLS208D1LDVXUMA1?

For technical support, including TLS208D1LDVXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLS208D1LDVXUMA1 requirements.

6.How does Aetrix verify that TLS208D1LDVXUMA1 is sourced from the original manufacturer or authorized distributors?

All TLS208D1LDVXUMA1 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 TLS208D1LDVXUMA1 meets industry standards.

7.What is the process for return or replacement of TLS208D1LDVXUMA1?

All TLS208D1LDVXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLS208D1LDVXUMA1, 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 TLS208D1LDVXUMA1 part is unused and in its original packaging.

Return procedure for TLS208D1LDVXUMA1:

1.Submit a request within 90 days.

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

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