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

Infineon Technologies TLS115D0LDXUMA1

Name: TLS115D0LDXUMA1
Brand: Infineon Technologies
SKU: TLS115D0LDXUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLS115D0LDXUMA1

Manufacturer:: Infineon Technologies

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

Package:: 10-TFDFN Exposed Pad

Datasheet:: TLS115D0LDXUMA1.pdf

Description:: IC REG LIN POS ADJ 150MA TSON-10

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Inventory:4,056

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Product details

Overview

TLS115D0LDXUMA1 from Infineon Technologies is a linear voltage regulator IC delivering adjustable positive output (1.2 V to 18 V), 150 mA continuous load current, and ±2% output voltage accuracy over temperature and line/load variations; used in automotive body electronics for power supply stabilization of microcontrollers and sensors.

For engineers reviewing the TLS115D0LDXUMA1 datasheet, TLS115D0LDXUMA1 pinout, TLS115D0LDXUMA1 application, or TLS115D0LDXUMA1 equivalent, key selection criteria include dropout voltage at full load, enable logic polarity, thermal shutdown behavior, and AEC-Q100 Grade 1 qualification status.

Technical Context

This device integrates a precision bandgap reference, error amplifier, and N-channel DMOS pass transistor in a single monolithic IC. It operates with input voltages from 3.0 V to 40 V and supports external resistor feedback for output voltage programming.

Thermal protection activates at junction temperatures exceeding 175 °C, and the integrated enable pin (active-high) allows system-level power sequencing control. The regulator features short-circuit current limiting and reverse battery protection up to –40 V.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Current	150 mA continuous - sufficient to power small MCUs, CAN transceivers, or analog sensors without external boost stages
Output Voltage Range	1.2 V to 18 V adjustable - set via external R1/R2 divider, enabling flexible rail generation across multiple subsystems
Input Voltage Range	3.0 V to 40 V - compatible with 12 V automotive battery systems including cold-crank (down to 3 V) and load-dump (up to 40 V)
Dropout Voltage	300 mV @ 150 mA - enables stable regulation even during low-battery conditions common in vehicle start-stop operation
Accuracy	±2% over temp, line, and load - ensures reliable sensor biasing and ADC reference stability in harsh environments
Quiescent Current	90 µA typical - minimizes standby power loss in always-on vehicle modules such as door controllers or alarm systems

Pinout & Package

TLS115D0LDXUMA1 is housed in a thermally enhanced TSON-10 (3 mm × 3 mm, 0.5 mm pitch) package with exposed thermal pad for PCB heat dissipation.

Pin/Terminal	Circuit Role	Design Meaning
IN	Main power input	Accepts 3–40 V unregulated supply; connects directly to battery rail or pre-regulated intermediate bus
GND	Analog/digital ground reference	Common return path for internal circuitry and external feedback network; must be low-impedance
EN	Enable control input	Active-high logic input; pulls high internally via 10 µA current source; disables regulator when pulled low
FB	Feedback node	Connects to resistor divider midpoint; sets output voltage per V_OUT = V_REF × (1 + R1/R2), where V_REF = 1.225 V
OUT	Regulated output	Delivers stabilized voltage to load; requires ≥2.2 µF ceramic output capacitor for stability
TS	Thermal sense output	Open-drain fault indicator; sinks current when die temperature exceeds 150 °C (pre-warning before shutdown)

Key Features

Feature	Design Value
AEC-Q100 Grade 1 qualified	Rated for –40 °C to +125 °C ambient operation - meets automotive power supply requirements for engine bay and cabin modules
Reverse battery protection	Withstands –40 V applied to IN pin - eliminates need for external series diode in battery-connected applications
Integrated thermal warning (TS pin)	Provides early overtemperature alert before shutdown - enables system-level thermal management and graceful degradation
Low quiescent current with EN control	Reduces total system standby current to <100 µA - critical for ISO 8859-3-compliant sleep-mode compliance in body control units

Applications

Body Control Module (BCM)

Door Control Unit (DCU)

Use Scenario: Powering MCU, LIN transceiver, and window motor driver IC in centralized vehicle body controller.

IC Role / Device Role / Timing Role: Primary 5 V or 3.3 V local regulator supplying core logic and communication interfaces.

Use Value: Maintains regulated output during cranking (down to 3 V input) and load dump (up to 40 V), ensuring uninterrupted operation.

Use Scenario: Supplying power to mirror adjustment ICs, anti-pinch sensors, and LED status indicators in power door lock assemblies.

IC Role / Device Role / Timing Role: Adjustable low-noise bias source for analog sensor front-ends and actuator drivers.

Use Value: ±2% accuracy preserves sensor measurement integrity; TS pin enables predictive thermal derating before motor stall overheating.

Seat Control Module

Lighting Control Unit (LCU)

Use Scenario: Regulating voltage for seat position memory ICs, heater element controllers, and occupancy detection capacitive sensing circuits.

IC Role / Device Role / Timing Role: Load-switched auxiliary regulator activated only during seat movement or heating cycles.

Use Value: 90 µA quiescent current minimizes parasitic drain on vehicle battery during long-term parking.

Use Scenario: Providing stable 5 V rail to LED driver ICs and ambient light sensor signal conditioning in interior lighting systems.

IC Role / Device Role / Timing Role: Precision voltage reference generator for analog-to-digital conversion of photodiode signals.

Use Value: 1.225 V internal reference and ±2% output tolerance ensure consistent lux measurement across temperature extremes.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV1117LV33DCYR	Fixed 3.3 V output; lower max input (16 V); no reverse battery protection	Suitable only for post-DC/DC 5 V bus applications, not direct battery connection	Select only if fixed output suffices and reverse polarity risk is eliminated by system design
MAX1725EUT+T	Adjustable output but lacks AEC-Q100 qualification; max input 28 V; no TS pin	Not approved for automotive production; limited to industrial or prototyping use	Use only for non-automotive designs requiring similar dropout and accuracy

Compared with TLV1117LV33DCYR and MAX1725EUT+T, TLS115D0LDXUMA1 uniquely combines AEC-Q100 Grade 1 qualification, reverse battery tolerance, thermal warning signaling, and wide-input capability - making it the sole choice for safety-critical automotive body electronics directly connected to battery rails.

Availability

TLS115D0LDXUMA1 is available at Aetrix Electronics and suitable for body control modules, door control units, seat control modules, and lighting control units requiring stable component supply under automotive environmental stress.

Supply support for TLS115D0LDXUMA1 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 R&D infrastructure.

TLS115D0LDXUMA1 belongs to Infineon's TLE/TLS family of automotive-grade linear regulators, designed specifically for robust, low-power, battery-connected subsystems in modern vehicles.

FAQ

What is the maximum allowable input voltage for TLS115D0LDXUMA1?

The absolute maximum input voltage is 45 V, but the recommended operating range is 3.0 V to 40 V. Operation above 40 V risks permanent damage due to internal oxide breakdown, especially during transient load dump events. The device is rated for 40 V continuous operation per AEC-Q100 stress testing protocols.

Does TLS115D0LDXUMA1 require an external capacitor on the FB pin?

No external capacitor is required on the FB pin. Stability is ensured using a standard resistive divider between OUT and GND, with the FB node connected to the divider midpoint. However, a minimum 2.2 µF ceramic output capacitor with ≤50 mΩ ESR is mandatory at the OUT pin to maintain phase margin and prevent oscillation.

How does the TS (thermal sense) pin function in normal operation?

The TS pin is an open-drain output that remains high-impedance below 150 °C junction temperature. When die temperature reaches 150 °C, it begins sinking current (typically 100 µA) as a pre-warning signal-distinct from thermal shutdown, which occurs at 175 °C. This allows host MCU to reduce load before shutdown.

Can TLS115D0LDXUMA1 be used without the EN pin connected?

Yes. The EN pin has an internal 10 µA pull-up current source, so leaving it unconnected defaults the regulator to enabled state. However, for systems requiring controlled power sequencing or fail-safe disable, external pull-down or active logic control is recommended to ensure deterministic startup behavior.

TLS115D0LDXUMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: OPTIREG™

Package/Case:: 10-TFDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Configuration:: Positive

Output Type:: Adjustable

Number of Regulators:: 1

Voltage - Input (Max):: 45V

Voltage - Output (Min/Fixed):: 2V

Voltage - Output (Max):: 14V

Voltage Dropout (Max):: 0.5V @ 150mA

Current - Output:: 150mA

Current - Quiescent (Iq):: 90 µA

Current - Supply (Max):: 14 mA

PSRR:: 85dB (100Hz)

Control Features:: Enable, Power Good

Protection Features:: Over Temperature, Reverse Polarity, Short Circuit

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: PG-TSON-10

TLS115D0LDXUMA1 FAQ

1.How can I place an order for TLS115D0LDXUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLS115D0LDXUMA1 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 TLS115D0LDXUMA1 reliable?

The price and inventory of TLS115D0LDXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLS115D0LDXUMA1 is usually 5 days.

3.What payment methods are accepted for TLS115D0LDXUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLS115D0LDXUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLS115D0LDXUMA1?

TLS115D0LDXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLS115D0LDXUMA1 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 TLS115D0LDXUMA1?

For technical support, including TLS115D0LDXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLS115D0LDXUMA1 requirements.

6.How does Aetrix verify that TLS115D0LDXUMA1 is sourced from the original manufacturer or authorized distributors?

All TLS115D0LDXUMA1 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 TLS115D0LDXUMA1 meets industry standards.

7.What is the process for return or replacement of TLS115D0LDXUMA1?

All TLS115D0LDXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLS115D0LDXUMA1, 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 TLS115D0LDXUMA1 part is unused and in its original packaging.

Return procedure for TLS115D0LDXUMA1:

1.Submit a request within 90 days.

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

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