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

Infineon Technologies TLS810B1EJV50XUMA1

Name: TLS810B1EJV50XUMA1
Brand: Infineon Technologies
SKU: TLS810B1EJV50XUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLS810B1EJV50XUMA1

Manufacturer:: Infineon Technologies

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

Package:: 8-SOIC (0.154", 3.90mm Width) Exposed Pad

Datasheet:: TLS810B1EJV50XUMA1.pdf

Description:: IC REG LIN 5V 100MA 8DSO E-PAD

Quantity:: RFQ Add To RFQ list

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Inventory:3,471

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Product details

Overview

TLS810B1EJV50XUMA1 from Infineon Technologies is an AEC-Q100 qualified ultra-low-quiescent-current linear voltage regulator delivering fixed 5.0 V ±2% output at up to 100 mA, with 5.5 µA quiescent current, 2.75–42 V input range, and 200 mV typical dropout at full load. It serves as a primary post-regulator for automotive battery-connected systems requiring cranking resilience and low-power standby operation.

For engineers reviewing the TLS810B1EJV50XUMA1 datasheet, TLS810B1EJV50XUMA1 pinout, TLS810B1EJV50XUMA1 application, or TLS810B1EJV50XUMA1 equivalent, key selection criteria include ultra-low I_Q, extended input tracking down to 2.75 V, enable-controlled off-state leakage (<1 µA), thermal shutdown, and PG-DSO-8 EP package compatibility with automotive PCB layout constraints.

Technical Context

The TLS810B1EJV50XUMA1 implements a bandgap-referenced linear regulation architecture with integrated current limiting and overtemperature shutdown. Its regulation loop maintains stable 5.0 V output across input voltages from 2.75 V (cranking) to 42 V (load dump), using only a 1 µF ceramic output capacitor for stability.

Enable control features an internal pull-down resistor; logic-high EN activates regulation while logic-low forces <1 µA off-mode current. The device operates across –40 °C to +150 °C junction temperature and supports reverse-polarity protection via external diode implementation per datasheet guidance.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 5.0 V ±2% - ensures compatible logic-level supply for MCU peripherals and sensors without external feedback network.
Quiescent Current	5.5 µA typ. - enables >1-year battery standby in always-on automotive modules (e.g., RKE, gateway) without drain concerns.
Input Voltage Range	2.75 V to 42 V - supports cold-cranking (≥2.75 V) and transient overvoltage (≤42 V) per ISO 7637-2 without external clamping.
Dropout Voltage	200 mV typ. @ 100 mA - allows regulation down to 5.2 V input, preserving functionality during deep battery sag.
Output Current Limit	Internally limited - protects against short-to-GND faults without external current-sense components.
Enable Threshold	V_EN(H) ≥ 2.0 V, V_EN(L) ≤ 0.8 V - compatible with standard 3.3 V/5 V GPIOs and automotive wake-up signals.
Thermal Shutdown	Active at T_j ≥ 160 °C - prevents permanent damage during sustained overload or poor heatsinking.

Pinout & Package

Package: PG-DSO-8 EP (exposed pad, RoHS-compliant, AEC-Q100 qualified). Thermal pad must be soldered to PCB ground plane for optimal thermal performance (R_thJA = 51 K/W on 2s2p board).

Pin/Terminal	Circuit Role	Design Meaning
1 (I)	Input	Main power input; requires local 100 nF ceramic decoupling to GND to suppress line transients.
3 (EN)	Enable	Active-high digital control; internal pull-down ensures safe default-off state during power-up or MCU reset.
4 (GND)	Ground	Power and signal reference; must be low-impedance connection to exposed thermal pad and system ground plane.
8 (Q)	Output	Regulated 5.0 V supply; requires 1 µF ±30% ceramic capacitor with ESR ≤100 Ω placed adjacent to pin.
Exposed Pad	Thermal / Ground	Electrically connected to GND; mandatory for thermal dissipation and EMI reduction-must be fully soldered.

Key Features

Feature	Design Value
Ultra-low I_Q	5.5 µA enables direct battery connection in always-on ECUs without compromising vehicle battery life.
Extended Cranking Support	Regulation starts at 2.75 V input-ensures uninterrupted sensor or microcontroller operation during engine start.
Single-Capacitor Stability	Stable with only 1 µF ceramic output cap-reduces BOM count and PCB area vs. traditional LDOs requiring ≥10 µF.
Integrated Protection	Current limit + thermal shutdown eliminate need for external fault-handling circuitry in space-constrained modules.
AEC-Q100 Qualified	Validated for automotive Grade 1 (–40 °C to +125 °C ambient) and stress-tested per AEC-Q100 Rev G.

Applications

Automotive Body Control Module (BCM)

Engine Control Unit (ECU) Sensor Supply

Use Scenario: Powering LIN transceivers, door lock actuators, and interior lighting drivers in BCMs with permanent battery connection.

IC Role / Device Role / Timing Role: Primary 5 V LDO supplying microcontroller I/O, CAN/LIN PHYs, and analog sensor interfaces.

Use Value: 5.5 µA I_Q extends vehicle parasitic draw budget; 2.75 V start-up ensures function during cranking-induced voltage dip.

Use Scenario: Providing stable 5 V bias to oxygen sensors, knock sensors, and MAP sensors in engine bay environments.

IC Role / Device Role / Timing Role: Local post-regulator converting switched 12 V rail to precision 5 V reference for ADC front-ends.

Use Value: ±2% output accuracy and 100 mV dropout margin maintain sensor measurement integrity under wide temperature and load variation.

Infotainment System Power Management

RKE & Immobilizer Module

Use Scenario: Supplying backup power domain for real-time clock, EEPROM, and secure boot logic in head units during ignition-off.

IC Role / Device Role / Timing Role: Always-on LDO maintaining critical memory and security functions independent of main system power state.

Use Value: <1 µA off-mode current enables multi-year battery-backed operation without recharge or replacement.

Use Scenario: Powering UWB transceivers, crypto processors, and antenna drivers in passive entry systems.

IC Role / Device Role / Timing Role: Low-noise, fast-wake LDO enabling sub-100 ms response to proximity detection events.

Use Value: Enable pin allows precise power gating; 200 mV dropout ensures reliable operation even with weak key fob batteries.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV73350PDBVR (TI)	350 mA output, 35 µA I_Q, SOT-23-5 package, no AEC-Q100 qualification	Higher current but higher quiescent draw; suitable for non-automotive industrial use where AEC compliance is not required	Select when >100 mA load or smaller footprint is needed, and automotive qualification is waived.
MAX1725EUK50+T (Maxim)	150 mA output, 3.5 µA I_Q, SOT-23-5, AEC-Q100 Grade 2 (–40 °C to +105 °C)	Narrower input range (2.5–16 V); lacks cranking support below 2.5 V and load-dump tolerance beyond 16 V	Select for cost-sensitive cabin modules where 16 V max input suffices and extended cranking is not required.

Compared with TLV73350PDBVR and MAX1725EUK50+T, TLS810B1EJV50XUMA1 uniquely balances ultra-low I_Q, full automotive voltage range (2.75–42 V), and AEC-Q100 Grade 1 qualification-making it the only choice for battery-connected safety-critical or cranking-resilient systems.

Availability

TLS810B1EJV50XUMA1 is available at Aetrix Electronics and suitable for automotive body control modules, engine sensor supplies, infotainment backup domains, and RKE/immobilizer modules requiring stable component supply across extended temperature and voltage extremes.

Supply support for TLS810B1EJV50XUMA1 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 industrial control solutions, with global manufacturing and automotive qualification infrastructure.

The TLS810B1 belongs to Infineon's OPTIREG™ linear regulator product line, designed specifically for automotive battery-connected applications demanding ultra-low quiescent current, cranking resilience, and AEC-Q100 reliability.

FAQ

What is the minimum input voltage required for regulation at full 100 mA load?

The TLS810B1EJV50XUMA1 maintains regulated 5.0 V output down to an input voltage of 5.2 V (5.0 V + 200 mV dropout) at 100 mA. Below that, output voltage drops linearly with input. However, the device remains functional and regulates starting at 2.75 V input-though output falls below 5.0 V in that extended tracking region.

Can the exposed thermal pad be left unconnected for prototype testing?

No. The exposed pad is electrically tied to GND and thermally critical: leaving it unconnected degrades R_thJA by up to 116 K/W (from 51 to 167 K/W on 1s0p board), risking thermal shutdown at >30 mA load. It must be soldered to a solid GND copper pour with thermal vias for production or valid characterization.

Does the device require an input capacitor, and if so, what value?

Yes-a 100 nF ceramic capacitor is recommended directly between Pin 1 (I) and Pin 4 (GND), placed as close as possible to the IC. This mitigates high-frequency noise and line impedance effects; omission may cause instability or false enable/disable triggering during transients.

How does the enable pin behave during power-up when VIN rises before EN is asserted?

Because EN has an internal pull-down resistor, the device remains disabled until EN exceeds ~2.0 V. During VIN ramp-up, the regulator stays off and draws <1 µA until a valid high-level enable signal is applied-preventing uncontrolled output turn-on and ensuring deterministic power sequencing with MCU-controlled EN.

TLS810B1EJV50XUMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: OPTIREG™

Package/Case:: 8-SOIC (0.154", 3.90mm Width) Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 42V

Voltage - Output (Min/Fixed):: 5V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.55V @ 100mA

Current - Output:: 100mA

Current - Quiescent (Iq):: 1 µA

Current - Supply (Max):: 11 µA

PSRR:: 55dB (100Hz)

Control Features:: Enable

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-DSO-8

TLS810B1EJV50XUMA1 FAQ

1.How can I place an order for TLS810B1EJV50XUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLS810B1EJV50XUMA1 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 TLS810B1EJV50XUMA1 reliable?

The price and inventory of TLS810B1EJV50XUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLS810B1EJV50XUMA1 is usually 5 days.

3.What payment methods are accepted for TLS810B1EJV50XUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLS810B1EJV50XUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLS810B1EJV50XUMA1?

TLS810B1EJV50XUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLS810B1EJV50XUMA1 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 TLS810B1EJV50XUMA1?

For technical support, including TLS810B1EJV50XUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLS810B1EJV50XUMA1 requirements.

6.How does Aetrix verify that TLS810B1EJV50XUMA1 is sourced from the original manufacturer or authorized distributors?

All TLS810B1EJV50XUMA1 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 TLS810B1EJV50XUMA1 meets industry standards.

7.What is the process for return or replacement of TLS810B1EJV50XUMA1?

All TLS810B1EJV50XUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLS810B1EJV50XUMA1, 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 TLS810B1EJV50XUMA1 part is unused and in its original packaging.

Return procedure for TLS810B1EJV50XUMA1:

1.Submit a request within 90 days.

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

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