Infineon Technologies TLS205B0EJVXUMA1

Overview

TLS205B0EJVXUMA1 from Infineon Technologies is a low-dropout, low-noise linear voltage regulator designed as a post-regulator in automotive power domains. It delivers 500 mA output current with 320 mV dropout at full load, 3.3 V fixed output, ±2.5% accuracy over temperature and load, and 24 µVRMS noise (10 Hz–100 kHz) when used with a 10 nF bypass capacitor. It is AEC-Q100 qualified for under-hood battery-powered systems.

For engineers reviewing the TLS205B0EJVXUMA1 datasheet, TLS205B0EJVXUMA1 pinout, TLS205B0EJVXUMA1 application, or TLS205B0EJVXUMA1 equivalent, key selection criteria include its 30 µA quiescent current, reverse polarity protection, no-reverse-current behavior, stability with ≥3.3 µF ceramic output capacitors, and PG-DSO-8 exposed-pad thermal performance.

Technical Context

The TLS205B0EJVXUMA1 implements a precision bandgap reference and error amplifier driving a PMOS pass transistor, enabling ultra-low dropout and zero reverse current flow. Its internal saturation control and thermal shutdown circuitry activate at 150°C junction temperature, while overcurrent limiting operates in foldback mode.

It features Kelvin-sense capability via the SENSE pin (fixed version) for load-side regulation correction, and integrates reverse-battery protection that blocks conduction when VI < GND - eliminating external diodes. The BYP pin accepts up to 10 nF to shunt reference noise, directly reducing output voltage ripple without requiring external op-amps or filters.

Key Specifications

Pinout & Package

Package: PG-DSO-8 exposed-pad (RoHS-compliant, thermally enhanced). Exposed pad (Pin 9) must be soldered to PCB ground plane and electrically tied to Pin 6 (GND) for optimal thermal resistance (R_thJA = 52 K/W with 600 mm² copper area).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV73333PDBVR and TPS7B8733QKVURQ1, TLS205B0EJVXUMA1 uniquely combines AEC-Q100 qualification, reverse-polarity blocking, sub-25 µVRMS noise, and 30 µA IQ - making it optimal for cost-sensitive, noise-critical automotive post-regulation where protection and efficiency are jointly essential.

Availability

TLS205B0EJVXUMA1 is available at Aetrix Electronics and suitable for automotive body control modules, ADAS camera systems, and infotainment head units requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLS205B0EJVXUMA1 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 R&D infrastructure.

The OPTIREG™ linear regulator product line targets automotive and industrial applications requiring high reliability, low quiescent current, and integrated protection - specifically engineered for battery-powered ECUs and post-regulation stages in harsh environments.

FAQ

What is the minimum input voltage required for TLS205B0EJVXUMA1 to maintain 3.3 V output at 500 mA?

The minimum input voltage is 3.62 V, calculated as 3.3 V + 320 mV dropout. This value is guaranteed across –40°C to +125°C junction temperature and full load range per datasheet Section 3.2 (Functional Range, P_4.2.1). Below this, regulation is lost and output voltage drops linearly with input.

Can TLS205B0EJVXUMA1 be used without the BYP capacitor?

Yes - the BYP pin is optional. If unused, it must be left unconnected (not tied to GND or Q). Omitting the 10 nF BYP capacitor increases output noise to 45 µVRMS (typical), but all other specifications including regulation accuracy, dropout, and stability remain fully functional.

Is the SENSE pin mandatory for basic operation?

No - the SENSE pin can be directly connected to the Q (output) pin for standard regulation. Its use is optional and only required when compensating for PCB trace resistance between the regulator and remote load; doing so improves load regulation accuracy from ±2.5% to better than ±0.5% in high-current, long-trace layouts.

Does TLS205B0EJVXUMA1 require an input capacitor?

An input capacitor is recommended but not strictly required for stability. It is mandatory if the device is placed >15 cm from the main battery filter capacitor or if input trace inductance exceeds 100 nH. A 1–10 µF ceramic capacitor placed close to Pin 8 (I) suppresses high-frequency noise and improves transient response during load dump events.