Infineon Technologies TLS115D0EJXUMA1

Overview

TLS115D0EJXUMA1 from Infineon Technologies is a monolithic high-precision linear voltage tracking regulator in PG-DSO-8 package, delivering 150 mA output current with ±0.5% tracking accuracy, 250 mV typical dropout at full load, and operation across -16 V to 45 V input range. It serves as an off-board sensor supply in automotive powertrain systems under AEC-Q100 qualification.

For engineers reviewing the TLS115D0EJXUMA1 datasheet, TLS115D0EJXUMA1 pinout, TLS115D0EJXUMA1 application, or TLS115D0EJXUMA1 equivalent, key selection criteria include adjustable 2.0–14 V tracking range, reverse polarity protection, open-drain power-good signaling, soft-start control, and thermal shutdown behavior within -40°C to 150°C junction temperature.

Technical Context

The TLS115D0EJXUMA1 implements a precision analog tracking architecture where the OUT pin replicates the ADJ reference voltage with minimal offset and drift, enabling accurate replication of external sensor reference rails. Its internal error amplifier, pass transistor, and protection logic operate across wide input voltage swings while maintaining stability with ≥1 µF ceramic output capacitors.

It integrates independent fault detection circuits for overvoltage/undervoltage on PG, short-circuit protection (to GND and battery), and overtemperature shutdown. The EN pin provides TTL-compatible enable control, and the exposed thermal pad requires direct connection to PCB ground for thermal management per JEDEC JESD51 standards.

Key Specifications

Pinout & Package

Package: PG-DSO-8 (exposed thermal pad), RoHS-compliant, AEC-Q100 qualified.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage tracking regulator applications.

Compared with TLS850F0EJXUMA1 and TLV71712PDQNR, TLS115D0EJXUMA1 uniquely delivers sub-1% tracking accuracy with 2.0 V adjustable lower limit and automotive-grade transient tolerance - making it irreplaceable for precision off-board sensor biasing where reference fidelity and fault resilience are co-dependent.

Availability

TLS115D0EJXUMA1 is available at Aetrix Electronics and suitable for automotive powertrain sensor supply, protected off-board load switching, and secondary ECU voltage rail generation requiring stable component supply across extended temperature and voltage stress conditions.

Supply support for TLS115D0EJXUMA1 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 AEC-Q100 validation infrastructure.

The OPTIREG™ linear regulator product line targets automotive and industrial applications demanding high reliability, wide operating ranges, and integrated protection - specifically engineered for harsh-environment sensor interfaces and ECU auxiliary supplies.

FAQ

What is the minimum ADJ input voltage required for stable tracking operation?

The TLS115D0EJXUMA1 requires a minimum ADJ input voltage of 2.0 V to maintain specified tracking accuracy and regulation. Below this threshold, output voltage may deviate beyond ±0.5% and regulation becomes unstable. This value is confirmed in Table 2 (Functional Range) of the Rev. 1.13 datasheet under parameter P_3.2.2.

Can the PG pin be used without an external pull-up resistor?

No - the PG pin is an open-drain output and requires an external pull-up resistor to a valid logic-high voltage (e.g., 3.3 V or 5 V). Without it, the pin remains floating and cannot assert a reliable "good" or "fault" logic state. Typical values range from 10 kΩ to 100 kΩ depending on bus capacitance and rise-time requirements.

Is the exposed thermal pad electrically connected internally?

Yes - the exposed thermal pad is internally connected to GND and must be soldered directly to a PCB ground plane. It serves both thermal dissipation (R_thJC = 18 K/W) and electrical grounding; leaving it unconnected degrades thermal performance and may cause functional instability or premature thermal shutdown.

Does the TLS115D0EJXUMA1 support bidirectional current flow on the IN pin?

No - the IN pin is a unidirectional input designed for forward current only. While the device tolerates -16 V reverse input voltage due to integrated reverse polarity protection, it does not sink current from external sources back into the IN pin. Reverse current flow is blocked by internal protection circuitry and is not supported in normal or fault operation.