TLE42994GMV33XUMA3

Product Overview

The TLE42994GMV33XUMA3 from Infineon Technologies is a single-output, positive fixed linear voltage regulator from the OPTIREG family. It provides a regulated 3.3 V output at up to 150 mA and accepts input voltages up to 45 V, making it suitable for board-level power distribution where a low-current logic rail is required. The device includes enable and reset control features, along with over-current, over-temperature, reverse-polarity, and short-circuit protection. It is specified for operation from -40°C to 150°C junction temperature and carries AEC-Q100 automotive qualification. The regulator is supplied in a surface-mount 14-SOIC package, PG-DSO-14, with a 3.90 mm width.

Key Features

• Fixed positive 3.3 V output with 150 mA output current from one regulator.
• Maximum input voltage is 45 V, with 100 µA quiescent current and 2 mA maximum supply current.
• PSRR is 66 dB at 100 Hz.
• Control features include enable and reset.
• Protection features include over-current, over-temperature, reverse-polarity, and short-circuit protection.
• Automotive grade device qualified to AEC-Q100, with operating junction temperature from -40°C to 150°C.
• Surface-mount 14-SOIC package, PG-DSO-14, with 0.154 inch, 3.90 mm width.

Applications

• Automotive electronic control modules requiring a fixed 3.3 V logic or sensor supply.
• Embedded controller boards that use enable and reset control features for power management.
• Low-current power rails derived from higher-voltage inputs up to 45 V in surface-mount designs.

Design & Procurement Notes

Design considerations include verifying that the load remains within 150 mA and that the 3.3 V output matches the target rail, since the device is fixed-output and single-output. The 45 V input limit, 100 µA quiescent current, and 2 mA maximum supply current should be used in input range and power budget calculations. The enable and reset control features should be integrated with system control logic. The AEC-Q100 automotive grade and -40°C to 150°C junction temperature range should be checked against the intended environmental conditions. Thermal analysis is recommended because linear regulation dissipates the difference between input voltage and 3.3 V at load current. The PG-DSO-14 surface-mount 14-SOIC package should be confirmed against PCB footprint and thermal requirements.