Fixed 3.3 V rail, 200 mA capacity
The TLV70733DQNT is a single-output positive LDO from Texas Instruments, delivering a fixed 3.3 V at up to 200 mA. It takes an input up to 5.5 V and drops out 0.27 V max at 150 mA. Quiescent current sits at 50 µA, which keeps the part in the conversation for always-on or battery-backed rails where every microamp matters. The enable pin lets a system-level supervisor gate the output without an external pass FET. Protection covers over-current, over-temperature, short-circuit, and reverse polarity — the usual set for a modern LDO, but reverse-polarity protection is a welcome inclusion for field wiring where input polarity isn't guaranteed.
Package and mounting
The part comes in a 4-X2SON package measuring 1x1 mm with an exposed pad. The exposed pad is the main thermal path and the ground connection; it needs a solid via array under the pad on the PCB to pull heat into the board.
Temperature grade and where it fits
Rated for a junction temperature range of -40°C to 125°C, this regulator is comfortable in automotive under-hood environments, industrial enclosures near motors, outdoor telecom cabinets, and engine-bay-adjacent electronics. The wide temp span also covers cold-crank conditions and hot-soak scenarios without derating the output current.