Fixed 8.5V rail with 1.5A capability
The STMicroelectronics L4940D2T85-TR is a single-output, positive fixed LDO voltage regulator delivering a regulated 8.5V output at up to 1.5A. Maximum dropout is 0.9V at the full 1.5A load, meaning the input must stay at least 0.9V above 8.5V to maintain regulation — a 9.4V minimum input at full current. Power-supply rejection is 68dB at 120Hz, which filters line-frequency ripple effectively for analog loads such as sensor front-ends or audio stages.
Protection and thermal range for harsh environments
On-chip protection includes over-temperature shutdown, reverse polarity protection, and short-circuit current limiting — covering the common fault conditions in automotive and industrial power rails. Quiescent current is 8 mA typical, with a maximum supply current of 50 mA — the 8 mA Iq is reasonable for a 1.5A LDO and does not dominate the thermal budget in always-on circuits.
D2PAK footprint and tape-and-reel ordering
For BOM lines that still specify this exact order code, availability is limited to independent distribution channels.