Low-side switch with integrated protection — BTS3080TFATMA1
The BTS3080TFATMA1 is a single-channel low-side N-channel power switch from Infineon's HITFET® series, designed for general-purpose switching of resistive, inductive, and lamp loads up to 3 A continuous and 40 V load voltage. No external Vcc supply is needed; the gate is driven by the logic-level input directly.
Fault protection and auto-restart behaviour
The switch integrates fixed current limiting, over-temperature shutdown, and over-voltage clamping — no external sense resistor or comparator required. After a thermal fault, the device auto-restarts once the junction cools below the threshold, which suits intermittent overloads like motor inrush or lamp cold-start. The non-inverting input turns the switch on with a logic-high signal; the on/off interface is simple GPIO-driven.
Package, mounting, and temperature range
Housed in a PG-TO252-3 (DPak) surface-mount package with two leads and a drain tab.
The part is ROHS3 compliant.
Delta against BTS142DATMA1 — higher-current sibling
The BTS142DATMA1 is the same HITFET® low-side family, same logic input, same fault protection set, but with a 23 mOhm typical Rds(on) and a 4.6 A continuous output rating at the cost of a slightly larger die. If your load draws over 3 A or you need lower conduction loss, the BTS142 is the direct step-up. The BTS3080 covers the 1–3 A band efficiently and at a lower unit cost.