What this latch does and where it fits
The Infineon TLE49462LHALA1 is a Hall-effect latch designed for automotive position and speed sensing. It switches its open-collector output when a south-pole magnetic field exceeds 3.5 mT and releases at -3.5 mT (north pole). The part is AEC-Q100 qualified, rated for a 2.7 V to 18 V supply, and operates across -40°C to 150°C junction temperature — covering under-hood, transmission, and chassis environments where standard commercial Hall switches would derate or fail. Temperature compensation keeps the switch points stable across the range, which matters for wheel-speed or camshaft sensors that must trigger repeatably from cold start to full operating temperature.
Supply range and output drive
The 2.7 V to 18 V supply span lets this latch run directly off an unregulated automotive battery rail without a local regulator. Maximum supply current is 6 mA, and the open-collector output sinks up to 20 mA.
Package and mounting
The TLE49462LHALA1 comes in a 3-pin SSO-3-2 (PG-SSO-3-2) through-hole package. Three pins — supply, ground, output. No special footprint or reflow profile.
Lifecycle and sourcing
Infineon lists the TLE49462LHALA1 as Active (current production). The part is ROHS3 compliant. For BOM planning, this means no imminent obsolescence risk — suitable for both new designs and production replenishment.