Two 5.5A high-side channels with 21 mOhm Rds(on)
The Infineon BTS5240LNT is a dual-channel high-side power switch in a PG-DSO-12-2 package, each channel rated for a continuous 5.5A maximum output. The typical on-resistance of 21 mOhm keeps conduction losses low enough that at 5A per channel the dissipation stays under 0.5W — manageable on the exposed pad with reasonable copper area.
4.5V to 28V load voltage — 12V and 24V systems covered
The load voltage range spans 4.5V to 28V, which covers both 12V automotive and 24V industrial truck/bus rails without a separate regulator. No Vcc supply is required — the switch is self-powered from the load pin, simplifying the BOM by one rail.
Fault protection set reduces external circuitry
Built-in fixed current limiting, open-load detection, over-temperature shutdown, and over-voltage clamping cover the common failure modes for a resistive or inductive load. The open-load detect is useful for lamp or solenoid diagnostics — it flags a broken wire without a separate sense resistor.
Junction temperature rated to 150°C
The 150°C TJ max means the thermal shutdown threshold sits above the normal operating ceiling, giving margin for transient overloads.
Obsolete — sourced through independent distribution
The BTS5240LNT carries an Obsolete lifecycle status from Infineon.