Obsolete — last-time-buy sourcing through independent distribution
The BTS436L2G carries an Obsolete product status. No official replacement part is listed on the record.
35 mOhm Rds(on) — conduction loss and thermal budget
Typical on-resistance of 35 mOhm sets the conduction loss floor for the high-side switch. At 8.8 A maximum output, the resistive loss at full load is roughly 2.7 W, which the TO-263-5 (D²Pak) package must dissipate — the large exposed tab on PG-TO263-5-2 helps sink heat to the PCB copper plane. Rds(on) increases with junction temperature; the 150 °C maximum junction rating means derating is required at high ambient temperatures typical of under-hood or industrial enclosures.
4.75 V to 41 V load supply, 8.8 A output — power distribution envelope
The load voltage range spans 4.75 V to 41 V, covering standard automotive battery rails (12 V, 24 V) and industrial 48 V systems with margin. The 8.8 A continuous output rating supports loads such as relays, solenoids, lamps, and small motors. As a high-side configuration with a 1:1 input-to-output ratio, the switch connects the load to the supply rail when the non-inverting input is driven high. No external Vcc supply is required — the gate drive is self-powered from the load voltage.
Fault protection suite — reduces external supervision circuitry
Integrated protections include current limiting (fixed), open load detection, over-temperature shutdown, and over-voltage clamp. The Status Flag output provides a diagnostic signal to the host controller, reducing the need for external sense resistors or comparators.
Package and mounting — TO-263-5 D²Pak
Surface-mount package in TO-263-5 (D²Pak) with 4 leads plus tab, also designated PG-TO263-5-2. The exposed tab is the main thermal path — PCB layout must provide a solid copper pour and vias to the ground plane for adequate heat spreading. Standard reflow profile for MSL-rated D²Pak applies.