The Vishay SIP32419DN-T1-GE4 is a single-channel, high-side P-channel power switch in a 10-DFN (3x3 mm) package. It handles a load voltage from 6 V to 28 V and delivers up to 3.5 A continuous output. The 56 mOhm typical Rds(on) keeps conduction losses low enough that the 3x3 DFN can dissipate the heat without a heatsink in still air, provided the board copper is adequate.
Adjustable current limit and fault protection
Fault protection includes adjustable current limiting, over-temperature shutdown, and undervoltage lockout (UVLO). The adjustable current limit lets you set the trip threshold with an external resistor, matching the protection to the load — useful when the same BOM position must drive different loads across product variants. The status flag output signals over-current or thermal faults to the system controller. The switch is self-powered from the load rail — no separate Vcc supply is needed. The On/Off input is non-inverting: logic high turns the P-channel FET on. The slew-rate controlled turn-on limits inrush current into capacitive loads.
The exposed pad is the drain terminal — keep the copper pour at the load voltage potential.