1.4 A high-side switch with 105 mOhm Rds(on)
The SIP32432DNP3-T1GE4: The 105 mOhm typical Rds(on) keeps conduction losses low — at 1 A the I²R loss is roughly 105 mW, well within the 4-TDFN package's thermal budget for ambient temperatures up to 85 °C. The switch is controlled by a simple On/Off interface with non-inverting input logic, and requires no external Vcc/Vdd supply — the gate drive is derived from the load rail itself, simplifying the BOM for battery-powered or single-rail designs.
Slew-rate control and reverse-current protection
Slew-rate controlled turn-on limits inrush current into capacitive loads, reducing supply droop and EMI during power-up — useful when switching a downstream regulator or a bank of decoupling capacitors that present a low impedance at start. Reverse-current fault protection blocks current flow from output to input when the output voltage exceeds the input, protecting the upstream supply rail and preventing back-feed into the battery or regulator during fault conditions or when the switch is off.
Package and board-fit: 4-TDFN (1.2x1.6)
Housed in a 4-lead UFDFN with exposed pad (4-TDFN, 1.2 mm x 1.6 mm body), the part occupies minimal board area — the 0.5 mm pitch and small footprint suit space-constrained portable or wearable designs. Surface-mount assembly with Tape & Reel or Cut Tape packaging; the RoHS3-compliant finish avoids the need for a process waiver in lead-free reflow profiles.