The MIC94051 is a 4-terminal P-channel MOSFET in an SOT-143 package designed for high-side switching in space-constrained applications. It features an internal gate pull-up resistor, reducing external component count. The device exhibits a typical on-resistance of 0.125Ω at 4.5V gate-to-source voltage and operates with as low as 1.8V gate drive. The separate substrate connection enables reverse-blocking operation and improves thermal performance, with a junction-to-ambient thermal resistance of 220°C/W. It supports continuous drain currents up to 1.8A at 25°C and operates over a junction temperature range of -40°C to +150°C.
The MIC94050 and MIC94051 are 4-terminal silicon gate P-channel MOSFETs that provide low on-resistance in a very small package.
Designed for high-side switch applications where space is critical, the MIC94050/1 exhibits an on-resistance of typically 0.125 Ohm at 4.5V gate-to-source voltage. The MIC94050/1 also operates with only 1.8V gate-to-source voltage.
The MIC94050 is the basic 4-lead P-channel MOSFET. The MIC94051 is a variation that includes an internal gate pull-up resistor that can reduce the system parts count in many applications.
The 4-terminal SOT-143 package permits a substrate connection separate from the source connection. This 4-terminal configuration improves the θJA (improved heat dissipation) and makes reverse-blocking switch applications practical.
The small size, low threshold, and low RDS(on) make the MIC94050/1 the ideal choice for PCMCIA, USB, back-up battery-power, and distributed power management applications.
Additional Features
| Microchip Technology, Inc. | |
|---|---|
| Product Category | Metal-Oxide Semiconductor FET (MOSFET) |
| Product Number | MIC94051 |
| Product Name | 4-Terminal P-Channel MOSFET High-Side Switch |
| Polarity | P-Channel |
