MIC94030/94031 TinyFET® P-Channel MOSFET - Micrel - #1

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MIC94030/94031 TinyFET® P-Channel MOSFET TinyFET is a registered trademark of Micrel, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com July 2006 M9999-071106 General Description The MIC94030 and MIC94031 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 MIC94030/1 exhibits an on-resistance of typically 0.75Ù at 4.5V gate-to-source voltage. The MIC94030/1 also operates with only 2.7V gate-to-source voltage. The MIC94030 is the basic 4-lead P-channel MOSFET. The MIC94031 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 èJA (improved heat dissipation) and makes analog switch applications practical. The small size, low threshold, and low RDS(on) make the MIC94030/1 the ideal choice for PCMCIA card sleep mode or distributed power management applications. Features • 13.5V minimum drain-to-source breakdown • 0.75Ù typical on-resistance – at 4.5V gate-to-source voltage • 0.45Ù typical on-resistance – at 10V gate-to-source voltage • Operates with 2.7V gate-to-source voltage • Separate substrate connection for added control • Industry’s smallest surface mount package Applications • Distributed power management • PCMCIA card power management • Battery-powered computers, peripherals • Hand-held bar-code scanners • Portable communications equipment Ordering Information Part Number Standard Marking Pb-Free Marking Junction Temp. Range Package MIC94030BM4 P30 MIC94030YM4 P30 –55° to +150°C SOT-143 MIC94031BM4 P31 MIC94031YM4 P31 –55° to +150°C SOT-143 Pin Configuration Substrate Gate Source Drain P3x Part Identification P3x SOT-143 (M4) Typical PCB Layout S D G SS PCB heat sink plane improves heat dissipation PCB traces