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| MIC94050/94051 Micrel MIC94050/94051 4-Terminal TinyFETTM P-Channel MOSFET Final General Description 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 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 JA (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. Features * 0.125 typical on-resistance at 4.5V gate-to-source voltage * Operates with 1.8V gate-to-source voltage * Separate substrate connection allows reverse-blocking Applications * * * * * * * Distributed power management PCMCIA card power management USB ports Battery-powered computers, peripherals Handheld bar-code scanners Portable communications equipment Reverse blocking battery management Ordering Information Part Number MIC94050BM4 MIC94051BM4 Temperature Range* -40C to +150C -40C to +150C Package SOT-143 SOT-143 * Operating Junction Temperature Pin Configuration Typical PCB Layout D PCB heat sink plane improves heat dissipation SS Drain Part Identification Substrate Part Number Identification P50 P51 P5x Gate Source MIC94050BM4 MIC94051BM4 SOT-143 Package (M4) G S PCB traces Schematic Symbol Functional Diagrams S S Source Gate Substrate Drain D G SS ~350k G Internal gate-to-source pull-up resistor SS D Schematic Symbol TinyFET is a trademark of Micrel, Inc. MIC94050 MIC94051 Micrel, Inc. * 1849 Fortune Drive * San Jose, CA 95131 * USA * tel + 1 (408) 944-0800 * fax + 1 (408) 944-0970 * http://www.micrel.com July 2002 1 MIC94050/94051 MIC94050/94051 Micrel Absolute Maximum Ratings Drain-to-Source Voltage ................................................ -6V Gate-to-Source Voltage ................................................ -6V Continuous Drain Current TA = 25C (VGS = 4.5V) ............................................ 1.8A TA = 100C (VGS = 4.5V) .......................................... 1.2A Total Power Dissipation TA = 25C ............................................................ 568mW TA = 100C .......................................................... 227mW Operating Junction Temperature ............. -40C to +150C Storage Temperature ............................... -55C to +150C ESD Rating, Note 2 Operating Ratings Thermal Resistance JA ...................................................................................... 220C/W JC ..................................................................................... 130C/W Electrical Characteristics (Note 1) Symbol VGS IGSS RGS CISS IDSS RDS(ON) Parameter Gate Threshold Voltage Gate-Body Leakage Gate-Source Resistance Input Capacitance Zero Gate Voltage Drain Current Condition (Note 1) VDS = VGS, ID = -250A VDS = 0V, VGS = -4.5V, Note 2, Note 3 VDS = 0V, VGS = -4.5V, Note 2, Note 4 VGS = 0V, VDS = -5.5V VDS = -5.5V, VGS = 0V VDS = -5.5V, VGS = 0V, TJ = 85C Drain-Source On-Resistance VGS = -4.5V, ID = -100mA VGS = -3.6V, ID = -100mA VGS = -2.5V, ID = -100mA VGS = -1.8V, ID = -100mA VDS = -5.5V, ID = -200mA, Note 5 0.125 0.135 0.165 0.225 3 200 350 600 1 5 0.160 0.180 0.200 0.280 Min 0.5 Typ Max 1.2 1 500 Units V A k pF A A S gFS Note 1. Note 2. Note 3. Note 4. Note 5. Forward Transconductance TA = 25C unless noted. Substrate connected to source for all conditions. ESD gate protection diode conducts during positive gate-to-source voltage excursions. IC devices are inherently ESD sensitive. Handling precautions required MIC94050 only. MIC94051 only. Pulse Test: Pulse Width 80s, Duty Cycle 0.5%. MIC94050/94051 2 July 2002 MIC94050/94051 Micrel Typical Characteristics On-Resistance vs. Gate-to-Source Voltage 1000 900 3.5VGS RDS(ON)(m) 3.0VGS 2.5VGS 2.0VGS RDS(ON) (m) 800 700 600 500 400 300 200 100 0 ID = 100mA 0 0 ID = 1A 500 400 300 200 100 3.3VGS 1.8VGS 2.5VGS Drain Characteristics 10 9 8 7 ID (A) 6 5 4 3 2 1 0 RDS(ON) vs. Drain Current 1.5VGS 4.2VGS 0 1 2 3 4 5 DRAIN-TO-SOURCE VOLTAGE (V) 0 1 2 3 4 5 6 GATE-TO-SOURCE VOLTAGE (V) 1 2 3 DRAIN CURRENT (A) 4 DRAIN-SOURCE DIODE VF (V) 2.5 2 1.5 1 0.5 0 Source Drain Diode Forward Voltage Drop vs. Current GATE THRESHOLD (V) Gate Threshold vs. Temperature 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 ID = -250A RDS(ON) Variance vs. Temperature 1.3 RDS(ON) (NORMALIZED) 1.2 1.1 1 0.9 0.8 VDS=3.6V ID=0.1A 0.7 -40 -15 10 35 60 85 110 135 TEMPERATURE (C) 100s Pulse 0 1 2 3 4 DRAIN-SOURCE CURRENT (A) July 2002 -60 -40 -20 0 20 40 60 80 100 120 140 160 TEMPERATURE (C) 3 MIC94050/94051 MIC94050/94051 Micrel Typical Applications SS* +5V MIC94050 On Off S D Load G 74HC04 * Substrate must be connected to source Figure 1. Load Switch Application +5V Open Drain Output Internal Resistor G S SS* D Load MIC94051 * Substrate must be connected to source Figure 2. Load Switch Application (with internal gate-source pull-up) SS +4V MIC94050 A On Off S D Load G A Off On Off On B Off Off On On Output 0V +4V Li Coin Cell don't! +2.7V to 3.6V Li Coin Cell 2M SS S MIC94050 D G B On Off Figure 3. Reverse-Blocking Battery Back-Up Application MIC94050/94051 4 July 2002 MIC94050/94051 Micrel Package Information 0.950 (0.0374) TYP C L 1.40 (0.055) 2.50 (0.098) 1.20 (0.047) 2.10 (0.083) C L 1.12 (0.044) 0.81 (0.032) DIMENSIONS: MM (INCH) 0.150 (0.0059) 0.089 (0.0035) 3.05 (0.120) 2.67 (0.105) 8 0 0.800 (0.031) TYP 0.400 (0.016) TYP 3 PLACES 0.10 (0.004) 0.013 (0.0005) 0.41 (0.016) 0.13 (0.005) SOT-143 (M4) MICREL, INC. TEL 1849 FORTUNE DRIVE SAN JOSE, CA 95131 FAX USA + 1 (408) 944-0800 + 1 (408) 944-0970 WEB http://www.micrel.com This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel, Inc. (c) 2002 Micrel, Incorporated July 2002 5 MIC94050/94051 |
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