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PDF MIC94051 Data sheet ( Hoja de datos )
| Número de pieza | MIC94051 | |
| Descripción | P-Channel MOSFET | |
| Fabricantes | Micrel Semiconductor | |
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MIC94050/94051
Micrel
MIC94050/94051
4-Terminal SymFET™ P-Channel MOSFET
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
0.125Ω 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 con-
nection 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 applica-
tions.
SymFET™
Features
• 0.125Ω 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 Temp. Range*
MIC94050BM4 –40°C to +150°C
MIC94051BM4 –40°C to +150°C
MIC94050YM4 –40°C to +150°C
MIC94051YM4 –40° to +150°C
* Operating Junction Temperature
Package
SOT-143
SOT-143
SOT-143
SOT-143
Pb-FREE
NO
NO
YES
YES
Pin Configuration
Typical PCB Layout
Part
Identification
Drain Substrate
P5x
Gate Source
Part Number
MIC94050BM4
MIC94051BM4
MIC94050YM4
MIC94051YM4
Identification
P50
P51
P50
P51
D
PCB heat sikn
plane improves
heat dissipation
SS
SOT-143 Package (M4)
Schematic Symbol
GS
PCB traces
Functional Diagrams
S
S
Source
Gate Substrate
Drain
~350kΩ
G SS G
SS
Internal
gate-to-source
D
pull-up resistor
D
Schematic Symbol
MIC94050
MIC94051
SymFET is a trademark of Micrel, Inc.
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
January 2007
1 MIC94050/94051
1 page  
MIC94050/94051
Package Information
Micrel
SOT-143 (M4)
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB http://www.micrel.com
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use.
Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
Micrel Products are not�
reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into
the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s
use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify
Micrel for any damages resulting from such use or sale.
© 2002 Micrel, Incorporated
January 2007
5 MIC94050/94051
5 Page | ||
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| PDF Descargar | [ Datasheet MIC94051.PDF ] | |
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