mic94051ym4 Micrel Semiconductor, mic94051ym4 Datasheet

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mic94051ym4

Manufacturer Part Number
mic94051ym4
Description
Mic94050/mic94051 4-terminal Tinyfet? P-channel Mosfet
Manufacturer
Micrel Semiconductor
Datasheet

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Part Number
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Part Number:
MIC94051YM4
Manufacturer:
MICREL
Quantity:
110
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 θ
and makes reverse-blocking switch applications practical.
The small size, low threshold, and low R
MIC94050/1 the ideal choice for PCMCIA, USB, back-up
battery-power, and distributed power management applica-
tions.
Pin Configuration
Schematic Symbol
January 2007
SymFET is a trademark of Micrel, Inc.
MIC94050/94051
Identification
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
Part
Drain
Gate
SOT-143 Package (M4)
P5x
Schematic Symbol
Gate
Substrate
Source
JA
Source
Drain
Substrate
(improved heat dissipation)
Part Number
MIC94050BM4
MIC94051BM4
MIC94050YM4
MIC94051YM4
DS(on)
make the
Identification
P50
P51
P50
P51
1
Features
• 0.125Ω typical on-resistance
• 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
* Operating Junction Temperature
Typical PCB Layout
Functional Diagrams
Part Number
MIC94050BM4
MIC94051BM4
MIC94050YM4
MIC94051YM4
4-Terminal SymFET™ P-Channel MOSFET
G
at 4.5V gate-to-source voltage
MIC94050
MIC94050/94051
S
D
–40°C to +150°C
–40°C to +150°C
–40°C to +150°C
–40° to +150°C
Temp. Range*
D
G
S S
PCB traces
S S
~350kΩ
Internal
gate-to-source
pull-up resistor
S
heat dissipation
plane improves
PCB heat sin k
G
Package
SOT-143
SOT-143
SOT-143
SOT-143
MIC94051
MIC94050/94051
S
Pb-FREE
SymFET™
D
YES
YES
NO
NO
Micrel
SS

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mic94051ym4 Summary of contents

Page 1

... Battery-powered computers, peripherals • Handheld bar-code scanners • Portable communications equipment • Reverse blocking battery management make the Ordering Information DS(on) Part Number MIC94050BM4 MIC94051BM4 MIC94050YM4 MIC94051YM4 * Operating Junction Temperature Typical PCB Layout Identification P50 P51 P50 P51 Functional Diagrams G MIC94050 ...

Page 2

MIC94050/94051 Absolute Maximum Ratings Drain-to-Source Voltage ............................................................ Gate-to-Source Voltage ................................................. –6V Continuous Drain Current T = 25° 4.5V) ............................................ 1. 100° 4.5V) .......................................... 1. Total Power Dissipation T = 25°C ...

Page 3

MIC94050/94051 Typical Characteristics Drain Characteristics DRAIN-TO-SOURCE VOLTAGE (V) Source Drain Diode Forward Voltage ...

Page 4

MIC94050/94051 Typical Applications + Off +2.7V to 3.6V Li Coin Cell On B Off Figure 3. Reverse-Blocking Battery Back-Up Application MIC94050/94051 +5V MIC94050 G On Off 74HC04 * Substrate must be connected to ...

Page 5

MIC94050/94051 Package Information MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by ...

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