Micrel MIC94050BM4 4-terminal symfetâ ¢ p-channel mosfet Datasheet

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 pullup resistor that can reduce the system parts count in many
applications.
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
•
•
•
•
•
•
•
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.
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*
Package
Pb-FREE
MIC94050BM4
–40°C to +150°C
SOT-143
NO
MIC94051BM4
–40°C to +150°C
SOT-143
NO
MIC94050YM4
–40°C to +150°C
SOT-143
YES
MIC94051YM4
–40° to +150°C
SOT-143
YES
* Operating Junction Temperature
Pin Configuration
Drain
Part
Identification
Typical PCB Layout
Part Number
P5x
Gate
Source
PCB heat sin
k
plane improves
heat dissipation
SS
D
Substrate
Identification
MIC94050BM4
P50
MIC94051BM4
P51
MIC94050YM4
P50
MIC94051YM4
P51
SOT-143 Package (M4)
G
Schematic Symbol
S
PCB traces
Functional Diagrams
S
S
Gate
Source
~350kΩ
G
Substrate
Drain
SS
D
Schematic Symbol
MIC94050
G
Internal
gate-to-source
pull-up resistor
SS
D
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
MIC94050/94051
Micrel
Absolute Maximum Ratings
Operating Ratings
Drain-to-Source Voltage ............................................................ –6V
Gate-to-Source Voltage ................................................. –6V
Continuous Drain Current
TA = 25°C (VGS = 4.5V) ............................................ 1.8A
TA = 100°C (VGS = 4.5V) .......................................... 1.2A
Total Power Dissipation
TA = 25°C ............................................................. 568mW
TA = 100°C ........................................................... 227mW
Operating Junction Temperature .............. –40°C to +150°C
Storage Temperature ................................ –55°C to +150°C
ESD Rating, Note 2
Thermal Resistance
θJA...................................................................... 220°C/W
θJC ..................................................................... 130°C/W
Electrical Characteristics (Note 1)
Symbol
Parameter
VGS
Gate Threshold Voltage
IGSS
RGS
CISS
Gate-Body Leakage
Gate-Source Resistance
Input Capacitance
IDSS
Zero Gate Voltage Drain Current
RDS(ON)
Drain-Source On-Resistance
gFS
Forward Transconductance
Note 1.
Note 2.
Condition (Note 1)
Min
VDS = VGS, ID = –250µA
0.5
VDS = 0V, VGS = –4.5V, Note 2, Note 4
200
VDS = 0V, VGS = –4.5V, Note 2, Note 3
VGS = 0V, VDS = –5.5V
Typ
350
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
Units
1.2
V
1
µA
500
kΩ
600
VDS = –5.5V, VGS = 0V
VDS = –5.5V, VGS = 0V, TJ = 85°C
Max
pF
1
µA
5
µA
0.160
0.180
0.200
0.320
Ω
Ω
Ω
Ω
S
TA = 25°C unless noted. Substrate connected to source for all conditions.
ESD gate�
precautions required
Note 3.
MIC94050 only.
Note 4.
MIC94051 only.
Note 5.
Pulse Test: Pulse Width ≤ 80µs, Duty Cycle ≤ 0.5%.
MIC94050/94051
2
January 2007
MIC94050/94051
Micrel
Typical Characteristics
1000
900
800
3.5VGS
4
2.0VGS
3
2
1
1.5VGS
0
300
200
100
1.5
1
0.5
0
100µs Pulse
0
1
2
3
4
DRAIN-SOURCE CURRENT (A)
January 2007
GATE THRESHOLD (V)
DRAIN-SOURCE DIODE VF (V)
2
1.0
0.9
0.8
0.7
300
200
0
ID = –250µA
0.6
0.5
0.4
0.3
0.2
0.1
0.0
TEMPERATURE (°C)
4.2VGS
0
3.3VGS
1
2
3
DRAIN CURRENT (A)
4
RDS(ON) Variance
vs. Temperature
Gate Threshold
vs. Temperature
3
2.5VGS
100
ID = 100mA
0
1
2
3
4
5
6
GATE-TO-SOURCE VOLTAGE (V)
Source Drain Diode
Forward Voltage Drop
vs. Current
1.8VGS
400
0
0
1
2
3
4
5
DRAIN-TO-SOURCE VOLTAGE (V)
2.5
ID = 1A
RDS(ON)
vs. Drain Current
500
1.3
RDS(ON) (NORMALIZED)
2.5VGS
700
600
500
400
-60
-40
-20
0
20
40
60
80
100
120
140
160
3.0VGS
7
6
5
RDS(ON)(mΩ)
ID (A)
10
9
8
On-Resistance vs.
Gate-to-Source Voltage
RDS(ON) (mΩ)
Drain Characteristics
1.2
1.1
1
0.9
0.8
V =3.6V
DS
ID=0.1A
0.7
-40 -15 10 35 60 85 110 135
TEMPERATURE (°C)
MIC94050/94051
MIC94050/94051
Micrel
Typical Applications
SS*
+5V
MIC94050
D
G
On
Off
Load
S
74HC04
* Substrate must be
connected to source
Figure 1. Load Switch Application
+5V
Internal
Resistor
Open Drain
Output
G
D
SS*
Load
MIC94051
S
* Substrate must be
connected to source
Figure 2. Load Switch Application
(with internal gate-source pull-up)
SS
A
S
MIC94050
G
On
Off
+2.7V to 3.6V
Li Coin Cell
A
Off
On
Off
On
B
Off
Off
On
On
Output
0V
+4V
Li Coin Cell
don’t!
2MΩ S S
S
MIC94050
B
D
Load
+4V
D
G
On
Off
Figure 3. Reverse-Blocking Battery Back-Up Application
MIC94050/94051
4
January 2007
MIC94050/94051
Micrel
Package Information
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
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