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

MIC94050/94051
Micrel
MIC94050/94051
4-Terminal TinyFET™ P-Channel MOSFET
Final
General Description
Features
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 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.
• 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
Pin Configuration
Typical PCB Layout
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
Temperature Range*
Package
MIC94050BM4
–40°C to +150°C
SOT-143
MIC94051BM4
–40°C to +150°C
SOT-143
* Operating Junction Temperature
PCB heat sink
plane improves
heat dissipation
D
Drain
Substrate
SS
Part Number
Part
Identification
P5x
Gate
Identification
MIC94050BM4
P50
MIC94051BM4
P51
Source
SOT-143 Package (M4)
G
Schematic Symbol
S
PCB traces
Functional Diagrams
S
S
~350kΩ
Source
Gate
G
Substrate
SS
Drain
D
Schematic Symbol
MIC94050
G
Internal
gate-to-source
pull-up resistor
SS
D
MIC94051
TinyFET 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
July 2002
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
Condition (Note 1)
Min
VGS
Gate Threshold Voltage
VDS = VGS, ID = –250µA
0.5
IGSS
Gate-Body Leakage
VDS = 0V, VGS = –4.5V, Note 2, Note 3
RGS
Gate-Source Resistance
VDS = 0V, VGS = –4.5V, Note 2, Note 4
CISS
Input Capacitance
VGS = 0V, VDS = –5.5V
IDSS
Zero Gate Voltage Drain Current
VDS = –5.5V, VGS = 0V
1
µA
VDS = –5.5V, VGS = 0V, TJ = 85°C
5
µA
0.160
0.180
0.200
0.280
Ω
Ω
Ω
Ω
RDS(ON)
Drain-Source On-Resistance
VGS = –4.5V, ID = –100mA
VGS = –3.6V, ID = –100mA
VGS = –2.5V, ID = –100mA
VGS = –1.8V, ID = –100mA
gFS
Forward Transconductance
VDS = –5.5V, ID = –200mA, Note 5
200
Typ
350
Max
Units
1.2
V
1
µA
500
kΩ
600
0.125
0.135
0.165
0.225
pF
3
S
Note 1.
TA = 25°C unless noted. Substrate connected to source for all conditions.
Note 2.
ESD gate protection diode conducts during positive gate-to-source voltage excursions. IC devices are inherently ESD sensitive. Handling
precautions required
Note 3.
MIC94050 only.
Note 4.
MIC94051 only.
Note 5.
Pulse Test: Pulse Width ≤ 80µs, Duty Cycle ≤ 0.5%.
MIC94050/94051
2
July 2002
MIC94050/94051
Micrel
Typical Characteristics
2.5VGS
4
3
2.0VGS
2
1
1.5VGS
0
0.5
0
July 2002
100µs Pulse
0
1
2
3
4
DRAIN-SOURCE CURRENT (A)
2.5VGS
200
100
4.2VGS
0
0
1.0
ID = –250µA
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
TEMPERATURE (°C)
3
3.3VGS
1
2
3
DRAIN CURRENT (A)
4
RDS(ON) Variance
vs. Temperature
Gate Threshold
vs. Temperature
GATE THRESHOLD (V)
DRAIN-SOURCE DIODE VF (V)
1
300
ID = 100mA
0
1
2
3
4
5
6
GATE-TO-SOURCE VOLTAGE (V)
Source Drain Diode
Forward Voltage Drop
vs. Current
1.5
400
300
0
0
1
2
3
4
5
DRAIN-TO-SOURCE VOLTAGE (V)
2
600
500
200
100
1.8VGS
400
ID = 1A
1.3
RDS(ON) (NORMALIZED)
6
5
800
700
-60
-40
-20
0
20
40
60
80
100
120
140
160
ID (A)
3.0VGS
RDS(ON)(mΩ)
3.5VGS
2.5
500
1000
900
RDS(ON) (mΩ)
10
9
8
7
RDS(ON)
vs. Drain Current
On-Resistance vs.
Gate-to-Source Voltage
Drain Characteristics
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)
MIC94050/94051
MIC94050/94051
Micrel
Typical Applications
SS*
S
D
G
On
Off
Load
+5V
MIC94050
74HC04
* Substrate must be
connected to source
Figure 1. Load Switch Application
+5V
G
MIC94051
S
SS*
D
Load
Open Drain
Output
Internal
Resistor
* Substrate must be
connected to source
Figure 2. Load Switch Application
(with internal gate-source pull-up)
SS
+4V
MIC94050
A
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 SS
S
MIC94050
B
D
Load
S
D
G
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
1.40 (0.055) 2.50 (0.098)
1.20 (0.047) 2.10 (0.083)
CL
CL
DIMENSIONS:
MM (INCH)
1.12 (0.044)
0.81 (0.032)
3.05 (0.120)
2.67 (0.105)
8°
0°
0.10 (0.004)
0.013 (0.0005)
0.800 (0.031) TYP
0.400 (0.016) TYP 3 PLACES
0.150 (0.0059)
0.089 (0.0035)
0.41 (0.016)
0.13 (0.005)
SOT-143 (M4)
MICREL, INC.
TEL
1849 FORTUNE DRIVE SAN JOSE, CA 95131
+ 1 (408) 944-0800
FAX
+ 1 (408) 944-0970
WEB
USA
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.
© 2002 Micrel, Incorporated
July 2002
5
MIC94050/94051
Similar pages