Product is End of Life 12/2014
SiP4280
Vishay Siliconix
Slew Rate Controlled Load Switch
FEATURES
•
1.8 V to 5.5 V Input Voltage range
• Very Low R
DS(ON)
, typically 80 mΩ (5 V)
• Slew rate limited turn-on time options
- SiP4280-1: 1 ms
- SiP4280-3: 100 µs
• Fast shutdown load discharge option
• Low quiescent current
• 4 kV ESD Rating
• 6 pin SOT23 package
DESCRIPTION
The SiP4280 is a P-Channel MOSFET power switch
designed for high-side load switching applications.
The output pass transistor is a P-Channel MOSFET
transistor with typically 80 mΩ R
DS(ON)
. The SiP4280
is available in two different versions of turn-on times.
The SiP4280-1 version has a slew rate limited turn-on
time typically of 1 ms. The SiP4280-3 version has a
slew rate limited turn-on time typically of 100 µs and
additionally offers a shutdown load discharge circuit to
rapidly turn off a load circuit when the switch is dis-
abled.
Both SiP4280 load switch versions operate with an
TYPICAL APPLICATION CIRCUIT
input voltage ranging from 1.8 V to 5.5 V, making them
ideal for both 3 V and 5 V applications. The SiP4280
also features an under-voltage lock out which turns
the switch off when an input undervoltage condition
exists. Input logic levels are TTL and 2.5 V to 5.0 V
CMOS compatible. The quiescent supply current is
very low, typically 2.5 µA. In shutdown mode, the sup-
ply current decreases to less than 1.0 µA.
The SiP4280 is available in a 6 pin SOT23 package
and is specified over - 40 °C to 85 °C temperature
range
.
APPLICATIONS
• Cellular telephones
• Digital still cameras
• Personal digital assistants (PDA)
• Hot swap supplies
• Notebook computers
• Personal communication devices
VIN
VIN
OUT
VOUT
C
IN
1 µF
ON
ON/OFF
GND
C
OUT
0.1 µF
GND
GND
Document Number: 73476
S-61690–Rev. D, 04-Sep-06
www.vishay.com
1
SiP4280
Vishay Siliconix
ABSOLUTE MAXIMUM RATINGS
Parameter
Supply Input Voltage
Enable Input Voltage
Output Voltage
Maximum Switch Current
Maximum Pulsed Current
V
IN
≥
2.5
V
IN
<
2.5
Symbol
V
IN
V
ON
V
OUT
I
MAX
I
DM
I
DM
T
J
Φ
JA
P
D
a
Steady State
- 0.3 to 6
- 0.3 to 6
- 0.3 to V
IN
+ 0.3
2.3
6
3
- 40 to 150
180
440
Unit
V
A
°C
°C/W
mW
Junction Temperature
Thermal Resistance
SOT23-6L
Power Dissipation
SOT23-6L
b
Notes:
a. Device mounted with all leads soldered or welded to PC board.
b. Derate 5.5 mW/°C above T
A
= 70 °C.
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only,
and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is
not implied. Exposure to absolute maximum rating/conditions for extended periods may affect device reliability.
RECOMMENDED OPERATING RANGE
all voltages referenced to GND = 0 V
Parameter
Operating Temperature Range
Symbol
V
IN
Steady State
1.8 to 5.5
- 40 to 85
Unit
V
°C
SPECIFICATIONS
Test Conditions Unless Specified
V
IN
= 5 V, T
A
= - 40 to + 85 °C
Limits
Min
a
1.8
1.0
-
-
-
-
-
-
-
-
-
-
2
2.4
-
-
-
-
-
-
-
-
Typ
b
-
1.4
250
2.5
0.01
0.01
80
85
100
160
2800
-
-
-
-
20
1000
4
20
100
4
150
Max
a
5.5
1.8
-
4
1
1
120
130
150
250
-
0.8
-
-
1
40
1500
10
40
150
10
250
Unit
Parameter
SiP4280 All Versions
Operating Voltage
c
Undervoltage Lockout
Undervoltage Lockout Hysteresis
Quiescent Current
Off Supply Current
Off Switch Current
Symbol
V
IN
V
UVLO
V
UVLO(hyh)
I
Q
I
Q(OFF)
I
SD(OFF)
R
DS(ON)
V
IN
Falling
ON/OFF = active
ON/OFF = inactive, OUT = open
ON/OFF = inactive, V
OUT
= 0
V
IN
= 5 V, T
A
= 25 °C
V
IN
= 4.2 V, T
A
= 25 °C
V
IN
= 3 V, T
A
= 25 °C
V
IN
= 1.8 V, T
A
= 25 °C
V
IN
= 2.7 V to 5.5 V
V
IN
= 2.7 V to
≤
4.2 V
V
IN
> 4.2 V to 5.5 V
V
ON/OFF
= 5.5 V
V
IN
= 5 V, R
LOAD
= 10
Ω,
T
A
= 25 °C
V
IN
= 5 V, R
LOAD
= 10
Ω,
T
A
= 25 °C
V
IN
= 5 V, R
LOAD
= 10
Ω,
T
A
= 25 °C
V
IN
= 5 V, R
LOAD
= 10
Ω,
T
A
= 25 °C
V
IN
= 5 V, R
LOAD
= 10
Ω,
T
A
= 25 °C
V
IN
= 5 V, R
LOAD
= 10
Ω,
T
A
= 25 °C
ON/OFF = inactive, T
A
= 25 °C
V
mV
µA
On-Resistance
mΩ
On-Resistance Temp-Coefficient
ON/OFF Input Low Voltage
d
ON/OFF Input High Voltage
ON/OFF Input Leakage
SiP4280-1 Version
Output Turn-On Delay Time
Output Turn-On Rise Time
Output Turn-Off Delay Time
SiP4280-3 Version
Output Turn-On Delay Time
Output Turn-On Rise Time
Output Turn-Off Delay Time
Output Pull-Down Resistance
TC
RDS
V
IL
V
IH
I
SINK
T
D(ON)
T
ON
T
D(OFF)
T
D(ON)
T
ON
T
D(OFF)
R
PD
ppm/°C
V
µA
µS
µS
Ω
Notes:
a. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum.
b. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
c. Part requires minimum start-up of V
IN
≥
2.0 to ensure operation down to 1.8 V.
d. For V
IN
≤
2.7 V see typical ON/OFF threshold curve.
www.vishay.com
2
Document Number: 73476
S-61690–Rev. D, 04-Sep-06
SiP4280
Vishay Siliconix
PIN CONFIGURATION
SOT23-6
Top
View
O
OUT
GND
ON/OFF
1
2
3
6
5
4
VIN
GND
VIN
PIN DESCRIPTION
Pin Number Pin Name
SOT23-6
4, 6
3
2, 5
1
VIN
ON/OFF
GND
OUT
Symbol
This pin is the P-channel MOSFET source connection
Logic high enables the IC; logic low disables the IC and reduces the IC and reduces the quiescent current to 2.5 µA
Ground connection
This pin is the P-channel MOSFET drain connection
SELECTION GUIDE
Part Number
SiP4280-1-T1-E3
SiP4280-3-T1-E3
Slew Rate
(typ)
1 ms
100 µs
Active
Pull Down
No
Yes
Enable
Active High
Active High
ORDERING INFORMATION
Part Number
SiP4280DT-1-T1-E3
SiP4280DT-3-T1-E3
Marking
L1XXX
L3XXX
Temperature Range
- 40 °C to 85 °C
Package
SOT23-6L
SOT23-6L
Document Number: 73476
S-61690–Rev. D, 04-Sep-06
www.vishay.com
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SiP4280
Vishay Siliconix
TYPICAL CHARACTERISTICS
internally regulated, 25 °C unless noted
4.0
3.5
3.0
2.5
I
Q
(µA)
2.0
1.5
1.0
0.5
0.0
- 40
V
IN
= 3
V
V
=5
V
3.5
3.0
Q
u
iescent C
u
rrent (µA)
50
75
85
2.5
2.0
1.5
1.0
0.5
0.0
- 25
0
25
0
1
2
3
V
IN
(V)
4
5
6
Temperature (°C)
Quiescent Current vs. Temperature
250
230
210
190
r
DS(O
N
)
(mΩ)
170
150
130
110
90
70
50
1.5
100 mA
80
70
60
- 40
500 mA
2A
120
1A
r
DS(O
N
)
(mΩ)
110
140
130
Quiescent Current vs. Input Voltage
V
=3
V
V
=5
V
100
90
2.0
2.5
3.0
3.5
V
IN
(V)
4.0
4.5
5.0
5.5
- 25
0
25
50
75
85
Temperature (°C)
R
DS(ON)
vs. Input Voltage
2.2
2.0
1.8
O
N
/OFF Threshold (
V
)
1.6
1.4
1.2
V
IH
1.0
0.8
0.6
0.4
1.5
V
IL
IoffS
W
(µA)
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
- 40
R
DS(ON)
vs. Temperature
2.0
2.5
3.0
3.5
V
IN
(V)
4.0
4.5
5.0
5.5
- 25
0
25
50
75
100
85
Temperature (°C)
ON/OFF Threhold vs. Input Voltage
Off Switch Current vs. Temperature
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Document Number: 73476
S-61690–Rev. D, 04-Sep-06
SiP4280
Vishay Siliconix
TYPICAL WAVEFORMS
ON/OFF (5
V/div.)
ON/OFF (5
V/div.)
V
OUT
(2
V/div.)
V
OUT
(2
V/div.)
I
IN
(200 mA/div.)
I
IN
(200 mA/div.)
Time (500
µs/div)
Time (5
µs/div)
SiP4280-1 Turn-On (V
IN
= 3 V, R
LOAD
= 6
Ω)
SiP4280-1 Turn-Off (V
IN
= 3 V, R
LOAD
= 6
Ω)
ON/OFF (5
V/div.)
ON/OFF (5
V/div.)
V
OUT
(2
V/div.)
V
OUT
(2
V/div.)
I
IN
(200 mA/div.)
I
IN
(200 mA/div.)
Time (500
µs/div)
Time (5
µs/div)
SiP4280-1 Turn-On (V
IN
= 5 V, R
LOAD
= 10
Ω)
SiP4280-1 Turn-Off (V
IN
= 5 V, R
LOAD
= 10
Ω)
Document Number: 73476
S-61690–Rev. D, 04-Sep-06
www.vishay.com
5
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