Product is End of Life 12/2014
SiP4280A
Vishay Siliconix
Slew Rate Controlled Load Switch
FEATURES
•
1.5 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
- SiP4280A-1: 1 ms
- SiP4280A-3: 100 µs
• Fast shutdown load discharge option
• Low quiescent current
< 25 nA (typ)
• 4 kV ESD Rating
• 6 pin SOT23 package
DESCRIPTION
The SiP4280A is a P-Channel MOSFET power switch
designed for high-side load switching applications. The
output pass transistor is a P-Channel MOSFET tran-
sistor with typically 80 mΩ R
DS(ON)
. The SiP4280A is
available in two different versions of turn-on times. The
SiP4280A-1 version has a slew rate limited turn-on
time typically of 1 ms. The SiP4280A-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.
APPLICATIONS
• Cellular telephones
• Digital still cameras
• Personal digital assistants (PDA)
• Hot swap supplies
• Notebook computers
• Personal communication devices
Both SiP4280A load switch versions operate with an
input voltage ranging from 1.5 V to 5.5 V, making them
ideal for both 3 V and 5 V applications. The SiP4280A
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 25 nA. In shutdown mode, the supply current
decreases to less than 1.0 µA.
The SiP4280A is available in a 6 pin SOT23 package
and is specified over - 40 °C to 85 °C temperature
range.
TYPICAL APPLICATION CIRCUIT
VIN
VIN
OUT
VOUT
SiP4280A
SiP4280A
C
IN
µF
1
1
µF
C
OUT
0.1 µF
µF
1
1
µF
GND
ON
ON/OFF
GND
GND
Document Number: 73602
S-61772–Rev. C, 11-Sep-06
www.vishay.com
1
SiP4280A
Vishay Siliconix
ABSOLUTE MAXIMUM RATINGS
Parameter
Supply Input Voltage
Enable Input Voltage
Output Voltage
Maximum Switch Current
Maximum Pulsed Current
Junction Temperature
Thermal Resistance
Power Dissipation
SOT23-6L
SOT23-6L
b
Symbol
V
IN
V
ON
V
OUT
V
IN
≥
2.5
V
IN
<
2.5
I
MAX
I
DM
I
DM
T
J
Φ
JAa
P
D
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
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
1.5 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
1.5
-
-
-
-
-
-
-
-
0.4
-
-
-
-
-
-
-
-
-
-
-
Typ
b
-
0.01
0.01
80
85
100
160
2800
-
-
-
-
-
20
1000
4
20
100
4
150
Max
a
5.5
1
1
1
120
130
150
250
-
-
1.4
2
2.4
1
40
1500
10
40
150
10
250
Unit
V
µA
Parameter
SiP4280A All Versions
Operating Voltage
Quiescent Current
Off Supply Current
Off Switch Current
Symbol
V
IN
I
Q
I
Q(OFF)
I
SD(OFF)
R
DS(ON)
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
On-Resistance
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
= 1.8 V to 5.5 V
V
IN
= 1.5 V to 2.7 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
mΩ
On-Resistance Temp-Coefficient
ON/OFF Input Low Voltage
c
ppm/°C
ON/OFF Input High Voltage
ON/OFF Input Leakage
SiP4280A-1 Version
Output Turn-On Delay Time
Output Turn-On Rise Time
Output Turn-Off Delay Time
SiP4280A-3 Version
Output Turn-On Delay Time
Output Turn-On Rise Time
Output Turn-Off Delay Time
Output Pull-Down Resistance
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. For V
IN
≤
1.5 V see typical ON/OFF threshold curve.
www.vishay.com
2
Document Number: 73602
S-61772–Rev. C, 11-Sep-06
SiP4280A
Vishay Siliconix
PIN CONFIGURATION
PIN DESCRIPTION
Pin Number
SOT23-6
4, 6
3
2, 5
1
Pin Name
V
IN
ON/OFF
GND
OUT
Description
This pin is the P-Channel MOSFET source connection
Logic high enables the IC; logic low disables the IC
Ground connection
This pin is the P-Channel MOSFET drain connection
SELECTION GUIDE
Part Number
SiP4280A-1-T1-E3
SiP4280A-3-T1-E3
Slew Rate
(typ)
1 ms
100 µs
Active
Pull Down
No
Yes
Enable
Active High
Active High
ORDERING INFORMATION
Part Number
SiP4280ADT-1-T1-E3
SiP4280ADT-3-T1-E3
Marking
L4XX
L6XX
Temperature Range
- 40 °C to 85 °C
Package
SOT23-6L
SOT23-6L
Document Number: 73602
S-61772–Rev. C, 11-Sep-06
www.vishay.com
3
SiP4280A
Vishay Siliconix
TYPICAL CHARACTERISTICS
internally regulated, 25 °C unless noted
90
80
70
60
r
DS(O
N
)
(mΩ)
I
Q
(nA)
50
40
30
20
10
0
- 40
V
IN
= 3
V
- 20
0
20
40
60
80
100
V
IN
= 5
V
250
230
210
190
170
150
130
110
90
70
50
1.5
100 mA
500 mA
2A
1A
2.0
2.5
3.0
3.5
V
IN
(V)
4.0
4.5
5.0
5.5
Temperature (°C)
Quiescent Current vs. Temperature
140
130
O
N
/OFF Threshold (
V
)
120
r
DS(O
N
)
(mΩ)
110
100
90
80
70
60
- 40
V
=3
V
V
=5
V
2.2
2.0
1.8
1.6
1.4
1.2
V
IH
1.0
0.8
0.6
0.4
1.5
R
DS(ON)
vs. Input Voltage
V
IL
- 25
0
25
50
75
85
2.0
2.5
3.0
3.5
V
IN
(V)
4.0
4.5
5.0
5.5
Temperature (°C)
R
DS(ON)
vs. Temperature
1.0
ON/OFF Threshold vs. Input Voltage
0.8
IoffS
W
(µA)
0.6
0.4
0.2
0.0
- 40
- 20
0
20
40
60
80
100
Temperature (°C)
Off Switch Current vs. Temperature
www.vishay.com
4
Document Number: 73602
S-61772–Rev. C, 11-Sep-06
SiP4280A
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)
SiP4280A-1 Turn-On (V
IN
= 3 V, R
LOAD
= 6
Ω)
SiP4280A-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)
SiP4280A-1 Turn-On (V
IN
= 5 V, R
LOAD
= 10
Ω)
SiP4280A-1 Turn-Off (V
IN
= 5 V, R
LOAD
= 10
Ω)
Document Number: 73602
S-61772–Rev. C, 11-Sep-06
www.vishay.com
5
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