SiP4280A Slew Rate Controlled Load Switch
SiP4280A
Vishay Siliconix
Slew Rate Controlled Load Switch
APPLICATIONS
• Cellular telephones
• Digital still cameras
• Personal digital assistants (PDA)
• Hot swap supplies
• Notebook computers
• Personal communication devices
FEATURES
• 1.5 V to 5.5 V Input Voltage range
• Very Low RDS(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 transistor with typically 80 mΩ RDS(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 disabled.
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
SiP4280A
1 µF
0.1 µF
1
SiP4280A
Vishay Siliconix
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Steady State
VIN
- 0.3 to 6
Enable Input Voltage
VON
Output Voltage
VOUT
- 0.3 to 6
- 0.3 to VIN + 0.3
Supply Input Voltage
Thermal Resistance
SOT23-6L
IMAX
IDM
IDM
TJ
ΦJAa
Power Dissipation
SOT23-6Lb
PD
Maximum Switch Current
Maximum Pulsed Current
VIN ≥ 2.5
VIN < 2.5
Junction Temperature
Unit
V
2.3
6
3
A
- 40 to 150
°C
180
°C/W
440
mW
Notes:
a. Device mounted with all leads soldered or welded to PC board.
b. Derate 5.5 mW/°C above TA = 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
Symbol
VIN
Operating Temperature Range
Steady State
1.5 to 5.5
- 40 to 85
Unit
V
°C
SPECIFICATIONS
Parameter
Limits
Mina
Typb
Maxa
Unit
-
ISINK
0.01
0.01
80
85
100
160
2800
-
5.5
1
1
1
120
130
150
250
0.4
1
V
VIN = 1.8 V to 5.5 V
VIN = 1.5 V to 2.7 V
VIN = 2.7 V to < 4.2 V
VIN ≥ 4.2 V to 5.5 V
VON/OFF = 5.5 V
1.5
1.4
2
2.4
-
TD(ON)
TON
TD(OFF)
VIN = 5 V, RLOAD = 10 Ω, TA = 25 °C
VIN = 5 V, RLOAD = 10 Ω, TA = 25 °C
VIN = 5 V, RLOAD = 10 Ω, TA = 25 °C
-
20
1000
4
40
1500
10
TD(ON)
TON
TD(OFF)
RPD
VIN = 5 V, RLOAD = 10 Ω, TA = 25 °C
VIN = 5 V, RLOAD = 10 Ω, TA = 25 °C
VIN = 5 V, RLOAD = 10 Ω, TA = 25 °C
ON/OFF = inactive, TA = 25 °C
-
20
100
4
150
40
150
10
250
Symbol
SiP4280A All Versions
Operating Voltage
Quiescent Current
Off Supply Current
Off Switch Current
IQ(OFF)
ISD(OFF)
On-Resistance
RDS(ON)
On-Resistance Temp-Coefficient
ON/OFF Input Low Voltagec
TCRDS
VIL
ON/OFF Input High Voltage
VIH
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
Test Conditions Unless Specified
VIN = 5 V, TA = - 40 to 85 °C
VIN
IQ
ON/OFF = active
ON/OFF = inactive, OUT = open
ON/OFF = inactive, VOUT = 0
VIN = 5 V, TA = 25 °C
VIN = 4.2 V, TA = 25 °C
VIN = 3 V, TA = 25 °C
VIN = 1.8 V, TA = 25 °C
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.
d. For VIN ≤ 1.5 V see typical ON/OFF threshold curve.
2
µA
mΩ
ppm/°C
V
µA
µs
µs
Ω
SiP4280A
Vishay Siliconix
PIN CONFIGURATION
PIN DESCRIPTION
Pin Number
SOT23-6
Pin Name
4, 6
VIN
3
ON/OFF
2, 5
GND
Ground connection
1
OUT
This pin is the P-Channel MOSFET drain connection
Description
This pin is the P-Channel MOSFET source connection
Logic high enables the IC; logic low disables the IC
SELECTION GUIDE
Part Number
Slew Rate
(typ)
Active
Pull Down
Enable
SiP4280A-1-T1-E3
1 ms
No
Active High
SiP4280A-3-T1-E3
100 µs
Yes
Active High
Temperature Range
ORDERING INFORMATION
Part Number
Marking
SiP4280ADT-1-T1-E3
L4XX
SiP4280ADT-3-T1-E3
L6XX
- 40 °C to 85 °C
Package
SOT23-6L
SOT23-6L
3
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