SiP32510 Datasheet

SiP32510
Vishay Siliconix
1.2 V to 5.5 V, Slew Rate Controlled Load Switch in TSOT23-6
DESCRIPTION
FEATURES
SiP32510 is a slew rate controlled load switches designed for
1.2 V to 5.5 V operation.
The switch element is of n-channel device that provides low
RON of 44 m typically over a wide range of input.
SiP32510 has low switch on-resistance starting at 1.5 V input
supply. It features a controlled soft on slew rate of typical
1.6 ms that limits the inrush current for designs of heavy
capacitive load and minimizes the resulting voltage droop at
the power rails. With a typical turn on delay of 0.4 ms, the
total turn on time is typically 2 ms.
The SiP32510 features a low voltage control logic interface
(On/Off interface) that can interface with low voltage control
signals without extra level shifting circuit.
The SiP32510 has exceptionally low shutdown current and
provides reverse blocking to prevent high current flowing into
the power source.
SiP32510 integrates a switch OFF output discharge circuit.
SiP32510 is available in TSOT23-6 package.
•
•
•
•
•
1.2 V to 5.5 V operation voltage range
Flat low RON down to 1.5 V
44 m typical from 1.8 V to 5 V
Slew rate controlled turn-on: 1.6 ms at 3.3 V
Low quiescent current < 1 µA when disabled
Available
10.5 µA typical at VIN = 1.2 V
• Reverse current blocking when switch is off, with
guaranteed less than 2 µA leakage
• Material categorization: For definitions of compliance
please see www.vishay.com/doc?99912
APPLICATIONS
•
•
•
•
•
•
•
•
•
•
•
PDAs/smart phones
Ultrabook and notebook computer
Tablet devices
Portable media players
Digital camera
GPS navigation devices
Data storage devices
Optical, industrial, medical, and healthcare devices
Peripherals
Office automation
Networking
TYPICAL APPLICATION CIRCUIT
VIN
IN
OUT
VOUT
SiP32510
C IN
4.7 µF
C OUT
0.1 µF
EN
GND
EN
GND
GND
Figure 1 - SiP32510 Typical Application Circuit
ORDERING INFORMATION
Temperature Range
- 40 °C to 85 °C
Package
Marking
Part Number
TSOT23-6
LF
SiP32510DT-T1-GE3
Note:
GE3 denotes halogen-free and RoHS compliant
Document Number: 63577
S13-1533-Rev. C, 08-Jul-13
For technical questions, contact: [email protected]
www.vishay.com
1
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
SiP32510
Vishay Siliconix
ABSOLUTE MAXIMUM RATINGS
Parameter
Limit
Supply Input Voltage (VIN)
- 0.3 to 6
Enable Input Voltage (VEN)
- 0.3 to 6
Output Voltage (VOUT)
- 0.3 to 6
Maximum Continuous Switch Current (Imax.)c
Unit
V
3
Maximum Repetitive Pulsed Current (1 ms, 10 % Duty Cycle)c
Maximum Non-Repetitive Pulsed Current (100 µs, EN = Active)
6
c
A
12
ESD Rating (HBM)
>4
ESD Rating (CDM)
1.5
Junction Temperature (TJ)
kV
- 40 to 150
°C
Thermal Resistance (JA)
150
°C/W
Power Dissipation (PD)a,b
833
mW
a
Notes:
a. Device mounted with all leads and power pad soldered or welded to PC board, see PCB layout.
b. Derate 6.66 mW/°C above TA = 25 °C, see PCB layout.
c. TA = 25 °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
Parameter
Limit
Input Voltage Range (VIN)
Operating Junction Temperature Range (TJ)
Unit
1.2 to 5.5
V
- 40 to 125
°C
SPECIFICATIONS
Parameter
Operating Voltagec
Quiescent Current
Symbol
VIN
IQ
Test Conditions Unless Specified
VIN = 5 V, TA = - 40 °C to 85 °C
(Typical values are at TA = 25 °C)
Limits
- 40 °C to 85 °C
Min.a
1.2
Typ.b
-
Max.a
5.5
VIN = 1.2 V, EN = active
-
10.5
17
VIN = 1.8 V, EN = active
-
21
30
VIN = 2.5 V, EN = active
-
34
50
VIN = 3.6 V, EN = active
-
54
90
VIN = 4.3 V, EN = active
-
68
110
VIN = 5 V, EN = active
-
105
180
EN = inactive, OUT = open
-
-
1
Off Supply Current
IQ(off)
Off Switch Current
IDS(off)
EN = inactive, OUT = GND
-
-
1
IRB
VOUT = 5 V, VIN = 0 V, VEN = inactive
-
-
10
VIN = 1.8 V, IL = 100 mA, TA = 25 °C
-
45
53
VIN = 2.5 V, IL = 100 mA, TA = 25 °C
-
44
52
VIN = 3.6 V, IL = 100 mA, TA = 25 °C
-
44
52
VIN = 4.3 V, IL = 100 mA, TA = 25 °C
-
44
52
VIN = 5 V, IL = 100 mA, TA = 25 °C
-
46
52
-
3570
-
Reverse Blocking Current
On-Resistance
On-Resistance Temp.-Coefficient
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2
RDS(on)
TCRDS
For technical questions, contact: [email protected]
Unit
V
µA
m
ppm/°C
Document Number: 63577
S13-1533-Rev. C, 08-Jul-13
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
SiP32510
Vishay Siliconix
SPECIFICATIONS
Parameter
EN Input Low Voltagec
EN Input High Voltagec
Symbol
VIL
VIH
Test Conditions Unless Specified
VIN = 5 V, TA = - 40 °C to 85 °C
(Typical values are at TA = 25 °C)
Limits
- 40 °C to 85 °C
VIN = 1.2 V
Min.a
-
Typ.b
-
Max.a
0.3
VIN = 1.8 V
-
-
0.4d
VIN = 2.5 V
-
-
0.5d
VIN = 3.6 V
-
-
0.6d
VIN = 4.3 V
-
-
0.7d
VIN = 5 V
-
-
0.8d
VIN = 1.2 V
0.9d
-
-
VIN = 1.8 V
1.2d
-
-
VIN = 2.5 V
1.4d
-
-
VIN = 3.6 V
1.6d
-
-
VIN = 4.3 V
1.7d
-
-
VIN = 5 V
1.8
-
-
Unit
V
EN Input Leakage
ISINK
VEN = 5.5 V
-1
-
1
Output Pulldown Resistance
RPD
EN = inactive, TA = 25 °C
-
217
280

tON_RESP
VIN = 3.3 V, TA = 25 °C
-
20
200
µs
-
0.4
-
1.3
1.6
2.2
-
-
0.001
1.2
-
3
Switch Turn-On Response Time d
Output Turn-On Delay Time
(50 % EN to 10 % OUT)
td(on)
Output Turn-On Rise Time
(10 % OUT to 90 % OUT)
tr
Output Turn-Off Delay Time
(50 % EN to 90 % OUT)
td(off)
Output Turn-On Time
(50 % EN to 95 % OUT) e
t(on)
VIN = 3.3 V, RLOAD = 10 ,
CLOAD = 0.1 µF, TA = 25 °C
VIN = 3.3 V, RLOAD = 10 ,
CLOAD = 100 µF, TA = 25 °C
µA
ms
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 VIN outside this range consult typical EN threshold curve.
d. Not tested, guaranteed by design.
e. Not tested, guaranteed by correlation test with 10 , 0.1 µF load.
TIMMING WAVEFORMS
Figure 2 Document Number: 63577
S13-1533-Rev. C, 08-Jul-13
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This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
SiP32510
Vishay Siliconix
PIN CONFIGURATION
1
6
2
5
3
4
Top View
Figure 3 - TSOT23-6 Package
PIN DESCRIPTION
Pin Number
1, 2
3
4
5, 6
Name
OUT
EN
GND
IN
Function
These are output pins of the switch
Enable input
Ground connection
These are input pins of the switch
BLOCK DIAGRAM
Reverse
Blocking
OUT
IN
Charge
Pump
Control
Logic
EN
Turn On
Slew Rate Control
GND
Figure 4 - Functional Block Diagram
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For technical questions, contact: [email protected]
Document Number: 63577
S13-1533-Rev. C, 08-Jul-13
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
SiP32510
Vishay Siliconix
TYPICAL CHARACTERISTICS (internally regulated, 25 °C, unless otherwise noted)
140
120
VIN = 5 V
100
IQ - Quiescent Current (μA)
IQ - Quiescent Current (μA)
120
100
80
60
40
80
60
VIN = 3.6 V
40
20
20
VIN = 1.2 V
0
0
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
- 40
5.5
- 20
0
20
40
60
80
100
Temperature (°C)
VIN (V)
Figure 5 - Quiescent Current vs. Input Voltage
Figure 8 - Quiescent Current vs. Temperature
1.2
1000
100
1.0
IIQ(OFF) - Off Supply Current (nA)
IQ(OFF) - Off Supply Current (nA)
1.1
0.9
0.8
0.7
0.6
0.5
0.4
10
VIN = 5 V
1
VIN = 3.6 V
0.1
0.01
VIN = 1.2 V
0.3
0.2
0.001
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
- 40
- 20
0
VIN (V)
20
40
60
80
100
Temperature (°C)
Figure 6 - Off Supply Current vs. Input Voltage
Figure 9 - Off Supply Current vs. Temperature
1.2
1000
1.0
IDS(off) - Off Switch Current (nA)
IDS(off) - Off Switch Current (nA)
1.1
0.9
0.8
0.7
0.6
0.5
0.4
100
10
1
VIN = 5 V
VIN = 3.6 V
0.1
0.01
VIN = 1.2 V
0.3
0.2
0.001
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
- 20
0
20
40
60
80
100
Temperature (°C)
VIN (V)
Figure 7 - Off Switch Current vs. Input Voltage
Document Number: 63577
S13-1533-Rev. C, 08-Jul-13
- 40
Figure 10 - Off Switch Current vs. Temperature
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THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
SiP32510
Vishay Siliconix
TYPICAL CHARACTERISTICS (internally regulated, 25 °C, unless otherwise noted)
60
60
58
56
55
IO = 2.0 A
54
RDS - On-Resistance (mΩ)
RDS - On-Resistance (mΩ)
IO = 0.1 A
VIN = 5 V
IO = 2.5 A
IO = 1.5 A
IO = 1.0 A
52
IO = 0.1 A
50
48
46
44
50
45
40
42
40
35
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
- 40
- 20
0
VIN (V)
40
60
80
100
Temperature (°C)
Figure 11 - On-Resistance vs. Input Voltage
Figure 13 - On-Resistance vs. Temperature
800
235
VOUT = VIN
700
RPD - Output Pulldown Resistance (Ω)
RPD - Output Pulldown Resistance (Ω)
20
600
500
400
300
200
100
0
VOUT = VIN = 5 V
230
225
220
215
210
205
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
VIN (V)
- 20
0
20
40
60
80
100
Temperature (°C)
Figure 12 - Output Pulldown Resistance vs. Input Voltage
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- 40
Figure 14 - Output Pulldown Resistance vs. Temperature
For technical questions, contact: [email protected]
Document Number: 63577
S13-1533-Rev. C, 08-Jul-13
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
SiP32510
Vishay Siliconix
0
0.6
-2
0.5
td(on) - Turn-On Delay Time (ms)
IIN - Input Current (nA)
TYPICAL CHARACTERISTICS (internally regulated, 25 °C, unless otherwise noted)
-4
-6
VIN = 0V
-8
- 10
VIN = 5 V
CL = 0.1 μF
RL = 10 Ω
0.4
0.3
0.2
0.1
0
- 12
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
- 40
5.5
- 20
0
40
60
80
100
Temperature (°C)
VOUT (V)
Figure 15 - Reverse Blocking Current vs. Output Voltage
Figure 17 - Turn-On Delay Time vs. Temperature
0.20
2.50
VIN = 5 V
CL = 0.1 μF
RL = 10 Ω
2.30
VIN = 5 V
CL = 0.1 μF
RL = 10 Ω
0.18
td(off) - Turn-Off Delay Time (μs)
2.40
2.20
tr - Rise Time (ms)
20
2.10
2.00
1.90
1.80
1.70
0.16
0.14
0.12
0.10
0.08
1.60
1.50
0.06
- 40
- 20
0
20
40
60
80
100
- 40
- 20
Temperature (°C)
0
20
40
60
80
100
Temperature (°C)
Figure 16 - Rise Time vs. Temperature
Figure 18 - Turn-Off Delay Time vs. Temperature
1.6
1.5
EN Threshold Voltage (V)
1.4
1.3
1.2
VIH
1.1
1.0
VIL
0.9
0.8
0.7
0.6
0.5
1
1.5
2
2.5
3
3.5
VIN (V)
4
4.5
5
5.5
Figure 19 - EN Threshold Voltage vs. Input Voltage
Document Number: 63577
S13-1533-Rev. C, 08-Jul-13
For technical questions, contact: [email protected]
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This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
SiP32510
Vishay Siliconix
TYPICAL WAVEFORMS
EN
5Vout
EN
5Vout
3.6Vout
3.6Vout
1.5Vout
1.5Vout
Iout for 5Vout
Iout for 3.6Vout
Iout for 1.5Vout
2 V/Div, 2 A/Div, 2 ms/Div
Iout for 5Vout
Iout for 3.6Vout
Iout for 1.5Vout
2 V/Div, 2 A/Div, 2 s/Div
Figure 20 - Typical Turn-on Delay, Rise Time
COUT = 0.1 µF, CIN = 4.7 µF, IOUT = 1.5 A
Figure 23 - Typical Fall Time
COUT = 0.1 µF, CIN = 4.7 µF, IOUT = 1.5 A
EN
5Vout
EN
5Vout
3.6Vout
3.6Vout
1.5Vout
1.5Vout
Iout for 5Vout
Iout for 3.6Vout
Iout for 1.5Vout
2 V/Div, 0.2 A/Div, 2 ms/Div
Iout for 5Vout
Iout for 3.6Vout
Iout for 1.5Vout
2 V/Div, 0.2 A/Div, 2 s/Div
Figure 21 - Typical Turn-on Delay, Rise Time
COUT = 0.1 µF, CIN = 4.7 µF, ROUT = 10 
Figure 24 - Typical Fall Time
COUT = 0.1 µF, CIN = 4.7 µF, ROUT = 10 
EN
5Vout
5Vout
3.6Vout
3.6Vout
1.5Vout
1.5Vout
Iout for 5Vout
Iout for 5Vout
Iout for 3.6Vout
Iout for 3.6Vout
Iout for 1.5Vout
Iout for 1.5Vout
2 V/Div, 2 A/Div, 500 s /Div
2 V/Div, 2 A/Div, 2 ms/Div
Figure 22 - Typical Turn-on Delay, Rise Time
COUT = 200 µF, CIN = 4.7 µF, IOUT = 1.5 A
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EN
Figure 25 - Typical Fall Time
COUT = 200 µF, CIN = 4.7 µF, IOUT = 1.5 A
For technical questions, contact: [email protected]
Document Number: 63577
S13-1533-Rev. C, 08-Jul-13
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THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
SiP32510
Vishay Siliconix
EN
5Vout
EN
5Vout
3.6Vout
3.6Vout
1.5Vout
1.5Vout
Iout for 5Vout
Iout for 3.6Vout
Iout for 1.5Vout
2 V/Div, 0.2 A/Div, 2 ms/Div
Iout for 5Vout
Iout for 3.6Vout
Iout for 1.5Vout
2 V/Div, 0.2 A/Div, 2 ms/Div
Figure 26 - Typical Turn-on Delay, Rise Time
COUT = 200 µF, CIN = 4.7 µF, ROUT = 10 
Figure 29 - Typical Fall Time
COUT = 200 µF, CIN = 4.7 µF, ROUT = 10 
EN
5Vout
EN
5Vout
3.6Vout
3.6Vout
1.5Vout
1.5Vout
Iout for 5Vout
Iout for 5Vout
Iout for 3.6Vout
Iout for 3.6Vout
Iout for 1.5Vout
Iout for 1.5Vout
2 V/Div, 2 A/Div, 200 s /Div
2 V/Div, 2 A/Div, 2 ms/Div
Figure 27 - Typical Turn-on Delay, Rise Time
COUT = 100 µF, CIN = 4.7 µF, IOUT = 1.5 A
Figure 30 - Typical Fall Time
COUT = 100 µF, CIN = 4.7 µF, IOUT = 1.5 A
EN
5Vout
5Vout
3.6Vout
3.6Vout
1.5Vout
1.5Vout
Iout for 5Vout
Iout for 5Vout
Iout for 3.6Vout
Iout for 3.6Vout
Iout for 1.5Vout
Iout for 1.5Vout
2 V/Div, 0.2 A/Div, 1 ms/Div
2 V/Div, 0.2 A/Div, 2 ms/Div
Figure 28 - Typical Turn-on Delay, Rise Time
COUT = 100 µF, CIN = 4.7 µF, ROUT = 10 
Document Number: 63577
S13-1533-Rev. C, 08-Jul-13
EN
Figure 31 - Typical Turn-on Delay, Fall Time
COUT = 100 µF, CIN = 4.7 µF, ROUT = 10 
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SiP32510
Vishay Siliconix
DETAILED DESCRIPTION
SiP32510 is advanced slew rate controlled high side load
switch consisted of a n-channel power switch. When the
device is enable the gate of the power switch is turned on at
a controlled rate to avoid excessive in-rush current. Once
fully on the gate to source voltage of the power switch is
biased at a constant level. The design gives a flat on
resistance throughout the operating voltages. When the
device is off, the reverse blocking circuitry prevents current
from flowing back to input if output is raised higher than input.
The reverse blocking mechanism also works in case of no
input applied.
APPLICATION INFORMATION
Input Capacitor
SiP32510 does not require input capacitor. To limit the
voltage drop on the input supply caused by transient inrush
currents, a input bypass capacitor is recommended. A 2.2 µF
ceramic capacitor placed as close to the VIN and GND
should be enough. Higher values capacitor can help to
further reduce the voltage drop. Ceramic capacitors are
recommended for their ability to withstand input current
surge from low impedance sources such as batteries in
portable devices.
Output Capacitor
While these devices work without an output capacitor,
an 0.1 µF or larger capacitor across VOUT and GND is
recommended to accommodate load transient condition. It
also helps preventing parasitic inductance from forcing VOUT
below GND when switching off. Output capacitor has
minimal affect on device’s turn on slew rate time. There is no
requirement on capacitor type and its ESR.
Enable
The EN pin is compatible with both TTL and CMOS logic
voltage levels. Enable pin voltage can be above IN once it is
within the absolute maximum rating range.
The maximum power dissipation in any application is
dependant on the maximum junction temperature,
TJ(max.) = 125 °C, the junction-to-ambient thermal resistance
for the TSOT23-6 package, J-A = 150 °C/W, and the
ambient temperature, TA, which may be formulaically
expressed as:
P (max.)
=
T J (max.) - T A
θJ- A
=
125 - TA
150
It then follows that, assuming an ambient temperature of
70 °C, the maximum power dissipation will be limited to about
367 mW.
So long as the load current is below the 3 A limit, the
maximum continuous switch current becomes a function of
two things: the package power dissipation and the RDS(on) at
the ambient temperature.
As an example let us calculate the worst case maximum load
current at TA = 70 °C and 3.6 V input. The worst case RDS(on)
at 25 °C and 3.6 V input is 52 m. The RDS(on) at 70 °C can
be extrapolated from this data using the following formula:
RDS(on) (at 70 °C) = RDS(on) (at 25 °C) x (1 + TC x T)
Where TC is 3570 ppm/°C. Continuing with the calculation
we have
RDS(on) (at 70 °C) = 52 m x (1 + 0.00357 x (70 °C - 25 °C))
= 60 m
The maximum current limit is then determined by
P (max.)
I LOAD (max.) <
R DS(ON )
which in this case is 2.4 A. Under the stated input voltage
condition, if the 2.4 A current limit is exceeded the internal die
temperature will rise and eventually, possibly damage the
device.
Reverse
Blocking
Protection Against Reverse Voltage Condition
SiP32510 contains a reverse blocking circuitry to protect the
current from going to the input from the output in case where
the output voltage is higher than the input voltage when the
main switch is off. Reverse blocking works for input voltage
as low as 0 V.
Thermal Considerations
SiP32510 is designed to maintain a constant output load
current. Due to physical limitations of the layout and
assembly of the device the maximum switch current is 3 A,
as stated in the Absolute Maximum Ratings table. However,
another limiting characteristic for the safe operating load
current is the thermal power dissipation of the package. To
obtain the highest power dissipation (and a thermal
resistance of 150 °C/W) the IN and OUT pins of the device
should be connected to heat sinks on the printed circuit
board. All copper traces and vias for the IN and OUT pins
should be sized adequately to carry the maximum
continuous current.
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IN
OUT
Charge
Pump
Control Logic
Input Buffer
EN
Control and Drive
VOUT > VIN
Detect
Pull Down
Circuit
When VOUT is 0.8 V above the VIN, pull down circuit
will be activated. It connects the EN to GND with a
resistance of around 1 kΩ.
Active EN Pull Down for Reverse Blocking
When an internal circuit detects the condition of VOUT 0.8 V
higher than VIN, it will turn on the pull down circuit connected
to EN, forcing the switching OFF. The pull down value is
about 1 k..
For technical questions, contact: [email protected]
Document Number: 63577
S13-1533-Rev. C, 08-Jul-13
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
SiP32510
Vishay Siliconix
Pulse Current Capability
The device is mounted on the evaluation board shown in the
PCB layout section. It is loaded with pulses of 5 A and 1 ms
for periods of 4.6 ms.
5A
1 ms
180 mA
4.6 ms
The SiP32510 can safely support 5 A pulse current
repetitively at 25 °C.
Switch Non-Repetitive Pulsed Current
The SiP32510 can withstand inrush current of up to 12 A for
100 µs at 25 °C when heavy capacitive loads are connected
and the part is already enabled.
RDS(ON) Measurement
As mentioned in the thermal consideration section, the
RDS(ON) is an important specification for the load switch. A
proper method to measure the RDS(ON) will ensure the
proper calculation of the maximum operating power the
SiP32510 load switch. The Kelvin connection directly to the
input/output pin of the device is used to measure the dropout
voltage of the SiP32510. By using the Kelvin connection to
measure the dropout voltage will eliminate the measurement
error due to the voltage drop caused by the forced power
current. As illustrated in the following layout, J6 (OUT-S) is
Kelvin connection to the output of SiP32510 and J5 (IN-S) is
the Kelvin connection to the input of SiP32510. A current
meter is used to measure the output current.
RDS(ON) is calculated by the following formula:
RDS(on) =
Dropout Voltage
Output Current
Recommended Board Layout
For the best performance, all traces should be as short as
possible to minimize the inductance and parasitic effects.
The input and output capacitors should be kept as close
as possible to the input and output pins respectively.
Connecting the central exposed pad to GND, using wide
traces for input, output, and GND help reducing the case to
ambient thermal impedance.
Figure 32 - Evaluation Board Layout for TSOT23-6L
Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon
Technology and Package Reliability represent a composite of all qualified locations. For related documents such as package/tape drawings, part marking, and
reliability data, see www.vishay.com/ppg?63577.
Document Number: 63577
S13-1533-Rev. C, 08-Jul-13
For technical questions, contact: [email protected]
www.vishay.com
11
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
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Revision: 02-Oct-12
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Document Number: 91000