SiP32413, SiP32414, SiP32416 Datasheet

SiP32413, SiP32414, SiP32416
Vishay Siliconix
Dual 2 A, 1.2 V, Slew Rate Controlled Load Switch
DESCRIPTION
FEATURES
SiP32413, SiP32414 and SiP32416 are slew rate controlled
load switches that is designed for 1.1 V to 5.5 V operation.
The devices guarantee low switch on-resistance at 1.2 V
input. SiP32413 and SiP32414 feature a controlled soft-on
slew rate of typical 150 µs that limits the inrush current for
designs of capacitive load or noise sensitive loads. SiP32416
features a longer slew rate of typical 2.5 ms to keep the peak
of the inrush current even lower.
The devices feature a low voltage control logic interface
(On/Off interface) that can interface with low voltage digital
control without extra level shifting circuit. The SiP32414 and
SiP32416 also integrate output discharge switches that
enable fast shutdown load discharge. When the switches are
off, they provide the reverse blocking to prevent high current
flowing into the power source.
All SiP32413, SiP32414 and SiP32416 are available in
TDFN8 2 mm x 2 mm package. Each switch in each device
can support over 2 A of continuous current.
• Halogen-free according to IEC 61249-2-21
definition
• 1.1 V to 5.5 V operation voltage range
• 62 m typical from 2 V to 5 V
• Low RON down to 1.2 V
• Slew rate controlled turn-on:
150 µs at 3.6 V for SiP32413, SiP32414
2.5 ms at 3.6 V for SiP32416
• Fast shutdown load discharge for SiP32414 and
SiP32416
• Low quiescent current
< 1 µA when disabled
6.7 µA at VIN = 1.2 V
• Switch off reversed blocking
• Compliant to RoHS Directive 2002/95/EC
APPLICATIONS
•
•
•
•
•
•
Cellular phones
Portable media players
Digital camera
GPS
Computers
Portable instruments and healthcare devices
TYPICAL APPLICATION CIRCUIT
VIN
IN
OUT
VOUT
SiP32413, SiP32414, SiP32416
(for one switch)
C IN
4.7 µF
C OUT
0.1 µF
CNTRL
CNTRL
GND
GND
GND
Figure 1 - SiP32413, SiP32414, SiP32416 Typical Application Circuit
Document Number: 71437
S11-2472-Rev. B, 19-Dec-11
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SiP32413, SiP32414, SiP32416
Vishay Siliconix
ORDERING INFORMATION
Temperature Range
- 40 °C to 85 °C
Package
TDFN8
2 mm x 2 mm
Marking
Part Number
AA
SiP32413DNP-T1-GE4
AB
SiP32414DNP-T1-GE4
AG
SiP32416DNP-T1-GE4
Note:
GE4 denotes halogen-free and RoHS compliant
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.)
Unit
V
2.4
Maximum Pulsed Current (Pulsed at 1 ms, 10 % Duty Cycle)
A
3
ESD Rating (HBM)
4000
V
Storage Temperature (Tstg)
- 65 to 150
°C
Thermal Resistance (JA)a
95
°C/W
Power Dissipation (PD)a, b
580
mW
Notes:
a. Device mounted with all leads and power pad soldered or welded to PC board, see PCB layout.
b. Derate 10.5 mW/°C above TA = 70 °C, see PCB layout.
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
Input Voltage Range (VIN)
Operating Junction Temperature Range (TJ)
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Limit
Unit
1.1 to 5.5
V
- 40 to 125
°C
Document Number: 71437
S11-2472-Rev. B, 19-Dec-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
SiP32413, SiP32414, SiP32416
Vishay Siliconix
SPECIFICATIONS
Parameter
Operating Voltagec
Symbol
VIN
Quiescent Current
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
1.1
Typ.b
-
Max.a
5.5
VIN = 1.2 V, CNTRL = active
-
6.7
14
VIN = 1.8 V, CNTRL = active
-
14
24
VIN = 2.5 V, CNTRL = active
-
25
40
VIN = 3.6 V, CNTRL = active
-
40
60
VIN = 4.3 V, CNTRL = active
-
52
75
VIN = 5 V, CNTRL = active
-
71
99
Off Supply Current
IQ(off)
CNTRL = inactive, OUT = open
-
-
1
Off Switch Current
IDS(off)
CNTRL = inactive, OUT = 0
-
-
1
IRB
VOUT = 5 V, VIN = 1.2 V, VEN = inactive
-
-
10
VIN = 1.2 V, IL = 100 mA, TA = 25 °C
-
66
76
Reverse Blocking Current
On-Resistance
RDS(on)
On-Resistance Temp.-Coefficient
CNTRL Input Low Voltagec
CNTRL Input High Voltage
Output Pulldown Resistance
Output Turn-On Delay Time
Output Turn-On Rise Time
Output Turn-Off Delay Time
SiP32413,
SiP32414
Output Turn-On Delay Time
Output Turn-On Rise Time
Output Turn-Off Delay Time
72
62
72
VIN = 3.6 V, IL = 100 mA, TA = 25 °C
-
62
72
VIN = 4.3 V, IL = 100 mA, TA = 25 °C
-
62
72
VIN = 5 V, IL = 100 mA, TA = 25 °C
-
62
72
-
3900
-
VIN = 1.2 V
-
-
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
-
m
ppm/°C
-
0.8d
VIN = 1.2 V
0.9
-
-
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
-
-
ISINK
VEN = 5.5 V
-
-
1
µA
RPD
CNTRL = inactive, TA = 25 °C
(SiP32414 and SiP32416 only)
-
217
280

td(on)
-
140
210
t(on)
80
150
220
-
0.27
1
td(off)
VIN = 3.6 V, RLOAD = 10 ,
CLOAD = 0.1 µF, TA = 25 °C
-
2
-
t(on)
1.2
2.5
3.8
td(off)
-
-
0.001
td(on)
SiP32416
62
-
µA
d
VIH
EN Input Leakage
-
TCRDS
VIL
c
VIN = 1.8 V, IL = 100 mA, TA = 25 °C
VIN = 2.5 V, IL = 100 mA, TA = 25 °C
Unit
V
V
µs
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, guarantee by design.
Document Number: 71437
S11-2472-Rev. B, 19-Dec-11
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SiP32413, SiP32414, SiP32416
Vishay Siliconix
PIN CONFIGURATION
OUT1 8
1
IN1
GND 7
2
CNTRL1
GND 6
3
CNTRL2
OUT2 5
4
IN2
Bottom View
Figure 2 - TDFN8 2 mm x 2 mm Package
PIN DESCRIPTION
Pin Number
Name
1
IN1
Function
2
CNTRL1
This is the control pin of the switch side 1
3
CNTRL2
This is the control pin of the switch side 2
4
IN2
5
OUT2
This is the output pin of the switch side 2
6
GND
Ground connection
7
GND
Ground connection
8
OUT1
This is the output pin of the switch side 1
This is the input pin of the switch side 1
This is the input pin of the switch side 2
TRUTH TABLE SiP32413
TRUTH TABLE SiP32414, SiP32416
CNTRL1
CNTRL2
SW1
SW2
CNTRL1
CNTRL2
SW1
SW2
0
0
ON
OFF
0
0
OFF
OFF
0
1
ON
ON
0
1
OFF
ON
1
0
OFF
OFF
1
0
ON
OFF
1
1
OFF
ON
1
1
ON
ON
TYPICAL CHARACTERISTICS (internally regulated, 25 °C, unless otherwise noted)
100
90
80
IQ - Quiescent Current (µA)
IQ - Quiescent Current (µA)
80
60
40
20
VIN = 5 V
70
60
50
VIN = 3.6 V
40
30
20
VIN = 1.2 V
10
0
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
VIN (V)
Figure 3 - Quiescent Current vs. Input Voltage
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4
0
- 40
- 20
0
20
40
60
80
100
Temperature (°C)
Figure 4 - Quiescent Current vs. Temperature
Document Number: 71437
S11-2472-Rev. B, 19-Dec-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
SiP32413, SiP32414, SiP32416
Vishay Siliconix
TYPICAL CHARACTERISTICS (internally regulated, 25 °C, unless otherwise noted)
100
0.7
SiP32413
SiP32413
IQ(off) - Off Switch Current (nA)
IQ(off) - Off Supply Current (nA)
0.6
0.5
0.4
0.3
0.2
10
1
0.1
VIN = 5 V
VIN = 3.6 V
VIN = 1.2 V
0.01
0.1
0
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0.001
- 40
5.5
0
20
40
60
80
100
VIN (V)
Temperature (°C)
Figure 5 - SiP32413 Off Supply Current vs. VIN
Figure 6 - SiP32414 Off Supply Current vs. Temperature
1.4
1000
SiP32414
SiP32416
IQ(OFF) - Off Supply Current (nA)
1.2
IQ(OFF) - Off Supply Current (nA)
- 20
1.0
0.8
0.6
0.4
0.2
0
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
100
10
VIN = 5 V
1
VIN = 3.6 V
0.1
0.01
0.001
- 40
5.5
SiP32414
SiP32416
VIN = 1.2 V
- 20
0
20
40
60
80
100
VIN (V)
Temperature (°C)
Figure 7 - SiP32414 and SiP32416 Off Supply Current vs. VIN
Figure 8 - SiP32414 and SiP32416 Off Supply Current
vs. Temperature
1000
1.0
0.8
IDS(on) - Off Switch Current (nA)
IDS(off) - Off Switch Current (nA)
0.9
0.7
0.6
0.5
0.4
0.3
0.2
100
10
VIN = 5 V
1
VIN = 3.6 V
0.1
0.01
VIN = 1.2 V
0.1
0
1.0
1.5
2.0
2.5
3.0 3.5
VIN (V)
4.0
4.5
5.0
5.5
Figure 9 - Off Switch Current vs. Input Voltage
Document Number: 71437
S11-2472-Rev. B, 19-Dec-11
0.001
- 40
- 20
0
20
40
Temperature (°C)
60
80
100
Figure 10 - Off Switch Current vs. Temperature
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SiP32413, SiP32414, SiP32416
Vishay Siliconix
72
75
70
70
RDS - On-Resistance (mΩ)
RDS - On-Resistance (mΩ)
TYPICAL CHARACTERISTICS (internally regulated, 25 °C, unless otherwise noted)
IO = 2 A
68
IO = 1.5 A
IO = 1 A
66
64
62
IO = 0.5 A
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
60
55
50
40
- 40
5.5
- 20
0
20
40
60
80
VIN (V)
Temperature (°C)
Figure 11 - RDS(on) vs. Input Voltage
Figure 12 - RDS(on) vs. Temperature
550
100
235
RPD - Output Pulldown Resistance (Ω)
SiP32414 and SiP32416 only
VIN = VOUT
500
RPD - Output Pulldown Resistance (Ω)
65
45
IO = 0.1 A
60
1.0
IO = 0.1 A
VIN = 5 V
450
400
350
300
250
200
150
230
225
220
215
210
100
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
SiP32414 and SiP32416 only
VOUT = VIN = 5 V
205
- 40
5.5
- 20
0
20
40
60
80
100
VIN (V)
Temperature (°C)
Figure 13 - SiP32414 and SiP32416 Output Pull Down
vs. Input Voltage
Figure 14 - SiP32414 and SiP32416 Output Pull Down
vs. Temperature
1000
1000
VIN = 1.2 V
VOUT = 5 V
VCNTRL = inactive
VIN = 1.2 V
VCNTRL = inactive
IIN - Input Current (nA)
IIN - Input Current (nA)
100
10
1
100
0.1
0.01
1.0
1.5
2.0
2.5
3.0 3.5
VOUT (V)
4.0
4.5
5.0
5.5
Figure 15 - Reverse Blocking Current vs. Output Voltage
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10
- 40
- 20
0
20
40
60
Temperature (°C)
80
100
Figure 16 - Reverse Blocking Current vs. Temperature
Document Number: 71437
S11-2472-Rev. B, 19-Dec-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
SiP32413, SiP32414, SiP32416
Vishay Siliconix
TYPICAL CHARACTERISTICS (internally regulated, 25 °C, unless otherwise noted)
1.6
160
1.5
150
SiP32413, SiP32414
td(on) - Turn-On Delay Time (µs)
CNTRL - Threshold Voltage (V)
1.4
1.3
1.2
1.1
1.0
0.9
VIH
0.8
VIL
0.7
0.6
140
VIN = 5 V
CL = 0.1 µF
RL = 10 Ω
130
120
110
100
90
80
70
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
60
- 40
5.5
- 20
0
VIN (V)
Figure 17 - CNTRL Threshold Voltage vs. Input Voltage
20
40
Temperature (°C)
80
100
Figure 18 - SiP32413 and SiP32414 Turn-On Delay Time
vs. Temperature
220
0.22
SiP32413, SiP32414
210
VIN = 5 V
CL = 0.1 µF
RL = 10 Ω
200
td(off) - Turn-Off Delay Time (µs)
t(on) - Turn-On Rise Time (µs)
60
190
180
170
160
150
0.20
SiP32413, SiP32414
VIN = 5 V
CL = 0.1 µF
RL = 10 Ω
0.18
0.16
0.14
0.12
140
130
- 40
- 20
0
20
40
60
Temperature (°C)
80
0.10
- 40
100
0
20
40
60
80
100
Temperature (°C)
Figure 19 - SiP32413 and SiP32414 Rise Time
vs. Temperature
Figure 20 - SiP32413 and SiP32414 Turn-Off Delay Time
vs. Temperature
3.0
5.0
VIN = 5 V
CL = 0.1 µF
RL = 10 Ω
2.5
4.5
4.0
tR - Rise Time (ms)
td(on) - Turn-On Delay Time (ms)
- 20
2.0
1.5
1.0
VIN = 5 V
CL = 0.1 µF
RL = 10 Ω
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.5
0.0
- 40
- 20
0
20
40
60
80
100
0.0
- 40
Temperature (°C)
20
40
Temperature (°C)
Figure 21 - SiP32416 Turn-On Delay Time vs. Temperature
Figure 22 - SiP32416 Rise Time vs. Temperature
Document Number: 71437
S11-2472-Rev. B, 19-Dec-11
- 20
0
60
80
100
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SiP32413, SiP32414, SiP32416
Vishay Siliconix
TYPICAL CHARACTERISTICS (internally regulated, 25 °C, unless otherwise noted)
0.40
td(off) - Turn-Off Delay Time (µs)
0.35
VIN = 5 V
CL = 0.1 µF
RL = 10 Ω
0.30
0.25
0.20
0.15
0.10
0.05
0
- 40
- 20
0
20
40
Temperature (°C)
60
80
100
Figure 23 - SiP32416 Turn-Off Delay Time vs. Temperature
TYPICAL WAVEFORMS
VCNTRL
(2 V/div.)
VCNTRL (2 V/div.)
RL = 7.2 Ω
CL = 0.1 µF
RL = 7.2 Ω
CL = 0.1 µF
VOUT (1 V/div.)
IOUT (200 mA/div.)
VOUT (1 V/div.)
IOUT (200 mA/div.)
Time (100 µs/div.)
Time (1 µs/div.)
Figure 24 - SiP32413 Channel 1 Switching
(VIN = 3.6 V, RL = 7.2 )
VCNTRL
(2 V/div.)
Figure 25 - SiP32413 Channel 1 Turn-Off
(VIN = 3.6 V, RL = 7.2 )
VCNTRL (2 V/div.)
RL = 10 Ω
CL = 0.1 µF
RL = 10 Ω
CL = 0.1 µF
VOUT (2 V/div.)
VOUT (2 V/div.)
IOUT (200 mA/div.)
IOUT (200 mA/div.)
Time (100 µs/div.)
Time (1 µs/div.)
Figure 26 - SiP32413 Channel 1 Switching
(VIN = 5 V, RL = 10 )
Figure 27 - SiP32413 Channel 1 Turn-Off
(VIN = 5 V, RL = 10 )
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Document Number: 71437
S11-2472-Rev. B, 19-Dec-11
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SiP32413, SiP32414, SiP32416
Vishay Siliconix
VCNTRL (2 V/div.)
VCNTRL
(2 V/div.)
RL = 7.2 Ω
CL = 0.1 µF
RL = 7.2 Ω
CL = 0.1 µF
VOUT (1 V/div.)
IOUT (200 mA/div.)
VOUT (1 V/div.)
IOUT (200 mA/div.)
Time (1 µs/div.)
Time (100 µs/div.)
Figure 28 - SiP32413 Channel 2 and SiP32414 Switching
(VIN = 3.6 V, RL = 7.2 )
VCNTRL
(2 V/div.)
Figure 29 - SiP32413 Channel 2 and SiP32414 Turn-Off
(VIN = 3.6 V, RL = 7.2 )
VCNTRL (2 V/div.)
RL = 10 Ω
CL = 0.1 µF
RL = 10 Ω
CL = 0.1 µF
VOUT (2 V/div.)
VOUT (2 V/div.)
IOUT (200 mA/div.)
IOUT (200 mA/div.)
Time (100 µs/div.)
Time (1 µs/div.)
Figure 30 - SiP32413 Channel 2 and SiP32414 Switching
(VIN = 5 V, RL = 10 )
Figure 31 - SiP32413 Channel 2 and SiP32414 Turn-Off
(VIN = 5 V, RL = 10 )
VCNTRL
(2 V/div.)
VCNTRL
(2 V/div.)
RL = 7.2 Ω
CL = 0.1 µF
VOUT (1 V/div.)
RL = 7.2 Ω
CL = 0.1 µF
IOUT (200 mA/div.)
VOUT (1 V/div.)
IOUT (200 mA/div.)
Time (2 ms/div.)
Figure 32 - SiP32416 Switching
(VIN = 3.6 V, RL = 7.2 )
Document Number: 71437
S11-2472-Rev. B, 19-Dec-11
Time (1 µs/div.)
Figure 33 - SiP32416 Turn-Off
(VIN = 3.6 V, RL = 7.2 )
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SiP32413, SiP32414, SiP32416
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VCNTRL
(2 V/div.)
VCNTRL
(2 V/div.)
RL = 10 Ω
CL = 0.1 µF
VOUT (2 V/div.)
RL = 10 Ω
CL = 0.1 µF
VOUT (2 V/div.)
IOUT (200 mA/div.)
IOUT (200 mA/div.)
Time (2 ms/div.)
Time (1 µs/div.)
Figure 34 - SiP32416 Switching
(VIN = 5 V, RL = 10 )
Figure 35 - SiP32416 Turn-Off
(VIN = 5 V, RL = 10 )
BLOCK DIAGRAM
Reverse
Blocking
IN1
CNTRL1
OUT1
Logic
Control
Charge
Pump
Turn On
Slew Rate
Control
+
GND
+
CNTRL2
Logic
Control
Charge
Pump
Turn On
Slew Rate
Control
IN2
SiP32414 and SiP32416
only
OUT2
Reverse
Blocking
Figure 36 - Functional Block Diagram
PCB LAYOUT
Top
Bottom
Figure 37 - PCB Layout for TDFN8 2 mm x 2 mm (type: FR4, size: 1.2" x 1.3", thickness: 0.062", copper thickness: 2 oz.)
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Document Number: 71437
S11-2472-Rev. B, 19-Dec-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
SiP32413, SiP32414, SiP32416
Vishay Siliconix
DETAILED DESCRIPTION
SiP32413, SiP32414 and SiP32416 are dual n-channel
power MOSFETs designed as high side load switch with
slew rate control to prevent in-rush current. Once enable the
device charges the gate of the power MOSFET to 5 V gate
to source voltage while controlling the slew rate of the turn on
time. The mostly constant gate to source voltage keeps the
on resistance low through out the input voltage range. For
SiP32414, when disable the output discharge circuit turns on
to help pull the output voltage to ground more quickly. For all
parts, in disable mode, the reverse blocking circuit is
activated to prevent current from going back to the input in
case the output voltage is higher than the input voltage. Input
voltage is needed for the reverse blocking circuit to work
properly, it can be as low as VIN(min.).
APPLICATION INFORMATION
Input Capacitor
While bypass capacitors on the inputs are not required,
2.2 µF or larger capacitors for CIN is recommended in almost
all applications. The bypass capacitors should be placed as
physically close as possible to the device’s input to be
effective in minimizing transients on the input. Ceramic
capacitors are recommended over tantalum because of their
ability to withstand input current surges from low impedance
sources such as batteries in portable devices.
Output Capacitor
A 0.1 µF capacitor or larger across VOUT and GND is
recommended to insure proper slew operation. COUT may be
increased without limit to accommodate any load transient
condition with only minimal affect on the turn on slew rate
time. There are no ESR or capacitor type requirement.
Control
The CNTRL pins are compatible with both TTL and CMOS
logic voltage levels.
Protection Against Reverse Voltage Condition
SiP32413, SiP32414 and SiP32416 contain reverse blocking
circuitries 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. Supply voltages as
low as the minimum required input voltage are necessary for
these circuitries to work properly.
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 TDFN4 1.2 mm x 1.6 mm package, J-A = 95 °C/W,
and the ambient temperature, TA, which may be formulaically
expressed as:
P (max.)
=
T J (max.) - T A
θJ- A
=
125 - TA
95
It then follows that, assuming an ambient temperature of
70 °C, the maximum power dissipation will be limited to about
580 mW.
So long as the load current is below the 2.4 A limit, the
maximum continuous switch current becomes a function 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. The worst case RDS(ON) at 25 °C
occurs at an input voltage of 1.2 V and is equal to 75 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 3400 ppm/°C. Continuing with the calculation
we have
RDS(ON) (at 70 °C) = 75 m x (1 + 0.0034 x (70 °C - 25 °C))
= 86.5 m
The maximum current limit is then determined by
P (max.)
I LOAD (max.) <
R DS(ON )
which in case is 2.6 A, assuming one switch turn on at a time.
Under the stated input voltage condition, if the 2.6 A current
limit is exceeded the internal die temperature will rise and
eventually, possibly damage the device.
To avoid possible permanent damage to the device and keep
a reasonable design margin, it is recommended to operate
the device maximum up to 2.4 A only as listed in the Absolute
Maximum Ratings table.
Thermal Considerations
All three parts are designed to maintain constant output load
current. Due to physical limitations of the layout and
assembly of the device the maximum switch current is 2.4 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 95) the power pad of the device should be
connected to a heat sink on the printed circuit board.
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?71437.
Document Number: 71437
S11-2472-Rev. B, 19-Dec-11
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
Package Information
www.vishay.com
Vishay Siliconix
Case Outline for TDFN8 2 x 2
Index Area
(D/2 x E/2)
MILLIMETERS
A
A3
A1 (6)
D
7
E
2
DIM.
MIN.
NOM.
MAX.
MIN.
NOM.
A
0.50
0.55
0.60
0.020
0.022
0.024
A1
0.00
-
0.05
0.000
-
0.002
A3
8
1
INCHES
0.152 REF
MAX.
0.006 REF
b
0.18
0.23
0.28
0.007
0.009
0.011
D
1.95
2.00
2.05
0.077
0.079
0.081
D2
0.75
0.80
0.85
0.030
0.031
0.033
3
6
e
E
1.95
2.00
2.05
0.077
0.079
0.081
4
5
E2
1.40
1.45
1.50
0.055
0.057
0.059
K
-
0.25
-
-
0.010
-
L
0.30
0.35
0.40
0.012
0.014
0.016
Top View
0.05 C
(7)
Side View
D2
Note
(1) All dimensions are in millimeters which will govern.
(2) Max. package warpage is 0.05 mm.
(3) Max. allowable burrs is 0.076 mm in all directions.
(4) Pin #1 ID on top will be laser/ink marked.
(5) Dimension applies to meatlized terminal and is measured
between 0.20 mm and 0.25 mm from terminal tip.
(6) Applied only for terminals.
(7) Applied for exposed pad and terminals.
b (5)
1
7
2
6
3
5
4
e
E2
8
0.020 BSC
ECN: T15-0301-Rev. B, 29-Jun-15
DWG: 5997
L
Pin 1 Indicator
(Optional)
0.50 BSC
K
K
Bottom View
Revison: 29-Jun-15
1
Document Number: 67493
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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www.vishay.com
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Revision: 02-Oct-12
1
Document Number: 91000