SIP32419 [VISHAY]
28 V, 56 m, Load Switch with Programmable Current Limit and Slew Rate Control;
| 型号： | SIP32419 |
| 厂家： | 
VISHAY |
| 描述： | 28 V, 56 m, Load Switch with Programmable Current Limit and Slew Rate Control |
| 文件： | 总14页 (文件大小：580K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SiP32419, SiP32429
www.vishay.com
Vishay Siliconix
28 V, 56 m, Load Switch
with Programmable Current Limit and Slew Rate Control
OPERATION DESCRIPTION
FEATURES
SiP32419 and SiP32429 are load switches that integrate
multiple control features that simplify the design and
increase the reliability of the circuitry connected to the
switch. Both devices are 56 m switches designed to
operate in the 6 V to 28 V range. An internally generated gate
drive voltage ensures good RON linearity over the input
voltage operating range.
• 6 V to 28 V operation
• Programmable soft start
• Programmable current limit
• Over temperature protection
• ON resistance 56 m
Available
• Power good, when VOUT reaches 90 % of VIN
• Fault flag
The SiP32419 and SiP32429 have a slew rate control circuit
that controls the switch turn-on time to the value set by an
external capacitor.
• Under voltage lockout: 4.8 V / 5.4 V (typ. / max.)
• Package: DFN10 3 mm x 3 mm
After soft start, an over-current protection circuit (OCP)
continuously monitors the current through the load switch,
and controls the switch impedance to limit the current to the
level programmed by an external resistor. If the over-current
condition persists for more than 7 ms, the switch shuts off
automatically. The SiP32419 and SiP32429 has an over
temperature protection circuit (OTP) which will shut the
switch off if the junction temperature exceeds about 135 °C.
The OTP circuit will release the switch when the temperature
has decreased by about 40 °C of hysteresis.
• SiP32429 will turn OFF the switch under fault conditions,
and re-try to turn on through the full soft start procedure
150 ms after the switch is off if there is no OT fault.
• SiP32419 will turn OFF the switch under fault conditions
and remain OFF. The switch can be reset by toggling
either signal on EN pin or the input power if it is not under
over temperature fault condition.
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
When an OCP or an OTP fault condition is detected the FLG
pin is pulled low. For the SiP32429, the fault flag will release
150 ms after the fault condition is cleared, and the switch
will automatically turn on at the programmed slew rate. For
the SiP32419, the switch will remain off and the fault flag will
remain on. The switch will be reset by toggling either control
signal on EN pin or the input power if it is not under over
temperature fault condition.
APPLICATIONS
• Personal computers
• Lighting
• Flat panel displays
• Game consoles
• Industrial
These devices feature a low voltage control logic interface
which can be controlled without the need for level shifting.
These devices also include a power good flag.
• Network communication
• Data storage
SiP32419 and SiP32429 are available in a space efficient
DFN10 3 mm x 3 mm package.
TYPICAL APPLICATION CIRCUIT
Fig. 1 - SiP32419, SiP32429 Typical Application Circuit
S16-2135-Rev. E, 24-Oct-16
Document Number: 63939
1
For technical questions, contact: powerictechsupport@vishay.com
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
SiP32419, SiP32429
www.vishay.com
Vishay Siliconix
ORDERING INFORMATION
TEMPERATURE RANGE
PACKAGE
MARKING
2429
PART NUMBER
SiP32429DN-T1-GE4
SiP32419DN-T1-GE4
-40 °C to +85 °C
DFN10 3 mm x 3 mm
2419
Note
•
GE4 denotes halogen-free and RoHS-compliant
ABSOLUTE MAXIMUM RATINGS
PARAMETER
LIMIT
-0.3 to 30
-0.3 to VIN + 0.3 V
-5 V for 5 μs
-0.3 to 30
-0.3 to 30
-0.3 to 6
4.5
UNIT
Input Voltage (VIN)
Output Voltage (VOUT
)
V
PG Voltage
FLG Voltage
EN Voltage
Maximum Continuous Switch Current
ESD Rating (HBM)
A
V
4000
Maximum Junction Temperature
150
°C
Storage Temperature
-55 to +150
88
a
Thermal Resistance (thJA
)
°C/W
W
Power Dissipation (PD) a, b
1.42
Notes
a. Device mounted with all lead and power pad soldered or welded to PCB.
b. Derate 11.4 mW/°C above 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
6 to 28
0 to 6
UNIT
Input Voltage (VIN)
VSS
VOUT
0 to 28
0 to 6
V
EN
FLG. PG
0 to VIN
0 to 6
ILIM
Current Limit
0.75 to 3.5
-40 to +85
A
Operating Temperature Range
°C
S16-2135-Rev. E, 24-Oct-16
Document Number: 63939
2
For technical questions, contact: powerictechsupport@vishay.com
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
SiP32419, SiP32429
www.vishay.com
Vishay Siliconix
SPECIFICATIONS
TEST CONDITIONS UNLESS
SPECIFIED
IN = 12 V, VEN = 2.4 V, TA = 25 °C
PARAMETER
SYMBOL
TEMP.
MIN.
TYP.
MAX.
UNIT
V
Power Input Voltage
Quiescent Current
Shutdown Current
VIN
IQ
-
-
-
6
-
-
28
300
20
V
IOUT = 0 A, and device enabled
IOUT = 0 A, and device disabled
170
12
ISD
-
μA
A
VIN = 28 V, VOUT = 0 V
(current measured at output)
Switch OFF Leakage
I(OFF)
-
-
-
1
-40 °C
to +85 °C
Current Limit Accuracy
RSET = 4.1 k
1.2
1.5
1.8
Switch ON Resistance
RDS(on)
ISS
ISW = 500 mA
-
-
-
-
56
72
-
m
Soft Start Charge Current
Constant current source
4.5
μA
50 % VEN to 50 % VOUT, CSS = open,
Turn ON Delay Time
TON_DLY
-
-
-
-
-
-
-
-
550
400
7
-
-
-
-
RL = 10 , COUT = 10 μF
μs
CSS = open, RL = 10 ,
C
OUT = 10 μF
SS = 47 nF, RL = 10 ,
OUT = 10 μF
SS = 47 nF, no RL,
OUT = 10 μF
C
Turn ON Rise Time
TR
C
ms
C
2
C
Turn OFF Delay
TOFF_DLY
-
-
-
-
-
-
1
20
1
-
-
-
Current Limit Response Time
Short Circuit Response Time
μs
OC Flag Blanking Time /
-40 °C
to +85 °C
4
-
-
150
-
-
-
-
Switch OFF delay under OC
ms
Auto re-try time (SiP32429 only)
-
-40 °C
to +85 °C
Input Logic High Voltage
VENH
1.5
VIN = 6 V to 28 V
VEN = 5 V
V
-40 °C
to +85 °C
Input Logic Low Voltage
VENL
REN
-
-
0.6
Input Pull Down Resistor
Power Good Trip Voltage
Power Good Hysteresis
-
-
-
-
-
-
2.5
-
-
-
M
90 % x VIN
3 % x VIN
V
PG and FLG Output Logic Low
Voltage
ISINK = 1 mA
-
-
< 0.1
-
PG and FLG Output High Leakage
UVLO Threshold
VPG, VFLG = 28 V
-
-
-
-
-
-
-
-
-
-
-
1
5.4
-
μA
V
4.8
0.28
137
39
UVLO Hysteresis
Thermal Shut-down Threshold
Thermal Shut-down Hysteresis
-
°C
-
S16-2135-Rev. E, 24-Oct-16
Document Number: 63939
3
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ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
SiP32419, SiP32429
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TIMING DIAGRAM
Vishay Siliconix
1 μs short circuit
response
Programmable
over current protection shutdown &
Thermal
Auto retry
in 150 ms
Programmable
slew rate
Low switch ON
resistance
& 6 ms blanking
over current
off latching
period
EN
150 ms retry time. In case
of OT, it is OT protection
period plus 150 ms
5 ms or OT which
ever occurs the first
VOUT
Over temperature or
end of blanking time
ILIM
Load current below limit
Current limit mode
IOUT
Short circuit response time
/PG
/FLG
Fig. 2 - Timing Diagram
PIN CONFIGURATION
VIN
VIN
SS
EN
ILIM
1
2
3
4
5
10
9
VOUT
VOUT
FLG
PG
8
7
6
GND
Fig. 3 - DFN10 3 mm x 3 mm Package
Top View
S16-2135-Rev. E, 24-Oct-16
Document Number: 63939
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SiP32419, SiP32429
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Vishay Siliconix
PIN DESCRIPTION
PIN NUMBER
NAME
VIN
FUNCTION
1
2
Power input
Power input
VIN
Soft-Start pin. Connect a capacitor from SS to GND to program the soft-start
time. Leave SS open to set the default soft-start time of 400 μs.
3
SS
4
5
EN
ILIM
Enable input. Logic high enabled
Current limit setting pin. Connect RSET resistor to GND
Ground
6
GND
PG
7
Power Good
8
FLG
VOUT
VOUT
Fault condition flag
9
Switch output
10
Switch output
Central Pad
Connect this pad to GND or leave it floating
BLOCK DIAGRAM
28 V max.
To load
VOUT
VIN
6 V to 28 V
COUT
CIN
Regulator
Driver
ILIM
Current
limit
Under
voltage
lockout
Logic,
timing,
& control
SS
Slew rate
control
Thermal
ON
protection
EN
/PG
RSET
Css
/FLG
OFF
GND
Fig. 4 - Block Diagram
TYPICAL CHARACTERISTICS (internally regulated, 25 °C, unless otherwise noted)
200
190
180
170
160
150
140
130
120
110
100
200
190
180
170
160
150
140
130
120
110
100
VIN = 28 V
VIN = 12 V
VIN = 6 V
- 40
- 20
0
20
40
60
80
100
5
10
15
20
25
30
Temperature (°C)
VIN (V)
Fig. 5 - Quiescent Current vs. Input Voltage
S16-2135-Rev. E, 24-Oct-16
Fig. 6 - Quiescent Current vs. Temperature
Document Number: 63939
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ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
SiP32419, SiP32429
www.vishay.com
Vishay Siliconix
TYPICAL CHARACTERISTICS (internally regulated, 25 °C, unless otherwise noted)
20
18
16
14
12
10
8
24
22
20
18
16
14
12
10
8
VIN = 28 V
VIN = 12 V
VIN = 6 V
6
6
4
4
2
2
0
0
- 40
- 20
0
20
40
60
80
100
5
10
15
20
25
30
VIN (V)
Temperature (°C)
Fig. 7 - Shutdown Current vs. Input Voltage
Fig. 10 - Shutdown Current vs. Temperature
25
0
0
VIN = 6 V
-0.2
-0.4
-0.6
-0.8
-1
-25
VIN = 12 V
-50
-75
VIN = 28 V
-100
-125
-150
-175
-200
-1.2
-1.4
-1.6
-1.8
-2
5
10
15
20
25
30
- 40
- 20
0
20
40
60
80
100
Temperature (°C)
VIN (V)
Fig. 8 - Shutdown Current vs. Input Voltage
Fig. 11 - Switch OFF Current vs. Temperature
65
64
63
62
61
60
59
58
80
75
70
65
60
55
50
45
ISW = 0.5 A
VIN = 12 V
ISW = 0.5 A
5
10
15
20
25
30
- 40
- 20
0
20
40
60
80
100
VIN (V)
Temperature (°C)
Fig. 9 - ON Resistance vs. Input Voltage
S16-2135-Rev. E, 24-Oct-16
Fig. 12 - ON Resistance vs. Temperature
Document Number: 63939
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ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
SiP32419, SiP32429
www.vishay.com
Vishay Siliconix
TYPICAL CHARACTERISTICS (internally regulated, 25 °C, unless otherwise noted)
-4
-4.1
-4.2
-4.3
-4.4
-4.5
-4.6
-4.7
-4.8
0
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
VIN = 12 V
5
10
15
20
25
30
- 40
- 20
0
20
40
60
80
100
VIN (V)
Temperature (°C)
Fig. 13 - Soft Start Current vs. Input Voltage
Fig. 15 - Soft Start Current vs. Temperature
1.3
1.25
1.2
2.5
2
VIN = 12 V
VIH
1.5
1
1.15
1.1
VIL
0.5
0
1.05
1
5
10
15
20
25
30
0
1
2
3
4
5
6
VIN (V)
VEN (V)
Fig. 14 - Threshold Voltage vs. Input Voltage
Fig. 16 - EN Current vs. VEN
S16-2135-Rev. E, 24-Oct-16
Document Number: 63939
7
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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
SiP32419, SiP32429
www.vishay.com
Vishay Siliconix
TYPICAL CHARACTERISTICS (internally regulated, 25 °C, unless otherwise noted)
1000
900
800
700
600
500
400
300
3.5
3.25
3
VIN = 12 V
CSS = Open
CL = 10 μF
VIN = 12 V
EN = 5V
V
2.75
2.5
2.25
2
1.75
1.5
- 40
- 20
0
20
40
60
80
100
- 40
- 20
0
20
40
60
80
100
Temperature (°C)
Temperature (°C)
Fig. 17 - EN Resistance vs. Temperature
Fig. 19 - Turn-ON Delay Time vs. Temperature
500
475
450
425
400
375
350
1.00
0.90
0.80
0.70
0.60
0.50
VIN = 12 V
VIN = 12 V
CSS = Open
CL = 10 μF
RL = 10 Ω
C
SS = Open
CL = 10 μF
RL = 10 Ω
- 40
- 20
0
20
40
60
80
100
- 40
- 20
0
20
40
60
80
100
Temperature (°C)
Temperature (°C)
Fig. 18 - Rise Time vs. Temperature
Fig. 20 - Turn-OFF Delay Time vs. Temperature
11
10
9
VIN = 12 V
CSS = 47nF
C
L = 10 μF
RL = 10 Ω
8
7
6
5
4
3
- 40
- 20
0
20
40
60
80
100
Temperature (°C)
Fig. 21 - Rise Time vs. Temperature
8
S16-2135-Rev. E, 24-Oct-16
Document Number: 63939
For technical questions, contact: powerictechsupport@vishay.com
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TYPICAL WAVEFORMS
Vishay Siliconix
Fig. 22 - Turn-ON Time,
IN = 12 V, CSS = open, RL = 10 , CL = 10 μF
Fig. 25 - Turn-OFF Time,
VIN = 12 V, CSS = open, RL = 10 , CL = 10 μF
V
Fig. 23 - Turn-ON Time,
IN = 12 V, CSS = 47 nF, RL = 10 , CL = 10 μF
Fig. 26 - Turn-OFF Time,
IN = 12 V, CSS = 47 nF, RL = 10 , CL = 10 μF
V
V
Fig. 24 - Turn-ON Time,
IN = 12 V, CSS = 47 nF, RL = open, CL = 10 μF
Fig. 27 - Turn-OFF Time,
VIN = 12 V, CSS = 47 nF, RL = open, CL = 10 μF
V
S16-2135-Rev. E, 24-Oct-16
Document Number: 63939
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TYPICAL WAVEFORMS
Vishay Siliconix
VOUT=2 V/div
VFLG=5V/div
VOUT=2 V/div
VFLG=5V/div
IOUT=1A/div
IOUT=1A/div
VPG=2 V/div
2ms/div
VPG=2 V/div
2ms/div
Fig. 28 - Current Limit
from 25 to 2 Load, VIN = 12 V
Fig. 30 - Current Limit
from 25 to 0.5 Load, VIN = 12 V
Fig. 29 - SiP32419
Remains OFF after seeing Fault Condition
Fig. 31 - SiP32429
Re-Starts after ~ 150 ms during Fault Condition
S16-2135-Rev. E, 24-Oct-16
Document Number: 63939
10
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SiP32419, SiP32429
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Vishay Siliconix
DETAILED DESCRIPTION
Over Current Limit
The SiP32419 and SiP32429 current limit control circuit
responses within 1 μs (typ.) when an over current event
occurs. During this brief period before the over current
protection circuit is engaged, the parts will see a surge
current especially under a severe output short condition.
The magnitude of the surge current developed during the
period when the overcurrent protection is not engaged is
determined by impedance in the loop from the input current
source to ground and the response time. This impedance is
the sum total of the current source impedance, the path
resistance and inductance and the load impedance. It is
recommended to design the circuit to keep the peak current
under 50 A by ensuring that there is sufficient impedance in
the path to limit current to this recommended maximum
of 50 A. Once the current limit circuit is engaged, the
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
0
2
4
6
8
10
SiP32419
/ SiP32429 will limit the current to the
RSET (kΩ)
programmed set point. If the over current event exceeds
7 ms, the switch is turned OFF and the FLG pin is pulled low.
Fig. 32 - Current Limit vs. RSET
The SiP32429 features auto retry logic design and as long as
enable is high, the part will restart after a 150 ms time out.
The SiP32419 will remain OFF and can be reset by toggling
VIN or EN.
Soft Start
The soft start time can be calculated by the following
formula:
The current limit is set by connecting a resistor between the
ILIM pin and GND. RSET can be calculated by the following
formula:
ΔVOUT
ISS
ROUT x 5000
=
x
CSS
RSET
Δt
1.24 V
Where:
t is the soft start time
VOUT is the output voltage range
ILim
=
x 5000
RSET
Where:
ISS is the built-in current source charging the soft start
capacitor CSS. ISS value is 5 μA typical.
CSS is the soft start time setting capacitor.
RSET is the current limit setting resistor.
ROUT is the output load.
ILIM = is the target current limit setting.
RSET SELECTION TABLE
CURRENT LIMIT (A)
RSET (k)
TOL. (%)
MIN.
2.85
2.78
2.73
2.25
1.77
1.39
1.20
1.03
0.81
0.64
0.56
TYP.
3.56
3.48
3.41
2.81
2.21
1.74
1.50
1.37
1.08
0.85
0.75
MAX.
4.28
4.18
4.09
3.37
2.66
2.08
1.81
1.71
1.35
1.06
0.94
Enable
1.74
1.78
1.82
2.21
2.80
3.57
4.12
4.53
5.76
7.32
8.25
20
20
20
20
20
20
20
25
25
25
25
The enable pin needs to be high for the device to become
active. This can be accomplished by applying a logic high
signal to the EN pin. Alternatively this pin can be hardwired
through a resistor divider to the VIN, thus keeping the switch
permanently ON as long as the supply is present.
FLG
The FLG is an open drain output and will be pulled low in
fault condition. This pin can be pulled up through a 100K
resistor.
PG
The PG is an open drain output that will be pulled low when
output voltage passes 90 % of the VIN. This pin can be
pulled up through a 100K resistor.
S16-2135-Rev. E, 24-Oct-16
Document Number: 63939
11
For technical questions, contact: powerictechsupport@vishay.com
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SiP32419, SiP32429
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Vishay Siliconix
APPLICATION INFORMATION
Input Capacitor
SOA
While bypass capacitors at the inputs pins are not required,
a 2.2 μF or larger capacitors for CIN is recommended in
almost all applications. The bypass capacitors should be
placed as physically close to the device’s input pins to be
effective to minimize 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.
10
25 °C ambient
single pulse
1 ms
10 ms
100 ms
1 s
10 s
1
DC
Output Capacitor
0.1
The device does not require an output capacitor for
proper operation. A proper value COUT is recommended
to accommodate load transient per circuit design
requirements. There are no ESR or capacitor type
requirements.
0.01
0.01
0.1
1
10
100
VDS (V)
Over Temperature Shutdown
In case an over temperature event happens, the SiP32419
and SiP32429 will turn the switch OFF immediately. The
SiP32429 will then retry to start 150 ms after the
temperature is back to normal; during this period, FLG will
be pulled low. The SiP32429 FLG will be pulled high 150 ms
after the OT event has finished. The SiP32419 will remain
OFF and not retry to start, FLG will remain to be pulled low.
Fig. 33 - SOA on Application Board
Thermal Consideration
SiP32419 and SiP23429 are designed to maintain a
constant output load current. Due to physical limitations of
the layout and assembly of the device the maximum switch
current should be kept at reasonably safe level. However,
another limiting characteristic of the safe operating load
current is the thermal power dissipation.
Fig. 34 - Application Board Layout
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?63939.
S16-2135-Rev. E, 24-Oct-16
Document Number: 63939
12
For technical questions, contact: powerictechsupport@vishay.com
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
Vishay Siliconix
DFN-10 LEAD (3 X 3)
D
e
D/2
Terminal Tip
3
3
NXb
0.10
M
C
A
B
Index Area
E/2
D/2 E/2
5
E2
E
NXL
Exposed Pad
Index Area
D/2 E/2
D2
0.15
C
2x
5
BOTTOM VIEW
TOP VIEW
// 0.10
0.08
C
C
A
SEATING
PLANE
NX
4
A1
A3
SIDE VIEW
MILLIMETERS
INCHES
Nom
Dim
A
Min
Nom
0.90
Max
Min
Max
0.039
0.002
NOTES:
0.80
1.00
0.031
0.035
1. All dimensions are in millimeters and inches.
0.00
0.02
0.05
0.000
0.001
A1
2. N is the total number of terminals.
0.20 BSC
0.23
0.008 BSC
0.009
A3
b
3. Dimension b applies to metallized terminal and is measured
between 0.15 and 0.30 mm from terminal tip.
0.18
2.20
1.49
0.30
0.30
2.48
1.74
0.50
0.007
0.087
0.059
0.012
0.012
0.098
0.069
0.020
3.00 BSC
2.38
0.118 BSC
0.094
D
D2
E
E2
e
L
4. Coplanarity applies to the exposed heat sink slug as well as the
terminal.
5. The pin #1 identifier may be either a mold or marked feature, it
must be located within the zone iindicated.
3.00 BSC
1.64
0.118 BSC
0.065
0.50 BSC
0.40
0.020 BSC
0.016
*Use millimeters as the primary measurement.
ECN: S-42134—Rev. A, 29-Nov-04
DWG: 5943
Document Number: 73181
29-Nov-04
www.vishay.com
1
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Disclaimer
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RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
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“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
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the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
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particular product with the properties described in the product specification is suitable for use in a particular application.
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including but not limited to the warranty expressed therein.
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Revision: 13-Jun-16
Document Number: 91000
1
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