SIP4610A [VISHAY]
Protected 1-A High-Side Load Switch; 受保护的1 -A高端负载开关
| 型号： | SIP4610A |
| 厂家： | 
VISHAY |
| 描述： | Protected 1-A High-Side Load Switch |
| 文件： | 总9页 (文件大小：748K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SiP4610A/B
Vishay Siliconix
Protected 1-A High-Side Load Switch
APPLICATIONS
FEATURES
•
•
•
•
•
•
•
1 A Continuous Output Current
• Peripheral Ports
•
Hot Swap
2.4 V to 5.5 V Supply Voltage Range
User Settable Current Limit Level
Low Quiescent Current
Undervoltage Lockout
Thermal Shutdown Protection
Compatible with AAT4610A
•
Notebook Computers
RoHS
COMPLIANT
• PDAs
• 4 kV ESD Rating-HBM
DESCRIPTION
SiP4610A/B is a protected highside power switch. It is
designed to operate from voltages ranging from 2.4 V to
5.5 V and handle a continuous current of 1 A. The user
settable current limit protects the input supply voltage from
excessive load currents that might cause a system failure.
SiP4610A/B has a low quiescent current of 9 µA and in
shutdown the supply current is reduced to less than 1 µA.
In addition to current limit, the SiP4610A/B is protected by
undervoltage lockout and thermal shutdown.
There are two versions of the SiP4610. The SiP4610A has
an active low enable input, while the SiP4610B has an active
high enable input.
The SiP4610A/B is available in a lead (Pb)-free 5-pin thin
SOT-23 package for operation over the industrial
temperature range of - 40 to 85 °C.
TYPICAL APPLICATION DIAGRAM
IN
OUT
2.4 to 5.5 V
Enable
Load
C
IN
C
OUT
SiP4610A/B
SET
ON/ON
GND
R
SET
GND
GND
Document Number: 73233
S-71061–Rev. J, 21-May-07
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1
SiP4610A/B
Vishay Siliconix
ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND = 0 V)
Parameter
VIN, VON, VON
IMAX
Limit
Unit
V
- 0.3 to 6
2
A
Storage Temperature
- 65 to 150
- 40 to 150
305
°C
°C
mW
Operating Junction Temperature
Power Dissipationa, SOT-23 5-Pin
b
180
°C/W
Thermal Impedance (ΘJA
Notes:
)
, SOT-23 5-Pin
a. Derate 5.5 mW/°C above TA = 70 °C.
b. Device mounted with all leads soldered or welded to PC board.
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
Limit
Unit
V
IN
2.4 to 5.5
- 40 to 85
Operating Temperature Range
°C
a
SPECIFICATIONS
Test Conditions Unless Specified
Limits
Typb
Mina
Maxa
Unit
IN = 5 V, TA = - 40 to 85 °C
Parameter
Symbol
Power Supplies
Supply Voltage
Quiescent Current
Shutdown Current
Switch Off Current
Enable Inputs
ON/ON High
VIN
IQ
2.4
5.5
25
1
V
IN = 5 V, ON/ON = Active, lOUT = 0 A
9
ISD
IN = 5 V, ON/ON = Inactive
µA
IN = 5 V, ON/ON = Inactive, VOUT = 0 V
IS(off)
1
VIH
VIL
V
2.0
IN = 2.4 V to 5.5 V
ON/ON = 5 V
ON/ON Low
0.8
1
ON/ON Leakage Current
Turn Off Time
ILH
µA
µs
tOFF
tON
11
65
21
200
IN = 5 V, RL = 10 Ω
Turn On Time
Output
IN = 5 V, TA = 25 °C
IN = 3 V, TA = 25 °C
RSET = 6.8 kΩ
145
190
1
180
230
1.25
On-Resistance
rDS
mΩ
Current Limit
IL
A
0.75
Minimum Current Limit
Current Limit Response Time
Undervoltage Lockout
UVLO Threshold
IL(min)
tRESP
mA
µs
130
4
IN = 5 V
VUVLO
VHYST
Rising Edge
1.8
2.4
V
UVLO Hysteresis
0.05
Thermal Shutdown
Thermal Shutdown Threshold
Hysteresis
T
165
°C
THYST
20
Notes:
a. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum ( - 40 to 85 °C).
b. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
c. Guaranteed by design.
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Document Number: 73233
S-71061–Rev. J, 21-May-07
SiP4610A/B
Vishay Siliconix
PIN CONFIGURATION, ORDERING INFORMATION, AND TRUTH TABLE
Thin SOT-23, 5-Pin
5
OUT
1
IN
GND
SET
2
3
4
ON/ON
Top View
ORDERING INFORMATION
Parameter
Marking
Temperature Range
Package
SiP4610ADT-T1-E3
SiP4610BDT-T1-E3
M1WXX
M2WXX
Thin SOT23-5
- 40 to 85 °C
XX = Lot Code
W = Work week Code
Eval Kit
Temperature Range
Board Type
SiP4610DT
- 40 to 85 °C
PIN DESCRIPTION
Pin Number
Name
OUT
GND
SET
Function
1
2
3
4
5
Switch Output.
Ground pin.
Current limit level set pin. The level is determinied by the value of a resistor connected from this pin to GND.
Shutdown pin. ON, active low on the SiP4610A and ON, active high on the SiP4610B.
Input supply voltage and switch input.
ON/ON
IN
FUNCTIONAL BLOCK DIAGRAM
nW/L
IN
OUT
_
+
W/L
Under
Voltage
Lockout
Thermal
Shutdown
SET
+
_
ON (SiP4610A)
ON (SiP4610B)
Reference
Voltage
GND
Figure 1. SiP4610 Block Diagram
Document Number: 73233
S-71061–Rev. J, 21-May-07
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SiP4610A/B
Vishay Siliconix
DETAILED DESCRIPTION
VIN - VOUT will cause the chip to dissipate more heat. The
power dissipation for the SiP4610 can be expressed as
The SiP4610 limits load current by sampling the pass
transistor current and passing that through an external
resistor, RSET. The voltage across RSET, VSET, is then
compared with an internal reference voltage, VREF. In the
event that load current surpasses the set limit current, VSET
will exceed VREF causing the pass transistor gate voltage to
increase, thereby reducing the gate to source voltage of the
P = ILOAD x (VIN - VOUT
)
Once this exceeds the maximum power dissipation of the
package, the die temperature will rise. When the die
temperature exceeds an over-temperature limit of 165 °C,
the SiP4610 will shut down until it has cooled down to 145
°C, before starting up again. As can be seen in the figure
below, the SiP4610 will continue to cycle on and off until the
load is reduced or the part is turned off (See Figure 2).
The maximum power dissipation in any application is
PMOS switch and regulating its current back down to ILIMIT
.
Setting the Current Limit Level
Setting the current limit level on the SiP4610 requires some
care to ensure the maximum current required by the load will
not trigger the current limit circuitry. The minimum current
limit threshold should be determined by taking the maximum
current required by the load, ILOAD, and adding 25 %
headroom. The SiP4610 has a current limit tolerance of
25 %, which is largely a result of process variations from part
to part, and also temperature and VIN/VOUT variances. Thus,
to ensure that the actual current limit is never below the
desired current limit a 1/0.75 = 1.33 coefficient needs to be
added to the calculations. Knowing the maximum load
current required, the value of RSET is calculated as follows.
dependant on the maximum junction temperature,
T
=
J(MAX)
125 °C, the junction-to-ambient thermal resistance for the
SOT23-5 package, θJ-A = 180 °C/W, and the ambient
temperature, TA, which may be formulaically expressed as:
T (max) − TA
125 − TA
180
J
P(max) =
=
θJ−A
It then follows that assuming an ambient temperature of
70 °C, the maximum power dissipation will be limited to about
305 mW.
RSET = RSET coefficient/ILIMIT
where ILIMIT = (ILOAD x 1.33) x 1.25 and RSET coefficient is
7100 for a 1 A current limit. For typical RSET coefficient
Reverse Voltage
The SiP4610 is designed to control current flowing from IN to
OUT. If the voltage on OUT is raised higher than IN current
will flow from OUT to IN but the current limit function will not
be available, as can be inferred from the block diagram in
Figure 1. Thus, in applications were OUT is used to charge
IN, careful considerations must be taken to limit current
through the device and protect it from becoming damaged.
values given
a limit current refer to the "Typical
Characteristics" section.
Operation at Current Limit and Thermal Shutdown
In the event that a load higher than ILIMIT is demanded of the
SiP4610, the load current will stay fixed at the current limit
established by RSET. However, since the required current is
not supplied, the voltage at OUT will drop. The increase in
Figure 2. Current Over load Condition. Load Switch turned on with 0.1 Ω load at time = 0 ms.
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Document Number: 73233
S-71061–Rev. J, 21-May-07
SiP4610A/B
Vishay Siliconix
TYPICAL CHARACTERISTICS 25 °C, unless otherwise noted
20
20
16
12
8
16
12
8
4
4
0
0
- 40 - 20
0
20
40
60
80
100 120
0
1
2
3
4
5
6
V
– Input Voltage (V)
IN
Temperature (°C)
Quiescent Current vs. Temperature
Quiescent Current vs. Input Voltage
1000
900
800
700
600
500
400
300
200
100
0
250
200
150
100
50
V
IN
= 3 V
V
IN
= 5 V
R
SET
= 16.2 kΩ
0
0
1
2
3
4
5
0
20
40
60
80
100
120
V
- Output Voltage (V)
Temperature (°C)
rDS(on) vs. Temperature
OUT
Output Current vs. VOUT
10
1
1
0.1
0.1
0.01
0.01
0.001
0.001
0.0001
0.0001
0.00001
0.00001
- 40
- 20
0
20
Temperature (°C)
Off Switch Current vs. Temperature
40
60
80 100 120
- 40
- 20
0
20
Temperature (°C)
Off Supply Current vs. Temperature
40
60
80 100 120
Document Number: 73233
S-71061–Rev. J, 21-May-07
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5
SiP4610A/B
Vishay Siliconix
TYPICAL CHARACTERISTICS 25 °C, unless otherwise noted
120
15
13
11
9
100
80
60
40
20
0
V
= 3 V
= 5 V
IN
V
IN
= 5 V
V
IN
V
IN
= 3 V
7
5
- 40
- 20
0
20
40
60
80
100
- 40
- 20
0
20
Temperature (°C)
Turn-Off vs. Temperature
40
60
80
100
Temperature (°C)
Turn-On vs. Temperature
L = 10 Ω , CL = 0.47 µF
R
R
L = 10 Ω , CL = 0.47 µF
100
2.0
1.5
1.0
0.5
0.0
10
1
0.1
1
10
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
I
(A)
LIMIT
V
IN
– Input Voltage (V)
V
IH vs. VIL vs. VIN
RSET vs. ILIMIT
9
8
7
6
4
3
R
IN
= 22.1 k
OUT
SET
– V
V
= 0.5 V
2
1
0
- 1
- 2
- 3
- 4
0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00
- 50
- 25
0
25
Temperature (°C)
Current Limit vs. Temperature
50
75
100
125
(A)
I
LIMIT
RSET Coefficient vs. ILIMIT
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Document Number: 73233
S-71061–Rev. J, 21-May-07
SiP4610A/B
Vishay Siliconix
TYPICAL CHARACTERISTICS 25 °C, unless otherwise noted
250
200
150
100
50
250
200
150
100
50
VOUT = 5 V
I(VOUT to VIN) = 1 A
VOUT = 5 V
0
0
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8
- 40
- 20
0
20
40
60
80
100
Temperature (°C)
Current (A)
Rds (VOUT to VIN) vs. Temperature
Rds (VOUT to VIN) vs. Current
TYPICAL WAVEFORMS
ON,
2 V/div
ON
2 V/div
OUT
2 V/div
R
L
= 10 Ω
L
R
L
= 10 Ω
OUT,
2 V/div
L
C
= 0.47 µF
C
= 0.47 µF
10 µs/div
10 µs/div
Turn On
Turn Off
V
IN
2 V/div
V
IN
2 V/div
V
OUT
V
OUT
2 V/div
2 V/div
lout
2 A/div
lout
2 A/div
2 µs/div
2 µs/div
Short Circuit through 0.3 Ω, Vin = 5 V
Short Circuit through 0.3 Ω, Vin = 3.3 V
Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon Tech-
nology and Package Reliability represent a composite of all qualified locations. For related documents such as package/tape drawings, part marking, and reliability
data, see http://www.vishay.com/ppg?73233.
Document Number: 73233
S-71061–Rev. J, 21-May-07
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7
Package Information
Vishay Siliconix
THIN SOT-23 : 5- AND 6-LEAD (POWER IC ONLY)
e1
e1
5
1
4
3
6
1
5
2
4
3
E1
E1
E
E
2
−B−
−B−
e
e
M
M
0.15
0.15
C
B
A
C
B
A
b
b
SOT23-5L Format
SOT23-6L Format
0.17 Ref
4xq1
−A−
D
C
R
A2
A
L
2
R
Gauge Plane
Seating Plane
Q
Seating Plane
L
(L1)
0.08 C
−C−
A1
4xq1
MILLIMETERS
INCHES
Dim
Min
Nom
Max
Min
Nom
Max
0.91
0.01
0.90
0.30
0.10
2.90
2.70
1.525
1.00
0.05
1.10
0.10
1.00
0.45
0.20
3.10
2.98
1.70
0.036
0.0004
0.035
0.012
0.004
0.114
0.106
0.060
0.039
0.002
0.043
0.004
0.039
0.018
0.008
0.122
0.117
0.067
A
A1
A2
b
c
D
E
E1
e
e1
L
0.95
0.037
0.32
0.013
0.15
0.006
3.05
0.120
2.85
0.112
1.65
0.065
0.95 BSC
1.90
0.0374 BSC
0.075
1.80
0.30
2.00
0.60
0.070
0.012
0.080
0.024
0.40
0.016
0.60 REF
0.25 BSC
−
0.024 REF
0.010 BSC
−
L1
L2
R
Q
Q1
0.10
0_
−
0.004
0_
−
4_
8_
4_
8_
4_
10_ NOM
12_
4_
10_ NOM
12_
ECN: S-40083—Rev. A, 02-Feb-04
DWG: 5926
Document Number: 72821
29-Jan-04
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Legal Disclaimer Notice
Vishay
Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively,
“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
disclosure relating to any product.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,
consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular
purpose, non-infringement and merchantability.
Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of typical
requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements
about the suitability of products for a particular application. It is the customer’s responsibility to validate that a particular
product with the properties described in the product specification is suitable for use in a particular application. Parameters
provided in datasheets and/or specifications may vary in different applications and performance may vary over time. All
operating parameters, including typical parameters, must be validated for each customer application by the customer’s
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
applications or for any other application in which the failure of the Vishay product could result in personal injury or death.
Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk and agree
to fully indemnify and hold Vishay and its distributors harmless from and against any and all claims, liabilities, expenses and
damages arising or resulting in connection with such use or sale, including attorneys fees, even if such claim alleges that Vishay
or its distributor was negligent regarding the design or manufacture of the part. Please contact authorized Vishay personnel to
obtain written terms and conditions regarding products designed for such applications.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by
any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners.
Document Number: 91000
Revision: 11-Mar-11
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