SIP4282ADVP-3-T1-E3 [VISHAY]
Peripheral Driver, 1 Driver, PDSO6;
| 型号： | SIP4282ADVP-3-T1-E3 |
| 厂家： | 
VISHAY |
| 描述： | Peripheral Driver, 1 Driver, PDSO6 驱动 光电二极管 驱动器 |
| 文件： | 总9页 (文件大小：297K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SiP4282A
Vishay Siliconix
New Product
1.2 A Slew Rate Controlled Load Switch in PPAK SC75-6
FEATURES
DESCRIPTION
• 1.5 V to 5.5 V Input Voltage range
The SiP4282A is a P-Channel MOSFET power switch
IC designed for high-side load switching applications.
The output switching transistor is a P-Channel MOS-
• Very Low R
, typically 140 mΩ
DS(ON)
at 5 V and 175 mΩ at 3 V
FET device that has a 140 mΩ R
typically to
DS(ON)
• Slew rate limited turn-on time options
- SiP4282A-1: 1 ms
increase load switching power handling capacity. The
SiP4282A is available in two different versions with
turn-on and turn-off characteristics ranging from very
fast to slew rate limited. In addition to a fast turn-off
time of 4 µs, the SiP4282A-3 version offers a shut-
down load discharge circuit to instantaneously turn off
a load circuit when the switch is disabled.
- SiP4282A-3: 100 µs
• Fast shutdown load discharge option
• Low quiescent current, typically 2.5 µA
• Low Shutdown Current < 1 µA
• TTL/CMOS input logic level
• UVLO of 1.4 V
The SiP4282A load switch operates with an input volt-
age ranging from 1.5 V to 5.5 V, making it ideal for both
3 V and 5 V systems. The SiP4282A also features an
under-voltage lock out which turns the switch off when
an input undervoltage condition exists. Input logic lev-
els are TTL and 2.5 V to 5 V CMOS compatible. This
device has a very low operating current (typically
2.5 µA), making it ideal for battery-powered applica-
tions. In shutdown mode, the supply current
decreases to less than 1 µA.
• SC-75 Package
APPLICATIONS
• Cellular telephones
• Digital still cameras
• Personal digital assistants (PDA)
• Hot swap supplies
• Notebook computers
• Personal communication devices
• USB
The SiP4282A is available in a lead (Pb)-free 6 pin
PPAK SC75-6 package and is specified over - 40 °C to
85 °C temperature range
.
TYPICAL APPLICATION CIRCUIT
V
OUT
OUT
IN
V
V
V
IN
IN
OUT
1
2
6
5
SiP4282A
C
1 µF
C
OUT
0.1 µF
IN
4
ON/OFF
GND
ON/OFF
3
GND
GND
SiP4282A Typical Application Circuit
Document Number: 73851
S-62494–Rev. B, 11-Dec-06
www.vishay.com
1
SiP4282A
Vishay Siliconix
ABSOLUTE MAXIMUM RATINGS
Parameter
Limit
- 0.3 to 6
Unit
Supply Input Voltage (VIN
Enable Input Voltage (VON
Output Voltage (VOUT
)
)
- 0.3 to 6
V
)
- 0.3 to VIN + 0.3
Maximum Continuous Switch Current (IMAX
)
1.4
3
VIN ≥ 2.5 V
VIN < 2.5 V
A
Maximum Pulsed Current (IDM) VIN
1.6
ESD Rating (HBM)
4000
- 40 to 150
V
Junction Temperature (TJ)
°C
a
6 pin PPAK SC75
6 pin PPAK SC75
90
°C/W
mW
Thermal Resistance (θJA
)
Power Dissipation (PD)b
610
Notes:
a. Device mounted with all leads and power pad soldered or welded to PC board.
b. Derate 11.1 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
Parameter
Input Voltage Range (VIN
Limit
Unit
V
)
1.5 to 5.5
0 to 1.2
Continuous Switch Current
A
Operating Temperature Range
- 40 to 85
°C
SPECIFICATIONS
Limits
- 40 to 85 °C
Test Conditions Unless Specified
IN = 5.0, TA = - 40 °C to 85 °C
V
Mina
Typb
Maxa
(Typical values are at TA = 25 °C)
Parameter
Symbol
Unit
SiP4282A All Versions
Operating Voltagec
Quiescent Current
Off Suply Current
Off Switch Current
VIN
IQ
1.5
-
2.5
-
5.5
4
V
ON/OFF = active
ON/OFF = inactive, OUT = open
ON/OFF = inactive, VOUT = 0
VIN = 5 V, TA = 25 °C
-
-
-
-
µA
IQ(OFF)
ISD(OFF)
1
-
1
140
230
V
IN = 4.2 V, TA = 25 °C
-
-
150
250
290
480
520
-
RDS(on)
V
IN = 3 V, TA = 25 °C
IN = 1.8 V, TA = 25 °C
IN = 1.5 V, TA = 25 °C
On-Resistance
175
mΩ
V
V
-
300
-
350
On-Resistance Temp-Coefficient
ON/OFF Input Low Voltage
TCRDS
VIL
-
2800
ppm/°C
VIN = 1.8 V to 5.5 Vd
VIN = 1.5 V to 2.7 Vd
-
-
-
-
-
-
0.4
-
1.4
2
V
VIH
ON/OFF Input High Voltage
ON/OFF Input Leakage
-
V
IN = 2.7 V to ≤ 4.2 V
VIN > 4.2 V to 5.5 V
VON/OFF = 5.5 V
2.4
-
-
ISINK
µA
1
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2
Document Number: 73851
S-62494–Rev. B, 11-Dec-06
SiP4282A
Vishay Siliconix
SPECIFICATIONS
Limits
- 40 to 85 °C
Test Conditions Unless Specified
IN = 5.0, TA = - 40 °C to 85 °C
V
Mina
Typb
Maxa
(Typical values are at TA = 25 °C)
Parameter
Symbol
Unit
SiP4282A-1 Version
TD(ON)
T(ON)
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
Output Turn-On Delay Time
Output Turn-On Rise Time
Output Turn-Off Delay Time
SiP4282A-3 Version
-
-
-
20
1000
4
40
1500
10
µs
TD(OFF)
TD(ON)
T(ON)
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
Output Turn-On Delay Time
Output Turn-On Rise Time
Output Turn-Off Delay Time
Output Pull-Down Resistance
-
-
-
-
20
100
4
40
150
10
µs
W
150
250
Notes:
a. The algebriac 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. Part requires minimum start-up of VIN ≥ 2.0 V to ensure operation down to 1.8 V.
d. For VIN outside this range consult typical ON/OFF threshold curve.
PIN CONFIGURATION
1
2
3
V
V
OUT
OUT
6
IN
5
4
IN
GND
ON/OFF
Bottom View
PPAK SC75-6 Package
PIN DESCRIPTION
Pin Number
PPAK SC75-6
Name
VIN
Function
1, 2
3
This pin is the P-Channel MOSFET source connection. Bypass to ground through a 1 µF capacitor.
GND
Ground Connection
4
ON/OFF
OUT
Enable Input
5, 6
This pin is the P-Channel MOSFET drain connection. Bypass to ground through a 0.1 µF capacitor.
SELECTION GUIDE
Slew Rate
(typ)
Active
Pull Down
Part Number
Enable
SiP4282A-1-T1-E3
SiP4282A-3-T1-E3
1 ms
No
Active high
Active high
100 µs
Yes
ORDERING INFORMATION
Part Number
Marking
LAXXX
LCXXX
Temperature Range
Package
SiP4282ADVP-1-E3
SiP4282ADVP-3-E3
PPAK SC75-6
PPAK SC75-6
- 40 °C to 85 °C
Notes:
XXX = Lot Code
Document Number: 73851
S-62494–Rev. B, 11-Dec-06
www.vishay.com
3
SiP4282A
Vishay Siliconix
TYPICAL CHARACTERISTICS internally regulated, 25 °C, unless otherwise noted
3.5
3
3.5
3
V
IN
= 5 V
2.5
2
2.5
2
1.5
1
1.5
1
V
IN
= 3 V
0.5
0
0.5
0
1
2
3
4
5
6
- 40
- 15
10
35
60
85
Temperature (°C)
V
(V)
IN
Quiescent Current vs. Input Voltage
Quiescent Current vs. Temperature
550
500
450
400
350
300
250
200
150
100
250
200
150
100
50
I
= 500 mA
LOAD
1 A
V
= 3 V
IN
V
= 5 V
IN
500 mA
100 mA
0
- 40
- 15
10
Temperature (°C)
RDS(ON) vs. Temperature
35
60
85
1.5
2
2.5
3
3.5
(V)
4
4.5
5
5.5
V
IN
RDS(ON) vs. Input Voltage
2.2
100
2
1.8
1.6
1.4
1.2
1
80
60
40
20
0
V
IH
V
IL
0.8
0.6
0.4
1.5
2
2.5
3
3.5
(V)
4
4.5
5
5.5
- 40
- 15
10
Temperature (°C)
Off Switch Current vs. Temperature
35
60
85
V
IN
ON/OFF Threshold vs. Input Voltage
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Document Number: 73851
S-62494–Rev. B, 11-Dec-06
SiP4282A
Vishay Siliconix
TYPICAL WAVEFORMS
ON/OFF (5 V/div.)
V
OUT
(2 V/div.)
I
IN
(200 mA/div.)
Time (5 µs/div)
SiP4282A-1 Turn-Off (VIN = 3 V, RLOAD = 6 Ω)
SiP4282A-1 Turn-On (VIN = 3 V, RLOAD = 6 Ω)
ON/OFF (5 V/div.)
ON/OFF (5 V/div.)
V
OUT
(2 V/div.)
V
OUT
(2 V/div.)
I
IN
(200 mA/div.)
I
IN
(200 mA/div.)
Time (5 µs/div)
Time (500 µs/div)
SiP4282A-1 Turn-Off (VIN = 5 V, RLOAD = 10 Ω)
SiP4282A-1 Turn-On (VIN = 5 V, RLOAD = 10 Ω)
Document Number: 73851
S-62494–Rev. B, 11-Dec-06
www.vishay.com
5
SiP4282A
Vishay Siliconix
TYPICAL WAVEFORMS
ON/OFF (5 V/div.)
ON/OFF (5 V/div.)
(2 V/div.)
(2 V/div.)
(200 mA/div.)
(200 mA/div.)
Time (50 µs/div)
Time (5 µs/div)
SiP4282A-3 Turn-Off (VIN = 3 V, RLOAD = 6 Ω)
SiP4282A-3 Turn-On (VIN = 3 V, RLOAD = 6 Ω)
ON/OFF (5 V/div.)
ON/OFF (5 V/div.)
(2 V/div.)
(200 mA/div.)
(2 V/div.)
(200 mA/div.)
Time (50 µs/div)
Time (5 µs/div)
SiP4282A-3 Turn-Off (VIN = 5 V, RLOAD = 10 Ω)
SiP4282A-3 Turn-On (VIN = 5 V, RLOAD = 10 Ω)
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Document Number: 73851
S-62494–Rev. B, 11-Dec-06
SiP4282A
Vishay Siliconix
BLOCK DIAGRAM
V
OUT
IN
Under
Voltage
Lockout
Turn-On
Slew Rate
Control
Level
Shift
ON/OFF
SiP4282A-3 version only
GND
SiP4282A Functional Block Diagram
DETAILED DESCRIPTION
through the ON/OFF pin) and discharges the output
pin through a small internal resistor hence, turning off
the load.
The SiP4282A is a P-Channel MOSFET power
switches designed for high-side slew rate controlled
load-switching applications. Once turned on, the slew-
rate control circuitry is activated and current is ramped
in a linear fashion until it reaches the level required for
the output load condition. This is accomplished by first
elevating the gate voltage of the MOSFET up to its
threshold voltage and then by linearly increasing the
gate voltage until the MOSFET becomes fully
enhanced. At this point, the gate voltage is then quickly
In instances where the input voltage falls below 1.4 V
(typically) the under voltage lock-out circuitry protects
the MOSFET switch from entering the saturation
region or operation by shutting down the chip.
APPLICATION INFORMATION
increased to the full input voltage to reduce R
the MOSFET switch and minimize any associated
power losses.
of
DS(ON)
Input Capacitor
While a bypass capacitor on the input is not required,
a 1 µF or larger capacitor for C is recommended in
IN
almost all applications. The Bypass capacitor should
be placed as physically close as possible to the
SiP4282A to be effective in minimizing transients on
the input. Ceramic capacitors are recommended over
tantalum because of their ability to withstand input cur-
rent surges from low impedance sources such as bat-
teries in portable devices.
The SiP4282A-1 version has a modest 1 ms turn on
slew rate feature, which significantly reduces in-rush
current at turned on time and permits the load switch
to be implemented with a small input capacitor, or no
input capacitor at all, saving cost and space. In addi-
tion to a 100 µs minimized slew rate, the SIP4282A-3
features a shutdown output discharge circuit which is
activated at shutdown (when the part is disabled
Document Number: 73851
S-62494–Rev. B, 11-Dec-06
www.vishay.com
7
SiP4282A
Vishay Siliconix
Output Capacitor
A 0.1 µF capacitor or larger across V
thermal resistance for the SC-75 PPAK package,
θ = 90 °C/W, and the ambient temperature, T ,
J-A
and GND is
OUT
A
recommended to insure proper slew operation. C
which may be formulaically expressed as:
OUT
may be increased without limit to accommodate any
load transient condition with only minimal affect on the
SiP4282A turn on slew rate time. There are no ESR or
capacitor type requirement.
TJ (max) − T
125 − T
90
A
A
P (max)
=
=
θ
J−A
It then follows that, assuming an ambient temperature
of 70 °C, the maximum power dissipation will be limited
to about 610 mW.
Enable
The ON/OFF pin is compatible with both TTL and
CMOS logic voltage levels.
So long as the load current is below the 1.2 A limit, the
maximum continuous switch current becomes a func-
tion two things: the package power dissipation and the
Protection Against Reverse Voltage Condition
The P-channel MOSFET pass transistor has an intrin-
sic diode that is reversed biased when the input volt-
R
at the ambient temperature.
DS(ON)
age is greater than the output voltage. Should V
OUT
exceed V , this intrinsic diode will become forward
biased and allow excessive current to flow into the IC
IN
As an example let us calculate the worst case maxi-
mum load current at T = 70 °C. The worst case
A
thru the V
pin and potentially damage the IC
OUT
R
at 25 °C occurs at an input voltage of 1.8 V
DS(ON)
device. Therefore extreme care should be taken to
prevent V from exceeding V .
and is equal to 480 mΩ. The R
) at 70 °C can be
DS(ON
OUT
IN
extrapolated from this data using the following formula
In conditions where V
diode in parallel with the internal intrinsic diode is rec-
ommended to protect the SiP4282A.
exceeds V a Schottky
IN
OUT
R
(at 70 °C) = R (at 25 °C) x (1 + T x ΔT)
DS(ON)
DS(ON)
C
Where T is 3300 ppm/°C. Continuing with the calcu-
C
lation we have
Thermal Considerations
The SiP4282A is designed to maintain a constant out-
put load current. Due to physical limitations of the lay-
out and assembly of the device the maximum switch
current is 1.2 A, as stated in the ABS MAX table. How-
ever, another limiting characteristic for the safe operat-
ing load current is the thermal power dissipation of the
package. To obtain the highest power dissipation (and
a thermal resistance of 90 °C/W) the power pad of the
device should be connected to a heat sink on the
printed circuit board.
R
(at 70 °C) = 480 mΩ x (1 + 0.0033 x (70 °C -
DS(ON)
25 °C)) = 551 mΩ
The maximum current limit is then determined by
P (max)
I
(max) 〈
LOAD
R
(
)
DS ON
which in case is 1.05 A. Under the stated input voltage
condition, if the 1.05 A current limit is exceeded the
internal die temperature will rise and eventually, possi-
bly damage the device.
The maximum power dissipation in any application
is
dependant
on
the
maximum
junction
temperature, T
= 125 °C, the junction-to-ambient
J(MAX)
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?73851.
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8
Document Number: 73851
S-62494–Rev. B, 11-Dec-06
Legal Disclaimer Notice
Vishay
Notice
Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc.,
or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, by
estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's
terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express
or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness
for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.
Customers using or selling these products for use in such applications do so at their own risk and agree to fully
indemnify Vishay for any damages resulting from such improper use or sale.
Document Number: 91000
Revision: 08-Apr-05
www.vishay.com
1
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