SIP4282A Vishay, SIP4282A Datasheet

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SIP4282A

Manufacturer Part Number
SIP4282A
Description
Vishay Power Ics 1.2 A Slew Rate Controlled Load Switch In Ppak Sc75
Manufacturer
Vishay
Datasheet

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DESCRIPTION
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 MOSFET device
that has a 140 mΩ R
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 shutdown load discharge circuit to
instantaneously turn off a load circuit when the switch is
disabled.
The SiP4282A load switch operates with an input voltage
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 levels are TTL and
2.5 V to 5 V CMOS compatible. This device has a very low
operating current (typically 25 nA), making it ideal for battery-
powered applications. In shutdown mode, the supply current
de-creases to less than 1 µA.
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
Document Number: 74480
S-71378–Rev. B, 23-Jul-07
1.2 A Slew Rate Controlled Load Switch in PPAK SC75-6
GND
V
IN
C
1 µF
DS(ON)
IN
typically to increase load
ON/OFF
1
2
4
SiP4282A Typical Application Circuit
ON/OFF
V
V
IN
IN
New Product
SiP4282A
GND
3
FEATURES
APPLICATIONS
• 1.5 V to 5.5 V Input Voltage range
• Very Low R
• Slew rate limited turn-on time options
• Fast shutdown load discharge option
• Low quiescent current, typically 25 nA
• Low Shutdown Current < 1 µA
• TTL/CMOS input logic level
• Cellular telephones
• Digital still cameras
• Personal digital assistants (PDA)
• Hot swap supplies
• Notebook computers
• Personal communication devices
at 5 V and 175 mΩ at 3 V
- SiP4282A-1: 1 ms
- SiP4282A-3: 100 µs
SC-75 Package
USB
OUT
OUT
DS(ON)
6
5
, typically 140 mΩ
C
0.1 µF
Vishay Siliconix
OUT
SiP4282A
V
GND
www.vishay.com
OUT
RoHS
COMPLIANT
1

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SIP4282A Summary of contents

Page 1

... 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 shutdown load discharge circuit to instantaneously turn off a load circuit when the switch is disabled ...

Page 2

... RECOMMENDED OPERATING RANGE Parameter Input Voltage Range ( Continuous Switch Current Operating Temperature Range SPECIFICATIONS Parameter SiP4282A All Versions c Operating Voltage Quiescent Current Off Suply Current Off Switch Current On-Resistance On-Resistance Temp-Coefficient ON/OFF Input Low Voltage ON/OFF Input High Voltage ON/OFF Input Leakage www ...

Page 3

... SPECIFICATIONS Parameter SiP4282A-1 Version Output Turn-On Delay Time Output Turn-On Rise Time Output Turn-Off Delay Time SiP4282A-3 Version Output Turn-On Delay Time Output Turn-On Rise Time Output Turn-Off Delay Time Output Pull-Down Resistance Notes: a. The algebriac convention whereby the most negative value is a minimum and the most positive a maximum. ...

Page 4

... SiP4282A Vishay Siliconix TYPICAL CHARACTERISTICS internally regulated, 25 °C, unless otherwise noted 100 1.5 2 2 (V) IN Quiescent Current vs. Input Voltage 250 200 150 V IN 100 Temperature (°C) R vs. Temperature DS(ON) 100 ...

Page 5

... Time (500 µs/div Ω) SiP4282A-1 Turn-Off (V LOAD SiP4282A Vishay Siliconix ON/OFF (5 V/div V/div.) OUT I (200 mA/div.) IN Time (5 µs/div Ω) SiP4282A-1 Turn-Off ( LOAD ON/OFF (5 V/div V/div.) OUT I (200 mA/div.) IN Time (5 µs/div Ω LOAD www ...

Page 6

... SiP4282A-3 Turn- www.vishay.com 6 New Product (2 V/div.) (200 mA/div Ω) SiP4282A-3 Turn-Off (V LOAD (2 V/div.) (200 mA/div Ω) SiP4282A-3 Turn-Off (V LOAD ON/OFF (5 V/div.) (2 V/div.) (200 mA/div.) Time (5 µs/div Ω LOAD ON/OFF (5 V/div.) (2 V/div.) (200 mA/div.) Time (5 µs/div Ω ...

Page 7

... At this point, the gate voltage is then quickly increased to the full input voltage to reduce R MOSFET switch and minimize any associated power losses. 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 input capacitor at all, saving cost and space. In addition to a 100 µ ...

Page 8

... SiP4282A. Thermal Considerations The SiP4282A 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 1 stated in the ABS MAX table. However, another limiting characteristic for the safe operating load current is the thermal power dissipation of the package ...

Page 9

... 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 ...

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