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What is SP619?

This electronic component, produced by the manufacturer "Exar", performs the same function as "High Current Power Switch".


SP619 Datasheet PDF - Exar

Part Number SP619
Description High Current Power Switch
Manufacturers Exar 
Logo Exar Logo 


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No Preview Available ! SP619 datasheet, circuit

SP619
High Current Power Switch
FEATURES
• Max RDS(ON) .377 Ohms
• Overcurrent deactivation 800mA
• Max leakage current less than 2µA
while deactivated
• Small 6 pin SOT-23 package
• Built-in Over-temperature Protection
• 4.5V to 5.5V input voltage range
APPLICATIONS
• Ultra low cost handsets
• PDA, DSC, MP3 players
• Cell phones
• Power Distribution Switch
• Battery-Charger Circuit
654
SP619
SOT23-6
123
DESCRIPTION
The SP619 is a low RDS(ON) high current switch designed with precision current lim-
iting to protect connected devices from damage due to a short circuit condition or
against current surges that may cause the supply voltages to fall out of regula-
tion. This switch is functional over an input voltage range of 2.5V to 7V, but is targeted
at 5V applications. The SP619 is also protected from thermal overload which
limits power dissipation. In shutdown mode, the supply current drops to 2µA.
Vin
Vin
SP619
TYPICAL APPLICATION CIRCUIT
Vout
Cin .1µF
ON/OFF
EN
80K
100K
Cout
.1µF
LOAD
GND
April 2008 Rev L
SP619 High Current Power Switch
1
© 2008 EXAR Corporation

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SP619 equivalent
Overtemperature Protection
The SP619 has built-in overtemperature
protection to protect the part against dam-
age if the die temperature gets too hot. The
typical thermal cutoff is about 150ºC. The
part will self recover if the temperature drops
below the thermal restart threshold of about
120ºC.
Layout Considerations
The input and output decoupling capacitors
should be placed as close as possible to the
LQSXWDQGRXWSXWSLQV7KH*1'SLQVKRXOG
EH VWLWFKHG WR WKH *1' SODLQ WR KHOS ZLWK
thermal performance. The input and output
traces should be as large as possible. The
.Ÿ LV DOVR UHFRPPHQGHG LQ WKH GHVLJQ
and should be placed close to the output de-
coupling cap.
Vin 146-6642-00
U1 Vout
ON/OFF
Solved by
GND
SP619
TM
Recommended Layout
THEORY OF OPERATION
April 2008 Rev L
SP619 High Current Power Switch
5
© 2008 EXAR Corporation


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for SP619 electronic component.


Information Total 7 Pages
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Download [ SP619.PDF Datasheet ]

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