SP619 Datasheet, PDF (1/7 Pages) Sipex Corporation – High Current Power Switch

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
EN
ON/OFF
80K
100K
Cout
.1µF
LOAD
GND
April 2008 Rev L
SP619 High Current Power Switch
1
© 2008 EXAR Corporation