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AAT4280-1 Datasheet(PDF) 1 Page - Advanced Analogic Technologies |
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AAT4280-1 Datasheet(HTML) 1 Page - Advanced Analogic Technologies |
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1 / 14 page  SmartSwitch™ General Description The AAT4280 SmartSwitch™ is a member of AATI's Application Specific Power MOSFET™ (ASPM™) product family. The AAT4280 is a P-channel MOS- FET power switch designed for high-side load- switching applications. The P-channel MOSFET device has a typical RDS(ON) of 80mΩ, allowing increased load switch power handling capacity. This device is available in three different versions with flexible turn on and off characteristics from very fast to slew rate limited. The standard AAT4280 (-1) ver- sion has a slew rate limited turn on load switch and is functionally compatible with the AAT42 50 device while offering superior RDS(ON) characteristics. The AAT4280 (-2) version features fast load switch turn on capabilities, typically less than 210ns turn on and 3µs turn off times. The AAT4280 (-3) variation offers a shutdown load discharge circuit to rapidly turn off a load circuit when the switch is disabled. All AAT4280 load switch versions operate with an input voltage ranging from 1.8V to 5.5V, making them ideal for both 3V and 5V systems. The AAT4280 also features an under voltage lock out which turns the switch off when an input under-voltage condition exists. Input logic levels are TTL and 2.5 volt to 5 volt CMOS compatible. The quiescent supply cur- rent is very low, typically 2 .5µA. In shutdown mode, the supply current decreases to less than 1µA. The AAT4280 is available in a 6 pin SOT23 or 8 pin SC70JW package and is specified over -40°C to 85°C temperature range. Features • 1.8V to 5.5V Input voltage range • Very Low RDS(ON), typically 80mΩ (5V) • Slew rate limited turn-on time options •1ms • 0. 5µs • 100µs • Fast shutdown load discharge option • Low quiescent current • 2.5µA typ • 1µA max in shutdown • TTL/CMOS input logic level • Temperature range -40ºC to 85°C • 4kV ESD rating • 6 pin SOT23 or SC70JW-8 package Applications • Cellular telephones • Digital still cameras • Personal digital assistants (PDA) • Hot swap supplies • Notebook computers • Personal communication devices AAT4280 Slew Rate Controlled Load Switch Typical Application AAT4280 COUT 0.1 µF CIN 1 µF OUT IN GND VOUT GND GND VIN ON/OFF GND IN ON 4280.2002.2.0.92 1 |
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