AT1799 Datasheet, PDF (9/14 Pages) Aimtron Technology – 2A Step-Down Voltage Regulator

AT1799
2A Step-Down Voltage Regulator
Cycle-by-Cycle Over-Current Protection
The AT1799 provides cycle-by-cycle over-current protection. Current limit is
accomplished using a separate dedicated comparator. If the current sense amplifier
output voltage is larger than current-limited threshold level, it will be immediately
turned off power MOS. The current-limit feature protects against a hard short or over
current fault at the output.
Thermal-Overload Protection
Thermal-overload protection limits total power dissipation in the AT1799. When the junction
temperature exceeds Tj=160 Ċ, a thermal sensor activates the thermal protection, which shuts
down the IC, allowing the IC to cool. Once the device cools down by 15 Ċ, IC will
automatically recover normal operation. For continuous operation , do not exceed the absolute
maximum junction-temperature rating of Tj=150 Ċ.










2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: [phone] Fax: [phone]
WWW: http://www.aimtron.com.tw
8/23/2006 REV:1.1
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