AX1184

AX1184 4A Ultra Low Dropout Positive Linear Regulator „ Feature 0.7V maximum dropout voltage at 4A load current Built-in Thermal shutdown Output current limiting Adjustable output voltage: 1.250V Fast transient response Good noise rejection Packages: SOP-8L, TO220-5L and TO263-5L „ General Description AX1184 is a 4A regulator with extremely low dropout voltage. This product is specifically designed to provide well regulated supply for applications requiring 2.8V or lower voltages from 3.3V ATX power supplies where high efficiency of the switch can be achieved without the cost and complexity associated with switching regulator. One such application is the new graphic chipsets that requires anywhere from 2.4V to 2.7V supply. „ Ordering Information AX1184 X X Package S:SOP-8L M5:TO263-5L T5:TO220-5L VÛm w`R yÑb € ww w.g ofot ec h.co m Packing Blank : Tube A : Taping „ Typical Application VIN+2.5V VIN+5V 1 2 4 5 C1 100uF C2 100uF AX1184-ADJ Vsense ADJ/GND Vctrl VIN VOUT 3 R1 100 R2 220 Vout=1.8V C3 100uF VOUT = VREF x (1+ R2 ) R1 VREF = 1.250V 1/10 Axelite Confidential Materials, do not copy or distribute without written consent 1/11 Rev.1.0 Jan.16, 2008 cˆgCNãtUFÿmñW3^VÛmw`RyÑb€g–PQlSø u5‹Ýÿ 0755-8398 3377 135 9011 2223 http://www.gofotech.com 4A Ultra Low Dropout Positive Linear Regulator AX1184 „ Block Diagram Vin Vctrl CURRENT LIMIT + + 1.25V + THERMAL SHUTDOWN Adj/ GND + Vout Vsense „ Pin Configuration TOP VIEW 5 4 3 2 1 Vsense Vin Vctrl Adj(GN...