AP1184T5-18L-U Diodes Incorporated

NOT RECOMMENDED FOR NEW DESIGN AP1184 4A ULTRA LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Features General Description 0.85V maximum dropout voltage at 4A load current AP1184 is a 4A regulator with extremely low dropout voltage. This product is specifically designed to provide well regulated Built-in Thermal shutdown supply for applications requiring 2.8V or lower voltages from 3.3V Output current limiting ATX power supplies where high efficiency of the switch can be Adjustable or fixed output voltage1.5V, 1.8V, 2.5V, achieved without the cost and complexity associated with 3.3V, 5.0V switching regulator. One such application is the new graphic Fast transient response chipsets that requires anywhere from 2.4V to 2.7V supply. Good noise rejection Packages: TO220-5L and TO263-5L Lead Free Finish/ RoHS Complian (Note 1) Ordering Information XX AP1184 - XX L - X Package Vout Lead Free Packing K5 : TO263-5L L : Lead Free U : Tube Blank : Adj 13 : Tape & Reel T5 : TO220-5L 15 = 1.5V 18 = 1.8V 25 = 2.5V 33 = 3.3V 50 = 5.0V Tube 13 Tape and Reel Package Packaging Device Part Number Part Number Code (Note 2) Quantity Quantity Suffix Suffix AP1184K5XXL-U K5 TO263-5L 50 -U NA NA Lead-free AP1184K5XXL-13 K5 TO263-5L NA NA 800/Tape & Reel -13 Lead-free AP1184T5XXL-U T5 TO220-5L 50 -U NA NA Lead-free Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied, see EU Directive 2002/95/EC Annex Notes. 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at NOT RECOMMENDED FOR NEW DESIGN AP1184 4A ULTRA LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Pin Assignments FRONT VIEW FRONT VIEW 5 Vin Vin 5 4 Vctrl Vctrl 4 3 Vout 3 Vout 2 Adj(GND) Adj(GND) 2 1 Vsense 1 Vsense Tab is Vout Tab is Vout TO263-5L TO220-5L Pin Descriptions Pin Numbers with standard type are for TO220-5L, TO263-5L packages. Name I/O Description Adj A resistor divider from this pin to the Vout pin and ground sets the output voltage. (GND (GND) only for fixed mode) This pin is the positive side of the reference that allows remote load sensing to achieve Vsense I excellent load regulation. A minimum of 10uF capacitor must be connected from this pin to ground to insure stability. The input of the regulator. Typically a large storage capacitor is connected from this pin to ground to insure that the input voltage does not sag below the minimum dropout Vin I voltage during the load transient response. This pin must always be higher than Vout in order for the device to regulate. This pin is the supply pin for the internal control circuit as well as the base drive for the pass transistor. This pin must always be higher than the Vout pin in order to regulate the Vctrl I device. A minimum of 100uF capacitor must be connected from this pin to ground to insure stability. The output of the regulator. A minimum of 100uF capacitor must be connected from this Vout O pin to ground to insure stability. Block Diagram Vin Vout Vsense Vctrl + + + 1.25V CURRENT LIMIT + THERMAL Adj SHUTDOWN AP1184 Rev. 6 - 3 2 of 12 OCTOBER 2014 www.diodes.com Diodes Incorporated