AP1186K5-18L-13 Diodes Incorporated

AP1186 1.5A ULTRA LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR General Description Features Adjustable or Fixed output voltage 1.5V, 1.8V, 2.5V, AP1186 is a 1.5A regulator with extremely low dropout voltage. 3.3V, 5.0V This product is specifically designed to provide well-regulated supply for applications requiring 2.8V or lower voltages from 3.3V 0.5V Maximum Dropout voltage at 1.5A Load current ATX power supplies where high efficiency of a switcher can be Built-in Thermal Shutdown achieved without the cost and complexity associated with a Output Current Limiting switching regulator. One such application is the new graphic chip Fast transient response sets that require anywhere from 2.4V to 2.7V supply. Good noise rejection Packages: TO220-5L, TO263-5L Lead Free Finish/RoHS Compliant for Lead Free products (Note 1) Ordering Information AP 1186 X - X X X Package Vout Lead Free Packing K5:TO263-5L Blank : Adj -U : Tube L : Lead Free Package T5:TO220-5L 15 : 1.5V -13: Taping 18 : 1.8V 25 : 2.5V 33 : 3.3V 50 : 5.0V Note: 1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7. Tube 13 Tape and Reel Package Packaging Device Part Number Part Number (Note 2) Code Quantity Quantity Suffix Suffix AP1186T5 T5 TO220-5L 50 -U NA NA Lead-free AP1186K5 K5 TO263-5L 50 -U 800/Tape & Reel -13 Lead-free Note: 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at AP1186 1.5A ULTRA LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Block Diagram Vin Vout Vsense Vctrl + + + - 1.25V CURRENT LIMIT + THERMAL Adj SHUTDOWN Package Connect Diagram 5 PIN TO263 5 PIN TO220 FRONT VIEW FRONT VIEW Vin 5 Vin 5 Vctrl 4 Vctrl 4 3 Vout 3 Vout Adj(GND) 2 Adj(GND) 2 1 Vsense 1 Vsense Tab is Vout Tab is Vout Pin Descriptions Name I/O Description This pin is the positive side of the reference that allows remote load sensing to achieve excellent load Vsense I regulation. A minimum of 10uF capacitor must be connected from this pin to ground to insure stability. Adj A resistor divider from this pin to the Vout pin and ground sets the output voltage. (GND) (GND only for fixed mode) The output of the regulator. A minimum of 100uF capacitor must be connected from this pin to ground Vout O to insure stability. This pin is the supply pin for the internal control circuit as well as the base drive for the pass transistor. Vctrl I This pin must always by higher than the Vout pin in order for the device to regulate. A minimum of 100uF 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 Vin I insure that the input voltage does not sag below the minimum dropout voltage during the load transient response. This pin must always be higher than Vout in order for the device to regulate. AP1186 Rev. 1 2 of 9 MARCH 2007 www.diodes.com Diodes Incorporated -