AP1186T5

AP1186 1.5A ULTRA LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Features • • • • • • • • Adjustable or Fixed output voltage 1.5V, 1.8V, 2.5V, 3.3V, 5.0V 0.5V Maximum Dropout voltage at 1.5A Load current Built-in Thermal Shutdown Output Current Limiting Fast transient response Good noise rejection Packages: TO220-5L, TO263-5L Lead Free Finish/RoHS Compliant for Lead Free products (Note 1) General Description AP1186 is a 1.5A 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 a switcher can be achieved without the cost and complexity associated with a switching regulator. One such application is the new graphic chip sets that require anywhere from 2.4V to 2.7V supply. Ordering Information AP 1186 Package K5:TO263-5L T5:TO220-5L X-X XX Lead Free L : Lead Free Package Packing -U : Tube -13: Taping Vout Blank : Adj 15 : 1.5V 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. Device Lead-free Tube Package Packaging Part Number (Note 2) Code Quantity Suffix T5 K5 TO220-5L TO263-5L 50 50 -U -U 13” Tape and Reel Part Number Quantity Suffix NA 800/Tape & Reel NA -13 Lead-free AP1186T5 AP1186K5 Note: 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. Typical Application 3V + 470uF + Vin Vctrl Vou t GND Vsense 5 4 3 2 1 5V 470uF 2.5 /1.5A V + 470uF AP1186 Rev. 1 1 of 9 www.diodes.com MARCH 2007 © Diodes Incorporated AP1186 1.5A ULTRA LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Block Diagram Vin Vctrl + + CURRENT LIMIT THERMAL SHUTDOWN 1.25V + Adj + Vout Vsense Package Connect Diagram 5 PIN TO263 FRONT VIEW 5 4 3 2 1 Tab is Vout Vin Vctrl Vout Adj(GND) Vsense 5 PIN TO220 FRONT VIEW 5 4 3 2 1 Tab is Vout Vin Vctrl Vout Adj(GND) Vsense Pin Descriptions Name Vsense Adj (GND) Vout Vctrl O I I/O I Description This pin is the positive side of the reference that allows remote load sensing to achieve excellent load regulation. A minimum of 10uF capacitor must be connected from this pin to ground to insure stability. A resistor divider from this pin to the Vout pin and ground sets the output voltage. (GND only for fixed mode) The output of the regulator. A minimum of 100uF capacitor must be connected from this pin to ground to insure stability. 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 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 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. Vin I AP1186 Rev. 1 2 of 9 www.diodes.com MARCH 2007 © Diodes Incorporated AP1186 1.5A ULTRA LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Absolute Maximum Ratings Symbol Vin Vctrl PD TST TOP Parameter Input Voltage Control Input Voltage Power Dissipation Storage Temperature Operating Junction Temperature Range Rating 16 18 Internally Limited -65 to +150 0 to +150 Unit V V oC oC Electrical Characteristics Unless otherwise specified, these specifications apply over, Cin = 1uF, Cout = 10uF, and TJ = 0 to 150 C. Typical value refers to TA = o 25 C. Vout = Vsense. o SYM. VREF Parameter Reference Voltage Vout Test Condition TA = 25oC,(VIN-VOUT) = 0.5V,IO = 10mA AP1186-Adj Vctrl = VIN+1V IOUT = 10mA, TA = 25oC, 2V≦VIN≦12V AP1186-1.5 Vctrl = VIN+1V IOUT = 10mA, TA = 25oC, 2.3V≦VIN≦12V AP1186-1.8 Vctrl = VIN+1V IOUT = 10mA, TA = 25oC, 3V≦VIN≦12V Output Voltage AP1186-2.5 Vctrl = VIN+1V IOUT = 10mA, TA = 25oC, 3.8V≦VIN≦12V AP1186-3.3 Vctrl = VIN+1V IOUT = 10mA, TA = 25oC, 5.5V≦VIN≦12V AP1186-5.0 Vctrl = VIN+1V IO = 10mA, VOUT+0.5V