AP1084T

AP1084 5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Features • • • • • • • • • 1.4V Maximum Dropout at Full Load Current Built-in Thermal Shutdown Output Current Limiting Adjustable Output Voltage or Fixed 1.5V, 1.8V, 2.5V, 3.3V, 5.0V Fast Transient Response Good Noise Rejection Lead-Free Package: TO252-3L, TO263-3L, and TO220-3L TO252-3L: Available in “Green” Molding Compound (No Br, Sb) (Note 1) Lead Free Finish/RoHS Compliant for Lead Free products (Note 2) General Description AP1084 is a low dropout positive adjustable or fixed-mode regulator with 5.0A output current capability. The product is specifically designed to provide well-regulated supply for low voltage IC applications such as high-speed bus termination and low current 3.3V logic supply. AP1084 is also well suited for other applications such as VGA cards. AP1084 is guaranteed to have lower than 1.4V dropout at full load current making it ideal to provide well-regulated outputs of 1.25 to 3.3V with 4.7 to 12V input supply. Ordering Information AP1084 X Package D : TO252-3L K : TO263-3L T : TO220-3L XX X X Lead Free L : Lead Free G : Green (Note 1) 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. Green is only available for TO252-3L. 2. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7. Device AP1084D AP1084K AP1084T Tube/Bulk Package Packaging Part Number Code (Note 3) Quantity Suffix D K T TO252-3L TO263-3L TO220-3L 80 50 50 -U -U -U 13” Tape and Reel Part Number Quantity Suffix 2500/Tape & Reel 800/Tape & Reel NA -13 -13 NA Lead-free Lead-free Note: 3. 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. AP1084 Rev. 1 1 of 10 www.diodes.com FEBRUARY 2007 © Diodes Incorporated AP1084 5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Block Diagram Vin 3 2 Vout + + CURRENT LIMIT + Thermal Shutdown 1 Adj 1.25V + Pin Assignment TO263-3L FRONT VIEW 3 2 1 Tab is Vout TO220-3L FRONT VIEW 3 2 1 Tab is Vout Vin Vout Adj ( GND) Vout Adj ( GND) Vin TO252-3L FRONT VIEW 3 2 1 Tab is Vout Vout Adj ( GND) Vin AP1084 Rev. 1 2 of 10 www.diodes.com FEBRUARY 2007 © Diodes Incorporated AP1084 5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Pin Description Function Name Adj (GND) Vout I/O TO263/ 252/220 1 Adjustable (Ground only for fixed mode) A resistor divider from this pin to the Vout pin and ground sets the output voltage (Ground only for Fixed-Mode). The output of the regulator. A minimum of 10uF (0.15Ω ≤ ESR ≤ 20Ω) capacitor must be connected from this pin to ground to insure stability. The input pin of regulator. Typically a large storage capacitor (0.15Ω ≤ ESR ≤ 20Ω) 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 1.4V (1.3V) higher than Vout in order for the device to regulate properly. I O 2 Vin I 3 Absolute Maximum Ratings Symbol Vin TST TOP TM Parameter DC Supply Voltage Storage Temperature Operating Junction Temperature Range Maximum Junction Temperature Rating -0.3 to 12 -65 to +150 0 to +125 150 Unit V oC oC oC AP1084 Rev. 1 3 of 10 www.diodes.com FEBRUARY 2007 © Diodes Incorporated AP1084 5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Electrical Characteristics Sym. VREF Parameter (Under Operating Conditions) Conditions o Min. 1.225 1.470 1.764 2.450 3.235 4.900 Typ. 1.250 1.500 1.800 2.500 3.300 5.000 Max. 1.275 0.2 1.530 1.836 2.550 3.365 5.100 1 Unit V % V V V V V % mV mV mV mV mV V A mA % O Reference Voltage Io = 10mA, TA = 25 C, (Vin-Vout) = 1.5V AP1084-XXX IO = 10mA, VOUT+1.5V