AP1084TXXG-U

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 Packages: TO252-3L, TO263-3L and TO220-3L TO252-3L, TO263-3L and TO220-3L: Available in “Green” Molding Compound (No Br, Sb) Lead Free Finish/RoHS Compliant (Note 1) 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. Typical Application Circuit 5.0V to 3.3V Fixed Mode Regulator 5V C1 100uF Vin Vout GND Tab is Vout 3.3V/5A C2 100uF Vin Vout Adj Tab is Vout R1 121Ω R2 121Ω C2 100uF 2.5V/5A 5V Adjustable Regulator C1 100uF Note: VO = VREF∗ (1 + R2 R1 ) AP1084 Rev. 9 DS31070 1 of 11 www.diodes.com JANUARY 2010 © Diodes Incorporated AP1084 5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Ordering Information AP1084 X XX X - X Package D : TO252-3L K : TO263-3L T : TO220-3L Vout Blank = Adj 15 = 1.5V 18 = 1.8V 25 = 2.5V 33 = 3.3V 50 = 5.0V Packaging (Note 2) TO252-3L TO252-3L TO263-3L TO263-3L TO220-3L TO220-3L Lead Free L : Lead Free G : Green Packing U : Tube 13 : Tape & Reel Device AP1084DXXL-13 AP1084DXXG-13 AP1084KXXL-13 AP1084KXXG-13 AP1084TXXL-U AP1084TXXG-U Notes: Package Code D D K K T T Tube Part Number Quantity Suffix NA NA NA NA NA NA NA NA 50 -U 50 -U 13” Tape and Reel Part Number Quantity Suffix 2500/Tape & Reel -13 2500/Tape & Reel -13 800/Tape & Reel -13 800/Tape & Reel -13 NA NA NA NA 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. 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. AP1084 Rev. 9 DS31070 2 of 11 www.diodes.com JANUARY 2010 © Diodes Incorporated AP1084 5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Pin Assignment (1) TO252-3L (2) TO263-3L ( Top View ) 3 2 1 Tab is VOUT (3) TO220-3L ( Top View ) VIN 3 VIN VOUT Adj (GND) VOUT Adj (GND) 2 1 Tab is VOUT ( Top View) 3 2 1 Tab is VOUT VIN VOUT Adj (GND) Pin Description Pin Name I/O Adj (GND) I Pin # 1 Description 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 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. VOUT O 2 VIN I 3 AP1084 Rev. 9 DS31070 3 of 11 www.diodes.com JANUARY 2010 © 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 + Absolute Maximum Ratings Symbol VIN TST TMJ Parameter DC Supply Voltage Storage Temperature Maximum Junction Temperature Rating -0.3 to 12 -65 to +150 150 Unit V oC oC Recommended Operating Conditions Symbol TOP Parameter Operating Junction Temperature Range Min 0 Max 125 Unit oC AP1084 Rev. 9 DS31070 4 of 11 www.diodes.com JANUARY 2010 © Diodes Incorporated AP1084 5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Electrical Characteristics Symbol Parameter (Under Operating Conditions) Conditions Io = 10mA, TA = 25 C, (VIN-VOUT) = 1.5V IO = 10mA, VOUT+1.5V