AP1117D18A

AP1117 1A Low Dropout Positive Adjustable or Fixed-Mode Regulator Features - 1.4V maximum dropout at full load current - Fast transient response - Output current limiting - Built-in thermal shutdown - Packages: SOT223, TO263, TO252, TO220, SOT89 - Good noise rejection - 3-Terminal Adjustable or Fixed 1.5V, 1.8V, 1.9V, 2.5V, 3.3V, 5.0V General Description AP1117 is a low dropout positive adjustable or fixed-mode regulator with minimum of 1A 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. AP1117 is also well suited for other applications such as VGA cards. AP1117 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 5.0 with 6.4V to 12V input supply. Applications - PC peripheral - Communication Ordering Information AP 1117 X XX X X Low Dropout Regulator Package E : SOT223-3L K : TO263-3L D : TO252-3L T : TO220-3L Y : SOT89-3L Vout Lead Free Packing Blank : Tube A : Taping Blank : ADJ Blank : Normal 15 : 1.5V L : Lead Free Package 18 : 1.8V 19: 1.9V 25 : 2.5V 33 : 3.3V 50 : 5.0V 5V Typical Circuit 5V C1 100uF Vin Vout GND Tab is Vout 3.3V/1A C2 100uF C1 100uF Vin Vout Adj Tab is Vout R1 121 Ω R2 121 Ω Vo 2.5V/1A C2 100uF ( 5V/3.3V fixed output ) ( 5V/2.5V ADJ output ) Note: Vo = VREF ∗ (1+ R2 ) R1 This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of this product. No rights under any patent accompany the sale of the product. Rev.1.0 Aug 17, 2004 1/11 AP1117 1A Low Dropout Positive Adjustable or Fixed-Mode Regulator Connection Diagram 3 PIN SOT223 ( Top View ) 3 2 1 Tab is Vout Vin Vout Adj (GND) 1 Tab is Vout 3 PIN SOT89 3 PIN TO220 Adj (GND) 3 PIN TO252 / TO263 ( Top View ) 3 2 Vin Vout 3 2 1 Tab is Vout Vin Vout Adj (GND) 3 2 1 Tab is Vout Vin Vout Adj (GND) Block Diagram Vin 3 2 Vout + + － CURRENT LIMIT 1.25V + 1 + － Thermal Shutdown GND (FIXED) 1 Adj Anachip Corp. www.anachip.com.tw 2/11 Rev.1.0 Aug 17, 2004 AP1117 1A Low Dropout Positive Adjustable or Fixed-Mode Regulator Pin Descriptions NAME I/O PIN # FUNCTION Adj (GND) I 1 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 capacitor (0.15Ω ≤ ESR ≤ 20Ω) 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 1.3V higher than Vout in order for the device to regulate properly. Vout O 2 Vin I 3 Absolute Maximum Ratings Symbol Parameter Rating Unit Vin PD TST TOP DC Supply Voltage Power Dissipation Storage Temperature Operating Junction Temperature Range -0.3 to 12 Internally Limited -65 to +150 0 to +150 V oC oC Anachip Corp. www.anachip.com.tw 3/11 Rev.1.0 Aug 17, 2004 AP1117 1A Low Dropout Positive Adjustable or Fixed-Mode Regulator Electrical Characteristics (Under Operating Conditions) PARAMETER Reference Voltage AP1117-ADJ AP1117-1.5 AP1117-1.8 AP1117-1.9 Output Voltage AP1117-2.5 AP1117-3.3 AP1117-5.0 Line Regulation AP1117-XXX AP1117-ADJ AP1117-1.5 AP1117-1.8 Load Regulation AP1117-1.9 AP1117-2.5 AP1117-3.3 AP1117-5.0 Dropout Voltage (VIN-VOUT) CONDITIONS TJ=25oC,(VIN-OUT)=1.5V IO=10mA IOUT = 10mA, TJ = 25oC, 3V≦VIN≦12V o IOUT = 10mA, TJ = 25 C, 3.3V≦VIN≦12V IOUT = 10mA, TJ = 25oC, 3.3V≦VIN≦12V IOUT = 10mA, TJ = 25oC, 4V≦VIN≦12V IOUT = 10mA, TJ = 25oC, 4.8V≦VIN≦12V IOUT = 10mA, TJ = 25oC, 6.5V≦VIN≦12V IO=10mA,VOUT+1.5V