AP1115 0.6A Low Dropout Positive Adjustable or Fixed-Mode Regulator General Description Features * * * * * * * AP1115 is a low dropout positive adjustable or fixed-mode regulator with minimum of 0.6A 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. AP1115 is also well suited for other applications such as VGA cards. AP1115 is guaranteed to have <1.3V dropout at full load current making it ideal to provide well regulated outputs of 1.25V to 5V with up to 18V input supply. 1.3V maximum dropout at full load current Fast transient response Output current limiting Built-in thermal shutdown Packages: SOT89, TO92 Good noise rejection 3-Terminal Adjustable or Fixed 1.5V / 1.8V / 2.5V / 2.8V / 3.0V /3.3V / 5.0V Applications * * PC peripheral Communication Connection Diagram (Top View) AP1115A-3 PIN SOT89 AP1115A-3 PIN TO92 3 Vin 2 Adj (GND) 2 GND 1 Vout 1 Vin 3 Vout Tab is Pin2 AP1115B-3 PIN SOT89 AP1115B-3 PIN TO92 3 Vout 2 Vin 2 Vin 1 Adj (GND) 1 GND 3 Vout Tab is Pin2 Pin Descriptions NAME Adj (GND) I/O Vout O Vin I I FUNCTION 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 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 1.3V higher than Vout in order for the device to regulate properly. 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 May.19, 2004 1/7 AP1115 0.6A Low Dropout Positive Adjustable or Fixed-Mode Regulator Ordering Information AP 1115 X X XX X X Low Dropout Regulator Pin Version Package Lead Free Packing Blank : Tube A: Pin1:Vout Y : SOT89-3L Blank : ADJ Blank : Normal 2:Adj(GND) V : TO92-3L 15 : 1.5V L : Lead Free Package A : Taping 3:Vin B: Pin1:Adj(GND) 2:Vin 3:Vout Vout 18 : 1.8V 25 : 2.5V 28 : 2.8V 30 : 3.0V 33 : 3.3V 50 : 5.0V Typical Circuit 5V 5V C1 100uF C1 100uF Vin Vin GND Adj Vout Vout 3.3V/0.5A R1 121O C2 100uF AP1115A (5V/2.5V Adj output) 5V C1 100uF 5V C1 100uF Vin 2.5V/0.5A C2 100uF AP1115A (5V/3.3V fixed output) Vout VO R2 121O VO 2.5V/0.5A Vout 3.3V/0.5A C2 100uF Vin Adj GND C2 R1 121O 100uF R2 121O AP1115B (5V/2.5V Adj output) AP1115B (5V/3.3V fixed output) Note: Vo = VREF (1+ Anachip Corp. www.anachip.com.tw R2 ) R1 Rev.1.0 May.19, 2004 2/7 AP1115 0.6A Low Dropout Positive Adjustable or Fixed-Mode Regulator Absolute Maximum Ratings Symbol VIN PD TST TOP Parameter DC Supply Voltage Power Dissipation Storage Temperature Operating Junction Temperature Range Rating -0.3 to 18 V Internally Limited -65 to +150 0 to +150 Unit V o o C C Electrical Characteristics (Under Operating Conditions) PARAMETER Reference Voltage AP1115-ADJ AP1115-1.5 AP1115-1.8 AP1115-2.5 Output Voltage AP1115-2.8 AP1115-3.0 AP1115-3.3 AP1115-5.0 Line Regulation AP1115-XXX AP1115-ADJ AP1115-1.5 AP1115-1.8 AP1115-2.5 Load Regulation AP1115-2.8 AP1115-3.0 AP1115-3.3 AP1115-5.0 Dropout Voltage (VIN-VOUT) Current Limit Minimum Load Current Thermal Regulation CONDITIONS o TJ=25 C,(VIN-OUT)=1.5V IO=10mA IOUT = 10mA, TJ = 25oC, 3VVIN12V IOUT = 10mA, TJ = 25oC, 3.3VVIN12V o IOUT = 10mA, TJ = 25 C, 4VVIN12V o IOUT = 10mA, TJ = 25 C, 4.3VVIN12V o IOUT = 10mA, TJ = 25 C, 4.5VVIN12V o IOUT = 10mA, TJ = 25 C, 4.8VVIN12V IOUT = 10mA, TJ = 25oC, 6.5VVIN12V IO=10mA,VOUT+1.5V