AP1122 1A Low Dropout Positive Regulator Features General Description - 1.3V maximum dropout at full load current - Fixed 1.2V+ 2% output voltage - Fast transient response - Output current limiting - Built-in thermal shutdown - Good noise rejection - Pb-Free Packages: SOT223, TO263, TO252, TO220, SOT89 AP1122 is a low dropout positive 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 1.2V logic supply. AP1122 is also well suited for other applications such as VGA cards. AP1122 is guaranteed to have lower than 1.3V dropout at full load current making it ideal to provide well-regulated outputs of 1.2 output voltage with 2.5V input voltage supply. Applications - PC peripheral - Communication Ordering Information AP 1122 X X Package Packing E : SOT223-3L K : TO263-3L D : TO252-3L T : TO220-3L Y : SOT89-3L Blank : Tube A : Taping Low Dropout Regulator Typical Circuit 2.5V C1 100uF Vin Vout 1.2V/1A C2 100uF GND Tab is Vout 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 Oct 21, 2004 1/10 AP1122 1A Low Dropout Positive Regulator Connection Diagram 3 PIN SOT223 3 PIN TO252 / TO263 ( Top View ) ( Top View ) 3 Vin 2 Vout 1 GND Vin 3 2 Vout 1 Tab is Vout GND Tab is Vout 3 PIN SOT89 3 PIN TO220 3 Vin 3 Vin 2 Vout 2 Vout 1 GND 1 GND Tab is Vout Tab is Vout Block Diagram Vin 3 2 Vout 1 GND + + - 1.2V + CURRENT LIMIT + - Thermal Shutdown Anachip Corp. www.anachip.com.tw Rev.1.0 Oct 21, 2004 2/10 AP1122 1A Low Dropout Positive Regulator Pin Descriptions NAME GND I/O I PIN # 1 Vout O 2 Vin I 3 FUNCTION Ground Pin 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. Absolute Maximum Ratings Symbol Vin PD TST TOP Parameter DC Supply Voltage Power Dissipation Storage Temperature Operating Junction Temperature Range Rating Unit -0.3 to 12 V Internally Limited o -65 to +150 C o 0 to +150 C Electrical Characteristics (Under Operating Conditions) PARAMETER Output Voltage Line Regulation Load Regulation Dropout Voltage (VIN-VOUT) Current Limit Minimum Load Current Thermal Regulation CONDITIONS 2.5V≦VIN≦12V, TJ=25oC o IO=10mA, 2.5V<VIN<12V, TJ=25 C VIN=2.5V~12V,Vadj=0,0mA<Io<1A, TJ=25oC (Note 1,2) MIN 1.176 1.3 IOUT = 1A ,∆VOUT=0.1%VOUT (VIN-VOUT) = 5V o TYP 1.2 MAX 1.224 0.2 UNIT V % 1 % 1.4 V 1. 1 o 0 C≦Tj≦125 C o TA=25 C, 30ms pulse F=120Hz,COUT=25uF Tantalum, IOUT=1A, Ripple Rejection VIN=VOUT+3V Temperature Stability IO=10mA θ JA Thermal SOT89 Resistance Junction- SOT-223 TO-252 to-Ambient (No heat TO-220/263 sink ;No air flow) SOT89 : Control Circuitry/Power Transistor θ JC Thermal SOT-223 : Control Circuitry/Power Transistor TO-263 : Control Circuitry/Power Transistor Resistance TO-252 : Control Circuitry/Power Transistor Junction-to-Case TO-220 : Control Circuitry/Power Transistor A 5 10 mA 0.008 0.04 %/W 60 70 dB 0.5 300 117 92 85 100 15 0.65/2.7 10 0.65/2.7 % o C/W o C/W Note1: See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured at a constant junction temperature by low duty cycle pulse testing. Load regulation is measured at the output lead = 1/18” from the package. Note2: Line and load regulation are guaranteed up to the maximum power dissipation of 15W. Power dissipation is determined by the difference between input and output differential and the output current. Guaranteed maximum power dissipation will not be available over the full input/output range. Note3: Quiescent current is defined as the minimum output current required in maintaining regulation. At 12V input/output differential the device is guaranteed to regulate if the output current is greater than 10mA. Anachip Corp. www.anachip.com.tw Rev.1.0 Oct 21, 2004 3/10 AP1122 1A Low Dropout Positive Regulator Typical Performance Characteristics 0.20 2. 0 Output Voltage Deviation (%) 1. 8 1. 6 Dropout Voltage (V) 1. 4 1. 2 0 I load=800mA -0.20 Tj = 25 oC 1. 0 -0.40 0. 8 Tj = 125 oC 0. 6 -0.80 0. 4 0. 2 0 0 250 500 Output Current (mA) 750 -1 1000 -25 Dropout Voltage vs Output Current 0 25 50 Temperature (oC) 75 100 125 Load Regulation vs Temperature 2 1 0.8 1 0. 5 0 -0.5 -1 -1.5 -2 -50 -25 0 25 50 Temperature (oC) 75 100 125 150 Output Voltage Deviation (%) Output Voltage Change (%) 1.5 0.6 0.4 0.2 0 2 4 7.5 Cin=1uF Cout=10uF Tantalum 6.5 5.5 40 20 0 -20 -40 0 20 40 60 80 100 120 140 160 180 200 TIME (us) 6 8 10 Input Voltage (V) 12 Line Regulation Load Current (A) Output Voltage Deviation (mV) Output Voltage Deviation (mV) Input Voltage (V) Percent Change in Output Voltage vs Temperature Line Transient Response 30 C in = 1uF C out = 10 uF Tantalum Preload = 100mA 20 10 0 -10 -20 2 1 0 -1 0 10 20 30 40 50 TIME (us) 60 70 80 90 100 Load Transient Response Anachip Corp. www.anachip.com.tw Rev.1.0 Oct 21, 2004 4/10 AP1122 1A Low Dropout Positive Regulator Marking Information (2) TO252-3L (1) SOT223-3L (Top view) (Top view) Logo Logo XXX 1122 1122 XXXX X ID Code Month: A~L = 01~12 Year: "1" = 2001 "2" = 2002 ~ ID Code Xth Week: 01~52 Year: "01" = 2001 "02" = 2002 ~ (4) SOT89-3L (3) TO220-3L ( Top view ) Identification Code ( See the table ) XX XX Date Code Month: A~L Year: 0~9 1 2 3 Logo 1122 XX XX X ID code Xth week: 01~52 Year: "01" = 2001 "02" = 2002 Identification code Output version JB AP1122 ~ (5) TO263-3L ( Top view ) Logo 1122 XX XX X ID code Xth week: 01~52 Year: "01" = 2001 "02" = 2002 ~ Anachip Corp. www.anachip.com.tw Rev.1.0 Oct 21, 2004 5/10 AP1122 1A Low Dropout Positive Regulator Package Dimension (1) SOT223 D B1 E 1.6 H 6.4 1.6 3.7 K Land Pattern Recommendation (Unit: mm) B Symbol α ß c A1 A e1 ß 2.3 1.2 e L Seating Plane Dimensions In Millimeters Dimensions In Inches Min. Nom. Max. Min. Nom. Max. A 1.50 1.65 1.80 0.059 0.065 0.071 A1 0.02 0.05 0.08 0.001 0.002 0.003 B 0.60 0.70 0.80 0.024 0.028 0.031 B1 2.80 - 3.40 0.110 - 0.134 c 0.28 0.30 0.32 0.011 0.012 0.013 D 6.30 6.50 6.70 0.248 0.256 0.264 E 3.30 3.50 3.70 0.130 0.138 0.146 e 2.3 Basic 0.091 Basic e1 4.6 Basic 0.181 Basic H 6.70 7.00 7.30 0.264 0.276 0.287 L 0.91 1.00 1.10 0.036 0.039 0.043 K α 1.50 1.75 2.00 0.059 0.069 0.079 0° 5o 10° 0° 5o 10° β - o 13 - Anachip Corp. www.anachip.com.tw - o 13 - Rev.1.0 Oct 21, 2004 6/10 AP1122 1A Low Dropout Positive Regulator (2) TO263 10.9 L3 3 L 15.7 D 9.1 L2 E 1.3 b b2 2.54 Land Pattern Recommendation (Unit: mm) C2 A C e L1 Symbol A b b2 C C2 D E e L L1 L2 L3 Dimensions In Millimeters Min. Nom. Max. 4.06 4.45 4.83 0.51 0.75 0.99 1.14 1.27 1.40 0.38 TYP. 1.14 1.27 1.40 8.65 9.15 9.65 9.65 9.97 10.29 2.54 BSC. 14.61 15.24 15.88 2.28 2.54 2.80 1.30 2.92 1.27 1.52 1.78 Anachip Corp. www.anachip.com.tw Dimensions In Inches Min. Nom. Max. 0.160 0.175 0.190 0.020 0.030 0.039 0.045 0.050 0.055 0.015 TYP. 0.045 0.050 0.055 0.341 0.380 0.575 0.360 0.393 0.100 BSC. 0.600 0.380 0.405 0.625 0.090 0.050 0.100 0.051 0.060 0.110 0.115 0.070 Rev.1.0 Oct 21, 2004 7/10 AP1122 1A Low Dropout Positive Regulator (3) TO252 5.6 L2 E 7.2 D 11.0 5.6 b2 2.0 2.25 L1 1.2 Land Pattern Recommendation (Unit: mm) e e1 Notes: 1. 2. Symbol A A1 b b2 C C1 D E e e1 H L L1 L2 SEATING PLANE A L SEE NOTE2 A1 C H C1 b JEDEC Outline: TO-252 AB Mils suggested for positive contact at mounting. Dimensions In Millimeters Min. Nom. Max. 2.18 2.29 2.39 1.02 1.15 1.27 0.61 TYP. 5.20 5.35 5.50 0.46 0.52 0.58 0.46 0.52 0.58 5.33 5.57 5.80 6.35 6.58 6.80 2.25 BSC. 4.50 BSC. 9.00 9.70 10.40 0.51 0.64 0.83 1.02 1.52 1.78 2.03 Anachip Corp. www.anachip.com.tw Dimensions In Inches Min. Nom. Max. 0.086 0.090 0.094 0.040 0.045 0.050 0.024 TYP. 0.205 0.211 0.217 0.018 0.020 0.023 0.018 0.020 0.023 0.210 0.219 0.228 0.250 0.259 0.268 0.089 BSC. 0.177 BSC. 0.354 0.382 0.409 0.020 0.025 0.033 0.040 0.060 0.070 0.080 Rev.1.0 Oct 21, 2004 8/10 AP1122 1A Low Dropout Positive Regulator (4) TO220 E A F SEATING PLANE Q ΦP L1 D H1 L b1 C b J1 e e1 Symbol A b1 b C D E e e1 F H1 J1 L L1 øP Q Dimensions In Millimeters Min. Nom. Max. 3.55 4.20 4.85 1.14 1.46 1.78 0.51 0.83 1.14 0.31 0.72 1.14 14.20 15.35 16.50 9.70 10.20 10.70 2.29 2.54 2.79 4.83 5.08 5.33 0.51 0.95 1.40 5.84 6.35 6.86 2.03 2.48 2.92 12.72 13.72 14.72 3.66 5.00 6.35 3.53 3.81 4.09 2.54 2.98 3.43 Anachip Corp. www.anachip.com.tw Dimensions In Inches Min. Nom. Max. 0.140 0.165 0.191 0.045 0.057 0.070 0.020 0.033 0.045 0.012 0.028 0.045 0.559 0.604 0.650 0.382 0.402 0.421 0.090 0.100 0.110 0.190 0.200 0.210 0.020 0.037 0.055 0.230 0.250 0.270 0.080 0.098 0.115 0.501 0.540 0.580 0.144 0.197 0.250 0.139 0.150 0.161 0.100 0.117 0.135 Rev.1.0 Oct 21, 2004 9/10 AP1122 1A Low Dropout Positive Regulator (5) SOT89 1.7 HE E 2.7 D1 1.3 L 1.9 0.4 1.5 0.9 Land Pattern Recommendation (Unit: mm) e1 e 50(2x) 80(2x) A D c b Symbol A b b1 C D D1 e e1 E HE L b1 b Dimensions In Millimeters Min. 1.40 0.36 0.41 0.35 4.40 1.40 2.90 1.45 2.35 3.94 0.80 Nom. 1.50 0.42 0.47 0.39 4.50 1.60 3.00 1.50 2.48 - Max. 1.60 0.48 0.53 0.43 4.60 1.75 3.10 1.55 2.60 4.25 1.20 Anachip Corp. www.anachip.com.tw Dimensions In Inches Min. 0.055 0.014 0.016 0.014 0.173 0.055 0.114 0.057 0.093 0.155 0.031 Nom. 0.059 0.016 0.043 0.015 0.177 0.062 0.118 0.059 0.098 - Max. 0.063 0.018 0.051 0.017 0.181 0.069 0.122 0.061 0.102 0.167 0.047 Rev.1.0 Oct 21, 2004 10/10