AME, Inc. 1.5A Low Dropout Positive Voltage Regulator AME1086 n General Description n Key Features l The AME1086 is a 1.5A low-dropout positive voltage regulator. It is available in fixed and adjustable output voltage versions. Overcurrent and thermal protection are integrated onto the chip. Output current will limit as it reaches the pre-set current or temperature limit. At full rated output current the dropout voltage is 1.4V (max.). AME1086 series regulators provide excellent regulation over line, load and temperature variations. l l l l l l l Low dropout voltage 1.2V typically at 1.5A Adjustable or 3.3V fixed voltage Line regulation typically 0.015% Load regulation typically 0.05% Adjust pin (ADJ) current less than 90µA Overcurrent protection Thermal protection Available in TO-220, TO-263, TO-252 n Applications l l l l High Efficiency Linear Regulators Post Regulators for Switching Supplies 5V to 3.3V Voltage Converter Battery Charger n Functional Block Diagram n Typical Application Input AME1086 V IN VOUT GND Current Limiting Amplifier 4.75V to 5.25V Thermal Protection Error Amp. 10µF Tan 10µF Tan Load Output Bandgap Reference ADJ/GND Figure 2 Figure 1 1 AME, Inc. 1.5A Low Dropout Positive Voltage Regulator AME1086 n Pin Configuration To-263 Front View To-263-2 Front View AME 1086 AME 1086 1 1 2 ADJ/GND VOUT 3 V IN To-252-2 Front View AME 1086 1 2 3 2 3 ADJ/GND VOUT V IN TO-252-2 Front view AME1086 1 2 3 VOUT ADJ/GND VOUT V IN To-220 Front View AME1086 ADJ/GND 2 V O U T V IN ADJ/ GND V IN AME, Inc. 1.5A Low Dropout Positive Voltage Regulator AME1086 n Ordering Information Part Number Marking Output Voltage Package AME1086ACBT AME1086 ACBT YYWW ADJ TO-220 AME1086DCBT AME1086 DCBT YYWW 3.3 TO-220 ADJ TO-263-3 3.3 TO-263-3 ADJ TO-263-2 3.3 TO-263-2 ADJ TO-252-2 3.3 TO-252-2 AME1086ACDT AME1086DCDT AME1086ACDS AME1086DCDS AME1086ACCS AME1086DCCS AME1086 ACDT YYWW AME1086 DCDT YYWW AME1086 ACDS YYWW AME1086 DCDS YYWW AME1086 ACCS YYWW AME1086 DCCS YYWW * This differs from our standard part numbering scheme due to historical precedent n Absolute Maximum Ratings Symbol Maximum Parameter VIN Input Voltage Thermal Resistance (Junction to Case) Thermal Resistance (Junction to Ambient) TO-220 TO-263 TO-252 θJC TO-220 TO-263 θJA 2.5 2.5 15 50 V 0 C/W 60 90 TO-252 Operating Junction Temperature Range Units 7 TJ 0 to 125 Storage Temperature Range TSTG -65 to 150 Lead Temperature ( 10 sec ) TLEAD 260 0 C 3 AME, Inc. 1.5A Low Dropout Positive Voltage Regulator AME1086 n Electrical Characteristics AME1086AXXX Parameter Reference voltage (adjustable voltage) VREF Line regulation RegLINE Load regulation RegLOAD Dropout voltage ∆ VOUT, ∆ VREF = 1% Current limit Test Conditions Symbol VD Min. 1.238 Typ. Max. 1.262 VIN = 5V TJ =250C IO = 10mA Over temp. 1.225 VIN = 2.75 - 7V TJ =250C - 0.015 0.2 IO = 10mA Over temp. - 0.035 0.2 VIN = 5V TJ =250C - 0.05 0.3 IO = 10mA - 1.5A Over temp. - 0.2 0.4 VIN = 2.75 - 7V TJ =250C - 1.2 1.4 IO = 10mA - 1.5A Over temp. - 1.3 - 1.5 - - 1.250 1.275 Units V % % V IS VIN = 2.75 - 7V, Over temp. Temperature Coefficient TC VIN = 2.75 - 7V, IO = 10mA - 1.5A - 0.005 - A %/OC Temperature stability TS VIN = 5V, IO = 500mA, Over temp. - 0.5 - % Minimum load current IO VIN = 5V - 5 10 mA - 0.003 - %V0 60 72 - dB Min. 3.267 Typ. Max. 3.333 Units 0 RMS output noise VN TJ =25 C Ripple rejection ratio RA VIN = 5V, IO = 1.5A, Over temp. AME1086DXXX Parameter Output voltage (fixed voltage) RegLINE Load regulation RegLOAD ∆ VOUT, ∆ VREF = 1% 4 Vo Line regulation Dropout voltage Current limit Quiescent current (fixed model) Temperature Coefficient Temperature stability Test Conditions Symbol VD 0 VIN = 5V TJ =25 C IO = 0A Over temp. 3.234 VIN =4.5 - 7V TJ =250C - 0.015 0.2 IO = 0A Over temp. - 0.035 0.2 VIN = 5V TJ =250C - 0.05 0.3 IO = 0A - 1.5A Over temp. - 0.2 0.4 VIN = 4.5 - 7V TJ =250C - 1.2 1.4 IO = 0A - 1.5A Over temp. - 1.3 - 1.5 - - A 3.300 3.366 V % % V IS VIN = 4.5 - 7V, Over temp. IQ VIN = 5V, Io=0A - 1.5A, Over temp. - 12 13 mA TC VIN = 4.5 - 7V, IO = 0A - 1.5A - 0.005 - %/0C TS VIN = 5V, IO = 500mA, Over temp. - 0.5 - % - 0.003 - %V0 60 72 - dB 0 RMS output noise VN TJ =25 C Ripple rejection ratio RA VIN = 5V, IO = 1.5A, Over temp. AME, Inc. 1.5A Low Dropout Positive Voltage Regulator AME1086 n Application Description 3. Current limit protection AME1086 is protected against overload conditions. Current protection is triggered at typically 3.0A. 1. Output voltage adjustment Like most regulators, the AME1086 regulates the output by comparing the output voltage to an internally generated reference voltage. On the adjustable version, the VREF is available externally as 1.25V between VOUT and ADJ. The voltage ratio formed by R1 and R2 should be set to conduct 10mA (minimum output load). The output voltage is given by the following equation: R2 ) + IADJ x R2 VOUT = VREF ( 1 + R1 On fixed versions of AME1086, the voltage divider is provided internally. V IN IN ADJ Note: It is important that the ESR for this capacitor does not exceed 0.5Ω. The output capacitor dose not have a theoretical upper limit and increasing its value will increase stability. COUT = 100µF or more is typical for high current regulator design. V OUT OUT C1 4. Stability and load regulation AME1086 requires a capacitor from VOUT to GND to provide compensation feedback to the internal gain stage. This is to ensure stability at the output terminal. Typically, a 10µF tantalum or 50µF aluminum electrolytic is sufficient. V REF R1 I A DJ 50µA R2 For the adjustable version, the best load regulation is accomplished when the top of the resistor divider (R1) is connected directly to the output pin of the AME1086. When so connected, RP is not multiplied by the divider ratio. For fixed output versions, the top of R1 is internally connected to the output and ground pin can be connected to low side of the load. V O U T = V R E F (1+ R 2 ) + I ADJ x R2 R1 Figure 3 RP Parasitic Line Resistance V IN IN OUT ADJ 2. Thermal protection AME1086 has thermal protection which limits junction temperature to 150OC. However, device functionality is only guaranteed to a maximum junction temperature of +125OC. R1 (Connect R1 to case) RL R2 The power dissipation and junction temperature for AME1086 in TO-220 package are given by PD = (VIN - VOUT) x IOUT TJUNCTION = TAMBIENT + ( PD x θJA) Connect R2 to load Note: TJUNCTION must not exceed 125OC Figure 4 5 AME, Inc. AME1086 5. Thermal consideration The AME1086 series contain thermal limiting circuitry designed to protect itself for over-temperature conditions. Even for normal load conditions, maximum junction temperature ratings must not be exceed. As mention in thermal protection section, we need to considerall sources of thermal resistance between junction and ambient. It includes junction-to-case, case-to-heat-sink interface and heat sink thermal resistance itself. Junction-to-case thermal resistance is specified from the IC junction to the bottom of the case directly below the die. Proper mounting is required to ensure the best possible thermal flow from this area of the package to the heat sink. The case of all devices in this series is electrically connected to the output. Therefore, if the case of the device must be electrically isolated, a thermally conductive spacer is recommended. 6 1.5A Low Dropout Positive Voltage Regulator AME, Inc. 1.5A Low Dropout Positive Voltage Regulator AME1086 n Advanced Applications AME1086 V IN = 5V * V O = 1.5 - 3.45V V OUT V IN ADJ R1 10µF 10µF 10µF 1K ** R2 2K R2 ) + IADJ x R2 R1 ** Optional for improved ripple rejection * VO = VREF ( 1 + Figure 5 Adjustable output voltage V IN V IN AME1086 V OUT GND R1 * 2 0 mΩ 1 0µF VO I O = 0 to 3A 1 0µF V IN AME1086 V OUT GND R2 * 2 0 mΩ * 20mΩ is ballast resistance The inter - connection of #18 wire could act as ballast resistance Figure 6 Paralleling Regulators 7 AME, Inc. 1.5A Low Dropout Positive Voltage Regulator AME1086 n Advanced Applications (Cont.) V IN V IN AME1086 V OUT GND 10µF 10µF 1K 10µF ** * VO = VREF + VZ (VZ: breakdown voltage of Zener diode) ** Optional for improved ripple rejection Figure 7 Regulator with reference * V IN AME1086 V OUT VO GND 10 µF 100 µF Figure 8 Regulator with reverse diode protection 8 AME, Inc. 1.5A Low Dropout Positive Voltage Regulator AME1086 n External Rsistor Divider Table for Customized Voltage R1(ohm) Vout 1.25 1.30 1.35 1.40 1.45 1.50 1.55 1.60 1.65 1.70 1.75 1.80 1.85 1.90 1.95 2.00 2.05 2.10 2.15 2.20 2.25 2.30 2.35 2.40 2.45 2.50 2.55 2.60 2.65 2.70 2.75 2.80 2.85 2.90 2.95 3.00 3.05 3.10 100 102 105 0.000 3.984 7.968 11.95 15.94 19.92 23.90 27.89 31.87 35.86 39.84 43.82 47.81 51.79 55.78 59.76 63.75 67.73 71.71 75.70 79.68 83.67 87.65 91.63 95.62 99.60 103.6 107.6 111.6 115.5 119.5 123.5 127.5 131.5 135.5 139.4 143.4 147.4 0.000 4.063 8.127 12.19 16.25 20.32 24.38 28.44 32.51 36.57 40.63 44.70 48.76 52.82 56.89 60.95 65.01 69.08 73.14 77.21 81.27 85.33 89.40 93.46 97.52 101.6 105.6 109.7 113.8 117.8 121.9 126.0 130.0 134.1 138.2 142.2 146.3 150.3 0.000 4.182 8.365 12.55 16.73 20.91 25.09 29.28 33.46 37.64 41.82 46.01 50.19 54.37 58.55 62.74 66.92 71.10 75.28 79.47 83.65 87.83 92.01 96.20 100.4 104.6 108.7 112.9 117.1 121.3 125.5 129.7 133.8 138.0 142.2 146.4 150.6 154.8 107 110 113 115 R2(ohm)=(Vout-1.25)*R1/(1.25+50u*R1) 0.000 0.000 0.000 0.000 4.262 4.381 4.500 4.579 8.524 8.761 8.999 9.158 12.79 13.14 13.50 13.74 17.05 17.52 18.00 18.32 21.31 21.90 22.50 22.89 25.57 26.28 27.00 27.47 29.83 30.67 31.50 32.05 34.09 35.05 36.00 36.63 38.36 39.43 40.50 41.21 42.62 43.81 45.00 45.79 46.88 48.19 49.50 50.37 51.14 52.57 54.00 54.95 55.40 56.95 58.50 59.53 59.66 61.33 63.00 64.11 63.93 65.71 67.49 68.68 68.19 70.09 71.99 73.26 72.45 74.47 76.49 77.84 76.71 78.85 80.99 82.42 80.97 83.23 85.49 87.00 85.24 87.61 89.99 91.58 89.50 92.00 94.49 96.16 93.76 96.38 98.99 100.7 98.02 100.8 103.5 105.3 102.3 105.1 108.0 109.9 106.5 109.5 112.5 114.5 110.8 113.9 117.0 119.1 115.1 118.3 121.5 123.6 119.3 122.7 126.0 128.2 123.6 127.0 130.5 132.8 127.9 131.4 135.0 137.4 132.1 135.8 139.5 141.9 136.4 140.2 144.0 146.5 140.6 144.6 148.5 151.1 144.9 148.9 153.0 155.7 149.2 153.3 157.5 160.3 153.4 157.7 162.0 164.8 157.7 162.1 166.5 169.4 118 121 124 0.000 4.698 9.396 14.09 18.79 23.49 28.19 32.88 37.58 42.28 46.98 51.68 56.37 61.07 65.77 70.47 75.17 79.86 84.56 89.26 93.96 98.65 103.4 108.1 112.7 117.4 122.1 126.8 131.5 136.2 140.9 145.6 150.3 155.0 159.7 164.4 169.1 173.8 0.000 4.817 9.633 14.45 19.27 24.08 28.90 33.72 38.53 43.35 48.17 52.98 57.80 62.62 67.43 72.25 77.07 81.88 86.70 91.52 96.33 101.2 106.0 110.8 115.6 120.4 125.2 130.1 134.9 139.7 144.5 149.3 154.1 159.0 163.8 168.6 173.4 178.2 0.000 4.936 9.871 14.81 19.74 24.68 29.61 34.55 39.48 44.42 49.36 54.29 59.23 64.16 69.10 74.03 78.97 83.90 88.84 93.77 98.71 103.6 108.6 113.5 118.5 123.4 128.3 133.3 138.2 143.1 148.1 153.0 157.9 162.9 167.8 172.7 177.7 182.6 9 AME, Inc. 1.5A Low Dropout Positive Voltage Regulator AME1086 External Rsistor Divider Table for Customized Voltage (Cont.) R1(ohm) Vout 3.15 3.20 3.25 3.30 3.35 3.40 3.45 3.50 3.55 3.60 3.65 3.70 3.75 3.80 3.85 3.90 3.95 4.00 4.05 4.10 4.15 4.20 4.25 4.30 4.35 4.40 4.45 4.50 4.55 4.60 4.65 4.70 4.75 4.80 4.85 4.90 4.95 5.00 10 100 102 105 151.4 155.4 159.4 163.3 167.3 171.3 175.3 179.3 183.3 187.3 191.2 195.2 199.2 203.2 207.2 211.2 215.1 219.1 223.1 227.1 231.1 235.1 239.0 243.0 247.0 251.0 255.0 259.0 262.9 266.9 270.9 274.9 278.9 282.9 286.9 290.8 294.8 298.8 154.4 158.5 162.5 166.6 170.7 174.7 178.8 182.9 186.9 191.0 195.0 199.1 203.2 207.2 211.3 215.4 219.4 223.5 227.6 231.6 235.7 239.7 243.8 247.9 251.9 256.0 260.1 264.1 268.2 272.2 276.3 280.4 284.4 288.5 292.6 296.6 300.7 304.8 158.9 163.1 167.3 171.5 175.7 179.8 184.0 188.2 192.4 196.6 200.8 204.9 209.1 213.3 217.5 221.7 225.9 230.0 234.2 238.4 242.6 246.8 250.9 255.1 259.3 263.5 267.7 271.9 276.0 280.2 284.4 288.6 292.8 297.0 301.1 305.3 309.5 313.7 107 110 113 115 R2(ohm)=(Vout-1.25)*R1/(1.25+50u*R1) 161.9 166.5 171.0 174.0 166.2 170.8 175.5 178.6 170.5 175.2 180.0 183.2 174.7 179.6 184.5 187.7 179.0 184.0 189.0 192.3 183.3 188.4 193.5 196.9 187.5 192.8 198.0 201.5 191.8 197.1 202.5 206.1 196.0 201.5 207.0 210.6 200.3 205.9 211.5 215.2 204.6 210.3 216.0 219.8 208.8 214.7 220.5 224.4 213.1 219.0 225.0 228.9 217.3 223.4 229.5 233.5 221.6 227.8 234.0 238.1 225.9 232.2 238.5 242.7 230.1 236.6 243.0 247.3 234.4 240.9 247.5 251.8 238.7 245.3 252.0 256.4 242.9 249.7 256.5 261.0 247.2 254.1 261.0 265.6 251.4 258.5 265.5 270.2 255.7 262.8 270.0 274.7 260.0 267.2 274.5 279.3 264.2 271.6 279.0 283.9 268.5 276.0 283.5 288.5 272.8 280.4 288.0 293.1 277.0 284.7 292.5 297.6 281.3 289.1 297.0 302.2 285.5 293.5 301.5 306.8 289.8 297.9 306.0 311.4 294.1 302.3 310.5 315.9 298.3 306.7 315.0 320.5 302.6 311.0 319.5 325.1 306.8 315.4 324.0 329.7 311.1 319.8 328.5 334.3 315.4 324.2 333.0 338.8 319.6 328.6 337.5 343.4 118 121 124 178.5 183.2 187.9 192.6 197.3 202.0 206.7 211.4 216.1 220.8 225.5 230.2 234.9 239.6 244.3 249.0 253.7 258.4 263.1 267.8 272.5 277.2 281.9 286.6 291.3 296.0 300.7 305.4 310.1 314.8 319.5 324.2 328.8 333.5 338.2 342.9 347.6 352.3 183.0 187.9 192.7 197.5 202.3 207.1 211.9 216.8 221.6 226.4 231.2 236.0 240.8 245.7 250.5 255.3 260.1 264.9 269.7 274.6 279.4 284.2 289.0 293.8 298.6 303.5 308.3 313.1 317.9 322.7 327.5 332.4 337.2 342.0 346.8 351.6 356.4 361.3 187.5 192.5 197.4 202.4 207.3 212.2 217.2 222.1 227.0 232.0 236.9 241.8 246.8 251.7 256.6 261.6 266.5 271.5 276.4 281.3 286.3 291.2 296.1 301.1 306.0 310.9 315.9 320.8 325.7 330.7 335.6 340.6 345.5 350.4 355.4 360.3 365.2 370.2 AME, Inc. 1.5A Low Dropout Positive Voltage Regulator AME1086 n Package Dimension TO-252 (DPAK) -EIAJ SYMBOLS A B C D E F G H I J K L MILLIMETERS MIN MAX 0.45 0.58 1.60 1.95 0.51 0.45 0.60 6.40 6.80 5.40 5.80 2.20 2.85 * 2.30 0.90 0.97 5.20 5.50 0.89 2.03 INCHES MIN MAX 0.0177 0.023 0.06 0.0768 0.02 0.0177 0.0236 0.252 0.2677 0.2126 0.2283 0.0866 0.1122 * 0.0906 0.0354 0.038 0.20 0.22 0.035 0.08 * : Typical value NOTES : 1. CONTROLLING DIMENSION : MILLIMETERS. 2. MAXIMUM LEAD THICKNESS INCLUDES LEAD FINISH THICKNESS MINIMUM LEAD THICKNESS IS THE MINIMUM THICKNESS OF BASE MATERIAL. TO-252 (DPAK) JDEC SYMBOLS A B C D E F G H I J K L MILLIMETERS MIN MAX 0.45 0.58 1.60 1.95 0.51 0.45 0.60 6.40 6.80 5.40 5.80 2.20 2.85 * 2.30 0.90 0.97 5.20 5.50 0.89 2.03 INCHES MIN MAX 0.0177 0.023 0.06 0.0768 0.02 0.0177 0.0236 0.252 0.2677 0.2126 0.2283 0.0866 0.1122 * 0.0906 0.0354 0.038 0.20 0.22 0.035 0.08 * : Typical value NOTES : 1. CONTROLLING DIMENSION : MILLIMETERS. 2. MAXIMUM LEAD THICKNESS INCLUDES LEAD FINISH THICKNESS MINIMUM LEAD THICKNESS IS THE MINIMUM THICKNESS OF BASE MATERIAL. 11 AME, Inc. 1.5A Low Dropout Positive Voltage Regulator AME1086 n Package Dimension TO-220 SYMBOLS A b C1 D E e e1 e3 f H1 K CP Q L a b1 R MILLIMETERS MIN MAX 4.06 4.83 0.63 1.02 0.35 0.60 14.22 14.99 9.66 10.54 2.79 4.83 5.33 1.14 1.40 1.14 1.40 5.94 6.55 2.29 2.92 3.71 3.96 2.62 2.87 12.70 14.27 3D 7D 1.14 1.52 6.17 REF. INCHES MIN MAX 0.160 0.190 0.025 0.040 0.0138 0.0236 0.056 0.590 0.385 0.415 0.110 0.190 0.210 0.045 0.055 0.045 0.055 0.234 0.258 0.090 0.115 0.146 0.156 0.103 0.113 0.500 0.5618 3D 7D 0.0449 0.06 0.243 REF. Notes : 1. Dimension C1 apply for tin plate finish. 2. For solder dip lead finish dimension C1 should be 0.015"-0.027" (0.38-0.69) TO-263-3 (D2PAK) SYMBOLS A B C D E G H K L M N P R S W * MILLIMETERS MIN MAX 9.65 10.41 8.28 9.65 4.06 4.83 0.51 1.02 1.14 1.40 * 2.54 14.61 15.88 1.02 1.68 0.00 0.97 2.49 2.74 0.43 0.58 2.29 2.79 o 8? 0 2.41 2.67 0.254 0.508 INCHES MIN MAX 0.380 0.410 0.326 0.380 0.160 0.190 0.020 0.040 0.045 0.055 * 0.100 0.575 0.625 0.040 0.066 0.000 0.038 0.098 0.108 0.017 0.023 0.090 0.110 o 0 8? 0.095 0.105 0.010 0.020 : Typical value NOTES : 1. CONTROLLING DIMENSION : MILLIMETERS. 2MAXIMUM LEAD THICKNESS INCLUDES LEAD FINISH THICKNESS MINIMUM LEAD THICKNESS IS THE MINIMUM THICKNESS OF BASE MATERIA. 12 AME, Inc. 1.5A Low Dropout Positive Voltage Regulator AME1086 n Package Dimension TO-263-2 (D2PAK) SYMBOLS A B C D E G H K L M N P R S W * MILLIMETERS MIN MAX 9.65 10.41 8.28 9.65 4.06 4.83 0.51 1.02 1.14 1.40 * 2.54 14.61 15.88 1.02 1.68 0.00 0.97 2.49 2.74 0.43 0.58 2.29 2.79 o 8? 0 2.41 2.67 0.254 0.508 INCHES MIN MAX 0.380 0.410 0.326 0.380 0.160 0.190 0.020 0.040 0.045 0.055 * 0.100 0.575 0.625 0.040 0.066 0.000 0.038 0.098 0.108 0.017 0.023 0.090 0.110 o 0 8? 0.095 0.105 0.010 0.020 : Typical value NOTES : 1. CONTROLLING DIMENSION : MILLIMETERS. 2MAXIMUM LEAD THICKNESS INCLUDES LEAD FINISH THICKNESS MINIMUM LEAD THICKNESS IS THE MINIMUM THICKNESS OF BASE MATERIA. 13 www.ame.com.tw E-Mail: [email protected] Life Support Policy: These products of AME, Inc. are not authorized for use as critical components in life-support devices or systems, without the express written approval of the president of AME, Inc. AME, Inc. reserves the right to make changes in the circuitry and specifications of its devices and advises its customers to obtain the latest version of relevant information. AME, Inc. , December 2001 Document: 1015-DS1086-C U.S. Headquarter Corporate Headquarter Analog Microelectronics, Inc. AME, Inc. 3100 De La Cruz Blvd. Suite 201 Santa Clara, CA. 95054-2046 2F, 189 Kang-Chien Road, Nei-Hu Dist., Taipei 114, Taiwan, R.O.C. Tel : (408) 988-2388 Fax: (408) 988-2489 Tel : 886 2 2627-8687 Fax : 886 2 2659-2989