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Dropout Positive Voltage Regulator AME1084 low-dropout positive v


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AME1084
Dropout Positive Voltage Regulator
AME1084 low-dropout positive voltage regulator. available fixed adjustable output voltage versions. Overcurrent thermal protection integrated onto chip. Output current will limit reaches pre-set current temperature limit. full rated output current dropout voltage 1.4V (max.). AME1084 series regulators provide excellent regulation over line, load temperature variations.
Features
dropout voltage 1.4V Adjustable 3.3V fixed voltage Line regulation typically 0.015% Load regulation typically 0.05% Adjust (ADJ) current less than 90µA Overcurrent protection Thermal protection Available TO-220, TO-263, TO-252
Applications
High Efficiency Linear Regulators Post Regulators Switching Supplies 3.3V Voltage Converter Battery Charger
Functional Block Diagram
Input
Typical Application
AME1084V
10µF Load
Current Limiting Amplifier Thermal Protection
4.75V 5.25V
10µF
Output
Figure
Error Amp.
Bandgap Reference
Figure
ADJ/GND
AME1084
Dropout Positive Voltage Regulator
Configuration
AME1084
1084
ADJ/GND
TO-220 Front View
To-252 Front View
1084
1084
TO-263-2 Front View
TO-263-3 Front View
AME1084
Dropout Positive Voltage Regulator
Ordering Information
1084A rking 1084 1084 1084 1084 1084 CDT-3 1084 CDT-3 1084 CCDT-3 1084 DCDT-3 1084 1084 1084 CCDT 1084 DCDT 1084 1084 1084 CCCS 1084 DCCS Output olta TO-220
1084B
TO-220
1084CCB
TO-220
1084DCB
TO-220
1084A CDT-3
TO-263-3
1084B CDT-3
TO-263-3
1084CCDT-3
TO-263-3
1084DCDT-3
TO-263-3
1084A
TO-263-2
1084B
TO-263-2
1084CCDT
TO-263-2
1084DCDT
TO-263-2
1084A
TO-252
1084B
TO-252
1084CCCS
TO-252
1084DCCS
TO-252
AME1084
Dropout Positive Voltage Regulator
Absolute Maximum Ratings
Parameter Input Voltage Thermal Resistance (Junction Case) TO-220 TO-252 TO-263 TO-220 TO-252 TO-263 Symbol Maximum TSTG TLEAD Unit
Thermal Resistance (Junction Ambient) Operating Junction Temperature Range Storage Temperature Range Lead Temperature sec)
AME1084
Dropout Positive Voltage Regulator
Electrical Characteristics
1084AXXX Parameter Reference voltage
(adjustable voltage) Line regulation Load regulation Dropout voltage VOUT, Current limit Temperature Coefficient Adjust current Adjust current change Temperature stability Minimum load current output noise Ripple rejection ratio Symbol RegLINE RegLOAD IADJ IADJ 10mA 2.75 10mA 10mA 2.75 10mA 2.75 Over temp. 2.75 10mA 2.75 10mA Over temp.
Test Conditions =25OC =25OC Over temp. =25OC Over temp. =25OC Over temp.
Min. 1.238
Typ. 1.250 0.015 0.035 0.05 0.005 0.003
Max. 1.262 1.275
Units %/OC
Over temp. 1.225
2.75 10mA Over temp. 500mA, Over temp. Over temp.
1084DXXX
Parameter Output voltage (fixed voltage) Line regulation Load regulation Dropout voltage OUT, Current limit Quiescent current (fixed model) Temperature Coefficient Temperature stability output noise Ripple rejection ratio Symbol RegLINE RegLOAD Over temp. =5V, Io=0-5A, Over temp. 500mA, Over temp. Over temp.
Test Conditions =25OC Over temp. =25OC Over temp. =25OC Over temp.
Min. 3.267
Typ. 3.300 0.015 0.035 0.05 0.005 0.003
Max. 3.333 3.366
Units
Over temp. 3.234
AME1084
Dropout Positive Voltage Regulator
Current limit protection AME1084 protected against overload conditions. Current protection triggered typical 7.5A. Stability load regulation AME1084 requires capacitor from VOUT provide compensation feedback internal gain stage. This ensure stability output terminal. Typically, 10µF tantalum 50µF aluminum electrolytic sufficient. Note: important that this capacitor does exceed 0.5. output capacitor dose have theoretical upper limit increasing value will increase stability. COUT 100µF more typical high current regulator design. adjustable version, best load regulation accomplished when theresistor divider (R1) connected directly theoutput AME1084. When connected, multiplied divider ratio. fixed output versions, internally connected output. ground connected side load eliminate ground loop errors.
Application Description
Output voltage adjustment Like most regulators, AME1084 regulates output comparing output voltage internally generated reference voltage. adjustable version, VREF available externally 1.25V between VOUT ADJ. voltage ratio formed should conduct 10mA (minimum output load). output voltage given following equation: IADJ VOUT VREF fixed versions AME1084, voltage divider provided internally.
50µA
Figure
Parasitic Line Resistance
Thermal protection AME1084 thermal protection which limits junction temperature 150OC. However, device functionality only guaranteed maximum junction temperature +125OC. power dissipation junction temperature AME1084 TO-220 package given (VIN VOUT) IOUT TJUNCTION TAMBIENT Note: TJUNCTION must exceed 125OC
(Connect case)
Connect load
Figure
AME1084
Dropout Positive Voltage Regulator
Thermal consideration AME1084 series contain thermal limiting circuitry designed protect itself overtemperature conditions. Even normal load conditions, maximum junction temperature ratings must exceed. mention thermal protection section, need consider sources thermal resistance between junction ambient. includes junction-to-case, case-to-heat-sink interface heat sink thermal resistance itself. Junction-to-case thermal resistance specified from junction bottom case directly below die. Proper mounting required ensure best possible thermal flow from this area package heat sink. case devices this series electrically connected output. Therefore, case device must electrically isolated, thermally conductive spacer recommended.
AME1084
Dropout Positive Voltage Regulator
Advanced Applications
AME1084
3.45V
10µF 10µF
10µF
VREF
IADJ Optional improved ripple rejection
Figure Adjustable Output Voltage
AME1084
10µF
10µF
AME1084
20mW ballast resistance inter connection wire could ballast resistance Figure Paralleling Regulators
AME1084
Dropout Positive Voltage Regulator
Advanced Applications (Cont.)
10µF
AME1084
Zener diode voltage reference
VREF (VZ: breakdown voltage Zener diode) Optional improved ripple rejection Figure Regulator with Reference
AME1084
10µF
100µF
Figure Regulator with Reverse Diode Protection
AME1084
Dropout Positive Voltage Regulator
Performance Characteristics
Drop-out Voltage Load Current
1.30 1.25
Minimum Operation Current Input/Output Differential Voltage
Minimum Operation Current (mA)
Drop-out Volatge
1.20 1.15 1.10 1.05 1.00 0.95 0.90
Load Current
Input/Output Differential Voltage(V)
Output Short circuit Current Input/Output Differential Voltage
Output Short Circuit Current
Input/Output Differential Voltage(V)
AME1084
Dropout Positive Voltage Regulator
External Resistor Divider Table 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 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 0.000 0.000 0.000 0.000 0.000 4.182 4.262 4.381 4.500 4.579 4.698 8.365 8.524 8.761 8.999 9.158 9.396 12.55 12.79 13.14 13.50 13.74 14.09 16.73 17.05 17.52 18.00 18.32 18.79 20.91 21.31 21.90 22.50 22.89 23.49 25.09 25.57 26.28 27.00 27.47 28.19 29.28 29.83 30.67 31.50 32.05 32.88 33.46 34.09 35.05 36.00 36.63 37.58 37.64 38.36 39.43 40.50 41.21 42.28 41.82 42.62 43.81 45.00 45.79 46.98 46.01 46.88 48.19 49.50 50.37 51.68 50.19 51.14 52.57 54.00 54.95 56.37 54.37 55.40 56.95 58.50 59.53 61.07 58.55 59.66 61.33 63.00 64.11 65.77 62.74 63.93 65.71 67.49 68.68 70.47 66.92 68.19 70.09 71.99 73.26 75.17 71.10 72.45 74.47 76.49 77.84 79.86 75.28 76.71 78.85 80.99 82.42 84.56 79.47 80.97 83.23 85.49 87.00 89.26 83.65 85.24 87.61 89.99 91.58 93.96 87.83 89.50 92.00 94.49 96.16 98.65 92.01 93.76 96.38 98.99 100.7 103.4 96.20 98.02 100.8 103.5 105.3 108.1 100.4 102.3 105.1 108.0 109.9 112.7 104.6 106.5 109.5 112.5 114.5 117.4 108.7 110.8 113.9 117.0 119.1 122.1 112.9 115.1 118.3 121.5 123.6 126.8 117.1 119.3 122.7 126.0 128.2 131.5 121.3 123.6 127.0 130.5 132.8 136.2 125.5 127.9 131.4 135.0 137.4 140.9 129.7 132.1 135.8 139.5 141.9 145.6 133.8 136.4 140.2 144.0 146.5 150.3 138.0 140.6 144.6 148.5 151.1 155.0 142.2 144.9 148.9 153.0 155.7 159.7 146.4 149.2 153.3 157.5 160.3 164.4 150.6 153.4 157.7 162.0 164.8 169.1 154.8 157.7 162.1 166.5 169.4 173.8 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
AME1084
Dropout Positive Voltage Regulator
External Resistor Divider Table Customized Voltage
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 5.00 151.4 155.4 159.4 163.3 167.3 171.3 175.3 179.3 183.3 187.3 191.2 195.2 199.2 203.2 207.2 211.2 215.1 219.1 223.1 227.1 231.1 235.1 239.0 243.0 247.0 251.0 255.0 259.0 262.9 266.9 270.9 274.9 278.9 282.9 286.9 290.8 294.8 298.8 154.4 158.5 162.5 166.6 170.7 174.7 178.8 182.9 186.9 191.0 195.0 199.1 203.2 207.2 211.3 215.4 219.4 223.5 227.6 231.6 235.7 239.7 243.8 247.9 251.9 256.0 260.1 264.1 268.2 272.2 276.3 280.4 284.4 288.5 292.6 296.6 300.7 304.8 158.9 161.9 166.5 171.0 174.0 178.5 163.1 166.2 170.8 175.5 178.6 183.2 167.3 170.5 175.2 180.0 183.2 187.9 171.5 174.7 179.6 184.5 187.7 192.6 175.7 179.0 184.0 189.0 192.3 197.3 179.8 183.3 188.4 193.5 196.9 202.0 184.0 187.5 192.8 198.0 201.5 206.7 188.2 191.8 197.1 202.5 206.1 211.4 192.4 196.0 201.5 207.0 210.6 216.1 196.6 200.3 205.9 211.5 215.2 220.8 200.8 204.6 210.3 216.0 219.8 225.5 204.9 208.8 214.7 220.5 224.4 230.2 209.1 213.1 219.0 225.0 228.9 234.9 213.3 217.3 223.4 229.5 233.5 239.6 217.5 221.6 227.8 234.0 238.1 244.3 221.7 225.9 232.2 238.5 242.7 249.0 225.9 230.1 236.6 243.0 247.3 253.7 230.0 234.4 240.9 247.5 251.8 258.4 234.2 238.7 245.3 252.0 256.4 263.1 238.4 242.9 249.7 256.5 261.0 267.8 242.6 247.2 254.1 261.0 265.6 272.5 246.8 251.4 258.5 265.5 270.2 277.2 250.9 255.7 262.8 270.0 274.7 281.9 255.1 260.0 267.2 274.5 279.3 286.6 259.3 264.2 271.6 279.0 283.9 291.3 263.5 268.5 276.0 283.5 288.5 296.0 267.7 272.8 280.4 288.0 293.1 300.7 271.9 277.0 284.7 292.5 297.6 305.4 276.0 281.3 289.1 297.0 302.2 310.1 280.2 285.5 293.5 301.5 306.8 314.8 284.4 289.8 297.9 306.0 311.4 319.5 288.6 294.1 302.3 310.5 315.9 324.2 292.8 298.3 306.7 315.0 320.5 328.8 297.0 302.6 311.0 319.5 325.1 333.5 301.1 306.8 315.4 324.0 329.7 338.2 305.3 311.1 319.8 328.5 334.3 342.9 309.5 315.4 324.2 333.0 338.8 347.6 313.7 319.6 328.6 337.5 343.4 352.3 183.0 187.9 192.7 197.5 202.3 207.1 211.9 216.8 221.6 226.4 231.2 236.0 240.8 245.7 250.5 255.3 260.1 264.9 269.7 274.6 279.4 284.2 289.0 293.8 298.6 303.5 308.3 313.1 317.9 322.7 327.5 332.4 337.2 342.0 346.8 351.6 356.4 361.3 187.5 192.5 197.4 202.4 207.3 212.2 217.2 222.1 227.0 232.0 236.9 241.8 246.8 251.7 256.6 261.6 266.5 271.5 276.4 281.3 286.3 291.2 296.1 301.1 306.0 310.9 315.9 320.8 325.7 330.7 335.6 340.6 345.5 350.4 355.4 360.3 365.2 370.2
AME1084
Dropout Positive Voltage Regulator
Package Dimension
TO-220
SYMBOLS MILLIMETERS 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 1.14 1.52 6.17 REF. INCHES 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 0.0449 0.06 0.243 REF.
Notes Dimension apply plate finish. solder lead finish dimension should 0.015"-0.027" (0.38-0.69)
TO-263-3
BOLS
ILLIM ETER 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 2.41 2.67 0.254 0.508
CHES 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 0.095 0.105 0.010 0.020
Typical value
OTES OLLIN SION ILLIM ETER AXIM LEAD THICKN CLUD LEAD THICKN LEAD THICKN THICKN BASE ATER
AME1084
Dropout Positive Voltage Regulator
Package Dimension
TO-263-2
SYMBOLS
MILLIMETERS 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 2.41 2.67 0.254 0.508
INCHES 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 0.095 0.105 0.010 0.020
Typical value
NOTES CONTROLLING DIMENSION MILLIMETERS. 2MAXIMUM LEAD THICKNESS INCLUDES LEAD FINISH THICKNESS MINIMUM LEAD THICKNESS MINIMUM THICKNESS BASE MATERIA.
AME1084
Dropout Positive Voltage Regulator
Package Dimension
TO-252 (DPAK)
SYMBOLS Typical value
NOTES CONTROLLING DIMENSION MILLIMETERS. MAXIMUM LEAD THICKNESS INCLUDES LEAD FINISH THICKNESS MINIMUM LEAD THICKNESS MINIMUM THICKNESS BASE MATERIAL.
MILLIMETERS 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 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
TO-252 (DPAK)
SYMBOLS Typical value
NOTES CONTROLLING DIMENSION MILLIMETERS. MAXIMUM LEAD THICKNESS INCLUDES LEAD FINISH THICKNESS MINIMUM LEAD THICKNESS MINIMUM THICKNESS BASE MATERIAL.
MILLIMETERS 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 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
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Life Support Policy: These products Analog Microelectronics, Inc. authorized critical components lifesupport devices systems, without express written approval president Analog Microelectronics, Inc. Analog Microelectronics, Inc. reserves right make changes circuitry specifications devices advises customers obtain latest version relevant information. Analog Microelectronics, Inc. July 2001 Document: 1012-doc-B-0704
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