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.
Functional Block Diagram
Input
Current Limiting Amplifier
Thermal Protection
Output
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
Error Amp. Bandgap Reference
ADJ/GND
Typical Application
AME1084
VOUT
Applications
High Efficiency Linear Regulators Post Regulators Switching Supplies 3.3V Voltage Converter Battery Charger
4.75V 5.25V 10µF 10µF Load
AME1084
Dropout Positive Voltage Regulator
Configuration
TO-220 Front View AME1084 VOUT TO-252 Front View AME1084
AME1084
VOUT
AMExxxx AME1084
TO-263-2 Front View AME1084 VOUT
TO-263-3 Front View AME1084 VOUT
AME1084
AME1084
AME1084
Dropout Positive Voltage Regulator
Ordering Information
Part Number
AME1084ACBT
Marking
AME1084 ACBT yyww AME1084 BCBT yyww AME1084 CCBT yyww AME1084 DCBT yyww AME1084 ACDT-3 yyww AME1084 BCDT-3 yyww AME1084 CCDT-3 yyww AME1084 DCDT-3 yyww AME1084 ACDT yyww AME1084 BCDT yyww AME1084 CCDT yyww AME1084 DCDT yyww AME1084 ACCS yyww
Output Voltage
Package
TO-220
Operating Temp. Range
70oC
AME1084BCBT
TO-220
70oC
AME1084CCBT
TO-220
70oC
AME1084DCBT
TO-220
70oC
AME1084ACDT-3
TO-263-3
70oC
AME1084BCDT-3
TO-263-3
70oC
AME1084CCDT-3
TO-263-3
70oC
AME1084DCDT-3
TO-263-3
70oC
AME1084ACDT
TO-263-2
70oC
AME1084BCDT
TO-263-2
70oC
AME1084CCDT
TO-263-2
70oC
AME1084DCDT
TO-263-2
70oC
AME1084ACCS
TO-252
70oC
AME1084
Dropout Positive Voltage Regulator
Ordering Information (contd.)
Part Number
AME1084BCCS
Marking
AME1084 BCCS yyww AME1084 CCCS yyww AME1084 DCCS yyww
Output Voltage
Package
TO-252
Operating Temp. Range
70oC
AME1084CCCS
TO-252
70oC
AME1084DCCS
TO-252
70oC
Please consult sales office authorized Rep./Distributor other voltage accuracy package type availability.
Absolute Maximum Ratings
Parameter
Input Voltage TO-220 Thermal Resistance (Junction Case) TO-252 TO-263 TO-220 Thermal Resistance (Junction Ambient) TO-252 TO-263 TO-220 Internal Power Dissipation 100oC) TO-252 TO-263 Operating Junction Temperature Range Storage Temperature Range Lead Temperature Sec) TSTG TLEAD
Symbol
Maximum
Unit
3000 1200 2800
Caution: Stress above listed absolute maximum rating cause permanent damage device
AME1084
Dropout Positive Voltage Regulator
Electrical Specifications
AME1084Axxx
Parameter Reference voltage (adjustable voltage) Line regulation Load regulation Dropout voltage VOUT, VREF Current limit Temperature Coefficient Adjust current Adjust current change Temperature stability Minimum load current output noise Ripple rejection ratio Symbol VREF RegLINE RegLOAD IADJ IADJ Test Condition 10mA 2.75 10mA 10mA 10mA =25oC Over temp. =25oC Over temp. =25oC Over temp. =25oC Over temp. 1.238 1.225 1.250 0.015 0.035 0.05 0.005 0.003 1.262 1.275 Units
2.75 Over temp. 2.75 10mA 2.75 10mA 25oC Over temp.
2.75 10mA Over temp. 500mA, Over temp. Over temp.
AME1084Bxxx Parameter Output voltage (fixed voltage) Line regulation Load regulation Dropout voltage VOUT, VREF Current limit Quiescent current (fixed model) Temperature Coefficient Temperature stability output noise Ripple rejection ratio Symbol RegLINE RegLOAD Test Condition Over temp. =25oC Over temp. =25oC Over temp. =25oC Over temp.
1.485 1.470
1.500 0.015 0.035 0.05 0.005 0.003
1.515 1.530
Units
Over temp. =5V, Io=0-5A, Over temp. 500mA, Over temp. 25oC Over temp.
AME1084
Dropout Positive Voltage Regulator
Electrical Specifications (contd.)
AME1084Cxxx
Parameter Output voltage (fixed voltage) Line regulation Load regulation Dropout voltage VOUT, VREF Current limit Quiescent current (fixed model) Temperature Coefficient Temperature stability output noise Ripple rejection ratio Symbol RegLINE RegLOAD Test Condition Over temp. =25oC Over temp. =25oC Over temp. =25oC Over temp.
2.475 2.450
2.500 0.015 0.035 0.05 0.005 0.003
2.525 2.550
Units
Over temp. =5V, Io=0-5A, Over temp. 500mA, Over temp. Over temp.
AME1084Dxxx
Parameter Output voltage (fixed voltage) Line regulation Symbol Test Condition =25oC Over temp. =25oC Over temp. =25oC Over temp. =25oC Over temp. 3.267 3.300 3.234 0.015 0.035 0.05 0.005 0.003 3.366 3.333 Units
RegLINE
Load regulation Dropout voltage VOUT, VREF Current limit Quiescent current (fixed model) Temperature Coefficient Temperature stability output noise Ripple rejection ratio
RegLOAD
Over temp. =5V, Io=0-5A, Over temp. 500mA, Over temp. Over temp.
AME1084
Dropout Positive Voltage Regulator
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: VOUT VREF IADJ fixed versions AME1084, voltage divider provided internally.
IADJ 50µA VREF VOUT
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 does have theoretical upper limit increasing value will increase stability. COUT 100µF more typical high current regulator design. adjustable version, best load regulation accomplished when resistor divider (R1) connected directly output AME1084. When connected, multiplied divider ratio. fixed output versions, internally connected output. ground connected side load eliminate ground loop errors.
VOUT VREF (1+R2 IADJ
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 VOUT) IOUT TJUNCTION TAMBIENT Note: TJUNCTION must exceed 125oC
Parasitic Line Resistance
(Connect case)
Connect load
AME1084
Thermal consideration AME1084 series contain thermal limiting circuitry designed protect itself over-temperature 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.
Dropout Positive Voltage Regulator
AME1084
Dropout Positive Voltage Regulator
Advanced Applications
Adjustable Output Voltage
AME1084
3.45V
10µF
10µF
10µF
Note: VOUT VREF
IADJ
Optional improved ripple rejection Paralleling Regulators
AME1084
VOUT
VOUT
10µF
10µF
AME1084
VOUT
Note: ballast resistance inter connection wire could ballast resistance
AME1084
Dropout Positive Voltage Regulator
Advanced Applications (contd.)
Regulator with Reference
AME1084
10µF 10µF Zener diode voltage reference
10µF
Note:
VREF breakdown voltage Zener diode) Optional improved ripple rejection
Regulator with Reverse Diode Protection
AME1084
VOUT
10µF
100µF
AME1084
Dropout Positive Voltage Regulator
Performance Characteristics
Drop Voltage Load Current
1.30 1.25
Minimum Operation Current Input/OutputDifferential 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
(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 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
0.000 4.262 8.524 12.79 17.05 21.31 25.57 29.83 34.09 38.36 42.62 46.88 51.14 55.40 59.66 63.93 68.19 72.45 76.71 80.97 85.24 89.50 93.76 98.02 102.3 106.5 110.8 115.1 119.3 123.6 127.9 132.1 136.4 140.6 144.9 149.2 153.4 157.7 0.000 4.381 8.761 13.14 17.52 21.90 26.28 30.67 35.05 39.43 43.81 48.19 52.57 56.95 61.33 65.71 70.09 74.47 78.85 83.23 87.61 92.00 96.38 100.8 105.1 109.5 113.9 118.3 122.7 127.0 131.4 135.8 140.2 144.6 148.9 153.3 157.7 162.1 0.000 4.500 8.999 13.50 18.00 22.50 27.00 31.50 36.00 40.50 45.00 49.50 54.00 58.50 63.00 67.49 71.99 76.49 80.99 85.49 89.99 94.49 98.99 103.5 108.0 112.5 117.0 121.5 126.0 130.5 135.0 139.5 144.0 148.5 153.0 157.5 162.0 166.5 0.000 4.579 9.158 13.74 18.32 22.89 27.47 32.05 36.63 41.21 45.79 50.37 54.95 59.53 64.11 68.68 73.26 77.84 82.42 87.00 91.58 96.16 100.7 105.3 109.9 114.5 119.1 123.6 128.2 132.8 137.4 141.9 146.5 151.1 155.7 160.3 164.8 169.4 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
AME1084
Dropout Positive Voltage Regulator
External Resistor Divider Table Customized Voltage (contd.)
(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 5.00 151.4 155.4 159.4 163.3 167.3 171.3 175.3 179.3 183.3 187.3 191.2 195.2 199.2 203.2 207.2 211.2 215.1 219.1 223.1 227.1 231.1 235.1 239.0 243.0 247.0 251.0 255.0 259.0 262.9 266.9 270.9 274.9 278.9 282.9 286.9 290.8 294.8 298.8 154.4 158.5 162.5 166.6 170.7 174.7 178.8 182.9 186.9 191.0 195.0 199.1 203.2 207.2 211.3 215.4 219.4 223.5 227.6 231.6 235.7 239.7 243.8 247.9 251.9 256.0 260.1 264.1 268.2 272.2 276.3 280.4 284.4 288.5 292.6 296.6 300.7 304.8 158.9 163.1 167.3 171.5 175.7 179.8 184.0 188.2 192.4 196.6 200.8 204.9 209.1 213.3 217.5 221.7 225.9 230.0 234.2 238.4 242.6 246.8 250.9 255.1 259.3 263.5 267.7 271.9 276.0 280.2 284.4 288.6 292.8 297.0 301.1 305.3 309.5 313.7
161.9 166.2 170.5 174.7 179.0 183.3 187.5 191.8 196.0 200.3 204.6 208.8 213.1 217.3 221.6 225.9 230.1 234.4 238.7 242.9 247.2 251.4 255.7 260.0 264.2 268.5 272.8 277.0 281.3 285.5 289.8 294.1 298.3 302.6 306.8 311.1 315.4 319.6 166.5 170.8 175.2 179.6 184.0 188.4 192.8 197.1 201.5 205.9 210.3 214.7 219.0 223.4 227.8 232.2 236.6 240.9 245.3 249.7 254.1 258.5 262.8 267.2 271.6 276.0 280.4 284.7 289.1 293.5 297.9 302.3 306.7 311.0 315.4 319.8 324.2 328.6 171.0 175.5 180.0 184.5 189.0 193.5 198.0 202.5 207.0 211.5 216.0 220.5 225.0 229.5 234.0 238.5 243.0 247.5 252.0 256.5 261.0 265.5 270.0 274.5 279.0 283.5 288.0 292.5 297.0 301.5 306.0 310.5 315.0 319.5 324.0 328.5 333.0 337.5 174.0 178.6 183.2 187.7 192.3 196.9 201.5 206.1 210.6 215.2 219.8 224.4 228.9 233.5 238.1 242.7 247.3 251.8 256.4 261.0 265.6 270.2 274.7 279.3 283.9 288.5 293.1 297.6 302.2 306.8 311.4 315.9 320.5 325.1 329.7 334.3 338.8 343.4 178.5 183.2 187.9 192.6 197.3 202.0 206.7 211.4 216.1 220.8 225.5 230.2 234.9 239.6 244.3 249.0 253.7 258.4 263.1 267.8 272.5 277.2 281.9 286.6 291.3 296.0 300.7 305.4 310.1 314.8 319.5 324.2 328.8 333.5 338.2 342.9 347.6 352.3 183.0 187.9 192.7 197.5 202.3 207.1 211.9 216.8 221.6 226.4 231.2 236.0 240.8 245.7 250.5 255.3 260.1 264.9 269.7 274.6 279.4 284.2 289.0 293.8 298.6 303.5 308.3 313.1 317.9 322.7 327.5 332.4 337.2 342.0 346.8 351.6 356.4 361.3 187.5 192.5 197.4 202.4 207.3 212.2 217.2 222.1 227.0 232.0 236.9 241.8 246.8 251.7 256.6 261.6 266.5 271.5 276.4 281.3 286.3 291.2 296.1 301.1 306.0 310.9 315.9 320.8 325.7 330.7 335.6 340.6 345.5 350.4 355.4 360.3 365.2 370.2
AME1084
Dropout Positive Voltage Regulator
Package Dimension
TO-252(DPAK)-EIAJ
SYMBOLS
View Side View
MILLIMETERS
0.58 1.95 1.50 0.60 6.80 7.20 2.85 2.30 0.97 5.50 1.40REF 0.45 1.60 0.51 0.45 6.40 5.40 2.20 5.20
INCHES
0.0177 0.0630 0.0201 0.0177 0.2520 0.2126 0.0866 0.2047
0.0230 0.0768 0.0591 0.0236 0.2677 0.2835 0.1122 0.0906 0.0380 0.2165
0.055REF
Typical Value Notes: Controlling dimension: Millimeters. Maximum lead thickness includes lead finish thickness Minimum lead thickness minimum thickness base material.
TO-252(DPAK)-JEDC
SYMBOLS
View Side View
MILLIMETERS
0.49 1.79 0.55 0.49 6.58 6.08 2.68
INCHES
0.0192 0.0704 0.0216 0.0192 0.259 0.2393 0.1055
0.51 1.81 0.51 6.62 6.12 2.72
0.0201 0.0713 0.0201 0.2606 0.2409 0.1071
2.30REF 0.96 5.31 0.68 5.37 0.72
0.0906REF 0.0377 0.2090 0.0267 0.2114 0.0283
Typical Value Notes: Controlling dimension: Millimeters. Maximum lead thickness includes lead finish thickness Minimum lead thickness minimum thickness base material.
AME1084
Dropout Positive Voltage Regulator
Package Dimension
TO-263-2(D 2PAK)
View Side View
SYMBOLS
MILLIMETERS
9.65 8.28 4.06 0.50 1.14
INCHES
0.380 0.326 0.160 0.020 0.045
10.668 9.66 4.83 1.36 1.40 2.54 15.875 2.93
0.420 0.380 0.190 0.054 0.055
0.100 0.625
14.60 0.99
0.5748
0.03898 0.11535 0.015REF 0.08976 0.11024
0.381REF 2.28
Front View
2.80
Typical Value Notes: Controlling dimension: Millimeters. Maximum lead thickness includes lead finish thickness Minimum lead thickness minimum thickness base material.
TO-263-3(D 2PAK)
SYMBOLS
View Side View
MILLIMETERS
10.668 9.66 4.83 1.36 1.40
INCHES
0.380 0.326 0.160 0.020 0.045
0.420 0.380 0.190 0.054 0.055
9.65 8.28 4.06 0.50 1.14
2.54 15.875 2.93
0.100 0.625
14.60 0.99
0.5748
0.03898 0.11535 0.015REF 0.08976 0.11024
0.381REF 2.28
Front View
2.80
Typical Value Notes: Controlling dimension: Millimeters. Maximum lead thickness includes lead finish thickness Minimum lead thickness minimum thickness base material.
AME1084
Dropout Positive Voltage Regulator
Package Dimension
TO-220
View
SYMBOLS
Side View
MILLIMETERS
5.58 2.032 0.50 0.30 9.65 3.53 0.50 1.14 2.28 12.70 14.22
INCHES
0.2197 0.0800 0.0197 0.0118 0.3799 0.1390 0.0197 0.0449 0.0898 0.5000 0.5600
7.49 4.83 1.40 1.15 10.67 4.09 1.15 1.78 2.80 14.74 16.51
0.2949 0.1900 0.0550 0.0453 0.4200 0.1610 0.0453 0.0700 0.1102 0.5803 0.6500
www.ame.com.tw
E-Mail: sales@ame.com.tw
Life Support Policy: These products AME, Inc. authorized critical components life-support devices systems, without express written approval president AME, Inc. AME, Inc. reserves right make changes circuitry specifications devices advises customers obtain latest version relevant information. AME, Inc. April 2003 Document: 1012-DS1084-E
Corporate Headquarter
Kang-Chien Road, Nei-Hu District Taipei 114, Taiwan, R.O.C. Tel: 2627-8687 Fax: 2659-2989
U.S.A.(Subsidiary)
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3100 Cruz Blvd., Suite Santa Clara, 95054-2046 (408) 988-2388 Fax: (408) 988-2489
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