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AME, Inc.
AME1505
High Power BiPolar Linear LDO
n General Description
The AME1505 is a 5A low-dropout positive voltage regulator. The dropout voltage of AME1505 is 750mV at maximum output current. The output voltage is preset at factory. It is available in fixed and adjustable output voltage versions. The fixed voltage range could expand from 1.25V to 3.7V, where 5V and 3.3V voltage supplies are available. AME1505 has 2 new features: First, a remote Sense pin is wired out to eliminate output voltage variation due to load changes. Secondly, an extra Control pin is available to effectively decrease Vin to Vo drop. It greatly improves the power dissipation. Overcurrent and thermal protection are integrated onto the chip. Output current will limit as it reaches the preset current. AME1505 series have excellent regulation over line, load and temperature variations.
n Functional Block Diagram
VCONTROL VPOWER
Current Limiting Amplifier
Thermal Protection
Output
Sense
Error Amp. Bandgap Reference
n Features
l Low dropout voltage --- 750mV at 5A l Adjustable or 1.25~3.7V fixed voltage l Line regulation 3 mV maximum l Load regulation 7mV maximum l Adjust pin (ADJ) current less than 120A l Dual voltage supplies is recommended l Overcurrent protection l Available in TO-220-5, TO-263-5
3.3V
ADJ/GND
n Typical Application
V power
VOUT
2.5V
5.0V
AME1505
V control ADJ VSENSE
n Applications
l VGA Card Supplies l Post Regulators for Switching Supplies l Microprocessor Supply l Chipset Supplies l LCD Monitor Power
GND
VREF 100 ohm 100 ohm
1
AME, Inc.
AME1505
High Power BiPolar Linear LDO
n Pin Configuration
TO-263-5 Front View AME 1505 1. SENSE 2. ADJ / GND 3. OUTPUT 4. VCONTROL 5. VPOWER
1 234 5
TO-220-5 Front View AME 1505 1. SENSE 2. ADJ / GND 3. OUTPUT 4. VCONTROL 5. VPOWER
AME1505
AMExxxx AME1505
1
2
3
45
n Ordering Information AME1505 x x x x x x
Special Feature Voltage Number of Pins Package Type Operating Temperature Range Product Grade or Option
Product Grade or Option Operating Temperature Range C: 0OC to 70OC Number of Pins V: 5
Package Type
Voltage
Special Feature
A
(TO-263)
1. SENSE 2. ADJ/GND 3. Output 4. VCONTROL 5. VPOWER 1. SENSE 2. ADJ/GND 3. Output 4. VCONTROL 5. VPOWER
B: TO-220 D: TO-263
ADJ: 150: 250: 330:
ADJ 1.5V 2.5V 3.3V
Z: Lead Free
A
(TO-220)
2
AME, Inc.
AME1505
High Power BiPolar Linear LDO
n Ordering Information (contd.)
Part Number
AME1505ACBVADJ
Marking*
AME1505 ACBVADJ yyww AME1505 ACBVADJ yyww AME1505 ACBV150 yyww AME1505 ACBV150 yyww AME1505 ACBV250 yyww AME1505 ACBV250 yyww AME1505 ACBV330 yyww AME1505 ACBV330 yyww AME1505 ACDVADJ yyww AME1505 ACDVADJ yyww AME1505 ACDV150 yyww AME1505 ACDV150 yyww
Output Voltage
ADJ
Package
TO-220-5
Operating Temp. Range
0o to 70oC
AME1505ACBVADJZ
ADJ
TO-220-5
0o to 70oC
AME1505ACBV150
1.5
TO-220-5
0o to 70oC
AME1505ACBV150Z
1.5
TO-220-5
0o to 70oC
AME1505ACBV250
2.5
TO-220-5
0o to 70oC
AME1505ACBV250Z
2.5
TO-220-5
0o to 70oC
AME1505ACBV330
3.3
TO-220-5
0o to 70oC
AME1505ACBV330Z
3.3
TO-220-5
0o to 70oC
AME1505ACDVADJ
ADJ
TO-263-5
0o to 70oC
AME1505ACDVADJZ
ADJ
TO-263-5
0o to 70oC
AME1505ACDV150
1.5
TO-263-5
0o to 70oC
AME1505ACDV150Z
1.5
TO-263-5
0o to 70oC
Note: yyww represents the date code * A line on top of the first letter represents lead free plating such as AME1505 Please consult AME sales office or authorized Rep./Distributor for the availability of output voltage and package type .
3
AME, Inc.
AME1505
High Power BiPolar Linear LDO
n Absolute Maximum Ratings
Parameter
Input Voltage VCONTROL Thermal Resistance (Junction to Ambient) TO-220-5 JA TO-263-5 TJ TSTG TLEAD 62.5 0 to 125 - 65 to 150 260
o
Symbol
VPOWER
Maximum
7
Unit
V
13 50
o
C/W
Operating Junction Temperature Range Storage Temperature Range Lead Temperature (10 Sec)
C
Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device
4
AME, Inc.
AME1505
High Power BiPolar Linear LDO
n Electrical Specifications
Electrical Characteristics at IO=0mA, and Tj=25OC unless otherwise specified Parameter Reference voltage (adjustable voltage) Symbol Test Condition VCONTROL = 2.75V, Vpower=2V, Io=10mA VCONTROL = 2.75 ~ 12V, Vpower=3.3 ~ 5.5V, Io=10mA ~ 5A VCONTROL = 4V, Vpower=3.3V, Io=10mA VCONTROL = 3V, Vpower=2.3V, Io= 10mA ~ 5A VCONTROL = 5V, Vpower=3.3V, Io=10mA VCONTROL = 4V, Vpower=3.3V, Io= 10mA ~ 5A VCONTROL = 5.8V, Vpower=3.8V, Io=10mA VCONTROL = 4.8V, Vpower=4.1V, Io= 10mA ~ 5A Io=10mA, 1.5V<= (V CONTROL-V OUT) =< 12V, 0.8V<= (V POWER -V OUT) =< 5.5V VCONTROL =Vout +2.5V, VPOWER = VOUT+0.8V Io=10 mA ~ 5A VPOWER = Vo + 0.8V, Io=5A VD VCONTROL = Vo + 2.5V, Io=5A Imin VCONTROL = 5V, VPOWER = 3.3V, VADJ= 0V VCONTROL = Vo + 2.5V, VPOWER = Vo + 0.8V, Io = 10mA ~ 5A VCONTROL = Vo + 2.5V, VPOWER = Vo + 0.8V, Io = 10mA ~ 5A VCONTROL = 2.75V, VPOWER = 2.05V, Io =10mA IS TC TS RA VIN - Vo = 5V VIN = 2.75 - 7V, IO = 10mA - 5A VIN = 5V, IO = 500mA, Over temp. VCONTROL = VPOWER = Vo + 2.5V, VRIPPLE = 1V P-P, Io =2A 5.0 0.5 60 0.45 5 80 6 50 7.5 0.005 0.5 80 0.75 10 100 10 120 mA mA mA A A %/ oC % dB Min 1.238 1.250 1.225 1.485 1.500 1.470 2.475 2.500 2.450 3.267 3.300 3.234 1 1 1.30 3.366 5 7 1.45 V mV mV 2.550 3.333 1.530 2.525 V 1.275 1.515 Typ Max 1.262 V Units
VREF
1.5V
Output Voltage
2.5V
3.3V
Line regulation Load regulation Control Dropout ( VCONTROL - Vo ) Power Dropout ( VPOWER - Vo ) Minimum Load Current (ADJ only) Control Pin Current Ground Pin Current ADJ Pin Current Current limit Temperature Coefficient Temperature stability Ripple rejection ratio
RegLINE RegLOAD
5
AME, Inc.
AME1505
High Power BiPolar Linear LDO
n Application Description
1. Output voltage adjustment Like most regulators, the AME1505 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 VOUT = VREF ( 1 + ) + IADJ x R2 R1 On fixed versions of AME1505, the voltage divider is factory-preset internally. 2. Current limit protection AME1505 is protected against overload conditions. Current protection is triggered at typical 7.5A. 3. Stability and load regulation AME1505 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 10F tantalum or 50F aluminum electrolytic is sufficient.
(Note: It is important that the ESR for this capacitor does not exceed 0.5.)
The output capacitor dose not have a theoretical upper limit and increasing its value will increase stability. COUT = 100F or more is typical for high current regulator design. 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 AME1505. 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. The ground pin can be connected to low side of the load to eliminate ground loop errors.
VIN
VCONTROL VPOWER ADJ
OUT SENSE R1
VOUT
C1 IADJ
VREF
VCONTROL VCONTROL VPOWER VPOWER SENSE ADJ OUT
RP Parasitic Line Resistance
R2
R1 (Connect R1 to case)
RL
VOUT = VREF (1+ R2 ) + I ADJ x R2 R1
R2
Connect R2 to load
6
AME, Inc.
AME1505
4. Thermal consideration The AME1505 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 exceeded. As mention in thermal protection section, we need to consider all 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.
High Power BiPolar Linear LDO
7
AME, Inc.
AME1505
Reference Voltage vs. Temperature
1.2515 1.2510
High Power BiPolar Linear LDO
Adjustable Pin Current vs. Temperature
58
Reference Voltage (V)
56
1.2505 1.2500 1.2495 1.2490 1.2485 1.2480 -45
ADJ pin Current (uA)
-5 25 55 85
54
52
50
48
46 -45
-5
25
55
85
Temperature (oC)
Temperature (o C)
Control Pin Current vs. Temperature
10.5
Control Dropout Voltage vs. Load
1.35
Control Pin Current @ 10mA (mA)
10.0 9.5 9.0 8.5 8.0 7.5 7.0 6.5 6.0 -45 -5 25 55 85
Control Pin Dropout Voltage (V)
25 oC
1.30
1.25
85 oC
1.20
1.15
1.10 1 2 3 4 5
Temperature
(oC)
Load Current (A)
Output Voltage vs. Load Current
2.491 2.490 2.489 2.488 2.487 2.486 2.485 2.484 2.483 1
Power Dropout Voltage vs. Load
700 600
VP Dropout Voltage (mV)
V OUT =2.5V
Output Voltage (V)
500 400 300 200 100 0 1 2 3 4 5
VOUT=2.5V
2
3
4
5
Load Current (A)
Load Current (A)
8
AME, Inc.
AME1505
High Power BiPolar Linear LDO
n External Resistor 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 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 96.20 100.4 104.6 108.7 112.9 117.1 121.3 125.5 129.7 133.8 138.0 142.2 146.4 150.6 154.8 100 102 105 107 110 113 115 118 121 124
R2(Ohm)=(Vout-1.25)*R1/(1.25+50u*R1) 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
9
AME, Inc.
AME1505
High Power BiPolar Linear LDO
n External Resistor Divider Table for Customized Voltage (contd.)
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 5.00 151.4 155.4 159.4 163.3 167.3 171.3 175.3 179.3 183.3 187.3 191.2 195.2 199.2 203.2 207.2 211.2 215.1 219.1 223.1 227.1 231.1 235.1 239.0 243.0 247.0 251.0 255.0 259.0 262.9 266.9 270.9 274.9 278.9 282.9 286.9 290.8 294.8 298.8 154.4 158.5 162.5 166.6 170.7 174.7 178.8 182.9 186.9 191.0 195.0 199.1 203.2 207.2 211.3 215.4 219.4 223.5 227.6 231.6 235.7 239.7 243.8 247.9 251.9 256.0 260.1 264.1 268.2 272.2 276.3 280.4 284.4 288.5 292.6 296.6 300.7 304.8 158.9 163.1 167.3 171.5 175.7 179.8 184.0 188.2 192.4 196.6 200.8 204.9 209.1 213.3 217.5 221.7 225.9 230.0 234.2 238.4 242.6 246.8 250.9 255.1 259.3 263.5 267.7 271.9 276.0 280.2 284.4 288.6 292.8 297.0 301.1 305.3 309.5 313.7 100 102 105 107 110 113 115 118 121 124
R2(Ohm)=(Vout-1.25)*R1/(1.25+50u*R1) 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
10
AME, Inc.
AME1505
High Power BiPolar Linear LDO
n Package Dimension
TO-263-5
Top View A E K Side View
SYMBOLS A B C D E G H K N P R W
MILLIMETERS MIN
10.050 8.280 4.310 0.660 1.140 14.605 1.143 0.330 2.280 0
o
INCHES MIN
0.396 0.326 0.170 0.026 0.045 0.575 0.045 0.013 0.090 0
o
MAX
10.668 9.169 4.670 0.910 1.400 15.875 1.680 0.580 2.800 8
o
MAX
0.420 0.361 0.184 0.036 0.055 0.625 0.066 0.023 0.110 8
o
B
1.70REF
0.067 REF
H
P W D Front View C G N R
0.25REF
0.01REF
TO-220-5
Top View B C I Side View H
SYMBOLS A B
MILLIMETERS MIN
2.616 REF 10.160 3.708 8.915 12.700 1.575 0.711 4.343 1.143 14.859 2.032 0.305
INCHES MIN
0.103 REF 0.400 0.146 0.351 0.500 0.062 0.028 0.171 0.045 0.585 0.080 0.012
MAX
2.870 REF 10.668 3.962 9.169 14.732 1.829 0.965 4.597 1.397 15.113 3.048 0.457
MAX
0.113 REF 0.420 0.156 0.361 0.580 0.072 0.038 0.181 0.055 0.595 0.120 0.018
A
C D
J D
E F G H I J K L
E
F
G
L K
11
www.ame.com.tw
E-Mail: sales@ame.com.tw
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. (c) AME, Inc. , June 2005 Document: 2039-DS1505-J
Corporate Headquarter
AME, Inc.
2F, 302 Rui-Guang Road, Nei-Hu District Taipei 114, Taiwan. Tel: 886 2 2627-8687 Fax: 886 2 2659-2989
U.S.A.(Subsidiary)
Analog Microelectronics, Inc.
3100 De La Cruz Blvd., Suite 201 Santa Clara, CA. 95054-2046 Tel : (408) 988-2388 Fax: (408) 988-2489

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