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PDF AME1084BCBT Data sheet ( Hoja de datos )
| Número de pieza | AME1084BCBT | |
| Descripción | 5A Low Dropout Positive Voltage Regulator | |
| Fabricantes | Analog Microelectronics | |
| Logotipo |  |
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Analog Microelectronics, Inc.
AME1084
5A Low Dropout
Positive Voltage Regulator
n General Description
The AME1084 is a 5A low-dropout positive voltage regu-
lator. It is available in fixed and adjustable output volt-
age 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.).
AME1084 series regulators provide excellent regulation
over line, load and temperature variations.
n Key Features
l Low dropout voltage … 1.4V at 5A
l Adjustable or 3.3V fixed voltage
l Line regulation typically 0.015%
l Load regulation typically 0.05%
l Adjust pin (ADJ) current less than 90µA
l Overcurrent protection
l Thermal protection
l Available in TO-220, TO-263, TO-252
n Applications
l High Efficiency Linear Regulators
l Post Regulators for Switching Supplies
l 5V to 3.3V Voltage Converter
l Battery Charger
n Functional Block Diagram
n Typical Application
Current
Limiting
Amplifier
Input
4.75V to 5.25V
VIN AME1084VOUT
GND
10µF Tan
10µF Tan Load
Thermal
Protection
Output
Error
Amp.
Bandgap ADJ/GND
Reference
Figure 2
Figure 1
1
1 page  
Analog Microelectronics, Inc.
AME1084
5A Low Dropout
Positive Voltage Regulator
n Electrical Characteristics
1. 1084AXXX
Pa ra m e te r
Reference voltage
(adjustable voltage)
Line regulation
Load regulation
Dropout voltage
∆ VOUT, ∆ VREF = 1%
Symbol
Test Conditions
Min.
VREF
VIN = 5V
IO = 10mA
TJ =25OC 1.238
Over temp. 1.225
RegLINE
VIN = 2.75 - 7V
IO = 10mA
TJ =25OC
Over temp.
-
-
RegLOAD
VIN = 5V
IO = 10mA - 5A
TJ =25OC
Over temp.
-
-
VD
VIN = 2.75 - 7V
IO = 10mA - 5A
TJ =25OC
Over temp.
-
-
Current limit
IS VIN = 2.75 - 7V, Over temp.
5.0
Temperature Coefficient
Adjust pin current
TC VIN = 2.75 - 7V, IO = 10mA - 5A
-
IADJ
VIN = 2.75 - 7V
IO = 10mA - 5A
TJ = 25OC
Over temp.
-
-
Adjust pin current change ∆IADJ
VIN = 2.75 - 7V, IO = 10mA - 5A
Over temp.
-
Temperature stability
TS VIN = 5V, IO = 500mA, Over temp.
0.5
Minimum load current
RMS output noise
IO VIN = 5V
VN TJ = 25OC
-
-
Ripple rejection ratio
RA VIN = 5V, IO = 5A, Over temp.
60
Typ.
1.250
0.015
0.035
0.05
0.2
1.2
1.3
-
0.005
55
-
0.2
0.5
5
0.003
72
Max.
1.262
1.275
0.2
0.2
0.3
0.4
1.4
-
-
-
-
90
5
-
10
-
-
Units
V
%
%
V
A
%/OC
µA
%
mA
%VO
dB
2. 1084DXXX
P a ra m e te r
Output voltage
(fixed voltage)
Line regulation
Load regulation
Dropout voltage
∆ VOUT, ∆ VREF = 1%
Current limit
Quiescent current
(fixed model)
Temperature Coefficient
Temperature stability
RMS output noise
Ripple rejection ratio
Symbol
Test Conditions
Min.
Vo VIN = 5V
IO = 0A
TJ =25OC 3.267
Over temp. 3.234
RegLINE
VIN = 4.5 - 7V
IO = 0A
TJ =25OC
Over temp.
-
-
RegLOAD
VIN = 5V
IO = 0A - 5A
TJ =25OC
Over temp.
-
-
VD
VIN = 4.5 - 7V
IO = 0A - 5A
TJ =25OC
Over temp.
-
-
IS VIN = 4.5 - 7V, Over temp.
5.0
IQ VIN=5V, Io=0-5A, Over temp.
-
TC VIN = 4.5 - 7V, IO = 0A - 5A
TS VIN = 5V, IO = 500mA, Over temp.
VN TJ = 25OC
RA VIN = 5V, IO = 5A, Over temp.
-
0.5
-
60
Typ.
3.300
0.015
0.035
0.05
0.2
1.2
1.3
-
Max.
3.333
3.366
0.2
0.2
0.3
0.4
1.4
-
-
12 13
0.005
0.5
0.003
72
-
-
-
-
Units
V
%
%
V
A
mA
%/0C
%
%VO
dB
5
5 Page 
Analog Microelectronics, Inc.
AME1084
5A Low Dropout
Positive Voltage Regulator
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
100
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
102
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
105 107 110 113 115 118
R2(ohm )=(Vout-1.25)*R1/(1.25+50u*R1)
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
121
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
124
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
11
11 Page | ||
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| PDF Descargar | [ Datasheet AME1084BCBT.PDF ] | |
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