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PDF RC1585 Data sheet ( Hoja de datos )
| Número de pieza | RC1585 | |
| Descripción | Power Conversion for the Data Communications Market | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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RC1585
5A Adjustable/Fixed Low Dropout Linear Regulator
Features
• Fast transient response
• Low dropout voltage at up to 5A
• Load regulation: 0.05% typical
• Trimmed current limit
• On-chip thermal limiting
• Standard TO-220, TO-263, TO-263 center cut and TO-252
packages
Applications
• Pentium® class GTL+ bus supply
• Low voltage logic supply
• Post regulator for switching supply
Typical Applications
Description
The RC1585 and RC1585-1.5 are low dropout three-terminal
regulators with 5A output current capability. These devices
have been optimized for low voltage applications including
VTT bus termination, where transient response and mini-
mum input voltage are critical. The RC1585 is ideal for low
voltage microprocessor applications requiring a regulated
output from 1.5V to 3.6V with an input supply of 5V or less.
The RC1585-1.5 offers fixed 1.5V with 5A current capabili-
ties for GTL+ bus VTT termination.
Current limit is trimmed to ensure specified output current
and controlled short-circuit current. On-chip thermal limit-
ing provides protection against any combination of overload
and ambient temperature that would create excessive junc-
tion temperatures.
The RC1585 series regulators are available in the industry-
standard TO-220, TO-263, TO-263 center cut and TO-252
power packages.
VIN = 3.3V
10µF
+
RC1585
VIN VOUT
ADJ
124Ω
1.5V at 5A
+
22µF
24.9Ω
VIN = 3.3V
10µF
+
RC1585-1.5
VIN VOUT
GND
1.5V at 5A
+
22µF
65-1585-01a
Pentium is a registered trademark of Intel Corporation.
REV. 1.1.4 10/8/02
1 page  
PRODUCT SPECIFICATION
Typical Performance Characteristics (continued)
RC1585
8.0
7.0
6.0
5.0
4.0
-75 -50 -25 0 25 50 75 100 125 150 175
JUNCTION TEMPERATURE (°C)
Figure 7. Short-Circuit Current vs. Temperature
90
80
70
60
50
40
30
20 (VIN – VOUT) ≤ 3V
0.5V ≤ VRIPPLE ≤ 2V
10 IOUT = 5A
0
10 100
1K
10K 100K
FREQUENCY (Hz)
Figure 8. Ripple Rejection vs. Frequency
20
15
10
5
0
50 60 70 80 90 100 110 120 130 140 150
CASE TEMPERATURE (°C)
Figure 9. Maximum Power Dissipation
REV. 1.1.4 10/8/02
5
5 Page 
PRODUCT SPECIFICATION
Mechanical Dimensions (continued)
3-Lead TO-220 Package
Symbol
A
b
b1
c1
øP
D
E
e
e1
e3
F
H1
J1
L
L1
Q
α
Inches
Min. Max.
.140 .190
.015 .040
.045 .070
.014 .022
.139 .161
.560 .650
.380 .420
.090 .110
.190 .210
.045 —
.020 .055
.230 .270
.060 .115
.500 .580
.250 BSC
.100 .135
3° 7°
Millimeters
Min. Max.
3.56 4.83
.38 1.02
1.14 1.78
.36 .56
3.53 4.09
14.22 16.51
9.65 10.67
2.29 2.79
4.83 5.33
1.14 —
.51 1.40
5.94 6.87
2.04 2.92
12.70 14.73
6.35 BSC
2.54 3.43
3° 7°
Notes
Notes:
1. Dimension c1 apply for lead finish.
e
e1
L
e3 b1
b
L1
H1
Q
E
E-PIN øP
c1
J1
α (5X)
D
A
RC1585
F
REV. 1.1.4 10/8/02
11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet RC1585.PDF ] | |
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