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PDF ( 数据手册 , 数据表 ) FAN1585AMCX

零件编号 FAN1585AMCX
描述 5A Adjustable/Fixed Low Dropout Linear Regulator
制造商 Fairchild Semiconductor
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FAN1585AMCX 数据手册, 描述, 功能
www.fairchildsemi.com
FAN1585A
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 and TO-263 center cut packages
Applications
• AGTL+ bus supply for FC-PGA
• Low voltage logic supply
• Post regulator for switching supply
• 3.3V to 1.5V linear regulator
• 5V to 1.8V linear regulator
Description
The FAN1585A, FAN1585A-1.5, and FAN1585A-1.8 are
low dropout three-terminal regulators with 5A output current
capability. These devices have been optimized for low volt-
age applications including VTT bus termination for FC-PGA,
where transient response and minimum input voltage are
critical. The FAN1585A-1.5 offers fixed 1.5V with 5A
current capabilities for AGTL+ bus VTT termination for
FC-PGA. The FAN1585A is ideal for low voltage micro-
processor applications requiring a regulated output from
1.5V to 3.6V with an input supply of 5V or less, or for
FC-PGA applications with significant trace resistance.
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 FAN1585A series regulators are available in the industry-
standard TO-220, TO-263 and TO-263 center cut power
packages.
Typical Applications
VIN = 3.3V
22µF
+
FAN1585A
VIN VOUT
ADJ
VOUT = VREF(1 + R2/R1) + IAdj • R2
R1
124
1.5V at 5A
+
22µF
R2
24.9
VIN = 3.3V
22µF
+
FAN1585A-1.5
VIN VOUT
GND
1.5V at 5A
+
22µF
REV. 1.1.5 11/7/03







FAN1585AMCX pdf, 数据表
FAN1585A
Junction-to-case thermal resistance is specified from the IC
junction to the bottom of the case directly below the die. This
is the lowest resistance path for heat flow. Proper mounting
ensures the best thermal flow from this area of the package to
the heat sink. Use of a thermally conductive material at the
PRODUCT SPECIFICATION
case-to-heat sink interface is recommended. Use a thermally
conductive spacer if the case of the device must be electri-
cally isolated and include its contribution to the total thermal
resistance. The cases of the FAN1585A series are directly
connected to the output of the device.
VIN
3.3V
C1
22µF
U1
FAN1585A
VIN VOUT
+ ADJ
C2
100µF
+
R1
124
VOUT
1.5V
+
C3
100µF
R2
24.9
Figure 14. Application Circuit (FAN1585A)
Table 1. Bill of Materials for Application Circuit for the FAN1585A
Item
Quantity
Manufacturer
Part Number
Description
C1 1
Xicon
L10V22
22µF, 10V Aluminum
C2, C3
2
Xicon
L10V100
100µF, 10V Aluminum
R1 1 Generic
R2 1 Generic
124, 1%
24.9, 1%
U1
1
Fairchild
FAN1585AT
5A Regulator
U1
FAN1585A-1.5
VIN
3.3V
VIN VOUT
+
C1
GND
22µF
VOUT
1.5V
+
C3
100µF
Figure 15. Application Circuit (FAN1585A-1.5)
Table 2. Bill of Materials for Application Circuit for the FAN1585A-1.5
Item
Quantity
Manufacturer
Part Number
Description
C1 1
Xicon
L10V22
22µF, 10V Aluminum
C3 1
Xicon
L10V100
100µF, 10V Aluminum
U1
1
Fairchild
FAN1585AT-1.5 5A Regulator
8 REV. 1.1.5 11/7/03














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