參數(shù)資料
型號： FAN1582
廠商： Fairchild Semiconductor Corporation
英文描述： 3A Adjustable/Fixed Ultra Low Dropout Linear Regulator(3安培電流輸出固定的超低壓差線性穩(wěn)壓器)
中文描述： 第3A可調(diào)/固定超低壓差線性穩(wěn)壓器（3安培電流輸出固定的超低壓差線性穩(wěn)壓器）
文件頁數(shù)： 7/12頁
文件大小： 66K
代理商： FAN1582
PRODUCT SPECIFICATION
FAN1582
7
P
Assumptions:
V
in
= 3.6V worst case
V
OUT
= 1.47V worst case
I
OUT
= 3A continuous
T
A
= 70°C
Θ
Case-to-Ambient
= 5°C/W (assuming both a heatsink and
a thermally conductive material)
The power dissipation in this application is:
P
D
= (V
IN
- V
OUT
) * (I
OUT
) = (3.6-1.47) * (3) = 6.39W
From the specification table,
T
J
= T
A
+ (P
D
) * (
Θ
Case-to-Ambient +
Θ
JC
)
= 70 + (6.39) * (5 + 3) = 121°C
The junction temperature is below the maximum rating.
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
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.
Figure 3. Application Circuit (FAN1582)
Table 1. Bill of Materials for Application Circuit for the FAN1582
Item
C1, C3
C2
C4
R1
R2
U1
Quantity
2
1
1
1
1
1
Manufacturer
Xicon
Xicon
Any
Generic
Generic
Fairchild
Part Number
L10V10
L10V100
Description
10μF, 10V Aluminum
100μF, 10V Aluminum
1μF Ceramic
86.6
, 1%
124
, 1%
3A Regulator
FAN1582T
100
μ
F
C2
10
μ
F
C3
V
CNTL
= 5V
2.1V at 3A
V
IN
= 3.3V
+
10
μ
F
C1
1
μ
F
C4
+
V
IN
V
SENSE
V
CNTL
Adj
V
OUT
FAN1582
86.6
124
R2
R1
U1
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