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A7987 数据表(PDF) 24 Page - STMicroelectronics

部件名 A7987
功能描述  61 V, 3 A asynchronous step-down switching regulator with adjustable current limitation for automotive
PDF  36 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

A7987 数据表(HTML) 24 Page - STMicroelectronics

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Reference
Part
Package
Note
Manufacturer P/N
R6
1 k
0603
1% tolerance
R7
7.5 k
0603
1% tolerance
R8
47 k
0603
1% tolerance
R10
0
0805
R11
2.4 k
0603
1% tolerance
R1, R9, R13
N.M.
L1
10 uH
5x5 mm
4.9 A sat/ 41 mΩ
COILCRAFT XAL5050-103
L2
N.M.
D1
STPS3L60
SMB
60 V-3 A Schottky rectifier
ST STPS3L60U-Y
U1
A7987
HTSSOP16
ST A7987
Figure 16. Demonstration board layout (top)
Figure 17. Demonstration board layout (bottom)
Figure 18. Efficiency vs output current VOUT = 3.3 V, FSW =
500 kHz
0
10
20
30
40
50
60
70
80
90
100
0.001
0.01
0.1
1
Output current [A]
12V
24V
36V
48V
60V
Figure 19. Junction temperature increase vs output
current TAMB = 25 °C
0
20
40
60
80
100
120
0.5
1
1.5
2
2.5
3
Output current [A]
12V
24V
36V
48V
60V
A7987
Demonstration board
DS12928 - Rev 3
page 24/36



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