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A7987 Datasheet(PDF) 25 Page - STMicroelectronics

Part # A7987
Description  61 V, 3 A asynchronous step-down switching regulator with adjustable current limitation for automotive
PDF  36 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

A7987 Datasheet(HTML) 25 Page - STMicroelectronics

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Figure 20. Input quiescent current vs input voltage. No
load
0
1
2
3
6
12
18
24
30
36
42
48
54
60
Input voltage [V]
VBIAS=VOUT
VBIAS=GND
Figure 21. Input shutdown current vs input voltage
0
2
4
6
8
10
12
14
16
6
12
18
24
30
36
42
48
54
60
Input voltage [V]
Figure 22. Load regulation. VOUT = 3.3 V, FSW=500 kHz
3.292000
3.294000
3.296000
3.298000
3.30000
3.302000
3.304000
3.306000
3.308000
3.310000
0.001
0.01
0.1
1
Output current [A]
12V
24V
36V
48V
60V
Figure 23. Line regulation. VOUT = 3.3 V, FSW = 500 kHz
3.290000
3.292000
3.294000
3.296000
3.298000
3.30000
3.302000
3.304000
3.306000
10
15
20
25
30
35
40
45
50
55
60
Input voltage[V]
0A
1A
3A
A7987
Demonstration board
DS12928 - Rev 3
page 25/36



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