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A7986ATR Datasheet(PDF) 32 Page - STMicroelectronics

No. de pieza A7986ATR
Descripción Electrónicos  3 A step-down switching regulator for automotive applications
PDF  42 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

A7986ATR Datasheet(HTML) 32 Page - STMicroelectronics

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Application information
A7986A
32/42
DocID022801 Rev 5
Figure 22. Junction temperature vs. output
current @ Vin = 24 V
Figure 23. Junction temperature vs. output
current @ Vin = 12 V
VOUT=1.8V
VOUT=3.3V
VOUT=5V
HSOP
VQFN
V
IN=24V
F
SW=250KHz
T
AMB=25 C
VOUT=1.8V
VOUT=3.3V
VOUT=5V
HSOP
VQFN
V
IN=12V
F
SW=250KHz
T
AMB=25 C
Figure 24. Junction temperature vs. output
current @ Vin = 5 V
Figure 25. Efficiency vs. output current @ Vin =
12 V
VOUT=1.2V
VOUT=1.8V
VOUT=3.3V
HSOP
VQFN
V
IN=5V
F
SW=250KHz
T
AMB=25 C
60
65
70
75
80
85
90
95
0.100
0.600
1.100
1.600
2.100
2.600
3.100
Io [A]
Vin=12V
Vin=18V
Vin=24V
Vo=5.0V
FSW=250kHz
Figure 26. Efficiency vs.output current @
Vin =5 V, VO = 3.3 V
Figure 27. Efficiency vs.output current @
Vin =5 V, VO = 1.8 V
50
55
60
65
70
75
80
85
90
95
0.100
0.600
1.100
1.600
2.100
2.600
3.100
Io [A]
Vin=5V
Vin=12V
Vin=24V
Vo=3.3V
FSW=250kHz
40
45
50
55
60
65
70
75
80
85
0.100
0.600
1.100
1.600
2.100
2.600
3.100
Io [A]
Vin=5V
Vin=12V
Vin=24V
Vo=1.8V
FSW=250kHz



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