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A7986ATR 数据表(PDF) 33 Page - STMicroelectronics

部件名 A7986ATR
功能描述  3 A step-down switching regulator for automotive applications
PDF  42 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

A7986ATR 数据表(HTML) 33 Page - STMicroelectronics

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DocID022801 Rev 5
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A7986A
Application information
Figure 28. Load regulation
Figure 29. Line regulation
3.305
3.310
3.315
3.320
3.325
3.330
3.335
3.340
3.345
3.350
0.00
0.50
1.00
1.50
2.00
2.50
3.00
Io [A]
Vin=5V
Vin=12V
Vin=24V
3.3200
3.3250
3.3300
3.3350
3.3400
3.3450
3.3500
3.3550
3.3600
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
VIN [V]
Io=1A
Io=2A
Io=3A
Figure 30. Load transient: from 0.4 A to 2 A
Figure 31. Soft-start
V
OUT
200mV/div
AC coupled
I
L 1A/div
Time base 200us/div
V
IN=24V
V
OUT=3.3V
C
OUT=47uF
L=10uH
F
SW=520k
I
L 1A/div
V
OUT 1V/div
Time base 1ms/div
I
L 0.5A/div
V
OUT 0.5V/div
Time base 1ms/div
I
L 1A/div
V
OUT 1V/div
Time base 1ms/div
I
L 0.5A/div
V
OUT 0.5V/div
Time base 1ms/div
Figure 32. Short-circuit behavior VIN=12 V
Figure 33. Short-circuit behavior VIN=24 V
OUT
5V/div
I
L
1A/div
V
OUT
1V/div
SYNCH
5V/div
Timebase 10us/div
OUT
5V/div
I
L
1A/div
V
OUT
1V/div
SYNCH
5V/div
Timebase 10us/div
OUT
5V/div
I
L
1A/div
V
OUT
1V/div
SYNCH
5V/div
Timebase 10us/div
OUT
5V/div
I
L
1A/div
V
OUT
1V/div
SYNCH
5V/div
OUT
5V/div
I
L
1A/div
V
OUT
1V/div
SYNCH
5V/div
OUT
5V/div
I
L
1A/div
V
OUT
1V/div
SYNCH
5V/div
Timebase 10us/div



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