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MIC28512 Datasheet(PDF) 11 Page - Microchip Technology

Part # MIC28512
Description  70V, 2A Synchronous Buck Regulator
PDF  34 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MIC28512 Datasheet(HTML) 11 Page - Microchip Technology

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 2016 Microchip Technology Inc.
DS20005524A-page 11
MIC28512
FIGURE 2-25:
48V Input Thermal Derating
(MIC28512-1).
FIGURE 2-26:
Switching Frequency vs.
Input Voltage (MIC28512-1).
FIGURE 2-27:
VIN Soft Start Turn-On
MIC28512-2.
FIGURE 2-28:
VIN Shutdown
(MIC28512-2).
FIGURE 2-29:
Enable Turn-On Delay and
Rise Time (MIC28512-2).
FIGURE 2-30:
Enable Turn-Off Delay and
Rise Time (MIC28512-2).
0.0
0.5
1.0
1.5
2.0
2.5
25
40
55
70
85
100
AMBIENT TEMPERATURE (°C)
5.0V
3.3V
VIN =48V
f
SW = 300kHz
T
Jmax =125°C
Θ
JA = 30°C/W
500
510
520
530
540
550
560
570
580
590
600
7.0
16.0
25.0
34.0
43.0
52.0
61.0
70.0
INPUT VOLTAGE (V)
Time (4ms/div)
LX
(2A/div)
V
IN
(10V/div)
V
SW
(10V/div)
V
OUT
(5V/div)
V
IN = 12V
V
OUT = 5V
I
OUT = 2A
Time (2ms/div)
I
LX
(2A/div)
V
IN
(10V/div)
V
SW
(10V/div)
V
OUT
(5V/div)
V
IN = 12V
V
OUT = 5V
I
OUT = 2A
Time (2μs/div)
I
L
(1A/div)
V
EN
(2V/div)
V
OUT
(2V/div)
V
IN = 12V
V
OUT = 5V
I
OUT = 2A
Time (2ms/div)
I
L
(1A/div)
V
EN
(2V/div)
V
OUT
(2V/div)
V
IN = 12V
V
OUT = 5V
I
OUT = 2A



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