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LTC7825AVPBF 数据表(PDF) 6 Page - Analog Devices

部件名 LTC7825AVPBF
功能描述  Fully Integrated 24V/12A Switched Capacitor DC/DC Converter with Overvoltage and Overcurrent Protections
PDF  19 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

LTC7825AVPBF 数据表(HTML) 6 Page - Analog Devices

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LTC7825
6
Rev. A
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS
VLOW and VOUT Load Regulation
16VIN Voltage Divider in Figure 4
Efficiency and Power Loss vs Load
12VIN Voltage Divider in Figure 4
Load Transient 0A–5A–0A 12V to
6V Divider in Figure 3
Soft Start-Up 12V to 6V Divider
RUN Pin Float
Overcurrent Fault Trigger Current
vs HYS_PGRM Voltage in Figure 3
TA = 25°C, unless otherwise noted.
VLOW and VOUT Load Regulation
12VIN Voltage Divider in Figure 4
Input Overvoltage Protection with the
External MOSFET and OVG Control
Top Case Temperature
vs Load Current (No Airflow)
fSW = 1MHz
VLOW
VOUT
LOAD CURRENT (A)
0
1
2
3
4
5
6
7
8
9 10
7.6
7.7
7.8
7.9
8.0
8.1
78251 G10
EFFICIENCY
POWER LOSS
fSW = 1MHz
LOAD CURRENT (A)
0
1
2
3
4
5
6
7
8
9 10
90
91
92
93
94
95
96
97
98
99
100
0
1
2
3
4
5
78251 G11
fSW = 1MHz
VLOW
VOUT
LOAD CURRENT (A)
0
1
2
3
4
5
6
7
8
9 10
5.6
5.7
5.8
5.9
6.0
6.1
12Vin Voltage Divider in Figure 4
78251 G12
fSW = 600kHz
20µs/DIV
78251 G13
VHIGH
200mV/DIV
AC-COUPLED
VOUT
200mV/DIV
AC-COUPLED
IOUT
5A/DIV
5ms/DIV
78251 G14
VHIGH
5V/DIV
SWH
5V/DIV
VOUT
5V/DIV
TIMER
1V/DIV
500µs/DIV
OVG
10V/DIV
VHIGH
10V/DIV
SWH
10V/DIV
FAULT
5V/DIV
78251 G16
fSW = 600kHz
VIN = 12V
HYS_PRGM PIN VOLTAGE (V)
0
0.5
1
1.5
2
2.0
4.0
6.0
8.0
10.0
12.0
14.0
HYS_PGRM Voltage in Figure 3
78251 G17
VIN = 16V
FIG3, fSW = 600kHz
FIG4, fSW = 1MHz
LOAD CURRENT (A)
0
1
2
3
4
5
6
7
8
9 10
20
30
40
50
60
70
80
78251 G18



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