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LT8494 Datasheet(PDF) 5 Page - Linear Technology

Part # LT8494
Description  SEPIC/Boost DC/DC Converter with 2A, 70V Switch, and 7關A Quiescent Current
PDF  26 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT8494 Datasheet(HTML) 5 Page - Linear Technology

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LT8494
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8494fa
For more information www.linear.com/LT8494
TYPICAL PERFORMANCE CHARACTERISTICS
Switch Current Limit at 500kHz
Switch Current Limit at Minimum
Duty Cycle
Switch VCESAT
Minimum Switch On-Time
Feedback Voltage
Oscillator Frequency
TA = 25°C unless otherwise specified.
TEMPERATURE (°C)
–50
140
120
80
40
100
60
20
0
50
8494 G13
150
0
100
TEMPERATURE (°C)
–50
180
160
140
120
80
40
100
60
20
0
50
8494 G14
150
0
100
TEMPERATURE (°C)
–50
1.5
0.5
1.0
0.0
50
8494 G11
150
0
100
RT = 68.1k
RT = 324k
1200
1000
600
400
200
800
0
8494 G12
FB VOLTAGE (V)
0
1.0
0.7
1.2
0.5
0.2
RT = 68.1k
RT = 324k
Frequency Foldback
Minimum Switch Off-Time
DUTY CYCLE (%)
10
20
30
40
50
60
70
80
90
0.0
0.5
1.0
1.5
2.0
2.5
3.0
8494 G06
TEMPERATURE (°C)
–50
3.0
2.0
1.0
2.5
1.5
0.5
0
50
8494 G07
150
0
100
SWITCH CURRENT (A)
0
600
400
200
500
300
100
0
1.0
8494 G08
2.0
0.5
1.5
TEMPERATURE (°C)
–50
1.23
1.21
1.19
1.22
1.20
1.18
50
8494 G09
150
0
100
Transient Load Response, Load
Current is Stepped from 300mA
to 500mA
FRONT PAGE APPLICATION
VIN = 12V
VOUT = 5V
500µs/DIV
8494 G19
VOUT
50mV/DIV
IL
0.5A/DIV



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