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LTC3642EDD-5-TRPBF Datasheet(PDF) 5 Page - Linear Technology

Part # LTC3642EDD-5-TRPBF
Description  High Effi ciency, High Voltage 50mA Synchronous Step-Down Converter
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3642EDD-5-TRPBF Datasheet(HTML) 5 Page - Linear Technology

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LTC3642
5
3642f
TYPICAL PERFORMANCE CHARACTERISTICS
Switch On-Resistance vs
Input Voltage
Switch On-Resistance vs
Temperature
Switch Leakage Current vs
Temperature
Efficiency vs Input Voltage
Run Comparator Thresholds vs
Temperature
Internal Soft-Start Time vs
Temperature
Soft-Start Waveforms
Operating Waveforms
Load Step Transient Response
VIN VOLTAGE (V)
0
0
0.5
1.5
2.0
2.5
20
40
50
4.5
3642 G10
1.0
10
30
TOP
BOTTOM
3.0
3.5
4.0
TEMPERATURE (°C)
–40
3
4
5
80
3642 G11
2
1
0
–10
20
50
110
BOTTOM
VIN = 10V
TOP
TEMPERATURE (°C)
0
0.2
0.4
0.6
0.1
0.3
0.5
–10
20
50
80
3642 G12
110
–40
VIN = 45V
SW = 0V
SW = 45V
TEMPERATURE (°C)
–40
1.00
1.05
1.10
1.15
1.20
1.30
–10
20
50
80
3642 G14
110
1.25
RISING
FALLING
TEMPERATURE (°C)
–40
0.90
0.95
1.00
1.05
1.10
1.20
–10
20
50
80
3642 G15
110
1.15
OUTPUT
VOLTAGE
1V/DIV
INDUCTOR
CURRENT
50mA/DIV
500μs/DIV
VIN = 10V
CSS = 0.047μF
ISET OPEN
FIGURE 10 CIRCUIT
4632 G16
OUTPUT
VOLTAGE
50mV/DIV
SWITCH
VOLTAGE
5V/DIV
INDUCTOR
CURRENT
50mA/DIV
10μs/DIV
VIN = 10V
ISET OPEN
FIGURE 10 CIRCUIT
4632 G17
OUTPUT
VOLTAGE
25mV/DIV
LOAD
CURRENT
25mA/DIV
1ms/DIV
VIN = 10V
ISET OPEN
FIGURE 10 CIRCUIT
4632 G18
INPUT VOLTAGE (V)
10
65
70
75
80
85
90
95
15
20
25
30
35
40
3642 G13
45
FIGURE 10 CIRCUIT
ISET OPEN
ILOAD = 50mA
ILOAD = 10mA
ILOAD = 1mA


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