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LTC3642EMS8E-3.3-PBF Datasheet(PDF) 4 Page - Linear Technology

Part # LTC3642EMS8E-3.3-PBF
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

LTC3642EMS8E-3.3-PBF Datasheet(HTML) 4 Page - Linear Technology

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LTC3642
4
3642f
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency vs Load Current
Line Regulation
Load Regulation
Feedback Comparator Voltage vs
Temperature
Feedback Comparator Hysteresis
vs Temperature
Peak Current Trip Theshold vs
Temperature
Peak Current Trip Threshold
vs RISET
Quiescent Supply Current vs
Input Voltage
Quiescent Supply Current vs
Temperature
VIN VOLTAGE (V)
5
–0.30
–0.20
–0.10
0
0.10
15
25
35
45
3642 G02
0.20
0.30
10
20
30
40
ILOAD = 25mA
FIGURE 10 CIRCUIT
LOAD CURRENT (mA)
0
5.01
5.03
5.05
40
3642 G03
4.99
4.97
5.00
5.02
5.04
4.98
4.96
4.95
10
20
30
50
VIN = 10V
FIGURE 10 CIRCUIT
ISET OPEN
TEMPERATURE (°C)
–40
4.4
4.6
4.8
5.0
5.2
5.6
–10
20
50
80
3642 G05
110
5.4
VIN = 10V
TEMPERATURE (°C)
–40
0
20
10
30
50
40
70
60
80
90
–10
20
80
50
3642 G06
110
130
120
110
100
ISET OPEN
ISET = GND
RISET = 500k
VIN = 10V
RSET (kΩ)
0
10
30
50
70
90
200
400
600
800
1000
3642 G07
1200
110
20
40
60
80
100
120
VIN = 10V
VIN VOLTAGE (V)
5
10
12
14
SLEEP
45
3642 G08
8
6
15
25
35
4
2
0
SHUTDOWN
TEMPERATURE (°C)
–40
10
12
14
SLEEP
110
3642 G09
8
6
–10
20
50
80
4
2
0
SHUTDOWN
VIN = 10V
LOAD CURRENT (mA)
0.1
80
90
100
1
10
100
3642 G01
70
75
85
95
65
60
FIGURE 10 CIRCUIT
ISET OPEN
VOUT = 5V
VIN = 10V
VIN = 45V
VIN = 15V
VIN = 24V
VIN = 36V
TEMPERATURE (°C)
–40
0.798
0.799
0.800
0.801
–10
20
50
80
3642 G04
110
VIN = 10V


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