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LTC3547B Datasheet(PDF) 4 Page - Linear Technology

Part # LTC3547B
Description  Dual Monolithic 300mA Synchronous Step-Down Regulator
PDF  16 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3547B Datasheet(HTML) 4 Page - Linear Technology

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LTC3547B
4
3547bfb
VIN (V)
2.5
4
3547b G08
0.9
0.8
0.6
3
3.5
4.5
0.5
0.4
1.0
0.7
5
5.5
6
SYNCHRONOUS
SWITCH
MAIN SWITCH
TEMPERATURE (°C)
–50
1.2
1.1
25
3547b G09
0.8
0.6
–25
0
50
0.5
0.4
1.3
1.0
0.9
0.7
75
100
125
MAIN SWITCH
SYNCHRONOUS
SWITCH
VIN = 2.7V
VIN = 3.6V
VIN = 4.2V
OUTPUT CURRENT (mA)
30
90
100
20
10
80
50
70
60
40
0.1
10
100
1000
3547b G10
0
1
VIN = 2.7V
VIN = 3.6V
VIN = 4.2V
VOUT = 1.2V
OUTPUT CURRENT (mA)
30
90
100
20
10
80
50
70
60
40
0.1
10
100
1000
3547b G11
0
1
VIN = 2.7V
VIN = 3.6V
VIN = 4.2V
VOUT = 1.8V
TEMPERATURE (°C)
–50
25
3547b G07
0.5
–0.5
–25
0
50
–1.0
–1.5
1.5
1.0
0
75
100
Reference Voltage
vs Temperature
RDS(ON) vs Input Voltage
RDS(ON) vs Temperature
Efficiency vs Load Current
Efficiency vs Load Current
TYPICAL PERFOR A CE CHARACTERISTICS
TEMPERATURE (°C)
–50
2.5
25
3547b G04
2.2
2.0
–25
0
50
1.9
1.8
2.6
2.4
2.3
2.1
75
100
125
VIN = 4.2V
VIN = 3.6V
VIN = 2.7V
TEMPERATURE (°C)
–50
25
3547b G05
40
20
–25
0
50
10
0
50
30
75
100
125
SYNCHRONOUS
SWITCH
MAIN SWITCH
VIN (V)
2.5
4
3547b G06
400
200
3
3.5
4.5
100
0
500
300
5
5.5
6
SYNCHRONOUS
SWITCH
MAIN SWITCH
Oscillator Frequency
vs Temperature
Switch Leakage vs Temperature
Switch Leakage vs Input Voltage



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