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LTC3547B Datasheet(PDF) 5 Page - Linear Technology

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

LTC3547B Datasheet(HTML) 5 Page - Linear Technology

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LTC3547B
5
3547bfb
LOAD CURRENT (mA)
0
150
3547b G13
0.8
0.6
0.2
50
100
200
0
–0.2
1.2
1.O
0.4
250
300
350
PULSE SKIP MODE
OPERATION
VIN = 3.6V
VOUT = 1.2V
VOUT = 1.8V
VOUT = 2.5V
VIN (V)
2.5
4
3547b G14
0.4
0.2
–0.2
3
3.5
4.5
–0.4
–0.6
0.6
0
5
5.5
VOUT = 1.8V
ILOAD = 100mA
OUTPUT CURRENT (mA)
30
90
100
20
10
80
50
70
60
40
0.1
10
100
1000
3547b G12
0
1
VIN = 2.7V
VIN = 3.6V
VIN = 4.2V
VOUT = 2.5V
200μs/DIV
IL
100mA/DIV
RUN
2V/DIV
VOUT
1V/DIV
3547b G15
VIN = 3.6V
VOUT = 1.8V
ILOAD = 0A
Efficiency vs Load Current
Load Regulation
Line Regulation
Start-Up From Shutdown
Start-Up From Shutdown
Load Step
Load Step
Load Step
TYPICAL PERFOR A CE CHARACTERISTICS
250μs/DIV
IL
200mA/DIV
RUN
2V/DIV
VOUT
1V/DIV
3547b G16
VIN = 3.6V
VOUT = 1.8V
ILOAD = 300mA
10μs/DIV
IL
200mA/DIV
ILOAD
200mA/DIV
VOUT,
AC-COUPLED
100mV/DIV
3547b G19
VIN = 3.6V
VOUT = 1.8V
ILOAD = 50mA TO 300mA
10μs/DIV
IL
200mA/DIV
ILOAD
200mA/DIV
VOUT,
AC-COUPLED
100mV/DIV
3547b G18
VIN = 3.6V
VOUT = 1.8V
ILOAD = 20mA TO 300mA
10μs/DIV
IL
200mA/DIV
ILOAD
200mA/DIV
VOUT,
AC-COUPLED
100mV/DIV
3547b G17
VIN = 3.6V
VOUT = 1.8V
ILOAD = 0mA TO 300mA



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