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LTC3544B Datasheet(PDF) 15 Page - Linear Technology

Part # LTC3544B
Description  Quad Synchronous Step-Down Regulator
PDF  18 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3544B Datasheet(HTML) 15 Page - Linear Technology

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LTC3544B

3544bfb
applicaTions inForMaTion
16
4
1
L2
4.7µH
L1
10µH
L4
4.7µH
C6
20pF
C9
4.7µF
C10
4.7µF
C5
20pF
C8
20pF
C2
4.7µF
C1
4.7µF
VOUT1
1.2V
C4
4.7µF
3544B F05a
VOUT2
2.5V
R3
93.1k
VOUT2
1.5V
VSUPPLY
3.6V
VOUT3
0.8V
R4
107k
R1
59k
R2
118k
R7
162k
R8
76.8k
3
5
2
12
15
7
13
11
9
8
10
14
6
L3
4.7µH
C7
20pF
C3
4.7µF
R5
0
R6
100k
RUN200B
VCC
LTC3544B
PVIN
GNDA
17
GNDA
PGND
SW200B
SW200A
VFB200B
VFB200A
RUN200A
RUN100
SW100
SW300
VFB100
VFB300
RUN300
Figure 5
LOAD CURRENT (A)
30
90
100
20
10
80
50
70
60
40
0.0001
0.01
0.1
1
3544B F05b
0
0.001
VIN = 2.7V
VIN = 3.6V
VIN = 4.2V
VOUT = 2.5V
TA = 25°C
Efficiency vs Output Current—300mA Channel,
All Other Channels Off
Transient Response
VOUT300
100mV/DIV
AC-COUPLED
IL
250mA/DIV
ILOAD
250mA/DIV
20µs/DIV
VIN = 3.6V
VOUT = 2.5V
TA = 25°C
LOAD STEP = 300µA TO 300mA
3544B F05c



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