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LTC3542 Datasheet(PDF) 13 Page - Linear Technology

Part # LTC3542
Description  500mA, 2.25MHz Synchronous Step-Down DC/DC Converter
PDF  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3542 Datasheet(HTML) 13 Page - Linear Technology

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LTC3542
13
3542fa
Figure 3a. Typical Application
Figure 3b. Layout Diagram
Figure 3c. Efficiency Curve
Figure 3d. Load Step
VIN
LTC3542
RUN
R1
75k
*SUMIDA CDRH2D18HD-2R2NC
**TDK C2012X5R0J106M
3542 F03a
R2
150k
CF 22pF
L*
2.2
μH
CIN**
10
μF
COUT**
10
μF
SW
VIN
2.7V TO 5.5V
VOUT
1.8V
500mA
VFB
MODE/SYNC
GND
1
2
3
VFB
R1
VIN
VIN
GND
3542 F03b
CIN
6
5
GND
4
RUN
GND
GND
VIA TO VOUT
MODE/
SYNC
SW
R2
CF
COUT
L
VOUT
OUTPUT CURRENT (mA)
30
90
100
20
10
80
50
70
60
40
0.1
10
100
1000
3542 G17
0
1
VIN = 2.7V
VIN = 3.6V
VIN = 4.2V
VOUT = 1.8V
Burst Mode OPERATION
FIGURE 3a CIRCUIT
VOUT
100mV/DIV
AC COUPLED
IL
500mA/DIV
VIN = 3.6V
VOUT = 1.8V
ILOAD = 0mA TO 500mA
FIGURE 3a CIRCUIT
20
μs/DIV
3542 G06
ILOAD
500mA/DIV
APPLICATIONS INFORMATION



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