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LTC3124 Datasheet(PDF) 21 Page - Linear Technology

Part # LTC3124
Description  15V, 5A 2-Phase Synchronous Step-Up DC/DC Converter with Output Disconnect
PDF  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3124 Datasheet(HTML) 21 Page - Linear Technology

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LTC3124
21
3124f
For more information www.linear.com/LTC3124
APPLICATIONS INFORMATION
Switching Waveforms with 1.5A Load
Transient Response with 700mA to 1.5A Load Step
Figure 8. 1MHz, 5V to 12V, 1.5A Boost Converter
Figure 9. Bode Plot for Example Converter
C1
100nF
VOUT
12V
1.5A
LB
4.7µH
LA
4.7µH
VIN
5V
SWB
CAP
PGNDB
VOUTB
SWA
LTC3124
COUT
22µF
×2
CC
680pF
CF
56pF
3124 F08
CVCC
4.7µF
CIN
10µF
R1
1.02M
R2
113k
RC
84.5k
RT
28k
C1: 100nF, 16V, X5R, 0805
CIN: 10µF, 10V, X5R, 1206
COUT: 22µF ×2, 16V, X5R, 1210
CVCC: 4.7µF, 10V, X5R, 1206
LA, LB: COILCRAFT XAL5030-472ME
OFF ON
VIN
SGND
PWM/SYNC
SD
VCC
FB
RT
VC
PGNDA
VOUTA
BURST PWM
VOUT
20mV/DIV
AC-COUPLED
VSWB
10V/DIV
VSWA
10V/DIV
200ns/DIV
3124 F08b
INDUCTOR B
CURRENT
1A/DIV
INDUCTOR A
CURRENT
1A/DIV
VOUT
500mV/DIV
AC-COUPLED
OUTPUT
CURRENT
500mA/DIV
100µs/DIV
3124 F08c
700mA
700mA
1500mA
FREQUENCY (Hz)
100
1k
–15
0
15
10k
100k
3124 F09
–30
–45
30
45
–90
–45
0
45
–135
–180
90
PHASE
GAIN



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