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LTC3124 Datasheet(PDF) 24 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) 24 Page - Linear Technology

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LTC3124
24
3124f
For more information www.linear.com/LTC3124
TYPICAL APPLICATIONS
Single Li Cell to 5V, 1.8A Synchronized 1.2MHz Switching Boost
Converter for RFPA Power Supply
C1
100nF
VOUT
5V
1.8A
COUT
22µF
×2
LB
3.3µH
LA
3.3µH
VIN
2.7V TO 4.2V
SWB
CAP
PGNDB
VOUTB
SWA
LTC3124
CC
1.5nF
CF
150pF
3124 TA05a
CVCC
4.7µF
CIN
10µF
2.4MHz SYNC PULSE
R1
1.47M
R2
464k
RC
31.6k
RT
28.7k
C1: 100nF, 16V, X7R, 0805
CIN: 10µF, 10V, X7R, 1206
COUT: 22µF ×2, 16V, X7R, 1210
CVCC: 4.7µF, 10V, X7R, 1206
LA, LB: COILCRAFT MSS7341T-332NL
OFF ON
VIN
SGND
PWM/SYNC
SD
VCC
FB
RT
VC
PGNDA
VOUTA
Efficiency
3.3V to 12V, 300kHz Synchronous Boost Converter
with Output Disconnect, 1A
C1
100nF
VOUT
12V
1A
COUT
47µF
×3
LB
22µH
LA
22µH
VIN
3.3V
SWB
CAP
PGNDB
VOUTB
SWA
LTC3124
CC
3.9nF
CF
270pF
3124 TA04a
CVCC
4.7µF
CIN
10µF
R1
1.02M
R2
113k
RC
76.8k
RT
100k
C1: 100nF, 16V, X5R, 0805
CIN: 10µF, 10V, X5R, 1206
COUT: 47µF ×3, 16V, X5R, 1210
CVCC: 4.7µF, 10V, X5R, 1206
LA, LB: WÜRTH WE-PDF 7447998221
BURST PWM
VIN
SGND
PWM/SYNC
SD
VCC
FB
RT
VC
PGNDA
VOUTA
OFF ON
Efficiency
LOAD CURRENT (mA)
0.01
0.1
40
50
60
70
80
1
10
100
1000
3124 TA04b
30
20
10
0
90
100
PWM
Burst Mode
OPERATION
VCC DERIVED
FROM VIN
VCC DERIVED
FROM VOUT
LOAD CURRENT (mA)
0.01
0.1
40
50
60
70
80
1
10
100
1000
3124 TA05b
30
20
10
0
90
100
PWM
Burst Mode
OPERATION
4.2VIN
3.3VIN
2.7VIN



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