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| LTC3124_15 Datasheet, PDF (25/28 Pages) Linear Technology – 15V, 5A 2-Phase Synchronous Step-Up DC/DC Converter with Output Disconnect | |||
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TYPICAL APPLICATIONS
1.8V to 5.5V Input to 15V Output, 500kHz Synchronous Boost
Converter with Output Disconnect, 300mA
VIN
1.8V TO 5.5V
LB
10µH
LA
10µH
SWB
CAP
PGNDB VOUTB
SWA
VOUTA
LTC3124
PGNDA
C1
100nF
COUT
22µF
Ã2
VOUT
15V
300mA
CIN
10µF
VIN
SGND
PWM/SYNC SD
VCC
FB
RT
VC
CVCC
4.7µF RT
57.6k
C1: 100nF, 16V, X7R, 0805
CIN: 10µF, 10V, X7R, 1206
COUT: 22µF à 2, 16V, X7R, 1210
CVCC: 4.7µF, 10V, X7R, 1206
LA, LB: WÃRTH WE-HCI 7443251000
OFF ON
RC
49.9k
CC
3.3nF
R1
1.3M
CF
100pF
R2
113k
3124 TA06a
LTC3124
Efficiency
100
OUTPUT CURRENT = 300mA
95
90
85
80
75
1.5 2 2.5 3 3.5 4 4.5 5 5.5
VIN (V)
3124 TA06b
Single Li Cell to 12V, 1MHz Synchronous Boost Converter
with Output Disconnect, 800mA
VIN
2.7V TO 4.2V
LB
5.6µH
SWB
CAP
LA
5.6µH
PGNDB VOUTB
SWA
VOUTA
LTC3124
PGNDA
VIN
SGND
CIN
10µF
PWM/SYNC SD
VCC
FB
RT
VC
CVCC
4.7µF RT
28k
C1: 100nF, 16V, X7R, 0805
CIN: 10µF, 10V, X7R, 1206
COUT: 22µF à 2, 16V, X7R, 1210
CVCC: 4.7µF, 10V, X7R, 1206
LA, LB: COILCRAFT XAL5050-562ME
C1
100nF
COUT
22µF
Ã2
VOUT
12V
800mA
OFF ON
RC
88.7k
CC
680pF
R1
1.02M
R2
113k
CF
47pF
3124 TA08
For more information www.linear.com/LTC3124
3124f
25
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