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LTC3122 Datasheet(PDF) 20 Page - Linear Technology

Part # LTC3122
Description  15V, 2.5A Synchronous Step-Up DC/DC Converter with Output Disconnect
PDF  26 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3122 Datasheet(HTML) 20 Page - Linear Technology

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LTC3122
20
3122fa
For more information www.linear.com/LTC3122
Typical applicaTions
3.3V to 12V, 300kHz Synchronous Boost Converter with Output Disconnect, 500mA
USB/Battery Powered Synchronous Boost Converter, 4.3V to 5V, 1A
3122 TA04a
VIN
SD
PWM/SYNC
RT
VCC
VOUT
CAP
FB
VC
LTC3122
SGND
PGND
RC
154k
CC
1.2nF
SW
L1
10µH
R2
113k
R1
1.02M
CF
56pF
CVCC
4.7µF
C1
100nF
COUT
68µF
VOUT
12V
500mA
RT
196k
VIN
3.3V
CIN
4.7µF
ON
OFF
PWM
BURST
CIN, CVCC: 4.7µF, 6.3V, X7R, 1206
C1: 100nF, 6.3V, X7R, 1206
COUT: 68µF, 16V, X7R, 1812
L1: COILCRAFT MSS1048-103MLB
3122 TA05a
VIN
SD
PWM/SYNC
RT
VCC
VOUT
CAP
FB
VC
LTC3122
SGND
PGND
RC
43.2k
CC
1nF
SW
L1
3.3µH
R2
121k
R1
383k
CF
68pF
CVCC
4.7µF
C1
100nF
COUT
100µF
VOUT
5V
1A
RT
57.6k
VIN
4.3V TO 5.5V
CIN
4.7µF
C2
4.7µF
ON
OFF
CIN, CVCC: 4.7µF, 6.3V, X7R, 1206
C1: 100nF, 6.3V, X7R, 1206
COUT: 100µF, 6.3V, X7R, 1812
C2: LELON VE-4R7M1ATR-0305
L1: TDK SPM6530T-3R3M
LOAD CURRENT (mA)
0.01
100
80
90
60
40
30
70
50
20
10
0
10
1
0.1
0.01
10
100
0.1
3122 TA04b
1
PWM
Burst Mode OPERATION
PWM POWER LOSS
2ms/DIV
3122 TA05b
INPUT
CURRENT
0.5A/DIV
VOUT
2V/DIV
VIN
2V/DIV
RLOAD = 20Ω
VIN = USB 2.0
PORT HOTPLUGGED



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