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LTC3121 데이터시트(PDF) 20 Page - Linear Technology

부품명 LTC3121
상세설명  15V, 1.5A Synchronous Step-Up DC/DC Converter with Output Disconnect
PDF  26 Pages
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제조업체  LINER [Linear Technology]
홈페이지  http://www.linear.com
Logo LINER - Linear Technology

LTC3121 데이터시트(HTML) 20 Page - Linear Technology

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LTC3121
20
3121fa
For more information www.linear.com/LTC3121
Single Li-Cell to 6V, 2.5W, 3MHz Synchronous Boost Converter for RF Transmitter
3121 TA03a
VIN
SD
PWM/SYNC
RT
VCC
VOUT
CAP
FB
VC
LTC3121
SGND
PGND
RC
137k
CC
150pF
SW
L1
2.2µH
R2
121k
R1
487k
CF
12pF
CVCC
4.7µF
C1
100nF
COUT
47µF
VOUT
6V
425mA
RT
17.4k
VIN
2.5V TO 4.2V
CIN
4.7µF
ON
OFF
CIN, CVCC: 4.7µF, 6.3V, X7R, 1206
C1: 100nF, 6.3V, X7R, 1206
COUT: 47µF, 10V, X7R, 1812
L1: COILCRAFT XAL5030-222ME
100µs/DIV
40mA
420mA
3121 TA03b
OUTPUT
CURRENT
200mA/DIV
VOUT
200mV/DIV
AC-COUPLED
VIN = 3.6V
Typical applicaTions
3121 TA02a
VIN
SD
PWM/SYNC
RT
VCC
VOUT
CAP
FB
VC
LTC3121
SGND
PGND
RC
280k
CC
220pF
SW
L1
3.3µH
R2
113k
R1
1.02M
CF
10pF
CVCC
4.7µF
C1
100nF
COUT
22µF
VOUT
12V
250mA
RT
28k
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: 22µF, 16V, X7R, 1812
L1: COILCRAFT XAL5050-332ME
3.3V to 12V, 2MHz Synchronous Boost Converter with Output Disconnect, 250mA
LOAD CURRENT (mA)
0.01
100
80
90
60
40
30
70
50
20
10
0
10
1
0.1
10
100
0.1
3121 TA02b
1
PWM
Burst Mode OPERATION
PWM POWER LOSS



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