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LTC3401 Datasheet(PDF) 14 Page - Linear Technology

Part # LTC3401
Description  1A, 3MHz Micropower Synchronous Boost Converter
PDF  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3401 Datasheet(HTML) 14 Page - Linear Technology

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14
LTC3401
3401fa
Li-Ion to 5V at 300mA, 1MHz Step-Up Converter
Efficiency
TYPICAL APPLICATIO S
3
10
2
6
1
3404 TA07a
LTC3401
VIN
SHDN
MODE/SYNC
PGOOD
Rt
SW
VOUT
FB
VC
GND
4
7
8
9
5
C3
470pF
C4
4.7pF
Li-Ion
C1
4.7
µF
R3
1M
R5
82k
Rt
30k
R2
1.65M
R1
549k
D1*
VOUT
5V
300mA
L1
10
µH
C2*
22
µF
*LOCATE COMPONENTS AS CLOSE TO
IC AS POSSIBLE
C1: TAIYO YUDEN JMK212BJ475MG
C2: TAIYO YUDEN JMK325BJ226MM
D1: ON SEMICONDUCTOR MBRM120T3
L1: SUMIDA CDC5023-100
VIN = 2.5V TO 4.2V
0 = FIXED FREQUENCY
1 = Burst Mode OPERATION
LOAD CURRENT (mA)
0.1
0
10
30
40
50
100
70
3401 TA07b
20
80
90
60
110
100
1000
1MHz
FIXED
FREQUENCY
Burst Mode OPERATION
VIN = 3.6V
High Efficiency, Compact CCFL Supply with Remote Dimming
3
10
2
6
1
3404 TA08
LTC3401
VIN
SHDN
MODE/SYNC
PGOOD
Rt
SW
VOUT
FB
VC
GND
4
7
8
9
5
C5
1
µF
C4
0.1
µF
Li-Ion
C1
10
µF
R5
1M
Rt
150k
R2
10k
R3
1k
R4
20k
D4
D1
D2
D3
Q1
Q2
C2
0.22
µF
T1
1
10
2
3
4
5
6
C3
27pF
1kV
CCFL
DIMMING
INPUT
0V TO 2.5V
VIN = 2.5V TO 4.2V
R1
300
Ω
L1
33
µF
C1: TAIYO YUDEN JMK212BJ106MG
C2: PANASONIC ECH-U
D1: ZETEX ZHCS-1000
D2 TO D4: 1N4148
CCFL BACKLIGHT APPLICATION CIRCUITS
CONTAINED IN THIS DATA SHEET ARE
COVERED BY U.S. PATENT NUMBER 5408162
AND OTHER PATENTS PENDING
L1: SUMIDA CD-54-330MC
Q1, Q2: ZETEX FMMT-617
T1: SUMIDA C1Q122



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