LTC3401 Linear Technology, LTC3401 Datasheet - Page 14

• Manufacturer Part Number: LTC3401
• Description: 1A/ 3MHz Micropower Synchronous Boost Converter
• Manufacturer: Linear Technology

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