Datasheet
13
LTC3402
3402fb
3
10
2
6
1
3404 TA05a
LTC3402
V
IN
SHDN
MODE/SYNC
PGOOD
R
t
SW
V
OUT
FB
V
C
GND
4
7
8
9
5
C3
470pF
C4
20pF
1
CELL
C1
3.3μF
R3
1M
R5
39k
R2
866k
R1
619k
D1
V
OUT
3V
500mA
L1
2.2μH
C2
10μF
C1: TAIYO YUDEN JMK212BJ335MG
C2: TAIYO YUDEN JMK325BJ106MM
D1: ON SEMICONDUCTOR MBRM120T3
L1: COILCRAFT DO1608-222
V
IN
= 0.9V TO 1.5V
0 = FIXED FREQUENCY
1 = Burst Mode OPERATION
R
t
10k
+
R4
5.1M
TYPICAL APPLICATIO S
U
Single Cell to 3V at 500mA, All Ceramic Capacitor, 3MHz Step-Up Converter
Efficiency
OUTPUT CURRENT (mA)
20
EFFICIENCY (%)
40
50
70
90
0.1 10 100 1000
3402 TA05b
0
1
60
30
10
80
Burst Mode
OPERATION
3MHz FIXED
FREQUENCY
Li-Ion to 5V at 300mA, 1MHz Step-Up Converter
Efficiency
3
10
2
6
1
3402 TA07a
LTC3402
V
IN
SHDN
MODE/SYNC
PGOOD
R
t
SW
V
OUT
FB
V
C
GND
4
7
8
9
5
C3
470pF
C4
4.7pF
Li-Ion
C1
4.7μF
R3
1M
R5
82k
R
t
30.1k
R2
1.65M
R1
549k
D1*
V
OUT
5V
600mA
L1
10μH
C2*
22μF
*LOCATE COMPONENTS AS CLOSE TO
IC AS POSSIBLE
C1: TAIYO YUDEN JMK212BJ475MG
C2: TAIYO YUDEN JMK325BJ226MM
D1: ON SEMICONDUCTOR MBRM120T3
L1: SUMIDA CDH53-100
V
IN
= 2.5V TO 4.2V
0 = FIXED FREQUENCY
1 = Burst Mode OPERATION
LOAD CURRENT (mA)
0.1
0
EFFICIENCY (%)
10
30
40
50
100
70
3402 G10
20
80
90
60
110
100
1000
1MHz
FIXED
FREQUENCY
Burst Mode OPERATION
V
IN
= 3.6V