LT1615/LT1615-1
TYPICAL APPLICATIO S
2-Cell to 3.3V Boost Converter
V
IN
1.5V TO 3V
L1
4.7µH
5
V
IN
LT1615
4
C1
4.7µF
SHDN
GND
2
(408) 573-4150
(408) 573-4150
(814) 237-1431
(800) 441-2447
1615/-1 TA03
D1
1
SW
3
604k
1M
C2
22µF
3.3V
60mA
4.7pF
EFFICIENCY (%)
FB
C1: TAIYO YUDEN LMK316BJ475
C2: TAIYO YUDEN JMK325BJ226
L1: MURATA LQH3C4R7M24
D1: MOTOROLA MBR0520
1-Cell Li-Ion to 3.3V SEPIC Converter
L1
10µH
5
V
IN
LT1615
4
C1
4.7µF
SHDN
GND
2
(408) 573-4150
(408) 573-4150
(408) 573-4150
(814) 237-1431
(800) 441-2447
1615/-1 TA07
C3
1µF
1
SW
3
V
IN
2.5V TO 4.2V
FB
C1: TAIYO YUDEN LMK316BJ475
C2: TAIYO YUDEN JMK316BJ106
C3: TAIYO YUDEN JMK107BJ105
L1, L2: MURATA LQH3C100K24
D1: MOTOROLA MBR0520
PIN Diode Driver
V
IN
1V TO 6V
L1
22µH
5
V
IN
LT1615-1
4
C1
4.7µF
SHDN
GND
2
(408) 573-4150
(408) 573-4150
(814) 237-1431
(800) 441-2447
1615/-1 TA09
D1
1
SW
3
365k
10M
C2
1µF
C1
4.7µF
4
35V
500µA
V
IN
1V TO 1.5V
5
V
IN
FB
C1: TAIYO YUDEN EMK316BJ475
C2: TAIYO YUDEN GMK316BJ105
L1: MURATA LQH3C220K24
D1: MOTOROLA MBR0540
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
U
2-Cell to 3.3V Converter Efficiency
90
85
80
75
70
65
60
55
50
0.1
1
10
LOAD CURRENT (mA)
100
1615/-1 TA03a
V
IN
= 3V
V
IN
= 1.5V
4-Cell to 5V SEPIC Converter
L1
10µH
5
V
IN
C2
10µF
LT1615
4
C1
4.7µF
SHDN
GND
2
(408) 573-4150
(408) 573-4150
(408) 573-4150
(814) 237-1431
(800) 441-2447
1615/-1 TA07
D1
3.3V
100mA
4.7pF
L2
10µH
1M
V
IN
3V TO 6V
C3
1µF
1
SW
3
D1
5V
100mA
4.7pF
L2
10µH
1M
C2
10µF
324k
FB
604k
C1: TAIYO YUDEN LMK316BJ475
C2: TAIYO YUDEN JMK316BJ106
C3: TAIYO YUDEN JMK107BJ105
L1, L2: MURATA LQH3C100K24
D1: MOTOROLA MBR0520
1-Cell to 3.3V Boost Converter
L1
22µH
1
SW
LT1615-1
SHDN
GND
2
(408) 573-4150
(408) 573-4150
(814) 237-1431
(516) 435-1110
1615/-1 TA04
D1
3.3V
15mA
4.7pF
1M
3
604k
C2
10µF
FB
C1: TAIYO YUDEN LMK316BJ475
C2: TAIYO YUDEN JMK316BJ106
L1: MURATA LQH3C220K24
D1: CENTRAL SEMICONDUCTOR CMDSH-3
7
LINER [ LINEAR TECHNOLOGY ]
