LT1304/LT1304-3.3/LT1304-5
U
TYPICAL APPLICATIONS
2-Cell to 3.3V Converter Efficiency
2-Cell to 3.3V Boost Converter
L1*
MBRS130L
90
80
70
60
50
22µH
V
SW
IN
3.3V
SENSE
300mA
+
C1**
100µF
LT1304-3.3
2 CELLS
SHDN
C2**
100µF
10V
+
I
GND
LIM
V
IN
V
IN
V
IN
= 3.3V
= 2.5V
= 12.85V
NC
SHUTDOWN
40
*SUMIDA CD54-220
**AVX TPSD107M010R0100
30
1304 TA05
0.1
1
10
100
1000
LOAD CURRENT (mA)
1304 TA06
3.3V SEPIC (Step-Up/Step-Down Converter)
3.3V SEPIC Efficiency
C1**
1µF
80
75
70
65
60
55
50
L1A*
V
IN
2.5V TO 8V
1
2
4
3
†
V
SW
IN
C2
+
47µF
16V
L1B*
MBRS130L
LT1304-3.3
3.3V
300mA
SENSE
GND
SHDN
SHUTDOWN
I
LIM
††
C3
+
100µF
10V
V
V
V
= 4.5V
= 3.5V
= 2.5V
IN
IN
IN
NC
*
COILTRONICS CTX20-1
1
10
100
500
1304 TA07
** TOKIN 1E105ZY5U-C103-F
†
LOAD CURRENT (mA)
AVX TPSD476M016R0150
††
1304 TA08
AVX TPSD107M010R0100
5V SEPIC Efficiency
5V SEPIC (Step-Up/Step-Down Converter)
C1**
1µF
80
75
70
65
60
55
50
L1A*
V
IN
3V TO 8V
1
2
4
3
V
IN
SW
+
†
47µF
16V
L1B*
MBRS130L
LT1304-5
5V
200mA
SENSE
GND
SHDN
SHUTDOWN
I
LIM
V
V
V
V
= 6V
= 5V
= 4V
= 3V
+
IN
IN
IN
IN
††
100µF
10V
NC
*
COILTRONICS CTX20-1
1
10
100
500
1304 TA09
** TOKIN 1E105ZY5U-C103-F
†
LOAD CURRENT (mA)
AVX TPSD476M016R0150
††
1304 TA10
AVX TPSD107M010R0100
11
Linear [ Linear ]
