LT1304 データシートの表示（PDF） - Linear Technology
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LT1304 Datasheet PDF : 16 Pages
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TYPICAL APPLICATIONS
2-Cell to 3.3V Boost Converter
L1*
22µH
MBRS130L
+
2 CELLS
C1**
100µF
VIN
SW
SENSE
LT1304-3.3
SHDN
ILIM
GND
SHUTDOWN NC
*SUMIDA CD54-220
**AVX TPSD107M010R0100
3.3V
300mA
+ C2**
100µF
10V
1304 TA05
VIN
2.5V TO 8V
SHUTDOWN
3.3V SEPIC (Step-Up/Step-Down Converter)
L1A*
C1**
1µF
2
1
+ C2†
47µF
16V
VIN
SW
LT1304-3.3
SHDN
ILIM
SENSE
GND
NC
4
L1B*
MBRS130L
3
3.3V
300mA
+ C3††
100µF
10V
*COILTRONICS CTX20-1
**TOKIN 1E105ZY5U-C103-F
† AVX TPSD476M016R0150
†† AVX TPSD107M010R0100
1304 TA07
LT1304/LT1304-3.3/LT1304-5
2-Cell to 3.3V Converter Efficiency
90
80
70
60
50
40
30
0.1
VIN = 3.3V
VIN = 2.5V
VIN = 21.58V
1
10
100
LOAD CURRENT (mA)
1000
1304 TA06
3.3V SEPIC Efficiency
80
75
70
65
60
55
VIN = 4.5V
VIN = 3.5V
VIN = 2.5V
50
1
10
100
500
LOAD CURRENT (mA)
1304 TA08
VIN
3V TO 8V
SHUTDOWN
5V SEPIC (Step-Up/Step-Down Converter)
L1A*
C1**
1µF
2
1
+ 47µF†
16V
VIN
SW
LT1304-5
4
L1B*
3
SHDN
SENSE
ILIM
GND
+
NC
MBRS130L
5V
200mA
100µF††
10V
*COILTRONICS CTX20-1
**TOKIN 1E105ZY5U-C103-F
†AVX TPSD476M016R0150
†† AVX TPSD107M010R0100
1304 TA09
5V SEPIC Efficiency
80
75
70
65
60
VIN = 6V
55
VIN = 5V
VIN = 4V
VIN = 3V
50
1
10
100
500
LOAD CURRENT (mA)
1304 TA10
11
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