Datasheet

9
LT1930/LT1930A
TYPICAL APPLICATIO S
U
GND
V
IN
SW
SHDN FB
V
IN
3.3V
4
51
3
D1
L1
5.6µH
2
R1
40.2k
LT1930
1930/A TA07a
C2
10µF
C1
4.7µF
R2
13.3k
V
OUT
5V
480mA
C1: TAIYO-YUDEN X5R JMK212BJ475MG www.t-yuden.com
C2: TAIYO-YUDEN X5R JMK316BJ106ML
D1: ON SEMICONDUCTOR MBR0520 www.onsemi.com
L1: SUMIDA CR43-5R6 www.sumida.com
OFF ON
LOAD CURRENT (mA)
0
EFFICIENCY (%)
65
70
75
300
500
1930/A TA07b
60
55
50
100 200 400
80
85
90
V
IN
= 3.3V
V
IN
= 2.6V
Efficiency
3.3V to 5V Boost Converter
GND
V
IN
SW
SHDN FB
4
51
3
D1
M1
L1
4.7µH
2
R1
60.4k
R2
11.3k
LT1930
1930/A TA06
C1
2.2µF
V
IN
3V to 6V
C2
22µF
C3
47pF
V
OUT
8V
520mA AT V
IN
= 6V
240mA AT V
IN
= 3V
C1: TAIYO-YUDEN X5R LMK432BJ226MM
C2: TAIYO-YUDEN X5R LMK212BJ225MG
D1: ON SEMICONDUCTOR MBR0520
L1: SUMIDA CR43-4R7
M1: SILICONIX Si6433DQ
SHDN
Boost Converter with Reverse Battery Protection
GND
V
IN
SW
SHDN FB
V
IN
5V
4
51
3
D1
L1
2.2µH
2
R1
115k
LT1930A
1930/A TA08a
C2
2.2µF
C1
2.2µF
R2
13.3k
V
OUT
12V
250mA
C1: TAIYO-YUDEN X5R LMK212BJ225MG
C2: TAIYO-YUDEN X5R EMK316BJ225ML
D1: ON SEMICONDUCTOR MBR0520
L1: MURATA LQH3C2R2M24
SHDN
LOAD CURRENT (mA)
0
EFFICIENCY (%)
65
70
75
150
250
1930/A TA08b
60
55
50
50 100 200
80
85
90
300
V
IN
= 5V
V
OUT
= 12V
5V to 12V, 250mA Step-Up Converter
Efficiency