Datasheet

15
LTC1474/LTC1475
TYPICAL APPLICATIONS
U
1474/75 F12
V
IN
GND
SENSE
LBI
RUN
V
FB
LBO
SW
LTC1474
6
3
8
1
2
5
7
4
100k
4.7M
1%
RUN
22µF**
16V
V
IN
3.5V TO 6V
536k
1%
10pF
L*
200µH
L*
200µH
D1
MBR0530
+
+
+
22µF
††
25V
22µF
††
25V
10µF
†
25V
+
V
OUT
12V
70mA
V
OUT
–12V
70mA
MBR0530
* COILTRONICS CTX200-4
** AVX TPSC226M016
†
AVX TPSC106M025
††
AVX TPSD226M025
0.1µF
V
IN
(V) I
LOAD(MAX)
3.5 30mA
4 50mA
5 70mA
6 90mA
Figure 12. 5V to ±12V Regulator
Figure 13. 5V Buck-Boost Converter
1474/75 F13
V
IN
GND
SENSE
LBI
RUN
V
OUT
LBO
SW
LTC1474-5
6
3
8
1
2
5
7
4
100k
RUN
10µF**
25V
0.1µF
V
IN
3.5V TO 12V
L*
100µH
L*
100µH
D1
MBR0530
+
+
+
33µF
†
10V
10µF**
25V
V
OUT
5V
200mA AT V
IN
= 10V
* COILTRONICS CTX100-4
** AVX TPSC106MO25
†
AVX TPSC336M010
V
IN
(V) I
LOAD(MAX)
3.5 70mA
4 95mA
5 125mA
8 180mA
10 200mA
12 225mA