Datasheet

15
LTC1433/LTC1434
TYPICAL APPLICATIONS N
U
Highest Efficiency 3.3V/5V Converter
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
SSW
NC
BSW
NC
SGND
RUN/SS
LBO
LBI
PWRV
IN
PGND
SV
IN

C
OSC

POR
I
TH

V
OSENSE

V
PROG
LTC1433
68µF**
20V
0.1µF
0.1µF
100µF*
10V
D1:MOTOROLA MBRS0520LT3
D2:MOTOROLA MBRS130LT3
L1: COILCRAFT DT1608C SERIES
L2: SUMIDA CD54 SERIES

V
OUT
D1
L2
22µH
POWER-ON
RESET
V
IN
3.5V TO 12.5V FOR V
OUT
= 3.3V
6V TO 12.5V FOR V
OUT
= 5V
V
PROG
= 0V, V
OUT
= 3.3V
V
PROG
= V
IN
, V
OUT
= 5V
100pF
5.1k
100k
6800pF
1433/34 TA02
D2
L1
100µH
680pF
* AVX TPSD107M010R0100
** AVX TPSE686M020R0150
+
+
Positive-to-Negative –5V Converter
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
SSW
NC
BSW
NC
SGND
RUN/SS
LBO
LBI
PWRV
IN
PGND
SV
IN

C
OSC

POR
I
TH

V
OSENSE

V
PROG
LTC1433
100µF**
16V
0.1µF
0.01µF
100µF*
10V
D1:MOTOROLA MBRS130LT3
L1: COILCRAFT DO3316 SERIES
V
OUT
–5V
D1
V
IN
3.5V TO 7.5V
100pF
5.1k
6800pF
1433/34 TA03
680pF
* AVX TPSD107M010R0100
** AVX TPSE107M016R0100
L1
68µH
V
IN
(V)
3.0
4.0
5.0
6.0
7.0
7.5
I
OUT(MAX)
(mA)
180
240
290
340
410
420
+
+