Datasheet

LT3502/LT3502A
14
3502fd
applications inForMation
Figure 5
V
IN
BD
GND
SW
DA
BOOST
V
IN
LT3502
(5a)
V
OUT
V
BOOST
– V
SW
≅ V
OUT
MAX V
BOOST
≅ V
IN
+ V
OUT
3502 F05a
V
IN
BD
GND
SW
DA
BOOST
V
IN
V
DD
LT3502
(5b)
V
OUT
V
BOOST
– V
SW
≅ V
DD
MAX V
BOOST
≅ V
IN
+ V
DD
3502 F05b
Figure 4. Transient Load Response of the LT3502A with Different Output Capacitors
as the Load Current is Stepped from 150mA to 400mA. V
IN
= 12V, V
OUT
= 3.3V, L = 6.8µH
10µFFB
32.4k
I
L
0.2A/DIV
V
OUT
0.1V/DIV
AC COUPLED
I
L
0.2A/DIV
V
OUT
0.1V/DIV
AC COUPLED
10µs/DIV
10µs/DIV
I
L
0.2A/DIV
V
OUT
0.1V/DIV
AC COUPLED
10µs/DIV
10k
V
OUT
3502 F04a
3502 F04b
3502 F04c
FB
V
OUT
32.4k
10k
10µF
×2
50pF
SANYO
4TPB100M
FB
V
OUT
+
32.4k
10k
100µF