Datasheet

LTC3412A
15
3412afe
ApplicAtions inForMAtion
3. Keep the switching node, SW, away from all sensitive
small-signal nodes.
4. F
lood all unused areas on all layers with copper. Flooding
with copper will reduce the temperature rise of power
components. You can connect the copper areas to any
DC net (PV
IN
, SV
IN
, V
OUT
, PGND, SGND, or any other
DC rail in your system).
5. Connect
the V
FB
pin directly to the feedback resistors.
The resistor divider must be connected between V
OUT
and SGND.
Figure 4. 3.3V to 2.5V, 3A Regulator at 1MHz, Burst Mode Operation
Figure 3. LTC3412A Layout Diagram
Top Bottom
8
SGND
C
SS
1000pF X7R
C
C
47pF
*
**
VISHAY IHLP-2525CZ-01
TDK 4532X5R0J107M
7
R
SS
2.2M
RUN
6
SYNC/MODE
R
OSC
294k
5
R
T
R2
69.8k
4
R3
115k
V
FB
R
ITH
17.4k
3
C
ITH
330pF X7R
I
TH
2
PGOODPGOOD
1
SV
IN
9
PV
IN
10
SW
11
SW
12
PGND
LTC3412A
EFE
13
L1*
0.47µH
PGND
14
SW
15
SW
16
PV
IN
C
IN2
22µF
X5R 6.3V
C
IN1
22µF
C
OUT
**
100µF
×2
V
OUT
2.5V
3A
V
IN
3.3V
GND
3412 F04
R1 392k
C
IN3
**
100µF
R
PG
100k
C
FF
22pF X5R