LTC3412A Linear Technology, LTC3412A Datasheet - Page 15

• Manufacturer Part Number: LTC3412A
• Description: 3A/ 4MHz/ Monolithic Synchronous Step-Down Regulator
• Manufacturer: Linear Technology

APPLICATIO S I FOR ATIO
3. Keep the switching node, SW, away from all sensitive
small signal nodes.
4. Flood all unused areas on all layers with copper. Flood-
ing with copper will reduce the temperature rise of power
components. You can connect the copper areas to any DC
net (PV
in your system).
IN
, SV
IN
, V
OUT
U
, PGND, SGND, or any other DC rail
PGOOD
U
C
Top
ITH
**
Figure 4. 3.3V to 2.5V, 3A Regulator at 1MHz, Burst Mode Operation
*
330pF X7R
VISHAY IHLP-2525CZ-01
TDK 4532X5R0J107M
115k
2.2M
R
R3
SS
W
17.4k
R
ITH
47pF
R
100k
C
1000pF X7R
C
PG
SS
C
R
Figure 3. LTC3412A Layout Diagram
69.8k
294k
R2
OSC
U
1
2
3
4
5
6
7
8
SV
PGOOD
I
V
R
SYNC/MODE
RUN
SGND
TH
FB
T
IN
C
FF
LTC3412A
22pF X5R
R1 392k
EFE
5. Connect the V
The resistor divider must be connected between V
and SGND.
PGND
PGND
PV
PV
SW
SW
SW
SW
IN
IN
16
15
14
13
12
11
10
9
X5R 6.3V
22μF
C
IN2
3412 F04
FB
C
22μF
IN1
0.47μH
pin directly to the feedback resistors.
L1*
Bottom
GND
C
100μF
×2
V
2.5V
3A
OUT
OUT
**
www.DataSheet4U.com
C
100μF
V
3.3V
IN3
IN
**
LTC3412A
15
3412afc
OUT