LTC3416 Linear Technology, LTC3416 Datasheet - Page 14

• Manufacturer Part Number: LTC3416
• Description: 4A/ 4MHz/ Monolithic Synchronous Step-Down Regulator
• Manufacturer: Linear Technology

APPLICATIO S I FOR ATIO
LTC3416
PC Board Layout Checklist
When laying out the printed circuit board, the following
checklist should be used to ensure proper operation of the
LTC3416. Check the following in your layout.
1. A ground plane is recommended. If a ground plane layer
2. Connect the (+) terminal of the input capacitor(s), C
14
is not used, the signal and power grounds should be
segregated with all small-signal components returning
to the SGND pin at one point which is then connected to
the PGND pin close to the LTC3416.
as close as possible to the PV
provides the AC current into the internal power MOSFETs.
U
(7a) Top Layer
U
W
IN
pin. This capacitor
3416 F07a
Figure 7. LTC3416 Layout Diagram
U
IN
,
3. Keep the switching node, SW, away from all sensitive
4. Flood all unused areas on all layers with copper. Flood-
5. Connect the V
small-signal nodes.
ing with copper will reduce the temperature rise of
power components. You can connect the copper areas
to any DC net (PV
other DC rail in your system).
The resistor divider must be connected between V
and SGND.
FB
pin directly to the feedback resistors.
(7b) Bottom Layer
IN
, SV
IN
, V
OUT
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, PGND, SGND or any
3416 F07b
OUT
3416f