LTC3714 Linear, LTC3714 Datasheet - Page 25

• Manufacturer Part Number: LTC3714
• Description: Wide Operating Range / Step-Down Controller with Internal Op Amp
• Manufacturer: Linear

APPLICATIO S I FOR ATIO
These items are also illustrated in Figures 10 and 11.
• Segregate the signal and power grounds. All small
• Place M2 as close to the controller as possible, keeping
• Connect the input capacitor(s) C
signal components should return to the SGND pin at
one point which is then tied to the PGND pin close to the
source of M2.
the PGND, BG and SENSE traces short.
MOSFETs. This capacitor carries the MOSFET AC
current.
U
U
V
IN
Figure 11. General Layout of External Power Components
W
C
C
C
C
IN
IN
IN
IN
IN
close to the power
M1
M1
U
L1
SW
M2
M2
M2
D1
• Keep the high dV/dT SW, BOOST and TG nodes away
• Connect the INTV
• Connect the top driver boost capacitor C
• Connect the V
• VID0-VID4 interface circuitry must return to SGND.
C
from sensitive small-signal nodes.
to the INTV
BOOST and SW pins.
the V
OUT
C
SENSE
OUT
IN
R
SENSE
and PGND pins.
C
OUT
PGND
CC
C
PGND
IN
OUT
and PGND pins.
pin decoupling capacitor C
CC
V
decoupling capacitor C
OUT
TO PGND
(PIN 2)
TO SENSE
(PIN 3)
3714 F11
LTC3714
B
closely to the
F
VCC
closely to
25
closely
3714f