LTC3728L LINER [Linear Technology], LTC3728L Datasheet - Page 30

• Manufacturer Part Number: LTC3728L
• Description: Dual, 550kHz, 2-Phase Synchronous Regulators
• Manufacturer: LINER [Linear Technology]

LTC3728L/LTC3728LX
TYPICAL APPLICATIO S
30
V
V
IN
OUT
180pF
180pF
100pF
100pF
0.1 F
8.06k
4.75k
: 7V TO 28V
20k
1%
10k
20k
1%
: 5V, 4A/3.3V, 5A
0.01 F
0.1 F
1500pF
1000pF
63.4k
Figure 13. LTC3728L/LTC3728LX 5V/4A, 3.3V/5A Regulator with External Frequency Synchronization
105k
1%
1%
1000pF
1000pF
1000pF
SWITCHING FREQUENCY = 250kHz TO 550kHz
M1, M2: FDS6982S OR VISHAY Si4810DY
3.3V
f
SYNC
U
RUN/SS1
SENSE1
SENSE1
V
PLLFLTR
PLLIN
FCB
I
SGND
3.3V
I
V
SENSE2
SENSE2
TH1
TH2
LTC3728L/LTC3728LX
OSENSE1
OSENSE2
OUT
+
–
–
+
RUN/SS2
BOOST1
BOOST2
EXTV
PGOOD
INTV
PGND
SW1
SW2
BG1
BG2
TG1
TG2
V
CC
CC
IN
L1, L2: SUMIDA CDEP105-4R3MC-88
OUTPUT CAPACITORS: PANASONIC SP SERIES
1 F
CMDSH-3TR
0.1 F
V
(<7V)
PGOOD
CMDSH-3TR
PULL-UP
4.7 F, 10V
0.1 F
PIN 4
PIN 4
0.1 F
10
M1
M2
Q1
Q3
1 F 50V
1 F 50V
4.3 H
4.3 H
22 F
50V
L1
L2
Q2
Q4
150 F, 6.3V
0.008
0.008
180 F, 4V
3728 F13
V
5V/4A
GND
V
7V TO
28V
V
3.3V/5A
OUT1
IN
OUT2
3728lxfa