LTC3411 Linear Technology, LTC3411 Datasheet - Page 16

• Manufacturer Part Number: LTC3411
• Description: 1.25A/ 4MHz/ Synchronous Step-Down DC/DC Converter
• Manufacturer: Linear Technology

LTC3411
TYPICAL APPLICATIO S
16
2.63V TO
5.5V
V
IN
FC
NOTE: IN DROPOUT, THE OUTPUT TRACKS THE INPUT VOLTAGE
C1, C2: TAIYO YUDEN JMK325BJ226MM
L1: TOKO A914BYW-2R2M (D52LC SERIES)
SGND
PS
BM
22 F
RS2
C1
1M
Figure 7. General Purpose Buck Regulator Using Ceramic Capacitors
PGND
RS1
1M
13k
R3
U
SGND
C3
1000pF
SV
SYNC/MODE
I
TH
100
IN
95
90
85
80
75
70
65
60
SGND
1
LTC3411
OPERATION (BM)
PV
PULSE SKIP
(PS)
Burst Mode
Efficiency vs Load Current
IN
PGND
GND
SHDN/R
10
PGOOD
LOAD CURRENT (mA)
SW
V
FB
T
SGND
FORCED
CONTINUOUS (FC)
100
R5
100k
R4
324k
PGOOD
3.3V
1000
R1A
280k
V
V
f
O
IN
OUT
= 1MHz
= 3.3V
= 2.5V
2.5V
3411 F07b
R1B
412k
10000
1.8V
R1C
698k
R2 887K
C4 22pF
2.2 H
L1
PGND
3411 F07a
C2
22 F
V
1.8V/2.5V/3.3V
AT 1.25A
OUT
sn3411 3411fs