LTC3417 Linear Technology, LTC3417 Datasheet - Page 17

• Manufacturer Part Number: LTC3417
• Description: Dual Synchronous 1.4A/800mA 4MHz Step-Down DC/DC Regulator
• Manufacturer: Linear Technology

APPLICATIO S I FOR ATIO
V
C
OUT1
U
1.8V
1.4A
22µF
OUT1
2.25V TO 5.5V
L1: MIDCOM DUS-5121-1R5R
C
U
OUT1
: KEMET C1210C226K8PAC
C1 22pF
R1 511k
V
IN
Figure 4. 1.8V at 1.4A/2.5V at 800mA Step-Down Regulators
W
412k
R2
2200pF
1.5µH
L1
C
10µF
IN
100
C3
5.9k
95
90
85
80
75
70
R5
0.001
V
V
V
FREQ = 1MHz
REFER TO FIGURE 4
IN
OUT1 Efficiency vs Load Current
IN
OUT
U
= 3.6V
0.1µF
C
= 1.8V
IN1
GNDA
0.01
MODE
SW1
RUN1
V
PHASE
I
TH1
FB1
EFFICIENCY
LOAD CURRENT (A)
V
EXPOSED
LTC3417
IN1
PAD GNDD
V
0.1
IN2
PGOOD
RUN2
FREQ
SW2
V
I
TH2
POWER LOSS
FB2
C
0.1µF
L2: MIDCOM DUS-5121-2R2R
C
IN2
OUT2
1
, C
IN
V
V
R7
100k
IN
IN
: KEMET C1206C106K4PAC
3417 F04a
R6
2.87k
3417 F04
C4
6800pF
2.2µH
10
L2
10
1
0.1
0.01
0.001
R4
412k
R3 866k
C2 22pF
C
10µF
OUT2
www.DataSheet4U.com
V
2.5V
800mA
OUT2
LTC3417
17
3417fb