ltc3612 Linear Technology Corporation, ltc3612 Datasheet - Page 24

• Manufacturer Part Number: ltc3612
• Description: 3a, 4mhz Monolithic Synchronous Step-down Dc/dc Converter
• Manufacturer: Linear Technology Corporation

LTC3612
TYPICAL APPLICATIONS
24
100
2.25V TO 5.5V
90
80
70
60
50
40
30
20
10
0
1
Effi ciency vs Output Current
V
IN
10
OUTPUT CURRENT (mA)
R
4.7M
SS
C
10nF
SS
100
C
470pF
General Purpose Buck Regulator Using Ceramic Capacitors, 2.25MHz
C2
22μF
C
15k
R
C
1000
V
V
V
V
C1
22μF
C
10pF
IN
IN
IN
IN
C1
= 2.5V
= 3.3V
= 4V
= 5.5V
3612 TA02b
10000
PGOOD
R5A
1M
R5B
1M
L1: VISHAY IHLP-1616BZ-01 0.47μH
R4
100k
R
24Ω
F
C
1μF
F
RUN
TRACK/SS
RT/SYNC
PGOOD
ITH
MODE
200mV/DIV
SV
IN
1A/DIV
LTC3612
V
OUT
I
L
PV
V
V
I
V
OUT
IN
OUT
MODE
PV
V
IN_DRV
FB
Load Step Forced Continuous Mode
SGND
PGND
= 3.3V
IN
DDR
= 100mA TO 3A
R2
196k
= 1.8V
SW
= 1.5V
470nH
L1
392k
22pF
R1
C3
50μs/DIV
3612 TA02a
C
47μF
O1
C
22μF
O2
3612 TA02c
V
1.8V
3A
OUT
3612f