Table of Contents
Advertisement
CIRCUIT SCHEMATIC
2.25V TO 5.5V
Efficiency and Power Loss vs Load Current
100
90
EFFICIENCY
80
70
60
50
40
30
POWER LOSS
20
10
0
0
1
2
3
4
LOAD CURRENT (A)
V
IN
0.47µF
22µF
OPT
1M
V
249k
IN
100k
0.033µF
3.3pF
15k
330pF
3.0
2.7
2.4
2.1
1.8
1.5
1.2
0.9
0.6
V
= 3.3V
IN
V
= 1.0V
OUT
0.3
f
= 2MHz
OSC
0
5
6
7
8
9
10
dc3043a CS02
Load Transient Response Forced
Continuous Mode
I
OUT
2A/DIV
1V
V
OUT
10mV/DIV
LTC3310-1
3.3V
TO 1V
IN
OUT
LOADSTEP 1.5A TO 7.5A 6A/µs
V
= 0.983V, V
OUTMIN
DEMO MANUAL DC3043A
1µF
1µF
0.47µF
0201
0201
OPT
V
IN
EN
PGOOD
RT
MODE/SYNC
100nH
SW
LTC3310-1
SSTT
V
OUT
V
IN
0.1µF
ITH
AGND
PGND
dc3043a CS01
L = COILCRAFT, XEL4030-101ME
V
(LTC3310S-1, LTC3310-1)
1.10
1.08
1.06
1.04
1.02
1.00
0.98
0.96
0.94
0.92
0.90
0
1
2
dc3043a CS04
10µs/DIV
= 1.018V
OUTMAX
22µF
V
OUT
1V
10A
20
47µF
×7
Load Regulation
OUT
125°C
25°C
–45°C
3
4
5
6
7
8
9
10
I
(A)
LOAD
dc3043a CS03
Rev. 0
5
Advertisement
Table of Contents
