Datasheet

LTC3411
6
3411fb
TYPICAL PERFORMANCE CHARACTERISTICS
Load Regulation
Line Regulation Frequency vs V
IN
1 10 100 1000 10000
LOAD CURRENT (mA)
V
OUT
ERROR (%)
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
3411 G07
Burst Mode
OPERATION
PULSE SKIP
FORCED
CONTINUOUS
V
IN
= 3.3V
V
OUT
= 2.5V
2 3 4 5 6
V
IN
(V)
V
OUT
ERROR (%)
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
3411 G08
V
OUT
= 1.8V
T
A
= 25°C
I
OUT
= 1.25A
I
OUT
= 400mA
2 3 4 5 6
V
IN
(V)
FREQUENCY VARIATION (%)
10
8
6
4
2
0
–2
–4
–6
–8
–10
3411 G09
V
OUT
= 1.8V
I
OUT
= 1.25A
T
A
= 25°C
Frequency Variation
vs Temperature
Effi ciency vs Frequency R
DS(ON)
vs V
IN
–50 –25 0 25 50 75 100 125
TEMPERATURE (°C)
REFERENCE VARIATION (%)
10
8
6
4
2
0
–2
–4
–6
–8
–10
3411 G10
FREQUENCY (MHz)
0
85
EFFICIENCY (%)
90
95
100
12
3411 G11
34
V
IN
= 3.3V
V
OUT
= 2.5V
I
OUT
= 500mA
T
A
= 25°C
2.5 3 3.5 4 4.5 5 5.5 6
V
IN
(V)
R
DS(ON)
(mΩ)
120
115
110
105
100
95
90
3411 G12
MAIN SWITCH
SYNCHRONOUS SWITCH
T
A
= 25°C