Datasheet

LTC3419
5
3419fa
V
IN
(V)
2.5
V
OUT
ERROR (%)
0.6
0.4
0
0.2
–0.2
–0.4
–0.6
4.0 5.0
3419 G16
3.0 3.5 4.5 5.5
V
OUT
= 1.8V
I
LOAD
= 100mA
OUTPUT CURRENT (mA)
EFFICIENCY (%)
100
90
80
70
60
50
40
30
20
10
0
0.1 10 100 100
0
3419 G10
1
V
OUT
= 1.2V
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 4.2V
OUTPUT CURRENT (mA)
EFFICIENCY (%)
100
90
80
70
60
50
40
30
20
10
0
0.1 10 100 100
0
3419 G11
1
V
OUT
= 1.8V
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 4.2V
OUTPUT CURRENT (mA)
EFFICIENCY (%)
100
90
80
70
60
50
40
30
20
10
0
0.1 10 100 100
0
3419 G12
1
V
OUT
= 2.5V
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 4.2V
TYPICAL PERFORMANCE CHARACTERISTICS
Effi ciency vs Load Current
Effi ciency vs Load Current Effi ciency vs Load Current
Effi ciency vs Load Current
Load Regulation
Load Regulation
Line Regulation
Start-Up from Shutdown
Start-Up from Shutdown
OUTPUT CURRENT (mA)
EFFICIENCY (%)
100
90
80
70
60
50
40
30
20
10
0
0.1 10 100 100
0
3419 G13
1
V
OUT
= 1.8V
PULSE SKIP MODE
Burst Mode OPERATION
LOAD CURRENT (mA)
0
V
OUT
ERROR (%)
3.0
2.5
1.5
2.0
0.5
1.0
–0.5
0
–1.0
300
3419 G14
100 200 400 600500
V
OUT
= 1.2V
V
OUT
= 1.8V
V
OUT
= 2.5V
Burst Mode OPERATION
LOAD CURRENT (mA)
0
V
OUT
ERROR (%)
2.0
1.5
0.5
1.0
–0.5
0
–1.0
300
3419 G15
100 200 400 600500
Burst Mode OPERATION
PULSE SKIP MODE
V
OUT
= 1.8V
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 0A
RUN
2V/DIV
I
L
500mA/DIV
V
OUT
1V/DIV
250μs/DIV
3419 G17
V
IN
= 3.6V
V
OUT
= 1.8V
R
LOAD
= 3Ω
RUN
2V/DIV
I
LOAD
500mA/DIV
V
OUT
1V/DIV
250μs/DIV
3419 G18
T
A
= 25°C, V
IN
= 3.6V, unless otherwise noted.