Datasheet

LTC3619B
5
3619bfb
Typical perForMance characTerisTics
T
A
= 25°C, V
IN
= 5V, unless otherwise noted.
Efficiency vs Load Current Efficiency vs Load Current Efficiency vs Load Current
Efficiency vs Load Current Load Regulation Load Regulation
Line Regulation Start-Up from Shutdown Start-Up from Shutdown
OUTPUT CURRENT (A)
EFFICIENCY (%)
3619B G10
100
90
80
70
60
50
40
30
20
10
0
0.0001 0.1 10.010.001
V
OUT
= 3.3V
CHANNEL 1
V
IN
= 3.6V
V
IN
= 4.2V
V
IN
= 5V
OUTPUT CURRENT (A)
EFFICIENCY (%)
3619B G11
100
90
80
70
60
50
40
30
20
10
0
0.0001 0.1 10.010.001
V
OUT
= 3.3V
CHANNEL 2
V
IN
= 3.6V
V
IN
= 4.2V
V
IN
= 5V
OUTPUT CURRENT (A)
EFFICIENCY (%)
3619B G12
100
90
80
70
60
50
40
30
20
10
0
0.0001 0.1 10.010.001
V
OUT
= 1.2V
CHANNEL 1
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 4.2V
V
IN
= 5V
OUTPUT CURRENT (A)
EFFICIENCY (%)
3619B G13
100
90
80
70
60
50
40
30
20
10
0
0.0001 0.1 10.010.001
V
OUT
= 1.2V
CHANNEL 2
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 4.2V
V
IN
= 5V
LOAD CURRENT (mA)
V
OUT
ERROR (%)
3619B G14
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
0 300 400200100
CHANNEL 1
V
OUT
= 1.8V
V
OUT
= 2.5V
V
OUT
= 3.3V
LOAD CURRENT (mA)
V
OUT
ERROR (%)
3619B G15
3.0
2.5
2.0
1.5
1.0
0.5
0
–0.5
–1.0
0 300 400 500 600 700 800200100
CHANNEL 2
V
OUT
= 1.8V
V
OUT
= 2.5V
V
OUT
= 3.3V
V
IN
(V)
V
OUT
ERROR (%)
3619B G16
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
2.5 3.0 3.5 4.0 4.5 5.0 5.5
V
OUT
= 1.8V
I
LOAD
= 100mA
V
IN
= 5V, V
OUT
= 3.3V
R
LOAD
= 7Ω
C
LOAD
= 4.7µF
3619B G17
RUN
2V/DIV
I
L
250mA/DIV
V
OUT
1V/DIV
200µs/DIV
V
IN
= 5V, V
OUT
= 3.4V
R
L
= NO LOAD, C
L
= 4.4mF
C
LIM
= 2200pF, I
LIM
= 500mA
3619B G18
RUN
2V/DIV
I
IN
500mA/DIV
V
OUT
2V/DIV
R
LIM
1V/DIV
2ms/DIV
CHANNEL 2