Datasheet

LTC3409
4
3409fc
Effi ciency/Power Lost
vs Load Current, V
OUT
= 1.8V
Effi ciency vs Input Voltage
V
OUT
= 1.2V, Pulse Skip
LOAD CURRENT (mA)
30
EFFICIENCY (%)
90
100
20
10
80
50
70
60
40
0.1 10 100 1000
3409 G01
0
1: 2.5V
IN
, BURST
2: 3.6V
IN
, BURST
3: 4.2V
IN
, BURST
4: 2.5V
IN
, PULSE SKIP
5: 3.6V
IN
, PULSE SKIP
6: 4.2V
IN
, PULSE SKIP
7: POWER LOST, 2.5V
IN
, BURST
8: POWER LOST, 2.5V
IN
, PULSE SKIP
9: POWER LOST, 3.6V
IN
, BURST
10: POWER LOST, 3.6V
IN
, PULSE SKIP
11: POWER LOST, 4.2V
IN
, BURST
12: POWER LOST, 4.2V
IN
, PULSE SKIP
1
1
2
3
6
9
5
4
12
8
7
10
11
POWER LOSS (mW)
1.0
0.1
0.01
0.001
0.0001
INPUT VOLTAGE (V)
1.5
0
EFFICIENCY (%)
10
30
40
50
100
70
2.5
3.5
3409 G02
20
80
90
60
4.5
5.5
I
OUT
= 0.1mA
I
OUT
= 1mA
I
OUT
= 10mA
I
OUT
= 100mA
I
OUT
= 600mA
I
OUT
= 800mA
Effi ciency vs Input Voltage
V
OUT
= 1.2V, Burst Mode Operation
INPUT VOLTAGE (V)
1.5
0
EFFICIENCY (%)
10
30
40
50
100
70
2.5
3.5
3409 G03
20
80
90
60
4.5
5.5
I
OUT
= 0.1mA
I
OUT
= 1mA
I
OUT
= 100mA
I
OUT
= 10mA
I
OUT
= 600mA
I
OUT
= 800mA
Effi ciency vs Load Current
V
OUT
= 2.5V
Effi ciency vs Load Current
V
OUT
= 1.2V
Reference Voltage
vs Temperature
LOAD CURRENT (mA)
30
EFFICIENCY (%)
90
100
20
10
80
50
70
60
40
0.1 10 100 1000
3409 G04
0
1
PULSE SKIP
BURST
2.7V
IN
2.7V
IN
4.2V
IN
4.2V
IN
3.6V
IN
3.6V
IN
LOAD CURRENT (mA)
30
EFFICIENCY (%)
90
100
20
10
80
50
70
60
40
0.1 10 100 1000
3409 G05
0
1
PULSE SKIP
BURST
1.6V
IN
1.6V
IN
3.1V
IN
3.1V
IN
2.5V
IN
2.5V
IN
TEMPERATURE (°C)
–50
REFERENCE VOLTAGE (V)
0.616
0.618
110
3409 G06
0.615
0.614
0.613
0.612
0.611
0.610
0.609
0.608
0.617
–10–30
3010
70 90 130
50
150
(From Typical Application on the front page except for the resistive divider resistor values)
TYPICAL PERFORMANCE CHARACTERISTICS