Datasheet

LTC3407A-2
4
3407a2f
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Oscillator Frequency vs
Temperature
Oscillator Frequency vs Supply
Voltage
Efficiency vs Input Voltage
INPUT VOLTAGE (V)
2
0
EFFICIENCY (%)
10
30
40
50
100
100mA
1mA
70
3
4
3407A2 G04
20
80
90
60
5
6
10mA
V
OUT
= 1.8V
CIRCUIT OF FIGURE 3
800mA
T
A
= 25°C unless otherwise specified.
Load Step
3407A2 G03
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 50mA TO 600mA
CIRCUIT OF FIGURE 3
V
OUT2
100mV/DIV
V
OUT1
200mV/DIV
I
L
500mA/DIV
I
LOAD
500mA/DIV
20μs/DIV
Burst Mode Operation
3407A2 G01
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 50mA
CIRCUIT OF FIGURE 3
SW
5V/DIV
V
OUT
50mV/DIV
I
L
200mA/DIV
2μs/DIV
Pulse Skipping Mode
3407A2 G02
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 50mA
CIRCUIT OF FIGURE 3
SW
5V/DIV
V
OUT
10mV/DIV
I
L
100mA/DIV
1μs/DIV
3407A2 G16
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 500mA
CIRCUIT OF FIGURE 4
V
IN
2V/DIV
V
OUT1
1V/DIV
I
L
500mA/DIV
1ms/DIV
Soft Start
2.5
2.4
2.3
2.2
2.1
2.0
FREQUENCY (MHz)
TEMPERATURE (°C)
–50 25 75
3407A2 G05
–25 0
50 100 125
V
IN
= 3.6V
10
8
6
4
2
0
–2
–4
–6
–8
–10
FREQUENCY DEVIATION (%)
SUPPLY VOLTAGE (V)
2
3407A2 G06
3
456