LTC3407A-2 Linear Technology, LTC3407A-2 Datasheet - Page 4

• Manufacturer Part Number: LTC3407A-2
• Description: Dual Synchronous 800mA2.25MHz Step-Down DC/DC Regulator
• Manufacturer: Linear Technology

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