Datasheet
LTC3731
8
3731fc
TYPICAL PERFORMANCE CHARACTERISTICS
Shed Mode at 1 Amp, Light Load
Current (Circuit of Figure 14)
Continuous Mode at 1 Amp, Light
Load Current (Circuit of Figure 14)
Burst Mode at 1 Amp, Light Load
Current (Circuit of Figure 14)
Transient Load Current Response:
0 Amp to 50 Amp (Circuit of
Figure 14)
Differential Amplifier Gain-Phase
FREQUENCY (MHz)
0001
GAIN (dB)
10
3731 G19
0.01
0.1
1
0
–3
–6
–9
–12
–15
0
–45
–90
–135
–180
–225
PHASE (DEG)
3731 G20
V
IN
= 12V
V
OUT
= 1.5V
V
FCB
= V
CC
FREQUENCY = 250kHz
V
OUT
AC, 20mV/DIV
V
SW1
10V/DIV
V
SW2
10V/DIV
V
SW3
10V/DIV
4µs/DIV
3731 G21
V
IN
= 12V
V
OUT
= 1.5V
V
FCB
= OPEN
FREQUENCY = 250kHz
V
OUT
AC, 20mV/DIV
V
SW1
10V/DIV
V
SW2
10V/DIV
V
SW3
10V/DIV
4µs/DIV
3731 G22
V
IN
= 12V
V
OUT
= 1.5V
V
FCB
= 0V
FREQUENCY = 250kHz
V
OUT
AC, 20mV/DIV
V
SW1
10V/DIV
V
SW2
10V/DIV
V
SW3
10V/DIV
4µs/DIV
3731 G23
V
IN
= 12V
V
OUT
= 1.5V
V
FCB
= V
CC
FREQUENCY = 250kHz
V
OUT
AC, 20mV/DIV
I
LOAD
20A/DIV
20µs/DIV