LTC3731 Linear Technology, LTC3731 Datasheet - Page 8

• Manufacturer Part Number: LTC3731
• Description: Synchronous Buck Switching Regulator Controller
• Manufacturer: Linear Technology

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