LTC3780
TA = 25°C, unless otherwise noted.
TYPICAL PERFORMANCE CHARACTERISTICS
Continuous Current Mode
(CCM, VIN = 6V, VOUT = 12V)
Continuous Current Mode
(CCM, VIN = 12V, VOUT = 12V)
Continuous Current Mode
(CCM, VIN = 18V, VOUT = 12V)
SW2
10V/DIV
SW2
10V/DIV
SW2
10V/DIV
SW1
10V/DIV
SW1
10V/DIV
SW1
10V/DIV
V
OUT
V
OUT
V
100mV/DIV
OUT
100mV/DIV
100mV/DIV
I
I
I
L
L
L
2A/DIV
2A/DIV
2A/DIV
3780 G10
3780 G11
3780 G12
V
V
= 6V
5μs/DIV
V
V
= 12V
5μs/DIV
IN
OUT
V
V
= 18V
5μs/DIV
IN
OUT
IN
OUT
= 12V
= 12V
= 12V
Burst Mode Operation
(VIN = 6V, VOUT = 12V)
Burst Mode Operation
(VIN = 12V, VOUT = 12V)
Skip-Cycle Mode
(VIN = 18V, VOUT = 12V)
SW2
10V/DIV
SW2
10V/DIV
SW2
10V/DIV
SW1
10V/DIV
SW1
10V/DIV
SW1
10V/DIV
V
V
OUT
OUT
V
OUT
500mV/DIV
200mV/DIV
100mV/DIV
I
L
I
L
2A/DIV
2A/DIV
I
L
1A/DIV
3780 G14
3780 G15
3780 G13
V
V
= 12V
10μs/DIV
V
V
= 18V
2.5μs/DIV
V
V
= 6V
25μs/DIV
IN
OUT
IN
OUT
IN
OUT
= 12V
= 12V
= 12V
Discontinuous Current Mode
(DCM, VIN = 6V, VOUT = 12V)
Discontinuous Current Mode
(DCM, VIN = 12V, VOUT = 12V)
Discontinuous Current Mode
(DCM, VIN = 18V, VOUT = 12V)
SW2
10V/DIV
SW2
10V/DIV
SW2
10V/DIV
SW1
10V/DIV
SW1
10V/DIV
SW1
10V/DIV
V
V
OUT
OUT
V
OUT
100mV/DIV
100mV/DIV
100mV/DIV
I
L
1A/DIV
I
I
L
L
1A/DIV
2A/DIV
3780 G17
3780 G18
3780 G16
V
V
= 12V
5μs/DIV
V
V
= 18V
2.5μs/DIV
V
V
= 6V
5μs/DIV
IN
OUT
IN
OUT
IN
OUT
= 12V
= 12V
= 12V
3780fe
7
Linear Systems [ Linear Systems ]
