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| LTC3780_12 Datasheet, PDF (7/28 Pages) Linear Technology – High Effi ciency, Synchronous, 4-Switch Buck-Boost Controller | |||
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LTC3780
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted.
Continuous Current Mode
(CCM, VIN = 6V, VOUT = 12V)
SW2
10V/DIV
SW1
10V/DIV
VOUT
100mV/DIV
Continuous Current Mode
(CCM, VIN = 12V, VOUT = 12V)
SW2
10V/DIV
SW1
10V/DIV
VOUT
100mV/DIV
Continuous Current Mode
(CCM, VIN = 18V, VOUT = 12V)
SW2
10V/DIV
SW1
10V/DIV
VOUT
100mV/DIV
IL
2A/DIV
VIN = 6V
VOUT = 12V
5μs/DIV
3780 G10
IL
2A/DIV
VIN = 12V
VOUT = 12V
5μs/DIV
3780 G11
IL
2A/DIV
VIN = 18V
VOUT = 12V
5μs/DIV
3780 G12
Burst Mode Operation
(VIN = 6V, VOUT = 12V)
SW2
10V/DIV
SW1
10V/DIV
VOUT
500mV/DIV
IL
2A/DIV
VIN = 6V
VOUT = 12V
25μs/DIV
Burst Mode Operation
(VIN = 12V, VOUT = 12V)
SW2
10V/DIV
SW1
10V/DIV
VOUT
200mV/DIV
IL
2A/DIV
3780 G13
VIN = 12V
VOUT = 12V
10μs/DIV
Skip-Cycle Mode
(VIN = 18V, VOUT = 12V)
SW2
10V/DIV
SW1
10V/DIV
VOUT
100mV/DIV
3780 G14
IL
1A/DIV
VIN = 18V
VOUT = 12V
2.5μs/DIV
3780 G15
Discontinuous Current Mode
(DCM, VIN = 6V, VOUT = 12V)
SW2
10V/DIV
SW1
10V/DIV
Discontinuous Current Mode
(DCM, VIN = 12V, VOUT = 12V)
SW2
10V/DIV
SW1
10V/DIV
Discontinuous Current Mode
(DCM, VIN = 18V, VOUT = 12V)
SW2
10V/DIV
SW1
10V/DIV
VOUT
100mV/DIV
IL
1A/DIV
VIN = 6V
VOUT = 12V
5μs/DIV
VOUT
100mV/DIV
3780 G16
IL
2A/DIV
VIN = 12V
VOUT = 12V
5μs/DIV
VOUT
100mV/DIV
3780 G17
IL
1A/DIV
VIN = 18V
VOUT = 12V
2.5μs/DIV
3780 G18
3780fe
7
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