LTC3780
典型性能特性
连续电流模式
（ CCM ，V
IN
= 6V, V
OUT
= 12V)
SW2
10V/DIV
SW2
10V/DIV
T
A
= 25 ℃，除非另有说明。
连续电流模式
（ CCM ，V
IN
= 18V, V
OUT
= 12V)
SW2
10V/DIV
连续电流模式
（ CCM ，V
IN
= 12V, V
OUT
= 12V)
SW1
10V/DIV
V
OUT
100mV/DIV
SW1
10V/DIV
SW1
10V/DIV
V
OUT
100mV/DIV
V
OUT
100mV/DIV
I
L
2A/DIV
V
IN
= 6V
V
OUT
= 12V
5μs/DIV
3780 G10
I
L
2A/DIV
V
IN
= 12V
V
OUT
= 12V
5μs/DIV
3780 G11
I
L
2A/DIV
V
IN
= 18V
V
OUT
= 12V
5μs/DIV
3780 G12
突发模式工作
(V
IN
= 6V, V
OUT
= 12V)
SW2
10V/DIV
SW1
10V/DIV
SW2
10V/DIV
SW1
10V/DIV
突发模式工作
(V
IN
= 12V, V
OUT
= 12V)
SW2
10V/DIV
跳周期模式
(V
IN
= 18V, V
OUT
= 12V)
SW1
10V/DIV
V
OUT
500mV/DIV
I
L
2A/DIV
V
OUT
200mV/DIV
I
L
2A/DIV
V
OUT
100mV/DIV
I
L
1A/DIV
V
IN
= 12V
V
OUT
= 12V
10μs/DIV
3780 G14
V
IN
= 6V
V
OUT
= 12V
25μs/DIV
3780 G13
V
IN
= 18V
V
OUT
= 12V
2.5μs/DIV
3780 G15
非连续电流模式
（ DCM ，V
IN
= 6V, V
OUT
= 12V)
SW2
10V/DIV
SW1
10V/DIV
SW2
10V/DIV
SW1
10V/DIV
V
OUT
100mV/DIV
非连续电流模式
（ DCM ，V
IN
= 12V, V
OUT
= 12V)
SW2
10V/DIV
SW1
10V/DIV
非连续电流模式
（ DCM ，V
IN
= 18V, V
OUT
= 12V)
V
OUT
100mV/DIV
V
OUT
100mV/DIV
I
L
1A/DIV
V
IN
= 12V
V
OUT
= 12V
5μs/DIV
3780 G17
I
L
1A/DIV
V
IN
= 6V
V
OUT
= 12V
5μs/DIV
3780 G16
I
L
2A/DIV
V
IN
= 18V
V
OUT
= 12V
2.5μs/DIV
3780 G18
3780fe
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