LTC3458
典型PERFOR一个CE特征
同步操作在1.33MHz
SW
5V/DIV
SYNC
2V/DIV
I
L
200mA/DIV
COMP
500mV/DIV
I
L
0.5A/DIV
0mA
500ns/DIV
V
IN
= 3.3V
V
OUT
= 5V
R
Z
= 33K
CC1 = 270pF
CC2 = 10pF的
C
OUT
= 22F
200s/DIV
0mA
V
IN
= 3.3V
V
OUT
= 7V
R
OSC
= 200k
突发模式工作10mA至
50毫安负载阶跃
V
OUT
200mV/DIV
BURST
500mV/DIV
负载
50mA
V
OUT
200mV/DIV
I
L
200mA/DIV
V
IN
= 3.3V
V
OUT
= 5V
L = 10μH
C
OUT
= 22F
10mA至200mA的电流步骤
显示UV旅行
V
OUT
200mV/DIV
–4%
I
L
200mA/DIV
200s/DIV
6
ü W
FF模式100-300mA负载阶跃
V
OUT
200mV/DIV
L = 10μH
F = 1MHz的
自动模式下10mA至100mA的电流
步
BURST
1V/DIV
负载
100mA
10mA
10mA
I
L
200mA/DIV
200s/DIV
500s/DIV
V
IN
= 3.3V
V
OUT
= 5V
L = 10μH
C
BURST
= 0.015F
R
BURST
= 133k
强制爆FF模式
开关与负载50毫安
V
OUT
200mV/DIV
固定
频率
BURST
V
IN
= 3.3V
V
OUT
= 5V
L = 10μH
C
BURST
= 0.015F
R
BURST
= 133k
V
IN
= 3.3V
V
OUT
= 5V
L = 10μH
R
Z
= 33k
CC1 = 270pF
CC2 = 10pF的
C
OUT
= 22F
200s/DIV
I
L
500mA/DIV
3458f
