5V或可调,低电压,
升压型DC- DC控制器
____________________________Typical工作特性(续)
(T
A
= + 25 ℃,除非另有说明。 )
重负载的开关波形
(V
OUT
= 12V)
V
OUT
A
0V
I
LIM
B
0A
C
C
B
0A
A
MAX608
中等负荷的开关波形
(V
OUT
= 12V)
V
OUT
0V
I
LIM
2µs/div
V
IN
= 4V ,我
OUT
= 490毫安,V
OUT
= 12V
A = EXT电压, 10V / DIV
B =电感电流1A /格
Ç - V
OUT
纹波为50mV /格,交流耦合
10µs/div
V
IN
= 4V ,我
OUT
= 300毫安,V
OUT
= 12V
A = EXT电压, 10V / DIV
B =电感电流1A /格
Ç - V
OUT
纹波为50mV /格,交流耦合
线路瞬态响应
(V
OUT
= 5V)
负载瞬态响应
(V
OUT
= 5V)
A
4.0V
2.7V
500mA
A
0A
B
B
5ms/div
I
OUT
= 500毫安,V
OUT
= 5V
A = V
IN
2.7V到4.0V , 1V / DIV
B = V
OUT
纹波为100mV / DIV ,交流耦合
2ms/div
V
IN
= 2V, V
OUT
= 5V
A =负载电流0毫安500mA的电流, 500毫安/ DIV
B = V
OUT
纹波为50mV /格,交流耦合
EXITING SHUTDOWN
A
0V
5V
B
0V
200µs/div
I
OUT
= 500毫安,V
IN
= 3.5V
A = SHDN , 2V / DIV
B = V
OUT
, 2V / DIV
_______________________________________________________________________________________
5