MAX4864L/MAX4865L/MAX4866L/MAX4867/MAX4865/MAX4866
______________________________
MAX4864L/MAX4865L/MAX4866L/MAX4867
+28V
MAX4864L/MAX4865L/
MAX4866L/MAX4867
n
MOSFET
p
MOSFET
)
MOSFET GATEN
(
GATEN
50ms的GATEN
旗
50ms
旗
+5.5V
GATEN
GATEP
GATEP
MOSFET
p
MOSFET
MOSFET
（中）
+16V
p
GATEP
p
GATEP IN
+28V
MAX4864L/MAX4865L/MAX4866L/MAX4867
V
IN
< UVLO
0V
旗
50ms
GATEN
V
IN
旗
50ms
GATEN
旗
GATEN
V
IN
UVLO
旗
UVLO < V
IN
< OVLO
5
V
IN
> OVLO GATEN
（ UVLO ）
MAX4864L/MAX4865L/MAX4866L/MAX4867
UVLO
+2.85V
MAX4867 UVLO
UVLO
GATEN
+2.5V
V
IN
旗
（ OVLO ）
MAX4864L
OVLO
+ 7.4V MAX4865L
OVLO
+ 6.35V MAX4866L
OVLO
+ 5.8V MAX4867
OVLO
+4.65V
OVLO
GATEN
V
IN
旗
待机
GATEN = 0
FLAG = HIGH
V
IN
> UVLO
定时器启动
计数
旗
旗
GATEN
50ms
旗
旗
GATEN
I / O
旗
旗
50ms
V
IN
< UVLO
T = 50ms的
OVLO检查
GATEN = 0
FLAG = HIGH
V
IN
> OVLO
启动
GATEN驱动为高电平
FLAG = HIGH
T = 50ms的
GATEN
GATEN
IN
n
MOSFET
+5.5V
OVLO
GATEN
MAX4864L OVLO
+7.4V
V
IN
< + 7.4V
GATEN
MAX4866L
+ 5.8V OVLO
V
IN
+5.5V
V
IN
+ 5.5V <
+10.5V
5.
V
IN
> OVLO
ON
GATEN高
FLAG = LOW
6
_______________________________________________________________________________________
ETC [ ETC ]
