-5V / -12V / -15V或可调,
高效率,低I
Q
反相DC -DC控制器
MAX774/MAX775/MAX776
__________________________________________Typical工作特性
(T
A
= + 25 ℃,除非另有说明。 )
MAX774
效率与负载电流
V
OUT
= -5V (自举)
MAX1774/5/6-01a
MAX774
效率与负载电流
V
OUT
= -5V (非自举)
MA774/5/6--1b
MAX774
效率与温度
I
负载
= 100毫安
80
效率(%)
MAX774/5/6-2
90
V
IN
= 5V
80
效率(%)
V
IN
= 3V
V
IN
= 15V
70
90
V
IN
= 5V
80
效率(%)
V
IN
= 4V
70
V
IN
= 15V
90
I
负载
= 600毫安
I
负载
= 1A
70
60
60
60
V
IN
= 5V
自举
50
1
10
100
1000
负载电流(mA )
50
1
10
100
1000
负载电流(mA )
50
-40
-20
0
20
40
60
80
100
温度(℃)
MAX776
效率与负载电流
V
OUT
= -15V (自举)
MA774/5/6-1c
MAX776
效率与负载电流
V
OUT
= -15V (非自举)
MA774/5/6-1d
MAX775
EF网络效率与输出电流
V
OUT
= -12V (自举)
MA774/5/6--1
e
90
V
IN
= 6V
90
90
80
效率(%)
V
IN
= 5V
效率(%)
V
IN
= 4V
V
IN
= 3V
80
V
IN
= 15V
70
V
IN
= 6V
V
IN
= 4V
70
效率(%)
V
IN
= 5V
80
V
IN
= 4V
70
V
IN
= 5V
V
IN
= 8V
60
60
60
50
1
10
100
1000
负载电流(mA )
50
1
10
100
1000
负载电流(mA )
50
1
10
100
1000
输出电流(mA )
MAX774/MAX775/MAX776
效率与负载电流
V
OUT
= -24V (非自举)
MA774/5/6--1f
MAX774/MAX775/MAX776
效率与负载电流
V
OUT
= -24V输出(齐纳二极管连接)
MA774/5/6--1g
MAX774
EF网络效率与输入电压
V
OUT
= -5V在100mA
86
效率(%)
84
82
80
非自举
78
76
V
OUT
= -5V在100mA
MAX774/5/6-3
90
V
IN
= 6V
80
效率(%)
V
IN
= 4V
70
V
IN
= 5V
90
V
IN
= 6V
80
效率(%)
V
IN
= 4V
70
V
IN
= 5V
88
自举
60
60
50
1
10
100
1000
负载电流(mA )
50
1
10
100
1000
负载电流(mA )
74
2
4
6
8
10
12
14
16
输入电压( V)
4
_______________________________________________________________________________________