3.3V ,输入为5V稳压输出
电荷泵
MAX682/MAX683/MAX684
典型工作特性(续)
图5中,将V (电路
IN
=从表2和表3,T 3.3V,组件值
A
= + 25 ℃,除非另有说明。 )
MAX682效率
与负载电流( SKIP = LOW )
MAX682 TOC10
MAX683效率
与负载电流( SKIP = LOW )
MAX682 TOC11
MAX684效率
与负载电流( SKIP = LOW )
90
80
效率(%)
70
60
50
40
30
20
10
0
V
IN
= 3.3V
V
IN
= 3.6V
V
IN
= 3.0V
MAX682 TOC12
100
90
80
效率(%)
V
IN
= 3.0V
100
90
80
效率(%)
70
60
50
40
30
20
10
0
V
IN
= 3.3V
V
IN
= 3.6V
V
IN
= 3.0V
100
70
60
50
40
30
20
10
0
0.1
1
10
100
1000
负载电流(mA )
V
IN
= 3.3V
V
IN
= 3.6V
0.1
1
10
100
1000
0.1
1
10
100
负载电流(mA )
负载电流(mA )
MAX682效率
与负载电流( SKIP =高)
MAX682 TOC13
MAX683效率
与负载电流( SKIP =高)
90
80
效率(%)
效率(%)
70
60
50
40
30
20
V
IN
= 5.0V
V
IN
= 3.3V
V
IN
= 3.0V
MAX682 TOC14
MAX684效率
与负载电流( SKIP =高)
80
70
60
50
40
30
20
V
IN
= 5.0V
V
IN
= 3.0V
V
IN
= 3.3V
MAX682 TOC15
100
90
80
效率(%)
70
60
50
40
30
20
10
0
1
10
100
I
SHDN
= 22µA
V
IN
= 5.0V
V
IN
= 3.3V
V
IN
= 3.0V
100
90
10
0
1000
1
10
I
SHDN
= 22µA
100
1000
10
0
1
10
I
SHDN
= 22µA
100
负载电流(mA )
负载电流(mA )
负载电流(mA )
输出波形
( SKIP =高)
MAX682 TOC16
输出波形
( SKIP =低)
MAX682 TOC17
50mV/div
50mV/div
200ns/div
SKIP = HIGH ,我
SHDN
= 22μA ,我
负载
= 250毫安, MAX682
200ns/div
SKIP = LOW ,我
负载
= 250毫安, MAX682
4
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