s
电气特性
qR1211X002A
符号
项
V
IN
工作输入电压
V
FB
V
FB
电压容差
V
FB
/ V
FB
电压
温度COEF网络cient
T
I
FB
V
FB
输入电流
f
OSC
振荡器频率
f
OSC
/振荡器频率
温度COEF网络cient
T
I
DD1
电源电流1
Maxdty
最大占空比
R
EXTH
EXT “H”的导通电阻
R
EXTL
I
DLY1
I
DLY2
V
DLY
T
开始
V
UVLO1
V
UVLO2
I
AMP1
I
AMP2
EXT “L”的导通电阻
延迟引脚充电电流
延迟引脚放电电流
延迟PIN探测器阈值
条件
V
IN
=3.3V
-40 ° C≤ TOPT
≤
85°C
V
IN
=6V, V
FB
= 0V或6V
V
IN
=3.3V, V
DLY
=V
FB
=0V
-40 ° C≤ TOPT
≤
85°C
V
IN
=6V, V
DLY
=V
FB
= 0V ， EXT在无负载
V
IN
= 3.3V ， EXT “H ”的一面
V
IN
= 3.3V ，我
EXT
=-20mA
V
IN
= 3.3V ，我
EXT
=20mA
V
IN
=3.3V, V
DLY
=V
FB
=0V
V
IN
=V
FB
=2.5V, V
DLY
=0.1V
分钟。
2.5
0.985
典型值。
1.000
±150
(Topt=25°C)
马克斯。
单位
6.0
V
1.015
V
PPM /°C的
0.1
805
A
千赫
千赫/ ℃，
A
%
A
mA
V
ms
V
V
mA
A
-0.1
595
700
±1.4
600
90
5
3
82
900
94
10
6
7.5
9.0
1.05
13.5
2.3
0.18
1.50
90
2.5
2.5
0.95
4.5
2.1
0.08
0.45
30
5.0
5.5
1.00
9.0
2.2
0.13
0.90
60
V
IN
=3.3V, V
FB
=0V, V
DLY
=0V→2V
软启动时间
V
IN
= 3.3V在90 ％上升沿
UVLO检测电压V
IN
=3.3V→0V, V
DLY
=V
FB
=0V
UVLO检测迟滞V
IN
=0V→3.3V, V
DLY
=V
FB
=0V
AMP的“H”的输出电流
V
IN
=3.3V, V
AMP
=1V, V
FB
=0.9V
AMP的“L”，输出电流
V
IN
=3.3V, V
AMP
=1V, V
FB
=1.1V
修订版1.10
-5-
