参数资料
型号: GM3843AD8T
厂商: American Power Management Inc.
英文描述: HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
中文描述: 高性能电流模式PWM控制器
文件页数: 4/19页
文件大小: 304K
代理商: GM3843AD8T
R2
8
4
2
1
R1
R
Internal
Bias
Oscillator
+
-
Error
Amplifier
1.0mA
Vclamp
+
2R
R
5
1.0V
-
+
S
R
+
-
+
-
5.0 Vref
VCC 7
+
-
VCC
VIN
7
6
5
3
RS
Q1
Figure 12. Adjustable reduction of clamp level
t
3600C in F
soft-start
8
4
2
1
5
C
R
Internal
Bias
Oscillator
+
-
+
-
5.0 Vref
2R
1.0mA
+
-
+
Error
Amplifier
R
1.0V
+
-
Q
S
R
Q
Figure 13. Soft-start circuit
+
-
Comp/ Latch
1.0M
V
=
+0.33X10-3 (
)
clamp
1.67
(
+ 1)
R2
R1
R1 + R2
I=
PK(max)
where: 0
V
1.0V
clamp
V
clamp
RS
12
G
M
3
8
4
2
A
,
G
M
3
8
4
3
A
,
G
M
3
8
4
A
,
G
M
3
8
4
5
A
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