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參數(shù)資料
| 型號(hào)： | 3843CMTR-E1 |
| 廠商： | BCD Semiconductor Manufacturing Limited |
| 英文描述： | CURRENT MODE PWM CONTROLLER |
| 中文描述： | 電流模式PWM控制器 |
| 文件頁(yè)數(shù)： | 7/13頁(yè) |
| 文件大小： | 188K |
| 代理商： | 3843CMTR-E1 |
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CURRENT MODE PWM CONTROLLER AP384XC
Data Sheet
7
Sep. 2006 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
Electrical Characteristics (Continued)
Parameter
UNDER -VOLTAGE LOCKOUT SECTION
Start Threshold
Symbol
Conditions
Min
Typ
Max
Unit
V
TH
(ST)
AP3842C/AP3844C
15
16
17
V
AP3843C/AP3845C
7.8
8.4
9.0
V
Min. Operation Voltage
(After Turn On)
V
OPR
(Min.)
AP3842C/AP3844C
8.5
10.0
11.5
V
AP3843C/AP3845C
7.0
7.6
8.2
V
PWM SECTION
Max. Duty Cycle
D(Max.)
AP3842C/AP3843C
95
97
100
%
D(Max.)
AP3844C/AP3845C
46
48
50
%
Min. Duty Cycle
D(Min.)
0
%
TOTAL STANDBY CURRENT SECTION
Start-Up Current
I
ST
50
80
μ
A
Operating Supply Current
I
CC
(OPR)
V
Z
Vpin3=Vpin2=0V
8
12
mA
Zener Voltage
I
CC
=25mA
30
34
V
OVER-TEMPERATURE PROTECT SECTION
Shutdown Temperature
T
SHUT
T
HYS
(Note 6)
155
o
C
o
C
Temperature Hysteresis
(Note 6)
25
Figure 4. Basic Test Circuit
A=
≤
Vpin3
≤
0.8V
VPin 3
Note 6: These parameters, although guaranteed, are not 100% tested in production.
Note 7: This parameter is measured with RT=10k
to V
REF,
it contributes 0.3mA of current to the measured value.
So the total current flowing into the CT pin will be 0.3mA higher than the measured value approximately.
Note 5: Here gain is defined as:
VPi , 0
Note 4: Parameters are tested at trip point of latch with Vpin2 = 0.
1
2
8
7
AP384XC
3
4
5
6
V
REF
V
CC
OUTPUT
GND
R
T
/C
T
I
SENSE
V
FB
COMP
V
REF
V
CC
OUTPUT
GND
1K
1W
C
T
5k
I
ADJUST
1k
ERROR AMP
ADJUST
4.7k
100k
2N2222
4.7k
R
T
0.1
μ
F
0.1
μ
F
A
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