AP3720 데이터 시트보기 (PDF) - BCD Semiconductor
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AP3720 Datasheet PDF : 13 Pages
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Preliminary Datasheet
CURRENT MODE PWM CONTROLLER FOR BJT
AP3720
Electrical Characteristics
VCC =15V, TA=25°C, unless otherwise specified.
Parameter
Conditions
Supply Voltage ( VCC Pin )
Startup Current
Operating Current
UVLO (on)
VCC=15V
VFB=VCS=0V
UVLO (off)
VCC OVP
PWM Section / Oscillator Section
Maximum Duty Cycle
Normal Frequency
Green Frequency
Frequency Switch Delay Time
VFB=3V
VFB=2V
From 65k to 20k
From 20k to 65k
Frequency Temperature Stability -40ºC to 85ºC
Frequency Voltage Stability
VCC=8V to 18V
Current Sense Section ( CS Pin )
Maximum CS Voltage
VLINE=0.95V
Line Compensation Coefficient
LEB Time
Soft Start Time
Feedback Input Section ( FB Pin )
The Ratio of FB to CS
GFB
Input Impedance
RFB
Source Current
IFB
Output Section ( Gate Pin )
Output Maximum Current
Output Sink Current
Protection Section
RBIAS=1M
VFB=VCS=0V
OLP Delay Time
Shutdown Temperature
VFB=5.1V
Min
18.5
7.1
67
60
0.983
250
2.5
7
-1
Typ
2.5
1.2
20
8
26.5
75
65
20
64
0
±5
1.5
1.032
4.6
350
2
3
10
-0.5
32
64
160
Max Unit
8
µA
2.5
mA
21.5
V
8.9
V
28.5
V
83
%
70
kHz
kHz
ms
ms
±8
%
3
%
1.081
V
9.5
%
400
ns
ms
3.5
V/V
13
kΩ
mA
mA
0.5
mA
ms
ºC
Jul. 2009 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
5
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