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CP494 参数 Datasheet PDF下载

CP494图片预览
型号: CP494
PDF下载: 下载PDF文件 查看货源
内容描述: 开关模式脉宽调制控制电路 [SWITCHMODE Pulse Width Modulation Control Circuit]
分类和应用: 开关
文件页数/大小: 11 页 / 155 K
品牌: CERAMATE [ CERAMATE TECHNICAL ]
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CP494  
SWITCHMODE Pulse Width Modulation Control Circuit  
RECOMMENDED OPERATING CONDITIONS  
Characteristics  
Symbol  
Min  
7.0  
Typ  
15  
30  
Max  
40  
Unit  
V
Power Supply Voltage  
V
CC  
Collector Output Voltage  
V
I
, V  
40  
V
C1  
C2  
Collector Output Current (Each transistor)  
Amplified Input Voltage  
Current Into Feedback Terminal  
Reference Output Current  
Timing Resistor  
, I  
C1 C2  
200  
mA  
V
V
in  
–0.3  
V
– 2.0  
CC  
l
fb  
0.3  
10  
mA  
mA  
kW  
mF  
kHz  
l
ref  
R
T
C
T
1.8  
0.0047  
1.0  
30  
0.001  
40  
500  
10  
Timing Capacitor  
Oscillator Frequency  
f
200  
osc  
ELECTRICAL CHARACTERISTICS (V = 15 V, C = 0.01 mF, R = 12 kW, unless otherwise noted.)  
CC  
T
T
For typical values T = 25°C, for min/max values T is the operating ambient temperature range that applies, unless otherwise noted.  
A
A
Characteristics  
Symbol  
Min  
Typ  
Max  
Unit  
REFERENCE SECTION  
Reference Voltage (I = 1.0 mA)  
V
4.75  
5.0  
2.0  
3.0  
35  
5.25  
25  
V
O
ref  
Line Regulation (V = 7.0 V to 40 V)  
Reg  
mV  
mV  
mA  
CC  
line  
Load Regulation (I = 1.0 mA to 10 mA)  
Reg  
15  
O
load  
Short Circuit Output Current (V = 0 V)  
I
15  
75  
ref  
SC  
OUTPUT SECTION  
Collector Off–State Current  
I
2.0  
100  
mA  
mA  
V
C(off)  
(V = 40 V, V = 40 V)  
CC  
CE  
Emitter Off–State Current  
= 40 V, V = 40 V, V = 0 V)  
I
–100  
E(off)  
V
CC  
C
E
Collector–Emitter Saturation Voltage (Note 2)  
Common–Emitter (V = 0 V, I = 200 mA)  
V
V
1.1  
1.5  
1.3  
2.5  
E
C
sat(C)  
sat(E)  
Emitter–Follower (V = 15 V, I = 200 mA)  
C
E
Output Control Pin Current  
Low State (V v 0.4 V)  
I
10  
0.2  
3.5  
mA  
mA  
OC  
OCL  
High State (V = V  
)
I
OCH  
OC  
ref  
Output Voltage Rise Time  
t
r
ns  
Common–Emitter (See Figure 12)  
Emitter–Follower (See Figure 13)  
100  
100  
200  
200  
Output Voltage Fall Time  
t
f
ns  
Common–Emitter (See Figure 12)  
Emitter–Follower (See Figure 13)  
25  
40  
100  
100  
2. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.  
* All specs and applications shown above subject to change without prior notice.  
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN  
Tel:886-3-3214525  
Email: server@ceramate.com.tw  
Http: www.ceramate.com.tw  
Rev 1.0 Apr.19,2004  
Page 2 of 11  
Fax:886-3-3521052