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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  
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  
ERROR AMPLIFIER SECTION  
Symbol  
Min  
Typ  
Max  
Unit  
Input Offset Voltage (V  
= 2.5 V)  
= 2.5 V)  
V
2.0  
5.0  
10  
mV  
nA  
O (Pin 3)  
O (Pin 3)  
IO  
Input Offset Current (V  
I
IO  
250  
–1.0  
Input Bias Current (V  
= 2.5 V)  
I
IB  
–0.1  
mA  
O (Pin 3)  
Input Common Mode Voltage Range (V = 40 V, T = 25°C)  
V
ICR  
–0.3 to V –2.0  
V
CC  
A
CC  
Open Loop Voltage Gain (DV = 3.0 V, V = 0.5 V to 3.5 V, R = 2.0 kW)  
A
VOL  
70  
95  
350  
65  
dB  
O
O
L
Unity–Gain Crossover Frequency (V = 0.5 V to 3.5 V, R = 2.0 kW)  
f
C–  
kHz  
deg.  
dB  
O
L
Phase Margin at Unity–Gain (V = 0.5 V to 3.5 V, R = 2.0 kW)  
f
m
O
L
Common Mode Rejection Ratio (V = 40 V)  
CMRR  
65  
90  
CC  
Power Supply Rejection Ratio (DV = 33 V, V = 2.5 V, R = 2.0 kW)  
PSRR  
100  
0.7  
–4.0  
dB  
CC  
O
L
Output Sink Current (V  
= 0.7 V)  
I
O–  
0.3  
2.0  
mA  
mA  
O (Pin 3)  
Output Source Current (V  
= 3.5 V)  
I +  
O
O (Pin 3)  
PWM COMPARATOR SECTION (Test Circuit Figure 11)  
Input Threshold Voltage (Zero Duty Cycle)  
V
I
2.5  
0.7  
4.5  
V
TH  
Input Sink Current (V  
= 0.7 V)  
0.3  
mA  
(Pin 3)  
I–  
DEADTIME CONTROL SECTION (Test Circuit Figure 11)  
Input Bias Current (Pin 4) (V = 0 V to 5.25 V)  
I
–2.0  
–10  
mA  
Pin 4  
IB (DT)  
Maximum Duty Cycle, Each Output, Push–Pull Mode  
DC  
%
max  
(V  
Pin 4  
(V  
Pin 4  
= 0 V, C = 0.01 mF, R = 12 kW)  
45  
48  
45  
50  
50  
T
T
= 0 V, C = 0.001 mF, R = 30 kW)  
T
T
Input Threshold Voltage (Pin 4)  
(Zero Duty Cycle)  
(Maximum Duty Cycle)  
V
th  
V
0
2.8  
3.3  
OSCILLATOR SECTION  
Frequency (C = 0.001 mF, R = 30 kW)  
f
osc  
40  
3.0  
0.1  
kHz  
%
T
T
Standard Deviation of Frequency* (C = 0.001 mF, R = 30 kW)  
sf  
osc  
T
T
Frequency Change with Voltage (V = 7.0 V to 40 V, T = 25°C)  
Df  
Df  
(DV)  
(DT)  
%
CC  
A
osc  
osc  
Frequency Change with Temperature (DT = T  
to T  
)
12  
%
A
low  
high  
(C = 0.01 mF, R = 12 kW)  
T
T
UNDERVOLTAGE LOCKOUT SECTION  
Turn–On Threshold (V increasing, I = 1.0 mA)  
V
th  
5.5  
6.43  
7.0  
V
CC  
ref  
TOTAL DEVICE  
Standby Supply Current (Pin 6 at V , All other inputs and outputs open)  
I
mA  
ref  
CC  
(V = 15 V)  
(V = 40 V)  
CC  
5.5  
7.0  
10  
15  
CC  
Average Supply Current  
mA  
(C = 0.01 mF, R = 12 kW, V = 2.0 V)  
(Pin 4)  
7.0  
T
T
(V = 15 V) (See Figure 12)  
CC  
N
2
S (X – X)  
n
* Standard deviation is a measure of the statistical distribution about the mean as derived from the formula, s  
n = 1  
N – 1  
* 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 3 of 11  
Fax:886-3-3521052