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參數(shù)資料
| 型號： | AIC3842CS |
| 廠商： | Analog Integrations Corporation |
| 英文描述： | Current-Mode PWM Controller |
| 中文描述： | 電流模式PWM控制器 |
| 文件頁數(shù)： | 4/7頁 |
| 文件大?。?/td> | 114K |
| 代理商： | AIC3842CS |
AIC3842
4
n
ELECTRICAL CHARACTERISTICS
(Continued)
PARAMETERS
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Current Sense Section
Voltage Amplification
See Note 3 and 4
3
V/V
Current Sense Comparator
Threshold
COMP at 5V, See Note 3
1
V
Supply Voltage Rejection
Ratio
V
CC
=12V to 25V, See Note 3
70
dB
nput Bias Current
2
μ
A
Delay Time to Output
150
nS
Output Section
High-Level Output Voltage
SOURCE
=20mA
13.5
V
SOURCE
=200mA
13.4
V
Low-Level Output Voltage
SINK
=20mA
0.1
V
SINK
=200mA
1.5
V
Rise Time
C
L
=1nF
50
nS
Fall Time
C
L
=1nF
50
nS
Undervoltage Lockout Section
Start Threshold Voltage
14.5
16
17.5
V
Minimum Operating Voltage
after Start-Up
8.5
10
11.5
V
Pulse-Width-Modulator Section
Maximum Duty Cycle
96
%
Minimum Duty Cycle
0
%
Supply Voltage
Start-Up Current
0.3
0.5
mA
Operating Supply Current
V
FB
and I
SENSE
at 0V
12
17
mA
Limiting Voltage
CC
=25mA
34
V
Note: 2: Adjust VCC above the start threshold before setting it to 15V.
3. These parameters are measured at the trip point of the latch wth VFB at 0V.
4. Voltage amplification is measured between ISENSE and COMP with the input changing from 0V to
0.8V.
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