參數(shù)資料
型號: AIC3843CNTB
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): 4/11頁
文件大?。?/td> 189K
代理商: AIC3843CNTB
AIC3843
4
n
ELECTRICAL CHARACTERISTICS
(Continued)
PARAMETERS
CONDITIONS
MIN.
TYP.
MAX.
UNITS
Current Sense Section
Voltage Amplification
See Note 3 and 4
2.85
3
3.15
V/V
Current Sense Comparator
Threshold
COMP at 5V, See Note 3
0.9
1
1.1
V
Supply Voltage Rejection
Ratio
V
CC
=12V to 25V, See Note 3
70
dB
nput Bias Current
2
10
μ
A
Delay Time to Output
150
300
nS
Output Section
SOURCE
=20mA
13
13.5
V
High-Level Output Voltage
SOURCE
=200mA
12
13.4
V
SINK
=20mA
0.1
0.4
V
Low-Level Output Voltage
SINK
=200mA
1.5
2.2
V
Rise Time
C
L
=1nF
50
150
nS
Fall Time
C
L
=1nF
50
150
nS
Under voltage Lockout Section
Start Threshold Voltage
7.8
8.4
9.0
V
7.0
7.6
8.2
V
Minimum Operating Voltage
after Start-Up
Pulse-Width-Modulator Section
Maximum Duty Cycle
95
96
100
%
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
30
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 with 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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