AIC3843 Datasheet, PDF (4/11 Pages) Analog Intergrations Corporation – Current-Mode PWM Controller

AIC3843
n ELECTRICAL CHARACTERISTICS (Continued)
PARAMETERS
Current Sense Section
Voltage Amplification
Current Sense Comparator
Threshold
Supply Voltage Rejection
Ratio
Input Bias Current
Delay Time to Output
CONDITIONS
See Note 3 and 4
COMP at 5V, See Note 3
V_CC=12V to 25V, See Note 3
MIN. TYP. MAX. UNITS
2.85
3
3.15 V/V
0.9
1
1.1
V
70
dB
-2
-10
µA
150
300
nS
Output Section
High-Level Output Voltage
Low-Level Output Voltage
Rise Time
Fall Time
I_SOURCE=20mA
I_SOURCE =200mA
I_SINK=20mA
I_SINK=200mA
C_L=1nF
C_L=1nF
Under voltage Lockout Section
Start Threshold Voltage
Minimum Operating Voltage
after Start-Up
13
13.5
V
12
13.4
V
0.1
0.4
V
1.5
2.2
V
50
150
nS
50
150
nS
7.8
8.4
9.0
V
7.0
7.6
8.2
V
Pulse-Width-Modulator Section
Maximum Duty Cycle
Minimum Duty Cycle
95
96
100
%
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
I_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.
4