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AX3842 Datasheet(PDF) 3 Page - List of Unclassifed Manufacturers

Part # AX3842
Description  High Performance Current Mode Pwm Controlers
PDF  12 Pages
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Manufacturer  ETC [List of Unclassifed Manufacturers]
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AX3842 Datasheet(HTML) 3 Page - List of Unclassifed Manufacturers

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Page No. : 3/12
AVANTICS - AX3842 Series
Specification No.: 050308-FE0008
Electrical Characteristics
Unless otherwise stated, specifications apply for 0
≤Tamb≤70°C VCC=15V (Note 1);
RT=680
Ω, CT=0.022uF for triangular mode, RT=10k, CT=3.3nf for sawtooth mode
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Units
Reference Section
V
REF
Reference Output Voltage
Tj=25
°C,Io=1mA
4.90
5
5.1
V
∆VREF
Line Regulation
12V
≤Vin≤25V
-2.0
20
mV
∆VREF
Load Regulation
1mA
≤Io≤20mA
-3.0
25
mV
∆VREF/∆T Temperature Stability
(Note 2)
-0.2
-
mV/
°C
Total Output Variation
Line, Load, Temp (Note 2)
4.82
-
5.18
V
e
N
Output Noise Voltage
10Hz
≤f≤10kHz,Tj=25°C (Note 2)
-50
-
uV
Long Term Stability
Ta=125
°C,1000Hrs (Note 2)
-5
-
mV
I
SC
Output Short Current
Ta=25
°C
-30
-100
-180
mA
Oscillator Section
T
J=25
°C
47
52
57
KHz
f
OSC
Frequency
T
low
≤TA≤Thigh
46
52
60
KHz
∆fOSC/∆V Frequency Change with Volt.
12V
≤VCC≤25V
-0.2
1
%
T
low
≤TA≤Thigh (Note 2)
-5
-
%
∆fOSC/∆T Frequency Change with Temp.
T
J=25
°C
-0.5
-
%
V
OSC
Oscillator Voltage Swing
Peak to Peak
-
1.7
-
V
T
J=25
°C
7.8
8.3
9.3
mA
I
dischg
Discharge Current (V
OSC=2V)
T
low
≤TA≤Thigh
7.2
-
9.5
mA
Error Amplifier Section
V
2
Voltage Feedback Input
V
O=2.5V
2.42
2.50
2.58
V
I
b
Input Bias Current
V
FB=5.0V
-
-0.1
-2.0
uA
A
VOL
Open Loop Voltage Gain
2
≤VO≤4 V
65
90
-
dB
BW
Unity Gain Bandwidth
T
J=25
°C (Note 2)
0.7
1.0
-
MHz
PSRR
Power Supply Rejection Ratio
12V
≤VCC≤25V
60
70
-
dB
Sink (V
O=1.1V, VFB=2.7V)
2.0
12
-
mA
I
O
Output Current
Source (V
O=5.0V, VFB=2.3V)
-0.5
-1.0
-
mA
V
OUT-High
Output Voltage Swing High State
V
FB=2.3V, RL=15K to ground
5
6
-
V
V
OUT-Low
Output Voltage Swing Low State
V
FB=2.7V, RL=15K to VREF
-0.7
1.1
V
Current Sense Section
G
V
Current Sense Input Voltage Gain
(Notes 3 & 4)
2.85
3.0
3.15
V/V
V
3
Maximum Input Signal
V
PIN1=5V
(Note 3)
0.9
1.0
1.1
V
SVR
Supply Voltage Rejection Ratio
12V
≤VCC≤25V (Note 3)
-70
-
dB
I
b
Input Bias Current
-
-2.0
-10
uA
Propagation Delay
Tj=25
°C (Note 2)
-
150
300
nS



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