KA3842JI Просмотр технического описания (PDF) - Estek Electronics Co. Ltd
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KA3842JI Datasheet PDF : 12 Pages
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ET- KA384x
Electrical Characteristics
(TA=25 °C, VCC=15V, RT=10KΩ, CT=3.3nF, TA=0oC to +70oC, unless otherwise specified .)
Symbol
Parameter
Test Condition
Min.
Reference Section
VREF Reference Output Voltage
TJ=25oC, IREF=1mA
4.9
Regline Line Regulation
12V≤VCC≤25V
-
Regload Load Regulation
1mA≤IREF≤20mA
-
ISC
Short Circuit Output Current
TA=25oC
-
Oscillator Section
f
Oscillator Frequency
TJ=25oC
47
△f/△VCC Frequency Change with Voltage 12V≤VCC≤25V
-
V(OSC) Oscillator Amplitude
(peak to peak)
-
Error Amplifier Section
IBIAS
Input Bias Current
VFB=3V
-
VIN(E.A)
AVOL
UGBW
Input Voltage
Open Loop Voltage Gain
Unity Gain Bandwidth
Vpin1=2.5V
2V≤Vo≤4V
Tj=25oC, Note 3
2.42
65
0.5
PSRR Power Supply Rejection Ratio
12V≤VCC≤25V
60
ISINK
Output Sink Current
Vpin2=2.7V, Vpin1=1.1V
2.0
ISOURCE Output Source Current
Vpin2=2.3V, Vpin1=5.0V
-0.5
VOH
High Output Voltage
Vpin2=2.3V, RL=15KΩ to GND
5.0
VOL
Low Output Voltage
Vpin2=2.3V, RL=15KΩ to pin 8
-
Current Sense Section
GV
Gain
( Note 1 & 2 )
2.85
VIN(MAX) Maximum Input Signal
Vpin1=5V (Note 1)
0.9
SVR Supply Voltage
12V≤VCC≤25V
-
IBIAS
Input Bias Current
Vpin3=3V
-
Output Section
ISINK=20mA
-
VOL
Low Output Voltage
ISINK=200mA
-
VOH
High Output Voltage
tR
Rise Time
tF
Fall Time
ISINK=20mA
13
ISINK=200mA
12
TJ=25oC,CL=1nF (Note 3)
-
TJ=25oC,CL=1nF (Note 3)
-
Under-voltage Lockout Section
VTH(ST) Start Threshold
KA3842 / KA3844
14.5
KA3843 / KA3845
7.8
Min. Operating Voltage
KA3842 / KA3844
8.5
VOPR(min)
(After Turn On)
KA3843 / KA3845
7.0
Typ.
5.0
6.0
6.0
-100
52
0.05
1.6
-0.1
2.5
90
0.6
70
7.0
-1.0
6.0
0.8
3.0
1.0
70
-3.0
0.08
1.4
13.5
13.0
45
35
16.0
8.4
10
7.6
Max.
5.1
20
25
-180
57
1.0
-
-2.0
2.58
-
-
-
-
-
-
1.1
3.15
1.1
-
-10
0.4
2.2
-
150
150
17.5
9.0
11.5
8.2
Unit
V
mV
mV
mA
KHz
%
V
uA
V
dB
MHz
dB
mA
mA
V
V
V/V
V
dB
uA
V
nS
V
V
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Copyright @ Estek Electronics Co., Ltd
Version 0.2
27 July 2011
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