UC3842BL Просмотр технического описания (PDF) - Unisonic Technologies
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UC3842BL Datasheet PDF : 11 Pages
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UC3842B/3843B
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS(Ta=25°C)
PARAMETER
SYMBOL
RATINGS
UNIT
Total Power Supply and Zener Current
(ICC + Iz)
30
mA
Output Current, Source or Sink (note1)
Io
1.0
A
Output Energy (capacitive load per cycle)
W
5.0
μJ
Current Sense and Voltage Feedback Inputs
VIN
-0.3 ~ +5.5
V
Error Amp. Output Sink Current
IO(SINK)
10
mA
Power Dissipation
DIP-8
1250
mW
SOP-8
PD
702
mW
Operating Junction Temperature
Operating Temperature
Storage Temperature Range
TJ
+150
°C
TOPR
0 ~ +70
°C
TSTG
-65 ~ +150
°C
Note Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
THERMAL DATA
PARAMETER
Thermal Resistance Junction to Ambient
SYMBOL
DIP-8
SOP-8
θJA
RATINGS
100
178
UNIT
°C/W
°C/W
ELECTRICAL CHARACTERISTICS
(0°C ≤TA≤70°C, VCC=15V [note 2], RT=10k, CT=3.3nF, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
REFERENCE SECTION
Output Voltage
Line Regulation
Load Regulation
VREF
ΔVLINE
ΔVLOAD
Io=1.0mA, TJ =25°C
VCC=12V ~ 25V
Io=1.0mA ~ 20mA
Temperature Stability
Total Output Variation
Output Noise Voltage
TS
VREF
eN
Line, Load, Temperature
F=10kHz ~ 10Hz, TJ =25°C
Long Term Stability
S
TA=125°C,1000Hrs
Output Short Circuit Current
ISC
OSCILLATOR SECTION
Frequency
TJ =25°C
F
Ta=0°C ~ 70°C
Frequency Change with Voltage
TJ =25°C (RT=6.2k,CT=1.0nF)
ΔfOSC/ΔV 12 ≤ VCC ≤25V
Frequency Change with
Temperature
ΔfOSC/ΔT 0°C ≤TA ≤70°C
Oscillator Voltage Swing(Peak to
Peak)
VOSC
Discharge Current
ERROR AMPLIFIER SECTION
Idischg
TJ =25°C
0°C ≤TA ≤70°C
Voltage Feedback Input
VFB
Vo=2.5V
Input Bias Current
II(BIAS) VFB=5.0V
Open Loop Voltage Gain
Unity Gain Bandwidth
GVO
GBW
2 ≤Vo≤4V
TJ =25°C
Power Supply Rejection Ratio
PSRR I2V≤Vcc≤25V
Output Sink Current
ISINK Vo=1.1V,VFB =2.7V
Output Source Current
ISOURCE Vo=5.0V,VFB=2.3V
Output Voltage Swing High State
VOH VFB=2.3V, RL=15k to GND
MIN TYP MAX UNIT
4.9 5.0 5.1
V
2.0 20 mV
3.0 25 mV
0.2
mV/°C
4.82
5.18 V
50
uV
5
mV
-30 -85 -180 mA
49 52 55
48
56 kHz
225 250 275
0.2 1.0 %
0.5
%
1.6
V
7.8 8.3 8.8 mA
7.6
8.8
2.42 2.50 2.58 V
-0.1 -2.0 μA
65 90
dB
0.7 1.0
MHz
60 70
dB
2.0 12
mA
-0.5 -1.0
mA
5.0 6.2
V
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 11
QW-R103-012.D
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