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UC3844L-D08-T Arkusz danych(PDF) 4 Page - Unisonic Technologies

Numer części UC3844L-D08-T
Szczegółowy opis  HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
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Producent  UTC [Unisonic Technologies]
Strona internetowa  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UC3844L-D08-T Arkusz danych(HTML) 4 Page - Unisonic Technologies

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UC3844/45
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
4 of 7
www.unisonic.com.tw
QW-R103-010.D
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 (Note 2)
IOUT
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
ISINK
10
mA
SOP-8
862
mW
Power Dissipation
DIP-8
PD
1250
mW
Junction Temperature
TJ
+150
°C
Operation Temperature
TOPR
0 ~ 70
°C
Storage Temperature
TSTG
-65 ~ +150
°C
Note:1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Note:1. Absolute maximum ratings are stress ratings only and functional device operation is not implied.
2. Maxmum package power dissipation limits must be observed.
THERMAL DATA
PARAMETER
SYMBOL
RATINGS
UNIT
SOP-8
145
°C/W
Junction to Ambient
DIP-8
θJA
100
°C/W
ELECTRICAL CHARACTERISTICS
(TA=25°C, VCC=15V, RT=10k, CT=3.3nF, 0°C TA 70°C, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
REFERENCE SECTION
Reference Output Voltage
VREF
IOUT=1.0mA,TJ=25 C
4.9
5.0
5.1
V
Line Regulation
VOUT
VCC=12V ~ 25V
2.0
20
mV
Load Regulation
VOUT
IOUT=1.0mA ~ 20mA
3.0
25
mV
Temperature Stability
tS
0.2
mV/
°C
Total Output Variation over Line,
Load, Temperature
VREF
4.82
5.18
V
Output Noise Voltage
eN
f=10Hz ~ kHz, TJ=25°C
50
μV
Long Term Stability
S
TA=125°C for 1000 Hours
5
mV
Output Short Circuit Current
ISC
-30
-85
-180
mA
OSCILLATOR SECTION
Oscillator Voltage Swing
VOSC
1.6
V
Discharge Current
IDSG
VOSC=2.0V, TJ=25
°C
10.8
mA
TJ=25°C,
47
52
57
Frequency
fOSC
0
°C
TA 70°C
46
60
kHz
Frequency Change with Voltage
ΔfOSC/ΔV
VCC=12V ~ 25V
0.2
1.0
%
Frequency Change with Temperature
ΔfOSC/ΔT
0
°C
TA 70°C
5.0
%
ERROR AMPLIFIER SECTION
Voltage Feedback Input
VFB
VOUT=2.5V
2.42
2.50
2.58
V
High
VOH
RL=15k to ground, VFB=2.3V
5.0
6.2
Output Voltage Swing
Low
VOL
RL=15k to VREF, VFB=2.7V
0.8
1.1
V
Sink
ISINK
VOUT=1.1V, VFB=2.7V
2.0
12
Output Current
Source
ISOURCE
VOUT=5.0V, VFB=2.3V
-0.5
-1.0
mA
Input Bias Current
II(BIAS)
VFB=2.7V
-0.1
-2.0
μA
Open Loop Voltage Gain
GVO
VOUT=2.0V ~ 4.0V
65
90
dB
Power Supply Rejection Ratio
PSRR
VCC=12V ~ 25V
60
70
dB
Unity Gain Bandwidth
GBW
TJ=25°C
0.7
1.0
MHz


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