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UC3843BVD1G 데이터시트(PDF) 3 Page - ON Semiconductor

부품명 UC3843BVD1G
상세설명  High Performance Current Mode Controllers
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제조업체  ONSEMI [ON Semiconductor]
홈페이지  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

UC3843BVD1G 데이터시트(HTML) 3 Page - ON Semiconductor

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UC3842B, UC3843B, UC2842B, UC2843B
http://onsemi.com
3
ELECTRICAL CHARACTERISTICS (VCC = 15 V [Note 3], RT = 10 k, CT = 3.3 nF. For typical values TA = 25°C, for min/max values
TA is the operating ambient temperature range that applies [Note 4], unless otherwise noted.)
UC284XB, UC2843D
UC384XB, XBV
Characteristics
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
REFERENCE SECTION
Reference Output Voltage (IO = 1.0 mA, TJ = 25°C)
Vref
4.95
5.0
5.05
4.9
5.0
5.1
V
Line Regulation (VCC = 12 V to 25 V)
Regline
2.0
20
2.0
20
mV
Load Regulation (IO = 1.0 mA to 20 mA)
Regload
3.0
25
3.0
25
mV
Temperature Stability
TS
0.2
0.2
mV/°C
Total Output Variation over Line, Load, and Temperature
UC284XB
UC2843D
Vref
4.9
4.82
5.1
5.18
4.82
5.18
V
Output Noise Voltage (f = 10 Hz to 10 kHz, TJ = 25°C)
Vn
50
50
mV
Long Term Stability (TA = 125°C for 1000 Hours)
S
5.0
5.0
mV
Output Short Circuit Current
ISC
− 30
− 85
−180
− 30
− 85
−180
mA
OSCILLATOR SECTION
Frequency
TJ = 25°C
TA = Tlow to Thigh
TJ = 25°C (RT = 6.2 k, CT = 1.0 nF)
fOSC
49
48
225
52
250
55
56
275
49
48
225
52
250
55
56
275
kHz
Frequency Change with Voltage (VCC = 12 V to 25 V)
DfOSC/DV
0.2
1.0
0.2
1.0
%
Frequency Change with Temperature, TA = Tlow to Thigh
DfOSC/DT
1.0
0.5
%
Oscillator Voltage Swing (Peak−to−Peak)
VOSC
1.6
1.6
V
Discharge Current (VOSC = 2.0 V)
TJ = 25°C, TA = Tlow to Thigh
UC284XB, UC384XB
UC2843D, UC384XBV
Idischg
7.8
7.5
8.3
8.8
8.8
7.8
7.6
7.2
8.3
8.8
8.8
8.8
mA
ERROR AMPLIFIER SECTION
Voltage Feedback Input (VO = 2.5 V)
UC284XB
UC2843D
VFB
2.45
2.42
2.5
2.5
2.55
2.58
2.42
2.5
2.58
V
Input Bias Current (VFB = 5.0 V)
IIB
− 0.1
−1.0
− 0.1
− 2.0
mA
Open Loop Voltage Gain (VO = 2.0 V to 4.0 V)
AVOL
65
90
65
90
dB
Unity Gain Bandwidth (TJ = 25°C)
BW
0.7
1.0
0.7
1.0
MHz
Power Supply Rejection Ratio (VCC = 12 V to 25 V)
PSRR
60
70
60
70
dB
Output Current
Sink (VO = 1.1 V, VFB = 2.7 V)
Source (VO = 5.0 V, VFB = 2.3 V)
ISink
ISource
2.0
− 0.5
12
−1.0
2.0
− 0.5
12
−1.0
mA
Output Voltage Swing
High State (RL = 15 k to ground, VFB = 2.3 V)
Low State (RL = 15 k to Vref, VFB = 2.7 V)
UC284XB, UC384XB
UC2843D, UC384XBV
VOH
VOL
5.0
6.2
0.8
1.1
5.0
6.2
0.8
0.8
1.1
1.2
V
3. Adjust VCC above the Startup threshold before setting to 15 V.
4. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
Tlow = 0°C for UC3842B, UC3843B; −25°C for UC2842B, UC2843B; −40°C for UC3842BV, UC3843BV, UC2843D
Thigh = +70°C for UC3842B, UC3843B; +85°C for UC2842B, UC2843B, UC2843D; +105°C for UC3842BV, UC3843BV


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