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UC2843BG-S08-R bảng dữ liệu(PDF) 5 Page - Unisonic Technologies

tên linh kiện UC2843BG-S08-R
Giải thích chi tiết về linh kiện  HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
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nhà sản xuất  UTC [Unisonic Technologies]
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UC2843BG-S08-R bảng dữ liệu(HTML) 5 Page - Unisonic Technologies

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UC2843B
Preliminary
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
5 of 9
www.unisonic.com.tw
QW-R103-048.a
ELECTRICAL CHARACTERISTICS
(VCC = 15 V, RT = 10kΩ, CT = 3.3nF, TJ=25°C, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX UNIT
REFERENCE SECTION
Reference Output Voltage
VREF
IOUT =1mA, TJ =25°C
4.95
5
5.05
V
Line Regulation
ΔVOUT
VCC = 12V~25V
6
20
mV
Load Regulation
ΔVOUT
IOUT = 1mA~20mA
6
25
mV
Average Temperature Coefficient Of
Output Voltage
TS
0.2
0.4
mV/°C
Total Output Variation
VREF
VCC =12V~25V, IOUT =1mA~20mA
4.9
5.1
V
Output Noise Voltage
eN
f = 10Hz~10kHz, TJ =25°C
50
μV
Long Term Stability
TJ=25°C FOR 1000 hours
5
25
mV
Output Short Circuit Current
ISC
-30
-100
-180
mA
OSCILLATOR SECTION
TJ =25°C,
RT =62kΩ, CT =1nF,
Min =225 kHz, Max =275 kHz
49
52
55
kHz
Frequency
fOSC
TJ = Full range
48
56
kHz
Frequency Change with Voltage
V
Δ
f
Δ OSC
VCC = 12V ~ 25V
0.2
1
%
Frequency Change with
Temperature
T
Δ
f
Δ OSC
TJ = Full range
5
%
Oscillator Voltage Swing
VOSC
Peak to peak
1.7
V
TJ =25°C, RT/CT =2V
7.8
8.3
8.8
mA
Discharge Current
IDISC
RT/CT =2V
7.5
8.8
mA
ERROR-AMPLIFIER SECTION
Voltage Feedback Input
VFB
COMP =2.5V
2.45
2.5
2.55
V
Input Bias Current
II(BIAS)
-0.3
-1
μA
Open Loop Voltage Gain
GVO
VOUT =2V~4V
65
90
dB
Unity Gain Bandwidth
GBW
0.7
1
MHz
Power Supply Rejection Ratio
PSRR
VCC =12V~25V
60
70
dB
Output Sink Current
ISINK
VFB =2.7V, COMP=1.1V
2
6
mA
Output Source Current
ISOURCE
VFB =2.3V, COMP =5V
-0.5
-0.8
mA
VOH
VFB =2.3V, RL =15kΩ to GND
5
6
V
Output Voltage Swing High State
VOL
VFB =2.7V, RL =15kΩ to GND
0.7
1.1
V
CURRENT-SENSE SECTION
Current Sense Input Voltage Gain
GV
(Note 2,3)
2.85
3
3.15
V/V
Maximum Current Sense Input
Threshold
VTH
COMP =5V (Note 2)
0.9
1
1.1
V
Power Supply Rejection Ratio
PSRR
VCC =12V~25V (Note 2)
70
dB
Input Bias Current
II(BIAS)
-2
-10
μA
Propagation Delay
tD
VFB =0V~2V
150
300
ns
OUTPUT SECTION
IOH =-20mA
13
13.5
V
High-Level Output Voltage
VOH
IOH =-200mA
12
13.5
V
IOL =20mA
0.1
0.4
V
Low-Level Output Voltage
VOL
IOL =200mA
1.5
2.2
V
Under-Voltage Lockout
Output Voltage
VUVLO
VCC =5V, IOL=1mA
0.7
1.2
V
Output Voltage Rise Time
tR
CL =1nF, TJ = 25°C
50
150
ns
Output Voltage Fall Time
tF
CL =1nF, TJ = 25°C
50
150
ns



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