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UC2843AAD-TR View Datasheet(PDF) - Microsemi Corporation

Part Name
Description
Manufacturer
UC2843AAD-TR
Microsemi
Microsemi Corporation Microsemi
UC2843AAD-TR Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
PRODUCT DATABOOK 1996/1997
UC184xA/284xA/384xA
CURRENT MODE PWM CONTROLLER
PR O D U C T I O N D ATA S H E E T
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specifications apply over the operating ambient temperatures for UC384xA with 0°C TA 70°C, UC284xA with -40°C TA 85°C,
UC184xA with -55°C TA 125°C; VCC=15V; RT=10K; CT=3.3nF. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal
to the ambient temperature.)
Parameter
Reference Section
Symbol
Test Conditions
UC184xA/284xA
UC384xA
Units
Min. Typ. Max. Min. Typ. Max.
Output Voltage
Line Regulation
Load Regulation
Temperature Stability (Note 2 & 7)
Total Output Variation
Output Noise Voltage (Note 2)
Long Term Stability (Note 2)
Output Short Circuit Current
Oscillator Section
VREF TJ = 25°C, IL = 1mA
12 VIN 25V
1 IO 20mA
Over Line, Load, and Temperature
VN 10Hz f 10kHz, TJ = 25°C
TA = 125°C, t = 1000hrs
ISC
4.95 5.00 5.05 4.90 5.00 5.10
6 20
6 20
6 25
6 25
0.2 0.4
0.2 0.4
4.9
5.1 4.82
5.18
50
50
5 25
5 25
-30 -100 -180 -30 -100 -180
V
mV
mV
mV/°C
V
µV
mV
mA
Initial Accuracy (Note 6)
Voltage Stability
Temperature Stability (Note 2)
Amplitude (Note 2)
Discharge Current
Error Amp Section
TJ = 25°C
12 VCC 25V
TMIN TA TMAX
TJ = 25°C, VPIN 4 = 2V
VPIN 4 = 2V, TMIN TA TMAX
47 52 57 47 52 57 kHz
0.2 1
0.2 1
%
5
5
%
1.7
1.7
V
7.8 8.3 8.8 7.8 8.3 8.8 mA
7.5
8.8 7.6
8.8 mA
Input Voltage
Input Bias Current
Open Loop Gain
Unity Gain Bandwidth (Note 2)
Power Supply Rejection Ratio (Note 3)
Output Sink Current
Output Source Current
Output Voltage High Level
Output Voltage Low Level
Current Sense Section
Gain (Note 3 & 4)
Maximum Input Signal (Note 3)
Power Supply Rejection Ratio (Note 3)
Input Bias Current
Delay to Output (Note 2)
Output Section
IB
AVOL
UGBW
PSRR
IOL
IOH
VOH
VOL
AVOL
PSRR
IB
Tpd
VPIN 1 = 2.5V
2 VO 4V
Tj = 25°C
12 VCC 25V
VPIN 2 = 2.7V, VPIN 1 = 1.1V
VPIN 2 = 2.3V, VPIN 1 = 5V
VPIN 2 = 2.3V, RL = 15K to ground
VPIN 2 = 2.7V, RL = 15K to VREF
VPIN 1 = 5V
12 VCC 25V
VPIN 3 = 0 to 2V
2.45 2.50 2.55 2.42 2.50 2.58 V
-0.3 -1
-0.3 -2 µA
65 90
65 90
dB
0.7 1
0.7 1
MHz
60 70
60 70
dB
26
26
mA
-0.5 -0.8
-0.5 -0.8
mA
56
56
V
0.7 1.1
0.7 1.1 V
2.85 3 3.15 2.85 3 3.15 V/V
0.9 1 1.1 0.9 1 1.1 V
70
70
dB
-2 -10
-2 -10 µA
150 300
150 300 ns
Output Low Level
Output High Level
Rise Time (Note 2)
Fall Time (Note 2)
UVLO Saturation
VOL
ISINK = 20mA
ISINK = 200mA
VOH
ISOURCE = 20mA
ISOURCE = 200mA
TR
TJ = 25°C, CL = 1nF
TF TJ = 25°C, CL = 1nF
VSAT VCC = 5V, ISINK = 10mA
0.1 0.4
0.1 0.4 V
1.5 2.2
1.5 2.2 V
13 13.5
13 13.5
V
12 13.5
12 13.5
V
50 150
50 150 ns
50 150
50 150 ns
0.7 1.2
0.7 1.2 V
(Electrical Characteristics continue next page.)
Copyright © 1995
Rev. 1.2a 10/25
3
 

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