ELECTRICAL CHARACTERISTICS (Unless otherwise stated,these specifications apply for -25 < Tamb <
85°C for UC2824X;0 < Tamb <70°C forUC384X;Vi=15V (note 5); RT= 10K;CT= 3.3nF)
Symbol Parameter Test Conditions UC284X UC384X Unit
Min. Typ. Max. Min. Typ. Max.
REFERENCE SECTION
VREF Output Voltage Tj=25
°
CI
o
= 1mA 4.95 5.00 5.05 4.90 5.00 5.10 V
∆VREF Line Regulation 12V ≤Vi≤25V 620 620mV
∆
V
REF Load Regulation 1≤Io≤20mA 625 625mV
∆V
REF/∆TTemperature Stability (Note 2) 0.2 0.4 0.2 0.4 mV/°C
Total Output Variant Line, Load, Temperature (2) 4.9 5.1 4.82 5.18 V
eNOutput Noise Voltage 10Hz ≤f≤10KHz Tj=25°C
(2) 50 50 µV
Long Term Stability Tamb = 125°C, 1000Hrs (2) 525 525mV
I
SC Output Short Circuit -30 -100 -180 -30 -100 -180 mA
OSCILLATOR SECTION
fsInitial Accuracy Tj=25
°
C (6) 47 52 57 47 52 57 KHz
Voltage Stability 12 ≤Vi≤25V 0.2 1 0.2 1 %
Temperature Stability TMIN ≤Tamb ≤TMAX (2) 55%
V
4Amplitude VPIN4 Peak to Peak 1.7 1.7 V
ERROR AMP SECTION
V2Input Voltage VPIN1 = 2.5V 2.45 2.50 2.55 2.42 2.50 2.58 V
IbInput Bias Current -0.3 -1 -0.3 -2 µA
AVOL 2≤Vo≤4V 65 90 65 90 dB
B Unity Gain Bandwidth (2) 0.7 1 0.7 1 MHz
SVR Supply Voltage Rejection 12V ≤Vi≤25V 60 70 60 70 dB
IoOutput Sink Current VPIN2 = 2.7V VPIN1 = 1.1V 2 6 2 6 V
IoOutput Source Current VPIN2 = 2.3V VPIN1 = 5V -0.5 -0.8 -0.5 -0.8 mA
VOUT High VPIN2 = 2.3V;
RL= 15KΩto Ground 56 56 V
V
OUT Low VPIN2 = 2.7V;
RL= 15KΩto Pin 8 0.7 1.1 0.7 1.1 V
CURRENT SENSE SECTION
GVGain (3 & 4) 2.85 3 3.15 2.8 3 3.2 V/V
V3Maximum Input Signal VPIN1 = 5V (3) 0.9 1 1.1 0.9 1 1.1 V
SVR Supply Voltage Rejection 12 ≤Vi≤25V (3) 70 70 dB
IbInput Bias Current -2 -10 -2 -10 µA
Delay to Output 150 300 150 300 ns
OUTPUT SECTION
IOL Output Low Level ISINK = 20mA 0.1 0.4 0.1 0.4 V
ISINK = 200mA 1.5 2.2 1.5 2.2 V
IOH Output High Level ISOURCE = 20mA 13 13.5 13 13.5 V
ISOURCE = 200mA 12 13.5 12 13.5 V
trRise Time Tj=25
°
CC
L
= 1nF (2) 50 150 50 150 ns
tfFall Time Tj=25°CC
L
= 1nF (2) 50 150 50 150 ns
UC2842/3/4/5-UC3842/3/4/5
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