UC2844A Ver la hoja de datos (PDF) - STMicroelectronics
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UC2844A Datasheet PDF : 16 Pages
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UC384XA - UC284XA
Table 4. Thermal Data
Symbol
Rth j-amb
Parameter
Thermal Resistance Junction-ambient
Max.
DIP-8
100
SO-8
150
Unit
°C/W
Table 5. Electrical Characteristcs
( [note 1] Unless otherwise stated, these specifications apply for -25 < Tamb < 85°C for UC284XA;
0 < Tamb < 70°C for UC384XA; Vi = 15V (note 5); RT = 10K; CT = 3.3nF)
Symbol
Parameter
Test Condition
REFERENCE SECTION
VREF Output Voltage
Tj = 25°C Io= 1mA
∆VREF Line Regulation
12V ≤ Vi ≤ 25V
∆VREF Load Regulation
1 ≤ Io ≤ 20mA
∆VREF/∆T Temperature Stability
(Note 2)
Total Output Variation
Line, Load, Temperature
eN Output Noise Voltage
10Hz ≤ f ≤ 10KHz
Tj = 25°C (note 2)
Long Term Stability
Tamb = 125°C, 1000Hrs
(note 2)
ISC Output Short Circuit
OSCILLATOR SECTION
fOSC Frequency
Tj = 25°C
∆fOSC/∆V Frequency Change with Volt. VCC = 12V to 25V
∆VREF/∆T Frequency Change with Temp. TA = Tlow to Thigh
VOSC Oscillator Voltage Swing (peak to peak)
Idischg Discharge Current (VOSC =2V) TJ = 25°C
ERROR AMP SECTION
V2 Input Voltage
VPIN1 = 2.5V
Ib
Input Bias Current
VFB = 5V
AVOL
2V ≤ Vo ≤ 4V
BW Unity Gain Bandwidth
TJ = 25°C
PSRR Power Supply Rejec. Ratio 12V ≤ Vi ≤ 25V
Io
Output Sink Current
VPIN2 = 2.7V
VPIN1= 1.1V
Io
Output Source Current
VPIN2 = 2.3V VPIN1 = 5V
VOUT High
VPIN2 = 2.3V;RL = 15KΩ to
Ground
VOUT Low
VPIN2 = 2.7V;RL = 15KΩ to
Pin 8
CURRENT SENSE SECTION
GV Gain
(note 3 & 4)
V3 Maximum Input Signal
VPIN1 = 5V (note 3)
SVR Supply Voltage Rejection 12 ≤ Vi ≤ 25V (note 3)
Ib
Input Bias Current
Delay to Output
UC284XA
UC384XA
Unit
Min. Typ. Max. Min. Typ. Max.
4.95 5.00 5.05 4.90 5.00 5.10 V
2 20
2 20 mV
3 25
3 25 mV
0.2
0.2
mV/°C
4.9
5.1 4.82
5.18 V
50
50
µV
5 25
5 25 mV
-30 -100 -180 -30 -100 -180 mA
47 52 57 47 52 57 KHz
– 0.2 1
– 0.2 1
%
–
5
–
–
5
–
%
– 1.6 –
– 1.6 –
V
7.8 8.3 8.8 7.8 8.3 8.8 mA
2.45 2.50 2.55 2.42 2.50 2.58 V
-0.1 -1
-0.1 -2 µA
65 90
65 90
dB
0.7 1
0.7 1
MHz
60 70
60 70
dB
2 12
2 12
mA
-0.5 -1
-0.5 -1
mA
5 6.2
5 6.2
V
0.8 1.1
0.8 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
3/16
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