Datasheet

ELECTRICAL CHARACTERISTICS (Unless otherwise stated, these specificationsapply for -25 < T
amb
<
85°C for UC2824X; 0 < T
amb
<70°C for UC384X; V
i
= 15V (note 5); R
T
=10K;C
T
= 3.3nF)
Symbol Parameter Test Conditions
UC284X UC384X
Unit
Min. Typ. Max. Min. Typ. Max.
REFERENCE SECTION
V
REF
Output Voltage T
j
=25°CI
o
= 1mA 4.95 5.00 5.05 4.90 5.00 5.10 V
∆V
REF
Line Regulation 12V ≤ V
i
≤ 25V 6 20 6 20 mV
∆V
REF
Load Regulation 1 ≤ I
o
≤ 20mA 6 25 6 25 mV
∆V
REF
/∆T Temperature 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
e
N
Output Noise Voltage 10Hz ≤ f ≤ 10KHz T
j
=25°C
(2)
50 50 µV
Long Term Stability T
amb
= 125°C, 1000Hrs (2) 5 25 5 25 mV
I
SC
Output Short Circuit -30 -100 -180 -30 -100 -180 mA
OSCILLATOR SECTION
f
s
Initial Accuracy T
j
=25°C (6) 47 52 57 47 52 57 KHz
Voltage Stability 12 ≤ V
i
≤ 25V 0.2 1 0.2 1 %
Temperature Stability T
MIN
≤ T
amb
≤ T
MAX
(2) 5 5 %
V
4
Amplitude V
PIN4
Peak to Peak 1.7 1.7 V
ERROR AMP SECTION
V
2
Input Voltage V
PIN1
= 2.5V 2.45 2.50 2.55 2.42 2.50 2.58 V
I
b
Input Bias Current -0.3 -1 -0.3 -2 µA
A
VOL
2 ≤ V
o
≤ 4V 65 90 65 90 dB
B Unity Gain Bandwidth (2) 0.7 1 0.7 1 MHz
SVR Supply Voltage Rejection 12V ≤ V
i
≤ 25V 60 70 60 70 dB
I
o
Output Sink Current VPIN2 = 2.7V V
PIN1
= 1.1V 2 6 2 6 V
I
o
Output Source Current VPIN2 = 2.3V V
PIN1
= 5V -0.5 -0.8 -0.5 -0.8 mA
V
OUT
High V
PIN2
= 2.3V;
R
L
= 15KΩ to Ground
56 56 V
V
OUT
Low V
PIN2
= 2.7V;
R
L
= 15KΩ to Pin 8
0.7 1.1 0.7 1.1 V
CURRENT SENSE SECTION
G
V
Gain (3 & 4) 2.85 3 3.15 2.8 3 3.2 V/V
V
3
Maximum Input Signal V
PIN1
= 5V (3) 0.9 1 1.1 0.9 1 1.1 V
SVR Supply Voltage Rejection 12 ≤ V
i
≤ 25V (3) 70 70 dB
I
b
Input Bias Current -2 -10 -2 -10 µA
Delay to Output 150 300 150 300 ns
OUTPUT SECTION
I
OL
Output Low Level I
SINK
= 20mA 0.1 0.4 0.1 0.4 V
I
SINK
= 200mA 1.5 2.2 1.5 2.2 V
I
OH
Output High Level ISOURCE = 20mA 13 13.5 13 13.5 V
I
SOURCE
= 200mA 12 13.5 12 13.5 V
t
r
Rise Time T
j
=25°CC
L
= 1nF (2) 50 150 50 150 ns
t
f
Fall Time T
j
=25°CC
L
= 1nF (2) 50 150 50 150 ns
UC2842/3/4/5-UC3842/3/4/5
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