UC2842/3/4/5-UC3842/3/4/5
ELECTRICAL CHARACTERISTICS
(Unless otherwise stated, these specifications apply 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)
Symbo l
Parameter
T est Cond ition s
REFERENCE SECTION
V
REF
∆
V
REF
∆
V
REF
∆V
REF
/∆T
e
N
Output Voltage
Line Regulation
Load Regulation
Temperature Stability
Total Output Variant
Output Noise Voltage
Long Term Stability
I
SC
f
s
Output Short Circuit
OSCILLATOR SECTION
Initial Accuracy
Voltage Stability
Temperature Stability
V
4
V
2
I
b
B
SVR
I
o
I
o
Amplitude
Input Voltage
Input Bias Current
A
VOL
Unity Gain Bandwidth
Supply Voltage Rejection
Output Sink Current
Output Source Current
V
OUT
High
V
OUT
Low
2
≤
V
o
≤
4V
(2)
12V
≤
V
i
≤
25V
V
PIN2
= 2.7V V
PIN1
= 1.1V
V
PIN2
= 2.3V V
PIN1
= 5V
V
PIN2
= 2.3V;
R
L
= 15K
Ω
to Ground
V
PIN2
= 2.7V;
R
L
= 15K
Ω
to Pin 8
CURRENT SENSE SECTION
G
V
V
3
SVR
I
b
Gain
Maximum Input Signal
Supply Voltage Rejection
Input Bias Current
Delay to Output
OUTPUT SECTION
I
OL
I
OH
t
r
t
f
Output Low Level
Output High Level
Rise Time
Fall Time
I
SINK
= 20mA
I
SINK
= 200mA
ISOURCE = 20mA
I
SOURCE
= 200mA
T
j
= 25
°
C
T
j
= 25°C
C
L
= 1nF (2)
C
L
= 1nF (2)
13
12
0.1
1.5
13.5
13.5
50
50
150
150
0.4
2.2
13
12
0.1
1.5
13.5
13.5
50
50
150
150
0.4
2.2
V
V
V
V
ns
ns
(3 & 4)
V
PIN1
= 5V (3)
12
≤
V
i
≤
25V (3)
2.85
0.9
3
1
70
-2
150
-10
300
3.15
1.1
2.8
0.9
3
1
70
-2
150
-10
300
3.2
1.1
V/V
V
dB
µ
A
ns
65
0.7
60
2
-0.5
5
T
j
= 25
°
C (6)
12
≤
V
i
≤
25V
T
MIN
≤
T
amb
≤
T
MAX
(2)
V
PIN4
Peak to Peak
ERROR AMP SECTION
V
PIN1
= 2.5V
2.45 2.50 2.55 2.42 2.50 2.58
-0.3
90
1
70
6
-0.8
6
0.7
1.1
-1
65
0.7
60
2
-0.5
5
-0.3
90
1
70
6
-0.8
6
0.7
1.1
-2
V
µ
A
dB
MHz
dB
V
mA
V
V
47
52
0.2
5
1.7
57
1
47
52
0.2
5
1.7
57
1
KHz
%
%
V
T
j
= 25
°
C I
o
= 1mA
12V
≤
V
i
≤
25V
1
≤
I
o
≤
20mA
(Note 2)
Line, Load, Temperature (2)
10Hz
≤
f
≤
10KHz T
j
= 25°C
(2)
T
amb
= 125
°
C, 1000Hrs (2)
-30
4.9
50
5
25
-30
4.95 5.00 5.05 4.90 5.00 5.10
6
6
0.2
20
25
0.4
5.1
4.82
50
5
25
6
6
0.2
20
25
0.4
5.18
V
mV
mV
mV/°C
V
µV
mV
mA
UC284X
UC384X
Uni t
Min. T yp. Max. Min. Typ . Max.
-100 -180
-100 -180
3/11
STMICROELECTRONICS [ STMICROELECTRONICS ]
