UC384XA - UC284XA
Table 4. Thermal Data
Symbol
R
th 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 < T
amb
< 85°C for UC284XA;
0 < T
amb
< 70°C for UC384XA; V
i
= 15V (note 5); R
T
= 10K; C
T
= 3.3nF)
Symbol
Parameter
Test Condition
UC284XA
Min.
4.95
Typ.
5.00
2
3
0.2
4.9
50
5
-30
T
j
= 25°C
V
CC
= 12V to 25V
T
A
= T
low
to T
high
(peak to peak)
T
J
= 25°C
V
PIN1
= 2.5V
V
FB
= 5V
2V
≤
V
o
≤
4V
T
J
= 25°C
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
= 15KΩ to
Ground
V
PIN2
= 2.7V;R
L
= 15KΩ to
Pin 8
(note 3 & 4)
V
PIN1
= 5V (note 3)
12
≤
V
i
≤
25V (note 3)
2.85
0.9
65
0.7
60
2
-0.5
5
47
–
–
–
7.8
2.45
-100
52
0.2
5
1.6
8.3
2.50
-0.1
90
1
70
12
-1
6.2
0.8
1.1
25
-180
57
1
–
–
8.8
2.55
-1
65
0.7
60
2
-0.5
5
-30
47
–
–
–
7.8
2.42
5.1
4.82
50
5
-100
52
0.2
5
1.6
8.3
2.50
-0.1
90
1
70
12
-1
6.2
0.8
1.1
25
-180
57
1
–
–
8.8
2.58
-2
Max.
5.05
20
25
UC384XA
Min.
4.90
Typ.
5.00
2
3
0.2
5.18
Max.
5.10
20
25
Unit
REFERENCE SECTION
V
REF
∆V
REF
∆V
REF
Output Voltage
Line Regulation
Load Regulation
Total Output Variation
e
N
Output Noise Voltage
Long Term Stability
T
j
= 25°C I
o
= 1mA
12V
≤
V
i
≤
25V
1
≤
I
o
≤
20mA
(Note 2)
Line, Load, Temperature
10Hz
≤
f
≤
10KHz
T
j
= 25°C (note 2)
T
amb
V
mV
mV
mV/°C
V
µV
mV
mA
KHz
%
%
V
mA
V
µA
dB
MHz
dB
mA
mA
V
V
∆V
REF
/∆T Temperature Stability
= 125°C,
1000Hrs
(note 2)
I
SC
f
OSC
Output Short Circuit
Frequency
OSCILLATOR SECTION
∆f
OSC
/∆V Frequency Change with Volt.
∆V
REF
/∆T Frequency Change with Temp.
V
OSC
I
dischg
V
2
I
b
BW
PSRR
I
o
I
o
Oscillator Voltage Swing
Discharge Current (V
OSC
=2V)
Input Voltage
Input Bias Current
A
VOL
Unity Gain Bandwidth
Power Supply Rejec. Ratio
Output Sink Current
Output Source Current
V
OUT
High
V
OUT
Low
CURRENT SENSE SECTION
G
V
V
3
SVR
I
b
Gain
Maximum Input Signal
Supply Voltage Rejection
Input Bias Current
Delay to Output
3
1
70
-2
150
-10
300
3.15
1.1
2.85
0.9
3
1
70
-2
150
-10
300
3.15
1.1
V/V
V
dB
µA
ns
ERROR AMP SECTION
3/16
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