PRODUCT DATABOOK 1996/1997
UC184xA/284xA/384xA
C
URRENT
M
ODE
PWM C
ONTROLLER
P
R O D U C T I O N
D
A T A
S
H E E T
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specifications apply over the operating ambient temperatures for UC384xA with 0°C
≤
T
A
≤
70°C, UC284xA with -40°C
≤
T
A
≤
85°C,
UC184xA with -55°C
≤
T
A
≤
125°C; V
CC
=15V; R
T
=10K; C
T
=3.3nF. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal
to the ambient temperature.)
Parameter
Reference Section
Output Voltage
Line Regulation
Load Regulation
Temperature Stability (Note 2 & 7)
Total Output Variation
Output Noise Voltage (Note 2)
Long Term Stability (Note 2)
Output Short Circuit Current
Symbol
Test Conditions
UC184xA/284xA
UC384xA
Units
Min. Typ. Max. Min. Typ. Max.
4.95 5.00 5.05 4.90 5.00 5.10
6
20
6
20
6
25
6
25
0.2 0.4
0.2 0.4
4.9
5.1 4.82
5.18
50
50
5
25
5
25
-30 -100 -180 -30 -100 -180
47
52
0.2
5
1.7
8.3
57
1
47
52
0.2
5
1.7
8.3
57
1
V
mV
mV
mV/°C
V
µV
mV
mA
kHz
%
%
V
mA
mA
V
µA
dB
MHz
dB
mA
mA
V
V
V/V
V
dB
µA
ns
V
V
V
V
ns
ns
V
V
REF
T
J
= 25°C, I
L
= 1mA
12
≤
V
IN
≤
25V
1
≤
I
O
≤
20mA
Over Line, Load, and Temperature
10Hz
≤
f
≤
10kHz, T
J
= 25°C
T
A
= 125°C, t = 1000hrs
V
N
I
SC
Oscillator Section
Initial Accuracy (Note 6)
Voltage Stability
Temperature Stability (Note 2)
Amplitude (Note 2)
Discharge Current
T
J
= 25°C
12
≤
V
CC
≤
25V
T
MIN
≤
T
A
≤
T
MAX
T
J
= 25°C, V
PIN 4
= 2V
V
PIN 4
= 2V, T
MIN
≤
T
A
≤
T
MAX
V
PIN 1
= 2.5V
I
B
A
VOL
UGBW
PSRR
I
OL
I
OH
V
OH
V
OL
A
VOL
PSRR
I
B
T
pd
V
PIN 1
= 5V
12
≤
V
CC
≤
25V
V
PIN 3
= 0 to 2V
I
SINK
= 20mA
I
SINK
= 200mA
I
SOURCE
= 20mA
I
SOURCE
= 200mA
T
J
= 25°C, C
L
= 1nF
T
J
= 25°C, C
L
= 1nF
V
CC
= 5V, I
SINK
= 10mA
2
≤
V
O
≤
4V
T
j
= 25°C
12
≤
V
CC
≤
25V
V
PIN 2
= 2.7V, V
PIN 1
= 1.1V
V
PIN 2
= 2.3V, V
PIN 1
= 5V
V
PIN 2
= 2.3V, R
L
= 15K to ground
V
PIN 2
= 2.7V, R
L
= 15K to V
REF
7.8
7.5
8.8
8.8
7.8
7.6
8.8
8.8
Error Amp Section
Input Voltage
Input Bias Current
Open Loop Gain
Unity Gain Bandwidth (Note 2)
Power Supply Rejection Ratio (Note 3)
Output Sink Current
Output Source Current
Output Voltage High Level
Output Voltage Low Level
2.45 2.50 2.55 2.42 2.50 2.58
-0.3
-1
-0.3
-2
65
90
65
90
0.7
1
0.7
1
60
70
60
70
2
6
2
6
-0.5 -0.8
-0.5 -0.8
5
6
5
6
0.7 1.1
0.7 1.1
2.85
0.9
3
1
70
-2
150
0.1
1.5
13.5
13.5
50
50
0.7
3.15 2.85
1.1 0.9
-10
300
0.4
2.2
13
12
150
150
1.2
3
1
70
-2
150
0.1
1.5
13.5
13.5
50
50
0.7
3.15
1.1
-10
300
0.4
2.2
Current Sense Section
Gain (Note 3 & 4)
Maximum Input Signal (Note 3)
Power Supply Rejection Ratio (Note 3)
Input Bias Current
Delay to Output (Note 2)
Output Section
Output Low Level
Output High Level
Rise Time (Note 2)
Fall Time (Note 2)
UVLO Saturation
V
OL
V
OH
T
R
T
F
V
SAT
13
12
150
150
1.2
(El ectrical Char acteris tics continu e next page.)
Copyright © 1995
Rev. 1.2 12/95
3
MICROSEMI [ MICROSEMI CORPORATION ]
