UC1842A/3A/4A/5A
UC2842A/3A/4A/5A
UC3842A/3A/4A/5A
ABSOLUTE MAXIMUM RATINGS (Note 1)
CONNECTION DIAGRAMS
DIL-8, SOIC-8 (TOP VIEW)
J or N, D8 Package
Supply Voltage (Low Impedance Source) . . . . . . . . . . . . . . 30V
Supply Voltage (ICC mA). . . . . . . . . . . . . . . . . . . . . Self Limiting
Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1A
±
Output Energy (Capacitive Load). . . . . . . . . . . . . . . . . . . . . 5µJ
Analog Inputs (Pins 2, 3) . . . . . . . . . . . . . . . . . . -0.3V to +6.3V
Error Amp Output Sink Current . . . . . . . . . . . . . . . . . . . . 10mA
Power Dissipation at TA ≤ 25°C (DIL-8) . . . . . . . . . . . . . . . . 1W
Storage Temperature Range . . . . . . . . . . . . . -65°C to +150°C
Lead Temperature (Soldering, 10 Seconds) . . . . . . . . . . 300°C
Note 1. All voltages are with respect to Ground, Pin 5. Currents
are positive into, negative out of the specified terminal. Consult
Packaging Section of Databook for thermal limitations and con-
siderations of packages. Pin numbers refer to DIL package only.
PACKAGE PIN FUNCTION
PLCC-20, LCC-20
(TOP VIEW)
Q, L Packages
FUNCTION
N/C
PIN
1
SOIC-14 (TOP VIEW)
D Package
Comp
N/C
VFB
2
3-4
5
N/C
6
ISENSE
N/C
RT/CT
N/C
Pwr Gnd
Gnd
N/C
Output
N/C
VC
VCC
N/C
7
8-9
10
11
12
13
14
15
16
17
18
19
20
VREF
ELECTRICAL CHARACTERISTICS Unless otherwise stated, these specifications apply for -55°C ≤ TA ≤ 125°C for the
UC184xA; -40°C ≤ TA ≤ 85°C for the UC284xA; 0 ≤ TA ≤ 70°C for the UC384xA; VCC = 15V (Note 5); RT = 10k; CT = 3.3nF; TA = TJ; Pin
numbers refer to DIL-8.
UC184xA\UC284xA
UC384xA
PARAMETER
TEST CONDITIONS
UNITS
MIN. TYP. MAX. MIN. TYP. MAX.
Reference Section
Output Voltage
TJ = 25°C, IO = 1mA
4.95
4.9
5.00
6
5.05
20
4.90
4.82
5.00
6
5.10
20
V
mV
Line Regulation
12 ≤ VIN ≤ 25V
Load Regulation
Temp. Stability
1 ≤ IO ≤ 20mA
6
25
6
25
mV
(Note 2, Note 7)
0.2
0.4
5.1
0.2
0.4
5.18
mV/°C
V
Total Output Variation
Output Noise Voltage
Line, Load, Temp.
10Hz ≤ f ≤ 10kHz
TJ = 25°C (Note 2)
TA = 125°C, 1000Hrs. (Note 2)
50
5
50
5
µV
mV
mA
Long Term Stability
Output Short Circuit
Oscillator Section
Initial Accuracy
25
25
-30
47
-100
-180
-30
47
-100
-180
TJ = 25°C (Note 6)
52
0.2
5
57
1
52
0.2
5
57
1
kHz
%
Voltage Stability
Temp. Stability
12 ≤ VCC ≤ 25V
TMIN ≤ TA ≤ TMAX (Note 2)
VPIN 4 peak to peak (Note 2)
TJ = 25°C, VPIN 4 = 2V (Note 8)
VPIN 4 = 2V (Note 8)
%
Amplitude
1.7
8.3
1.7
8.3
V
Discharge Current
7.8
7.5
8.8
8.8
7.8
7.6
8.8
8.8
mA
mA
2
TI [ TEXAS INSTRUMENTS ]
