ABSOLUTE MAXIMUM RATINGS(Note
1)
Supply Voltage (Low Impedance Source) . . . . . . . . . . . . . . 30V
Supply Voltage (I
CC
< 30mA) . . . . . . . . . . . . . . . . . Self Limiting
Output Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±1A
Output Energy (Capacitive Load) . . . . . . . . . . . . . . . . . . . . 5
µJ
Analog Inputs (Pins 2, 3). . . . . . . . . . . . . . . . . . . -0.3V to +6.3V
Error Amp Output Sink Current . . . . . . . . . . . . . . . . . . . . 10 mA
Power Dissipation at T
A
≤
25°C
(DIL−8) . . . . . . . . . . . . . . . . .
1 W
Power Dissipation at T
A
≤
25°C (SOIC-14) . . . . . . . . . 725 mW
Storage Temperature Range . . . . . . . . . . . . . . -65°C to +150°C
Junction Temperature Range . . . . . . . . . . . . . -55°C to +150°C
Lead Temperature (soldering, 10 seconds) . . . . . . . . . . . 300°C
Note 1:
All voltages are with respect to Pin 5.
All currents are positive into the specified terminal.
Consult Packaging Section of Databook for thermal
limitations and considerations of packages.
UC1842/3/4/5
UC2842/3/4/5
UC3842/3/4/5
CONNECTION DIAGRAMS
DIL-8, SOIC-8 (TOP VIEW)
N or J Package, D8 Package
PLCC-20 (TOP VIEW)
Q Package
PACKAGE PIN FUNCTION
FUNCTION
PIN
1
N/C
COMP
2
N/C
3
N/C
4
V
FB
5
N/C
6
I
SENSE
7
N/C
8
N/C
9
R
T
/C
T
10
N/C
11
PWR GND
12
GROUND
13
N/C
14
OUTPUT
15
N/C
16
V
C
17
V
CC
18
N/C
19
V
REF
20
SOIC-14, CFP-14. (TOP VIEW)
D or W Package
DISSIPATION RATING TABLE
Package
W
TA
≤
25°C
Power Rating
700 mW
Derating Factor
Above TA
≤
25°C
5.5 mW/°C
TA
≤
70°C
Power Rating
452 mW
TA
≤
85°C
Power Rating
370 mW
TA
≤
125°C
Power Rating
150 mW
2
TI [ TEXAS INSTRUMENTS ]
