CONNECTION DIAGRAMS
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Supply Voltage (Low Impedance Source) . . . . . . . . . . . . . . 30V
Supply Voltage (I
CC
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 T
A
≤
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.
UC1842A/3A/4A/5A
UC2842A/3A/4A/5A
UC3842A/3A/4A/5A
PLCC-20, LCC-20
(TOP VIEW)
Q, L Packages
PACKAGE PIN FUNCTION
FUNCTION
PIN
N/C
1
Comp
2
N/C
3-4
V
FB
5
N/C
6
I
SENSE
7
N/C
8-9
R
T
/C
T
10
N/C
11
Pwr Gnd
12
Gnd
13
N/C
14
Output
15
N/C
16
V
C
17
V
CC
18
N/C
19
V
REF
20
SOIC-14 (TOP VIEW)
D Package
DIL-8, SOIC-8 (TOP VIEW)
J or N, D8 Package
SOIC-WIDE16 (TOP VIEW)
DW Package
N/C
N/C
COMP
VFB
ISENSE
RT/CT
N/C
N/C
1
2
3
4
5
6
7
8
16 N/C
15 VREF
14 VCC
13 VCC
12 OUTPUT
11 GND
10 PWRGND
9 N/C
2
TI [ TEXAS INSTRUMENTS ]
