ABSOLUTE MAXIMUM RATINGS
(Note 1)
Supply Voltage (Pins 13, 15) . . . . . . . . . . . . . . . . . . . . . . . . 30V
Output Current, Source or Sink (Pins 11, 14)
DC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5A
Pulse (0.5m s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0A
Analog Inputs
(Pins 1, 2, 7). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 7V
(Pin 8, 9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6V
Clock Output Current (Pin 4) . . . . . . . . . . . . . . . . . . . . . . . -5mA
Error Amplifier Output Current (Pin 3) . . . . . . . . . . . . . . . . 5mA
Soft Start Sink Current (Pin 8) . . . . . . . . . . . . . . . . . . . . . 20mA
Oscillator Charging Current (Pin 5) . . . . . . . . . . . . . . . . . . -5mA
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1W
Storage Temperature Range . . . . . . . . . . . . . . -65°C to +150°C
Lead Temperature (Soldering, 10 seconds) . . . . . . . . . . 300°C
CONNECTION DIAGRAMS
DIL-16 (Top View)
J or N Package
UC1825
UC2825
UC3825
SOIC-16 (Top View)
DW Package
PLCC-20 & LCC-20
(Top View)
Q & L Packages
PACKAGE PIN FUNCTION
FUNCTION
PIN
N/C
INV
NI
E/A Out
Clock
N/C
R
T
C
T
Ramp
Soft Start
N/C
ILIM/SD
Gnd
Out A
Pwr Gnd
N/C
V
C
Out B
V
CC
V
REF
5.1V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
THERMAL RATINGS TABLE
Package
DIL-16J
DIL-16N
PLCC-20
LCC-20
SOIC-16
Q
Q
JA
80-120
90
(1)
43-75(1)
70-80
50-120
(1)
Q
JC
28
(2)
45
34
20
(2)
35
Q
2
TI [ TEXAS INSTRUMENTS ]
