UC1825
UC2825
UC3825
ABSOLUTE MAXIMUM RATINGS (Note 1)
Supply Voltage (Pins 13, 15). . . . . . . . . . . . . . . . . . . . . . . . 30V
Output Current, Source or Sink (Pins 11, 14)
DC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5A
Pulse (0.5ms) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0A
Analog Inputs
CONNECTION DIAGRAMS
DIL-16 (Top View)
J or N Package
(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
PACKAGE PIN FUNCTION
FUNCTION
N/C
INV
NI
PIN
PLCC-20 & LCC-20
(Top View)
Q & L Packages
1
2
3
SOIC-16 (Top View)
DW Package
E/A Out
Clock
N/C
4
5
6
RT
7
CT
8
Ramp
Soft Start
N/C
ILIM/SD
Gnd
Out A
Pwr Gnd
N/C
9
10
11
12
13
14
15
16
17
18
19
20
VC
Out B
VCC
VREF 5.1V
THERMAL RATINGS TABLE
Package
DIL-16J
DIL-16N
PLCC-20
LCC-20
QJA
80-120
90(1)
QJC
28(2)
45
43-75(1)
70-80
50-120(1)
34
20(2)
SOIC-16
35
Q
Q
2
TI [ TEXAS INSTRUMENTS ]
