UC3843D8 UNITRODE, UC3843D8 Datasheet - Page 2

• Manufacturer Part Number: UC3843D8
• Description: PWM CONTROLLER, SMD, 3843, SOIC8
• Manufacturer: UNITRODE

Specifications of UC3843D8

• Input Voltage: 15V
• Output Voltage: 5V
• Output Current: 200mA
• Frequency: 500kHz
• Power Dissipation Pd: 650mW
• Supply Voltage Range: 12V To 25V
• Digital Ic Case Style: SOIC
• No. Of Pins: 8
• Operating: RoHS Compliant

UC1842/3/4/5
UC2842/3/4/5
UC3842/3/4/5
SLUS223C – APRIL 1997 – REVISED JUNE 2007
2
ABSOLUTE MAXIMUM RATINGS
(1) All voltages are with respect to Pin 5. All currents are positive into the specified terminal. Consult Packaging Section of Databook for
Supply voltage
Output current
Output energy (capacitive load)
Analog inputs (Pins 2, 3)
Error amp output sink current
Power dissipation
Storage temperature range
Junction temperature range
Lead temperature (soldering, 10 seconds)
thermal limitations and considerations of packages.
COMP
I
NC − No internal connection
SENSE
R
T
V
NC
NC
NC
/C
N or J PACKAGE, D8 PACKAGE
FB
COMP
I
SENSE
R
T
T
V
/C
FB
D or W PACKAGE
T
SOIC-14, CFP-14
DIL-8, SOIC-8
(TOP VIEW)
(TOP VIEW)
1
2
3
4
5
6
7
1
2
3
4
Low impedance source
I
T
T
T
CC
A
A
A
< 30 mA
25 C (DIL-8)
25 C (SOIC-14)
25 C (SOIC-8)
14
13
12
10
11
8
7
6
5
9
8
(1)
V
V
OUTPUT
GROUND
CONNECTION DIAGRAMS
REF
CC
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V
NC
V
V
OUTPUT
GROUND
PWR GND
REF
CC
C
I
SENSE
V
NC
NC
NC
FB
4
5
6
7
8
3 2 1 20 19
9 10 11 12 13
Q PACKAGE
(TOP VIEW)
PLCC-20
18
17
16
15
14
V
V
NC
OUTPUT
NC
CC
C
–65 C to 150 C
–55 C to 150 C
–0.3 V to 6.3 V
Self Limiting
725 mW
650 mW
10 mA
300 C
UNIT
30 V
5 J
1 W
1 A
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