UC3843D8 UNITRODE, UC3843D8 Datasheet - Page 6

• 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
6
OSCILLATOR SECTION
OUTPUT SATURATION CHARACTERISTICS
ERROR AMPLIFIER OPEN-LOOP FREQUENCY RESPONSE
For R
GROUND
R
V
T
T
REF
> 5 K f ~
/C
T
8
4
5
R
1.72
T
C
T
R
C
T
T
80
60
40
20
0
10
0.3
4
3
2
1
0
30
10
.01
3
1
1
V
Deadtime vs C
100
CC
.02
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2.2
= 15 V
.03 .04 .05
4.7
Output Current, Source or Sink − A
1 k
f − Frequency − Hz
C
T
10
− nF
T
(R
10 k
.07 .1
T
22
Av
>5 kW)
T
A
= −55 C
47
100 k
SINK SAT (V
T
A
= 25 C
.2
100
SOURCE SAT
(V
.3 .4 .5
1 M
CC −
OL
)
V
OH)
100
30
10
10 M
.7
3
100
0
−45
−90
−135
−180
Timing Resistance vs Frequency
1
f − Frequency − Hz
1 k
10 k
100 k
www.ti.com
1 M