UC3843AD1013TR STMicroelectronics, UC3843AD1013TR Datasheet - Page 7
![IC CONTROL CUR MODE PWM 8 SOIC](/photos/1/38/13851/497-8-soic_sml.jpg)
UC3843AD1013TR
Manufacturer Part Number
UC3843AD1013TR
Description
IC CONTROL CUR MODE PWM 8 SOIC
Manufacturer
STMicroelectronics
Datasheet
1.UC3843AD1013TR.pdf
(15 pages)
Specifications of UC3843AD1013TR
Pwm Type
Current Mode
Number Of Outputs
1
Frequency - Max
500kHz
Duty Cycle
100%
Voltage - Supply
8.2 V ~ 25 V
Buck
No
Boost
Yes
Flyback
Yes
Inverting
No
Doubler
No
Divider
No
Cuk
No
Isolated
Yes
Operating Temperature
0°C ~ 70°C
Package / Case
8-SOIC (3.9mm Width)
Frequency-max
500kHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-2338-2
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
UC3843AD1013TR
Manufacturer:
ST
Quantity:
20 000
Figure 9: Output Saturation Voltage vs. Load
Figure 11: Output Waveform.
Figure 13: Oscillator and Output Waveforms.
10%
90%
V
(V)
-1
-2
3
2
1
0
sat
0
R
C
T
T
Current.
V
80 s Pulsed Load 120Hz Rate
V
i
=15V
T
i
A
=-40˚C
T
200
A
=25˚C
Sink Saturation
(Load to V
Source Saturation
(Load to Ground)
8
4
50ns/DIV
400
PWM
I
D
i
)
CLOCK
T
OSCILLATOR
T
A
600
A
=25˚C
5V REG
=-40˚C
7
5
V
C
T
D95IN341
GND
A
i
V
GND
L
=15V
i
I
= 1.0nF
= 25°C
O
(mA)
6
Figure 10: Supply Current vs. Supply Voltage.
Figure 12: Output Cross Conduction
OUTPUT
UC2842A/3A/4A/5A - UC3842A/3A/4A/5A
I
(mA)
V
CC
20
15
10
O
I
5
0
i
0
OUTPUT
OUTPUT
CT
CT
10
LARGE R
SMALL R
100ns/DIV
20
T
T
/LARGE C
/SMALL C
D95IN344
30
R
C
V
I
T
Sense
A
FB
T
T
=25˚C
=10K
=3.3nF
=0V
V
C
T
T
T
D95IN342
A
i
=0V
L
100mA/DIV
=30V
= 15pF
= 25°C
20V/DIV
V
i
(V)
7/15