UC3843ADR2 ON Semiconductor, UC3843ADR2 Datasheet - Page 7

• Manufacturer Part Number: UC3843ADR2
• Description: IC CTRLR CURRENT MODE HP 14SOIC
• Manufacturer: ON Semiconductor
• Type: High Performance Current Mode Controllersr

Specifications of UC3843ADR2

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 500kHz
• Duty Cycle: 96%
• Voltage - Supply: 8.2 V ~ 25 V
• Buck: No
• Boost: No
• Flyback: Yes
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Frequency-max: 500kHz
• Output Voltage Range: 4.9 V to 5.1 V
• Input Voltage Range: 30 V
• Operating Temperature Range: 0 C to + 70 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: UC3843ADR2OSTR

−1.0
−2.0
3.0
2.0
1.0
0
0
0
Figure 16. Output Cross Conduction
Figure 14. Output Saturation Voltage
V
CC
T
T
A
A
200
= −55°C
I
= 25°C
O
, OUTPUT LOAD CURRENT (mA)
versus Load Current
Sink Saturation
(Load to V
100 ns/DIV
Source Saturation
(Load to Ground)
T
A
400
= −55°C
CC
UC3842A, UC3843A, UC2842A, UC2843A
)
80 ms Pulsed Load
600
V
C
T
120 Hz Rate
V
GND
A
CC
L
CC
= 25°C
= 15 pF
= 30 V
T
= 15 V
A
= 25°C
http://onsemi.com
800
7
90%
10%
25
20
15
10
5
0
0
Figure 17. Supply Current versus
Figure 15. Output Waveform
10
V
CC
Supply Voltage
, SUPPLY VOLTAGE
50 ns/DIV
20
R
C
V
T
I
Sense
A
FB
T
T
30
V
C
T
= 25°C
A
= 10 k
CC
= 3.3 nF
L
= 0 V
= 25°C
= 1.0 nF
= 15 V
= 0 V
40