UC3843AD1R2 ON Semiconductor, UC3843AD1R2 Datasheet - Page 5
UC3843AD1R2
Manufacturer Part Number
UC3843AD1R2
Description
Other Power Management 52kHz 1A Current PWM
Manufacturer
ON Semiconductor
Type
High Performance Current Mode Controllersr
Datasheet
1.UC3843AN2.pdf
(18 pages)
Specifications of UC3843AD1R2
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
Package / Case
SOIC-8
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
UC3843AD1R2G
Manufacturer:
MITSUBIS
Quantity:
6 219
2.55 V
2.45 V
2.5 V
8.0
5.0
2.0
0.8
9.0
8.5
8.0
7.5
7.0
80
50
20
10 k
−55
V
T
A
CC
= 25°C
Figure 4. Oscillator Discharge Current
= 15 V
−25
20 k
Figure 6. Error Amp Small Signal
Figure 2. Timing Resistor versus
f
OSC
T
A
, AMBIENT TEMPERATURE (°C)
, OSCILLATOR FREQUENCY (Hz)
Oscillator Frequency
0
Transient Response
versus Temperature
50 k
0.5 ms/DIV
25
100 k
UC3842A, UC3843A, UC2842A, UC2843A
50
200 k
75
V
A
T
V
V
V
A
CC
CC
OSC
= −1.0
= 25°C
500 k
= 15 V
= 15 V
100
= 2.0 V
http://onsemi.com
1.0 M
125
5
3.0 V
2.5 V
2.0 V
100
100
5.0
2.0
1.0
50
20
10
90
80
70
60
50
40
800
10 k
I
dischg
V
T
A
CC
V
C
T
1.0 k
= 25°C
A
CC
T
Figure 5. Maximum Output Duty Cycle
= 15 V
= 25°C
= 3.3 nF
Figure 7. Error Amp Large Signal
20 k
= 7.2 mA
Figure 3. Output Deadtime versus
= 15 V
I
dischg
f
OSC
versus Timing Resistor
Transient Response
= 9.5 mA
Oscillator Frequency
, OSCILLATOR FREQUENCY (Hz)
R
T
50 k
, TIMING RESISTOR (W)
2.0 k
0.1 ms/DIV
100 k
3.0 k
200 k
4.0 k
V
A
T
A
V
CC
500 k
= −1.0
= 25°C
= 15 V
6.0 k
1.0 M
8.0 k