UC2843AD ON Semiconductor, UC2843AD Datasheet - Page 6
UC2843AD
Manufacturer Part Number
UC2843AD
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 UC2843AD
Output Voltage Range
4.95 V to 5.05 V
Input Voltage Range
30 V
Operating Temperature Range
- 25 C to + 85 C
Mounting Style
SMD/SMT
Package / Case
SOIC-14
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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− 20
−4.0
−8.0
100
−12
−16
−20
−24
80
60
40
20
0
0
10
0
Figure 8. Error Amp Open Loop Gain and
Figure 12. Reference Load Regulation
Figure 10. Reference Voltage Change
100
20
I
ref
T
Phase versus Frequency
, REFERENCE SOURCE CURRENT (mA)
A
= 125°C
versus Source Current
1.0 k
40
Gain
f, FREQUENCY (Hz)
2.0 ms/DIV
T
10 k
A
60
= 25°C
UC3842A, UC3843A, UC2842A, UC2843A
100 k
V
I
T
O
80
A
CC
= 1.0 mA to 20 mA
T
= 25°C
V
V
R
T
A
= 15 V
A
CC
O
L
= 55°C
= 25°C
= 100 K
= 2.0 V to 4.0 V
= 15 V
V
1.0 M
Phase
CC
100
= 15 V
http://onsemi.com
10 M
120
0
30
60
90
120
150
180
6
110
1.2
1.0
0.8
0.6
0.4
0.2
90
70
50
0
−55
0
Figure 11. Reference Short Circuit Current
V
Figure 9. Current Sense Input Threshold
CC
Figure 13. Reference Line Regulation
−25
= 15 V
versus Error Amp Output Voltage
T
A
V
= 125°C
T
O
2.0
A
T
, ERROR AMP OUTPUT VOLTAGE (V)
A
= 25°C
0
, AMBIENT TEMPERATURE (°C)
versus Temperature
2.0 ms/DIV
25
T
A
= −55°C
4.0
50
V
T
A
CC
75
= 25°C
= 12 V to 25 V
6.0
V
R
CC
L
≤ 0.1 W
= 15 V
100
125
8.0