UC3844N ON Semiconductor, UC3844N Datasheet - Page 5
UC3844N
Manufacturer Part Number
UC3844N
Description
IC CTRLR CURRENT MODE HP 8DIP
Manufacturer
ON Semiconductor
Type
High Performance Current Mode Controllersr
Datasheet
1.UC3845DR2.pdf
(16 pages)
Specifications of UC3844N
Pwm Type
Current Mode
Number Of Outputs
1
Frequency - Max
60kHz
Duty Cycle
50%
Voltage - Supply
11.5 V ~ 25 V
Buck
No
Boost
Yes
Flyback
Yes
Inverting
Yes
Doubler
No
Divider
No
Cuk
No
Isolated
Yes
Operating Temperature
0°C ~ 70°C
Package / Case
8-DIP (0.300", 7.62mm)
Frequency-max
60kHz
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
Through Hole
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
UC3844NOS
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
UC3844N
Manufacturer:
MOTOROLA/摩托罗拉
Quantity:
20 000
−1.0
−2.0
−4.0
−8.0
−12
−16
−20
−24
3.0
2.0
1.0
0
0
0
0
0
Figure 10. Reference Load Regulation
Figure 12. Output Saturation Voltage
Figure 8. Reference Voltage Change
20
V
CC
I
ref
T
T
T
A
, REFERENCE SOURCE CURRENT (mA)
A
A
200
= −55°C
I
= 25°C
O
= 125°C
versus Source Current
, OUTPUT LOAD CURRENT (mA)
versus Load Current
40
Sink Saturation
Source Saturation
(Load to V
(Load to Ground)
2.0 ms/DIV
T
T
A
400
A
60
= −55°C
= 25°C
CC
)
V
I
T
O
A
CC
80
= 1.0 mA to 20 mA
T
= 25°C
A
= 15 V
= −55°C
600
80 ms Pulsed Load
GN
V
120 Hz Rate
D
V
CC
CC
100
T
A
= 15 V
= 15 V
= 25°C
http://onsemi.com
120
800
5
90%
10%
110
90
70
50
−55
Figure 9. Reference Short Circuit Current
Figure 11. Reference Line Regulation
−25
Figure 13. Output Waveform
T
A
0
, AMBIENT TEMPERATURE (°C)
versus Temperature
2.0 ms/DIV
25
50 ns/DIV
50
V
T
A
CC
75
= 25°C
= 12 V to 25 V
V
C
T
V
R
A
CC
L
CC
L
= 25°C
= 1.0 nF
≤ 0.1 W
= 15 V
= 15 V
100
125