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參數(shù)資料
| 型號(hào)： | UC3844TD |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER |
| 中文描述： | 高性能電流模式PWM控制器 |
| 文件頁數(shù)： | 7/15頁 |
| 文件大?。?/td> | 228K |
| 代理商： | UC3844TD |
0
200
400
600
I
O
(mA)
0
1
2
3
-2
-1
V
sat
(V)
D95IN341
V
i
=15V
80
μ
s Pulsed Load 120Hz Rate
T
A
=-40C
T
A
=25C
V
i
T
A
=-40C
T
A
=25C
GND
Sink Saturation
(Load to V
i
)
Source Saturation
(Load to Ground)
Figure 10:
Output Saturation Voltagevs. Load
Current.
0
10
20
30
V
i
(V)
0
5
10
15
20
I
i
(mA)
U
U
R
T
=10K
C
T
=3.3nF
V
FB
=0V
I
Sense
=0V
T
A
=25C
D95IN342
Figure 11:
Supply Current vs. Supply Voltage.
Figure 12:
Output Waveform.
Figure 13:
Output Cross Conduction
5V REG
OSCILLATOR
PWM
CLOCK
8
4
5
6
R
T
C
T
GND
OUTPUT
7
V
i
I
D
CT
OUTPUT
LARGE R
T
/SMALL C
T
CT
OUTPUT
SMALL R
T
/LARGE C
T
D95IN344
Figure 14:
Oscillator and Output Waveforms.
V
i
=15V
C
L
= 1.0nF
T
A
= 25°C
90%
10%
50ns/DIV
V
i
=30V
C
L
= 15pF
T
A
= 25°C
V
O
I
CC
100ns/DIV
100mA/DIV
20V/DIV
U3842T - UC3843T - UC3844T - UC3845T
7/15
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| UC3844TN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
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| UC3844Y | 制造商:TI 制造商全稱:Texas Instruments 功能描述:CURRENT MODE PWM CONTROLLER |
| UC3845 | 制造商:STMicroelectronics 功能描述:3845 |
| UC3845A | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Current Mode PWM Controller |
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