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參數資料
| 型號： | L4981BD |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩壓器 |
| 英文描述： | 2 A POWER FACTOR CONTROLLER, 115 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | SO-20 |
| 文件頁數： | 2/16頁 |
| 文件大小： | 2620K |
| 代理商： | L4981BD |
Figure 16: Programmable Under Voltage Lock-
out Thresholds
Table 1: Programmable Under Voltage Lockout Thresholds.
VCC ON
VCC OFF
R22
R23
11V
10V
82k
12k
12V
10.1V
220k
33k
13V
10.5V
430k
62k
14V
10.8V
909k
133k
14.5V
10.9V
1.36M
200k
15V
11V
2.7M
390k
Vl
0.8
1
0.4
0.2
0
45
90
135
Electrical degrees
180
0.8
1
0.4
0.2
0
fsw
Figure 17: Modulation Frequency Normalized in
an Half Cycle of the Mains Voltage
Figure 18: Oscillator Diagram
R22 = R23
6.8
R23 (Kohm)
L4981A - L4981B
10/16
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相關代理商/技術參數 |
參數描述 |
|---|---|
| L4981BD | 制造商:STMicroelectronics 功能描述:POWER FACTOR CORRECTOR SMD 4981 |
| L4981BD013TR | 功能描述:功率因數校正 IC Very High Power RoHS:否 制造商:Fairchild Semiconductor 開關頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel |
| L4981DIE1 | 制造商:STMicroelectronics 功能描述: |
| L4981X | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:POWER FACTOR CORRECTOR |
| L4981XD | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:POWER FACTOR CORRECTOR |
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