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參數(shù)資料
| 型號(hào)： | LM3544 |
| 廠商： | National Semiconductor Corporation |
| 元件分類(lèi)： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Quad Port USB Power Distribution Switch and Over-Current Protection |
| 中文描述： | 四端口USB電源配電開(kāi)關(guān)和過(guò)電流保護(hù) |
| 文件頁(yè)數(shù)： | 7/13頁(yè) |
| 文件大?。?/td> | 349K |
| 代理商： | LM3544 |
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Typical Performance Characteristics
specified. (Continued)
V
IN
= 5.0, I
OUT_X
= 500mA, T
A
= 25C unless otherwise
Turn-On/Turn-Off Response with 47
/33μF Load
Turn-On/Turn-Off Response with 10
/33μF Load
10120818
10120819
Enable Into a Short
(Note 10)
Short Connected to Enabled Device
(Note 10)
10120820
10120821
Over-Current Response with Ramped Load
on OUT1 and Fixed Load on OUT2
(Note 10)
Inrush Current to Downstream Device
when LM3544 is Enabled
(Note 11)
10120822
10120823
Note 10:
Output is shorted to Ground through a 100 m
resistor.
Note 11:
Load is two capacitors and one resistor in parallel to model an actual USB load condition. The first capacitor has a value of 33 μF to model the LM3544
output capacitor. The second capacitor has a value of 10 μF to model the maximum allowable input capacitance of the downstream device. The resistor is a 47
resistor to model the maximum allowable input resistance of the downstream device.
L
www.national.com
7
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