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參數(shù)資料
| 型號： | LM828MWC |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHED CAPACITOR CONVERTER, 56 kHz SWITCHING FREQ-MAX, UUC |
| 封裝： | WAFER |
| 文件頁數(shù)： | 2/10頁 |
| 文件大?。?/td> | 221K |
| 代理商： | LM828MWC |
file:///H|/imaging/BITTING/cpl/20020808_1/08062002_10/NATL/08062002_HTML/LM828.html
LM828M5X
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LM828 MWC
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General Description
The LM828 CMOS charge-pump voltage converter inverts a positive voltage in the range of +1.8V to +5.5V
to the corresponding negative voltage of -1.8V to -5.5V. The LM828 uses two low cost capacitors to provide
up to 25 mA of output current.
The LM828 operates at 12 kHz switching frequency to reduce output resistance and voltage ripple. With an
operating current of only 40 A (operating efficiency greater than 96% with most loads), the LM828 provides
ideal performance for battery powered systems. The device is in a tiny SOT-23-5 package.
Features
q
Inverts Input Supply Voltage
q
SOT-23-5 Package
q
20
Typical Output Impedance
q
97% Typical Conversion Efficiency at 5 mA
Applications
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Cellular Phones
q
Pagers
q
PDAs
q
Operational Amplifier Power Supplies
q
Interface Power Supplies
q
Handheld Instruments
[Information as of 5-Aug-2002]
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