標題: 請推薦 -2.5V輸出的LDO [打印本頁] 作者: chienchun 時間: 2008-1-2 05:48 PM 標題: 請推薦 -2.5V輸出的LDO 因為要給OP和INA ±2.5V的POWER SOURCE
目前是用LM337來設計,
我有找到MAX1735...但只提供200mA輸出..
不曉得還有沒有其他的 -2.5v Negative Linear Regulator, 請各位推薦一下,謝謝!作者: chienchun 時間: 2008-1-8 11:34 AM
請推薦一下-2.5v Negative Linear Regulator
謝謝!作者: sjhor 時間: 2008-1-16 02:54 PM
試試看這個吧!! 網路上找的 不知道何不合乎需求?
The UCC384 family of negative linear series pass regulators is tailored for low drop out applications where low quiescent power is important. Fabricated with a
BCDMOS technology ideally suited for low input to output differential applications, the UCC384 will pass 0.5A while requiring only 0.2V of input voltage headroom.
Drop out voltage decreases linearly with output current, so that drop out at 50mA is less than 20mV. Quiescent current consumption for the device under normal
(non-drop out) conditions is typically 200μA. An integrated charge pump is internally enabled only when the device is operating near drop out with low VIN. This guarantees that the device will meet the drop out specifications even for maximum load current and a VIN of –3.2V with only a modest increase in quiescent current.
Quiescent current is always less than 350μA, with the charge pump enabled. Quiescent current of the UCC384 does not increase with load current.