LP3120概述/LP3120 General Description：
LP3120是一款低噪音、固定頻率的電荷泵DC/DC變換器，使用整倍數(shù)轉(zhuǎn)換，在DC-DC應用中提高效率。由此，當輸入電壓為1.8V~4.5V時，LP3120可提供固定的電壓或高至270mA的電流。當輸入電壓為2.7V~5.5V時，可提供固定的電壓或高至270mA的電流。 只需3個外接電容。熱關(guān)斷保護設(shè)置，在VOUT到GND持續(xù)短路的情況下自我保護。內(nèi)置的軟啟動系統(tǒng)有效防止啟動時過大電流的沖擊。將內(nèi)部開關(guān)頻率設(shè)定為400KHz，因而能夠采用小表面貼裝型電容器。關(guān)斷時負載和VIN斷開，從而使靜態(tài)電流低于1μA。LP3120采用小外型SOT-23-6封裝。
The LP3120 is a high performance charge pump DC/DC converter that produces a regulated 5V output.No external inductor is required for operation. The operating voltage range is 2.8V to V OUT . Internal soft-start circuitry effectively reduces the in-rush current both while start-up and mode change.The LP3120 features very low quiescent current, over current protection and short circuit protection.The LP3120 is available in SOT23-6 package.
LP3120特性//LP3120 Features:
低噪音持續(xù)頻率工作
輸出電流：高達250mA
自動軟啟動
輸入電壓范圍：2.7V~5.0V
無需電感
400KHz開關(guān)頻率
超低停機電流：ICC＜1μA;
LP3120提供SOT-23-6封裝(無鉛封裝)
2x Mode for Ultra-High Efficiency
2.8V to V OUT Range Input Voltage
Soft Start Function
Built-In Short-Circuit Protection
340KHz Fixed frequency
Built-in Thermal Protection
Over Current Protection Function
I SD <1uA in Shutdown
LP3120 SOT23-6 Package
RoHS Compliant and 100% Lead (Pb)-Free
LP3120應用/LP3120 Applications:
蜂窩電話
數(shù)碼相機
MP3播放器
PDA、筆記本電腦
GPS接收機
LCD Panel
Cellular and Smart mobile phone
PDA/DSC
Flash LED Driver
LP3120 Order Information:
LP3120 Typical Application Circuit:
LP3120 Marking Information:
| Device | Marking | |
| LP3120B6F | LPS D3YWX |
|
| Marking indication: Y:Production year W:Production week X: Series Number |
||
LP3120 Functional Pin Description:
LP3120 Function Block Diagram:
LP3120 Application Information:
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