The CN3052A is a complete constant-current /constant voltage linear charger for single cell Li-ion and Li Polymer rechargeable batteries. The device contains an on-chip power MOSFET and eliminates the need for the external sense resistor and blocking diode.
上傳時(shí)間： 2013-11-10
上傳用戶：子虛烏有
高的工作電壓高達(dá)100V N雙N溝道MOSFET同步驅(qū)動(dòng) The D810DCDC is a synchronous step-down switching regulator controller that can directly step-down voltages from up to 100V, making it ideal for telecom and automotive applications. The D810DCDC uses a constant on-time valley current control architecture to deliver very low duty cycles with accurate cycle-by-cycle current limit, without requiring a sense resistor. A precise internal reference provides 0.5% DC accuracy. A high bandwidth (25MHz) error amplifi er provides very fast line and load transient response. Large 1Ω gate drivers allow the D810DCDC to drive multiple MOSFETs for higher current applications. The operating frequency is selected by an external resistor and is compensated for variations in VIN and can also be synchronized to an external clock for switching-noise sensitive applications. Integrated bias control generates gate drive power from the input supply during start-up and when an output shortcircuit occurs, with the addition of a small external SOT23 MOSFET. When in regulation, power is derived from the output for higher effi ciency.
上傳時(shí)間： 2013-10-24
上傳用戶：wd450412225
DC/DC 升壓IC：The FP6291 is a current mode boost DC-DC converter. Its PWM circuitry with built-in 0.25 Ω power MOSFET make this regulator highly power efficient. The internal compensation network also minimizes as much as 6 external component counts. The non-inverting input of error amplifier connects to a 0.6V precision reference voltage and internal soft-start function can reduce the inrush current. The FP6291 is available in the SOT23-6L package and provides space-saving PCB for the application fields.
上傳時(shí)間： 2013-11-07
上傳用戶：3294322651
Traditionally, an Electronic Circuit Breaker (ECB) comprisesa MOSFET, a MOSFET controller and a current senseresistor. The LTC®4213 does away with the sense resistorby using the RDS(ON) of the external MOSFET. The resultis a simple, small solution that offers a signifi cant lowinsertion loss advantage at low operating load voltage.The LTC4213 features two circuit breaking responses tovarying overload conditions with three selectable tripthresholds and a high side drive for an external N-channelMOSFET switch.
標(biāo)簽： DFN 檢測(cè)電阻 封裝 電路斷路器
上傳時(shí)間： 2014-03-02
上傳用戶：lixinxiang
The LTC3546 is a dual output current mode buck regulatorwith fl exible output current partitioning. Beyondthe advantages normally associated with dual outputregulators (reduced size, cost, EMI and part count, withimproved effi ciency), the LTC3546’s outputs can bepartitioned for either 3A and 1A outputs, or two 2A outputs.This increases its application range and simplifi esmultiple supply rail designs. A confi gurable Burst Mode®clamp for each output sets the current transition levelbetween Burst Mode operation and forced continuousconduction mode to optimize effi ciency over the entireoutput range. An adjustable switching frequency up to4MHz and internal power MOSFET switches allow forsmall and compact footprints.
上傳時(shí)間： 2013-11-04
上傳用戶：yxgi5
In general, a Hot Swap controller provides two importantfunctions to boards that can be plugged and unpluggedfrom a live backplane:
上傳時(shí)間： 2013-10-23
上傳用戶：行者Xin
為解決直流逆變交流的問題，有效地利用能源，讓電源輸出最大功率，設(shè)計(jì)了高性能的基于IR2101最大功率跟蹤逆變器，并以SPMC75F2413A單片機(jī)作為主控制器。高電壓、高速功率的MOSFET或IGBT驅(qū)動(dòng)器IR2101采用高度集成的電平轉(zhuǎn)換技術(shù)，同時(shí)上管采用外部自舉電容上電，能夠穩(wěn)定高效地驅(qū)動(dòng)MOS管。該逆變器可以實(shí)現(xiàn)DC/AC的轉(zhuǎn)換，最大功率點(diǎn)的跟蹤等功能。實(shí)際測(cè)試結(jié)果表明，該逆變器系統(tǒng)具有跟蹤能力強(qiáng)，穩(wěn)定性高，反應(yīng)靈敏等特點(diǎn)，該逆變器不僅可應(yīng)用于普通的電源逆變系統(tǒng)，而且可應(yīng)用于光伏并網(wǎng)發(fā)電的逆變系統(tǒng)，具有廣泛的市場(chǎng)前景。 Abstract: To solve the problem of DC-AC inverter， and to utilize solar energy more efficiently， the design of maximum power point tracking inverter based on IR2101 was achieved with a high-performance， which can make the system output power maximum. SPMC75F2413A was adopted as main controller. IR2101 is a high voltage， high speed power MOSFET and IGBT driver. It adopted highly integrated voltage level transforming technology， and an external bootstrap capacitor was used， which could drive MOS tube efficiently and stably. Many functions are achieved in the system， such as DC/AC conversion， maximun power point tracking， etc. The actual test result shows that the inverter system has characteristics of strong tracking ability， high stability and reacting quickly. The design can not only be used in ordinary power inverter system， but also be used in photovoltaic power inverter system. The design has certain marketing prospects
上傳時(shí)間： 2013-11-17
上傳用戶：lliuhhui
LTC3803-5是Linear公司的工作在–55℃ 到150℃的固定頻率恒流模式的反激電源控制器,最適合用來驅(qū)動(dòng)高輸入電壓的N-MOSFET.工作電壓可低至5V,輸出電壓精度可達(dá)±1.5%,靜態(tài)電流僅為240uA,主要用在42V和12V汽車電源,通信電源,以太網(wǎng)供電(POE),輔助電源等.本文介紹了LTC3803-5主要特性, 方框圖和多種應(yīng)用電路.
標(biāo)簽： 3803 LTC 反激電源 控制技術(shù)
上傳時(shí)間： 2014-04-30
上傳用戶：chongcongying
本文件包含的資訊可能有所變更,恕不另行通知.HP產(chǎn)品服務(wù)的保固勸列于隨產(chǎn)品及服務(wù)隨附的明確保固聲明中,本文件的任何部份都不可構(gòu)成任何額外的保固.HP不負(fù)責(zé)本文件在技術(shù)上或編輯上的錯(cuò)誤或疏失.
上傳時(shí)間： 2013-11-06
上傳用戶：貓愛薛定諤
鋰電池充電控制器MAX1811的引腳參數(shù)及電路 MAX1811是美信公司生產(chǎn)的USB接口單節(jié)鋰電池充電控制器，它可以直接由USB端口供電，或由其他外部電源供電，電源電壓可達(dá)+6.5V。 1 特性 MAX1811無須微處理器控制，最大充電電壓可由引腳設(shè)置為4.1 V或4.2 V，最大誤差為0.5%。 MAX1811對(duì)電池充電電流可通過邏輯控制電路置為100mA或500mA，符合USB的電流標(biāo)準(zhǔn)。MAX1811工作于線性模式，無須外部電感，內(nèi)置的MOSFET功率開關(guān)有效節(jié)省了線路板尺寸。 當(dāng)采用U部端口電源給電池充電時(shí)，對(duì)于低功率USB端口，應(yīng)將MAX1811芯片的SETI端電位拉低，其充電電流設(shè)定為100mA，對(duì)于高功率的USB端口，應(yīng)將MAX1811芯片的SETI引腳接高電平，此時(shí)充電電流設(shè)定為500mA;將5ETV端接高電平或接低電平，鋰電池的充電電壓分別被設(shè)置為4.2 V或4.1 V。MAX1811的CHG端允許芯片在充電期間點(diǎn)亮LED。
上傳時(shí)間： 2013-10-31
上傳用戶：完瑪才讓
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