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?General Description Features?Typical charge cycle（1000mAh battery）?ME4057 is a complete constant-current/constant?voltage linear charger for single cell lithium-ion batteries.?With a thermally enhanced 8-PIN SOP package on the?bottom and low external component count make the?ME4057 ideally suited for portable applications.?Furthermore the ME4057 is specifically designed to work?within USB power specifications.?No external sense resistor is needed and no blocking?diode is required due to the internal PMOSFET?architecture .Thermal feedback regulates the charge?current to limit the die temperature during high power?operation or high ambient temperature .The charge voltage?is fixed at 4.2V / 4.34V, and the charge current can be?programmed externally with a single resistor. The ME4057?automatically terminates the charge cycle when the charge?current drops to 1/10?th?the programmed value after the final?float voltage is reached.?When the input supply (wall adapter or USB supply) is?removed the ME4057 automatically enters a low current?state dropping the battery drain current to less than?2μA.The ME4057 can be put into shutdown mode reducing?the supply current to 55μA.?Other features include Battery temperature monitor,?under-voltage lockout, automatic recharge and two status?pins to indicate charge and charge termination.?●Protection of battery cell reverse connection?● Programmable charge current up to 1A?●No MOSFET sense resistor or blocking diode?required?●Complete linear Charger in SOP8 Package for?single Cell Lithium-Ion Batteries.?●Constant-Current/Constant-Voltage operation?with thermal regulation to maximize Rate?Without risk of overheating.?● Preset 4.2V / 4.34V charge voltage with ±1?accuracy?● Automatic Recharge?● Two Status Indication for Charge status, no?battery and battery failure indicators?● C/10 charge termination?● 55μA supply current in shutdown?● 2.9V trickle current charge threshold?● Soft-Start limits inrush current?● Battery Temperature Sensing?● Available in SOP8-PP package?Applications?●Cellular Telephones?●Digital Still Cameras?●MP3 Players?●Bluetooth Applications?●Portable Devices?●USB Bus-Powered Chargers?本公司只做全新原裝正品，由于電子元件價(jià)格波動(dòng)比較大，所有寶貝價(jià)格以當(dāng)天市場(chǎng)行情而定，為了保障買家的利益，請(qǐng)勿直接拍下并付款，買家請(qǐng)通過旺旺咨詢我們，同時(shí)，本店承接BOM單，我們會(huì)一站式為您配齊，大批量可申請(qǐng)低優(yōu)惠價(jià)格！型號(hào)眾多，未能一一上傳，如果是本店搜索不到的型號(hào)，歡迎旺旺咨詢，祝您購物愉快!深圳市百盛新紀(jì)元半導(dǎo)體有限公司代理品牌：臺(tái)灣天鈺，臺(tái)灣遠(yuǎn)翔，納芯威等品牌�？商峁┐碜C相關(guān)技術(shù)支持！主營產(chǎn)品：歡迎聯(lián)系，感謝選擇我們，期待您的咨詢。PD快充IC：FP6603,FP6605,FP6608FKS4004低內(nèi)阻NMOS管，可搭配PD快充IC使用QC3.0,PD快充18W方案電源IC，CRE6959VH-S2QC3.0快充識(shí)別IC，QC2.0快充識(shí)別IC, 手機(jī)智能充電識(shí)別IC,車充IC, 升壓IC, 降壓IC, MOS管， LDO, 穩(wěn)壓ICQC3.0快充識(shí)別IC:FP6601Q, FP6600QQC2.0快充識(shí)別IC:FP6601, FP66002A/3A同步整流車充IC: NS6116, NS6112, NS6312, NS6316, FR9801,FR9888, FR98861A/2A鋰電池充電IC: 4054, 4056, 4057, PL7201, FP81021A /2A /3A /鋰電池升壓IC:FP6291, FP6293, FP6298, FP5139, FP6715, FP6276, FP6277, MT36084.2V /4.35V鋰電池保護(hù)IC：7071 8205， DW01 8205, 5353A, DW03, DW06LDO穩(wěn)壓IC :HT7550, ?HT7533, ?HT7150, ?HT7133, ?XC6206, ?XC6209,XC6219, ?AMS1117MOS管：SI2300, SI2301, SI2302, AO3400, AO3401, AO3402, SI2305,99269435, 4406, 4953, 4407A, 4410, 8205A AO3407??