?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?本公司只做全新原装正品，由于电子元件价格波动比较大，所有宝贝价格以当天市场行情而定，为了保障买家的利益，请勿直接拍下并付款，买家请通过旺旺咨询我们，同时，本店承接BOM单，我们会一站式为您配齐，大批量可申请低优惠价格！型号众多，未能一一上传，如果是本店搜索不到的型号，欢迎旺旺咨询，祝您购物愉快!深圳市百盛新纪元半导体有限公司代理品牌：台湾天钰，台湾远翔，纳芯威等品牌。可提供代理证相关技术支持！主营产品：欢迎联系，感谢选择我们，期待您的咨询。PD快充IC：FP6603,FP6605,FP6608FKS4004低内阻NMOS管，可搭配PD快充IC使用QC3.0,PD快充18W方案电源IC，CRE6959VH-S2QC3.0快充识别IC，QC2.0快充识别IC, 手机智能充电识别IC,车充IC, 升压IC, 降压IC, MOS管， LDO, 稳压ICQC3.0快充识别IC:FP6601Q, FP6600QQC2.0快充识别IC:FP6601, FP66002A/3A同步整流车充IC: NS6116, NS6112, NS6312, NS6316, FR9801,FR9888, FR98861A/2A锂电池充电IC: 4054, 4056, 4057, PL7201, FP81021A /2A /3A /锂电池升压IC:FP6291, FP6293, FP6298, FP5139, FP6715, FP6276, FP6277, MT36084.2V /4.35V锂电池保护IC：7071 8205， DW01 8205, 5353A, DW03, DW06LDO稳压IC :HT7550, ?HT7533, ?HT7150, ?HT7133, ?XC6206, ?XC6209,XC6219, ?AMS1117MOS管：SI2300, SI2301, SI2302, AO3400, AO3401, AO3402, SI2305,99269435, 4406, 4953, 4407A, 4410, 8205A AO3407??