Yi Electronics Co., Ltd. of Shenzhen City, the production and sales of professional power supply IC, DC / DC boost chip 5V, 3V, 3.3V, adjustable output voltage boost IC, LDO Regulator 6206 series enables end series LDO, low voltage detection Reset IC, backlight driver IC, LED driver IC, MOS pipe and other products, the main range of applications: portable products, MP3, MP4, PMP, digital camera, optical mouse, LED lights, remote control toys, electronic dictionaries, video machines , wireless headphones, wireless mouse and keyboard, sphygmomanometer, medical equipment, car alarm, LED flashlight, DC shengdeng, solar lawn light, chargers, electric keyboard toy products, LCM, interface converters, instrumentation, flashing lights, there Clock display product control circuit. 0755-83597112-631 Kang: 13530003715 http://www.szlianyi.com.cn Address: Futian District, Shenzhen Xinzhou Road, Building A, LY3085 嘉葆润 Golden Tower is a complete single-cell lithium-ion battery constant pressure linear charging IC. it uses a very small SOT-23-5 package, you only need low external component, it can really apply to applications for portable products. Moreover, LY3083 is designed for USB power characteristics and design. Meanwhile, LY3085 also be used as a stand-alone linear Li-Ion battery charger. because it has a sound internal MOSFET architecture, so without any external sense resistor and a diode. while working in high-load or high-temperature environments, thermal feedback will be automatically controlled charging current to control the temperature of the wafer. charging voltage is fixed at 4.2V, charging current is not connected through a resistor to set in not charging current through a resistor to set in after the charging voltage reaches the full charge voltage, charge current drops to 1/10 of the current value when, LY3085 will automatically stop charging when the power supply (general power adapter or USB supply) is removed, LY3085 automatically enters a low current mode, when the battery current consumption of less than 2uA.LY3083 but also into a shutdown mode, in some mode, the supply current is reduced to 25uA. it also has other features, including the charge current monitoring, low voltage shutdown, automatic recharge, otherwise a status pin to indicate charge completed or external power supply is connected to the input voltage Vcc:. 4.25V-6V Features: * Charging current programmable up to 800mA * no external MOSFET, sense resistor and diode * overtemperature protection with constant voltage charging so distressed. charge faster without worrying about overheating * Available for single-cell Li-ion battery charging from the USB port directly;. * Preset 4.2V charge voltage accuracy of plus or minus 1%; * current shutdown mode only 25UA of technical support; * Trickle Charge Threshold 2.9V; * can be set to no trickle charge mode * Soft-start, can effectively limit the inrush current; * SOT23-5 package small patch Alternative Model OPC8020, LTC4054, HL5100, APL3202, LM2054. , UCT3054, EUP8054, TQ7051 Applications: mobile phone, PDA, MP3 player, chargers, Bluetooth devices Y3085 is a complete single-cell lithium-ion battery constant voltage linear charger IC which uses tiny SOT-23-5 package, you only need low external component, it can really apply to applications for portable products. Moreover, LY3085 is designed for USB power characteristics and design. Alternative market is tp4054, ME4054, etc., and have resolved intrusion (after the battery is fully charged, the LED micro-light) situations prone to the old version of 4054.