[电源技术资料]ZCC3221 28V 高压线性充电芯片，替代CE3221

n INTRODUCTIONnFEATURESThe ZCC3221 is a complete constant-current/ constant-voltage linear charger for single cell lithium rechargeable battery. No external sense resistor is needed, and no blocking diode is required due to the internal P-MOSFET architecture. Furthermore, the ZCC3221 is specifically designed to work with in USB power specifications. Its low external component count makes the ZCC3221 ideally suited for portable applications. Thermal feedback regulates the charge current to limit their temperature during high power operation or high ambient temperature. The charge current can be programmed externally with a single resistor. The ZCC3221 automatically terminates the charge cycle when the charge current drops to 1/10ththe programmed value after the final float voltage is reached. When the input supply (wall adapter or USB supply) is removed, the ZCC3221 automatically enters a low power sleep mode, dropping the battery drain current to less than2mA.The ZCC3221 can be put into shutdownmode, reducing the supply current to 50mA.Other features include battery pack temperature monitor, under voltage lockout, automatic recharge and two status pins to indicate chargingand charge termination.l Charges Single Cell Lithium Battery Directly from USB Port or AC Adapterl Input Voltage Range From4.5V to 24Vl Input OVP：6.5Vl No External MOSFET, Sense Resistor or Blocking Diode Requiredl Preset4.20V/4.35VCharge Voltagel Continuous Programmable Charge Current Up to 1.2Al Recharge Conditioning for Reviving Deeply DischargedCellsandMinimizingHeat Dissipation during Initial Stage of Chargel Constant-Current/Constant- Voltage/Constant-TempOperationwith Thermal Regulation to Maximize Charge Rate Without Risk of Overheatingl Battery Reverse Protectionl Automatic Rechargel Battery Temperature Sensingl Charge state pairs of output, no battery and fault status displayl Charge Current Monitor Output for Gas Gaugingl Automatic Low Power Sleep Mode When Input Supply Voltage is Removedl Soft-Start Limits Inrush ZCC3221替代CE3221.pdf(781.51 KB, 下载次数: 0)2021-6-9 16:25 上传点击文件名下载附件

过孔的基本概念过孔(Via)是多层PCB的重要组成部分之一，钻孔的费用通常占PCB制板费用的30%一40%。简单地说，PCB上的每一个孔都可以称之为过孔。从作用上看，过孔可以分成两类:一是用做各层间的

[DCDC]数字传感器感应探头UV灯紫外杀毒灯额温枪数字传感器感应探头UV灯紫外杀毒灯额温枪驱动芯片驱动方案供应！UCS14266DatasheetRev 0.6 - 1 - © UC 2018Digital Ambient Light Sensor and Proximity SensorDescriptionUCS14266 是一款整合了先进的环境光，先进的接近传感器和高效的红外线 LED 光学数字转换器，环境光传感器（ALS）内置光学滤波器，用于抑制红 外，并提供接近人眼响应的光谱。 ALS 可以在黑暗到阳光直射下工作，可选择的检测范围约为 40d

寻找8.7V 双节锂电池充电管理芯寻找锂电池的电压：8.7V（两节，一节电压4.35V），充电电流：4A，需要充电亮绿灯，充满亮红灯，两个指示灯。适配器上出来的电压10-12V。有合适芯片的请留言，谢谢！**此帖已被管理员删除**
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