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UC3909 具有差动电流感应的铅酸开关模式充电管理 IC

UC3909 描述

The UC3909 family of Switchmode Lead-Acid Battery Chargers accurately controls lead acid battery charging with a highly efficient average current mode control loop. This chip combines charge state logic with average current PWM control circuitry. Charge state logic commands current or voltage control depending on the charge state. The chip includes undervoltage lockout circuitry to insure sufficient supply voltage is present before output switching starts. Additional circuit blocks include a differential current sense amplifier, a 1.5% voltage reference, a \x963.9mV/°C thermistor linearization circuit, voltage and current error amplifiers, a PWM oscillator, a PWM comparator, a PWM latch, charge state decode bits, and a 100mA open collector output driver.

UC2909 UC3909
# Series Cells Multiple
Charge Current(Max)(A) >2
Charge Status Outputs 2 2
Control Topology Switchmode Switchmode
Switching Frequency(kHz) 242
Primary Charge Termination Method Maximum Voltage, Minimum Current Maximum Voltage, Minimum Current
Pin/Package 20PDIP, 20SOIC 20PDIP, 20SOIC
Vin(Max)(V) 40 40
UC3909 特性
UC3909 芯片订购指南
器件 状态 温度 (oC) 价格(美元) 封装 | 引脚 封装数量 | 封装载体 丝印标记
UC3909DW ACTIVE -20 to 70 2.55 | 1ku SOIC (DW) | 20 25 | TUBE  
UC3909DWG4 ACTIVE -20 to 70 2.55 | 1ku SOIC (DW) | 20 25 | TUBE  
UC3909N ACTIVE -20 to 70 2.55 | 1ku PDIP (N) | 20 20 | TUBE  
UC3909NG4 ACTIVE -20 to 70 2.55 | 1ku PDIP (N) | 20 20 | TUBE  
UC3909 质量与无铅数据
器件 环保计划* 铅/焊球涂层 MSL 等级/回流焊峰 环保信息与无铅 (Pb-free) DPPM / MTBF / FIT 率
UC3909DW Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR UC3909DW UC3909DW
UC3909DWG4 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR UC3909DWG4 UC3909DWG4
UC3909N Green (RoHS & no Sb/Br) CU NIPDAU N/A for Pkg Type UC3909N UC3909N
UC3909NG4 Green (RoHS & no Sb/Br) CU NIPDAU N/A for Pkg Type UC3909NG4 UC3909NG4
UC3909 应用技术支持与电子电路设计开发资源下载
  1. UC3909 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器电池管理产品选型与价格 . xls
  3. 照明和显示屏电源选择指南 (PDF 1427 KB)
  4. QFN Layout Guidelines (PDF 1279 KB)
  5. 笔记本电脑指南 (Rev. A) (PDF 2774 KB)
  6. 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A) (PDF 2206 KB)
  7. PowerPADTM Made Easy (PDF 57 KB)
  8. 标准线性产品交叉参考 (Rev. D) (PDF 1058 KB)
  9. 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
  10. 所选封装材料的热学和电学性质 (PDF 645 KB)
  11. 高速数据转换 (PDF 1967 KB)
UC3909 相关工具
名称 型号 工具/软件类型
EV2200 PC 接口板 EV2200 开发电路板/EVM
UC3909 评估模块 UC3909EVM 开发电路板/EVM
温度传感设计软件 TEMPSENSE-SW 分析软件