- 制造厂商:AD
- 产品类别:PMIC 和多功能
- 技术类目:电池充电器+DC/DC
- 功能描述:具双路降压型稳压器的线性 USB 电池充电器
- (AD代理渠道,提供当日发货、严格的质量标准,满足您的目标价格)
LTC3559 是一款具双路高效率降压型稳压器的 USB 电池充电器。该器件非常适合为那些需要多个电源轨、基于单节锂离子/锂聚合物电池的手持式应用供电。
电池充电电流可通过 PROG 引脚和 HPWR 引脚来设置,BAT 引脚能够提供高达 950mA 的电流。电池充电器具有一个用于实现适宜温度充电的NTC输入。CHRG 引脚使得能够在充电过程中对电池状态进行连续监视。一个内部定时器负责控制充电器终止。
每个单片式同步降压型稳压器可提供高达 400mA 的输出电流,并在整个锂离子/锂聚合物电池电压范围内实现 90% 以上的运作效率。MODE 引脚提供了将两个降压型稳压器均置于节能的突发模式操作状态或低噪声脉冲跳跃模式的灵活性。
LTC3559/LTC3559-1 采用扁平、耐热增强型 16 引脚 (3mm x 3mm) QFN 封装。
应用
- 基于 SD/闪存的 MP3 播放器
- 低功率手持式应用
电池充电器
降压型稳压器
LTC3559EUD#PBF,封装:16-Lead QFN (3mm x 3mm x 0.75mm w/ EP),包装形式及数量:管装,121,工作温度:-40 to 125C,AD官网报价:2.89(100-499个);2.43(1000+个)
LTC3559EUD#TRPBF,封装:16-Lead QFN (3mm x 3mm x 0.75mm w/ EP),包装形式及数量:卷带,2500,工作温度:-40 to 125C,AD官网报价:2.89(100-499个);2.43(1000+个)
LTC3559EUD-1#PBF,封装:16-Lead QFN (3mm x 3mm x 0.75mm w/ EP),包装形式及数量:管装,121,工作温度:-40 to 125C,AD官网报价:2.95(100-499个);2.43(1000+个)
LTC3559EUD-1#TRPBF,封装:16-Lead QFN (3mm x 3mm x 0.75mm w/ EP),包装形式及数量:卷带,2500,工作温度:-40 to 125C,AD官网报价:2.95(100-499个);2.43(1000+个)
DC1085A:LTC3559EUD Demo Board | USB Li-Ion Linear Charger w/ Dual 400mA Buck Regulators
Demonstration circuit 1085 is a Linear USB Battery Charger with Dual Buck Regulators featuring the LTC3559. The LTC3559 is a CC/CV 5V/USB linear battery charger with dual high efficiency buck regulators. The part is ideally suited to power single cell 4.2V Li-Ion/Polymer-based handheld applications needing multiple supply rails. The DC1085 has a 4.35V to 5.5V input voltage range and is configured to provide up to 500mA of charge current, though the part is capable of providing up to 950mA. The battery charger has an NTC input for temperature qualified charging. Each monolithic synchronous buck regulator provides up to 400mA of output current while operating at efficiencies greater than 90% over the entire Li-Ion/Polymer range. The buck output voltages are set at 2.5V and 1.2V.