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LTC3554
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LTC3554

  • 所属类别：电池管理芯片
  • 产品名称：LTC3554 / LTC3554-1 / LTC3554-2 - 具锂离子电池充电器和两个降压型稳压器的微功率 USB 电源管理器
  • 厂商：LT
  • 生产批号：11+
  • 封装：QFN-20
  • 库存状态：有库存
  • 库存量：20000
  • 最低订购量：1
  • 详细资料：点击查找LTC3554的pdf资料
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  • Product Introduction

LTC3554

LTC3554 / LTC3554-1 / LTC3554-2 - 具锂离子电池充电器和两个降压型稳压器的微功率 USB Power Manager

 

peculiarity

  • 10μA 待机模式静态电流 (所有输出处于接通状态)
  • 可在输入电源之间实现无缝切换：锂离子/ 锂聚合物电池和 USB
  • 240mΩ 内部理想二极管
  • 具可调输出电压的双通道高效率降压型开关稳压器 (200mA IOUT)
  • 具系统复位功能的按钮接通 / 关断控制
  • 复位时间 : 5s (LTC3554 / LTC3554-1), 14s (LTC3554-2)
  • 全功能锂离子/ 锂聚合物电池充电器
  • 可编程充电电流和热限制功能
  • 可在使用电池电量耗尽的情况下实现即时接通型操作
  • 电池浮置电压: 4.2V (LTC3554 / LTC3554-2), 4.1V (LTC3554-1)
  • 3mm x 3mm x 0.75mm 20 引脚 QFN 封装

description

The LTC®3554 series is a micro-power, highly integrated power management and battery charger IC for single-cell lithium-ion/lithium-polymer battery applications. It includes a PowerPathTM manager with automatic load prioritization, a battery charger, an ideal diode, and numerous internal protection features. Designed for USB applications, the LTC3554 power manager automatically limits the maximum input current to 100mA or 500mA. The battery charge current can be automatically reduced so that the sum of the load current and charge current does not exceed the selected input current limit.

The LTC3554 also includes two synchronous step-down switching regulators and a pushbutton controller. In standby mode, when all power supplies are enabled, only 10μA of quiescent current is drawn from the battery. LTC3554 is available in a 3mm x 3mm x 0.75mm 20-pin QFN package  

apply

  • 基于 USB 的手持式产品
  • 基于锂离子/ 锂聚合物电池的便携式电子设备
  • 健身计算机
  • 低功率医疗设备

LTC3554-related ICs include:


Model Manufacturers lot number encapsulation illustrate
LTC3554 LT 11+ QFN-20 LTC3554 / LTC3554-1 / LTC3554-2 - Micro-power USB power manager with lithium-ion battery charger and two step-down regulators
LM3554TME NSC 10+ MICROSMD 1.2A dual high-side synchronous boost converter
LM3554TMX NSC 11+ SMDDIP LED drivers
2SC3554-T1 NEC 08+ SOT89-82 N／A
2SC3554-SL NEC 04+ SOT-89 Brand new original
HLMP-3554 Agilent 07+ DIP Brand new original

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