LTC3557

量产

具锂离子电池充电器和三个降压型稳压器的USB电源管理器

数据手册产品选型表

产品模型: 4

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产品详情

可在输入电源之间进行无缝切换：锂离子电池、USB、5V 墙上适配器或具 Bat-Track^™ 功能的高电压降压型稳压器
当输入电流受限或不能提供输入电流时，200mΩ 内部理想二极管和可选的外部理想二极管控制器提供了低损耗电源路径
三路、可调高效率降压型开关稳压器 (600mA、400mA、400mA I_OUT)
可利用引脚来选择的突发模式 (Burst Mode^®) 操作
全功能锂离子/锂聚合物电池充电器
1.5A 最大充电电流和热限制功能
电池浮动电压：
- 4.2V (LTC3557)
- 4.1V (LTC3557-1)
扁平 4mm x 4mm 28 引脚 QFN 封装

参考资料

ADI 始终高度重视提供符合最高质量和可靠性水平的产品。我们通过将质量和可靠性检查纳入产品和工艺设计的各个范围以及制造过程来实现这一目标。出货产品的“零缺陷”始终是我们的目标。查看我们的质量和可靠性计划和认证以了解更多信息。

产品型号	引脚/封装图-中文版	文档	CAD 符号，脚注和 3D模型
LTC3557EUF#PBF	28-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3557EUF#TRPBF	28-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3557EUF-1#PBF	28-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC3557EUF-1#TRPBF	28-Lead QFN (4mm x 4mm x 0.75mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

这是最新版本的数据手册

硬件生态系统

部分模型	产品周期	描述
按钮控制器 1
LTC2955	推荐新设计使用	具自动接通功能的按钮接通 / 关断控制器
低压热插拔控制器 1
LTC4361	推荐新设计使用	过压 / 过流保护控制器
库仑计（电池电量计） 1
LTC2942	不推荐用于新设计	具温度、电压测量功能的电池电量测量芯片
双电源监控器 1
LTC2960	推荐新设计使用	36V、纳安级电流、两输入电压监视器

部分模型	产品周期	描述
LTC2942	不推荐用于新设计	具温度、电压测量功能的电池电量测量芯片

评估套件

LT3557EUF-1/LT3505EDD Demo Board | PMIC Plus HV Buck, USB Power Manager with 0.5A Li-Ion Charger and Three Bucks Plus HV Buck Controller

立即购买更多内容

产品详情

The DC1138A-B contains the LTC3557-1 Power Management Integrated Circuit (PMIC) plus the LT3505EDD 36V (40V transients) buck regulator. The LTC3557-1 (4.1V charge voltage) includes a PowerPath controller, a 1.5A battery charger (configured for 500mA), an ideal diode, an always-on LDO, three synchronous step-down switching regulators (600mA and 2 × 400mA ), as well as a buck regulator VC controller.

Designed specifically for USB applications, the PowerPath controller incorporates a precision input current limit which communicates with the battery charger to ensure that the input current does not violate the USB specification. The ideal diode from BAT to V_OUT guarantees that ample power is always available to V_OUT even if there is insufficient or absent power at VBUS. The LTC3557-1 also has the ability to receive power from a wall adapter or other non-current- limited power source.

资料

DC1138A - Schematic
133.00K

DC1138A - Design File
1.00M

DC1138A - Demo Manual
604.00K

LTC3557EUF/LT3505EDD Demo Board | PMIC Plus HV Buck, USB Power Manager with 0.5A Li-Ion Charger and Three Bucks Plus HV Buck Controller

立即购买更多内容

产品详情

The DC1138A-A contains the LTC3557 Power Management Integrated Circuit (PMIC) plus the LT3505EDD 36V (40V transients) buck regulator. The LTC3557 (4.2V charge voltage) includes a PowerPath controller, a 1.5A battery charger (configured for 500mA), an ideal diode, an always-on LDO, three synchronous step-down switching regulators (600mA and 2 × 400mA ), as well as a buck regulator VC controller.

Designed specifically for USB applications, the PowerPath controller incorporates a precision input current limit which communicates with the battery charger to ensure that the input current does not violate the USB specification. The ideal diode from BAT to V_OUT guarantees that ample power is always available to V_OUT even if there is insufficient or absent power at VBUS. The LTC3557 also has the ability to receive power from a wall adapter or other non-current-limited power source.