WMSIC Electronic Components

TI TPS561246DRLR

ModelTPS561246DRLR
PackageSOT-5X3(DRL)|6
BrandTI
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 24+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
TI(Texas Instruments) TPS561246DRLR
Type
TI
Minimum package
4000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TI(Texas Instruments)
Electronic Component
TPS561246DRLR
Electronic Component
1
Package
SOT-5X3(DRL)|6
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.026g
Electronic Component
1
Type
Electronic Component
Synchronous
Electronic Component
Electronic Component
BM0263574192
Operating Temperature
40℃~+125℃@(TJ)
Operating Voltage
4.2V~17V
Switching Frequency
1.28MHz
Electronic Component
Electronic Component
Output Voltage
600mV~7V

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

TPS561246DRLR 同步降压转换器产品概述

一、核心功能定位

TPS561246DRLR是德州仪器(TI)推出的1A输出同步降压转换器,采用降压式拓扑结构,专为需要小封装、高效率、宽输入电压范围的电源设计场景打造。该器件内置同步整流开关管,支持强制连续导通模式(FCCM),可实现低输出纹波与稳定的负载响应,适用于多种工业、消费及汽车电子应用。

二、关键电气参数解析

  1. 输入输出范围:输入电压覆盖4.2V至17V,兼容单节锂电池(4.2V)、12V工业电源、车载12V系统(9V~16V)等常见输入源;输出电压可调范围为600mV至7V,可灵活匹配MCU、传感器、模拟电路等不同负载的电压需求。
  2. 功率与效率:最大输出电流1A,同步整流设计显著降低导通损耗,典型轻载效率超90%;1.28MHz固定开关频率,使外围电感(推荐10μH)、电容(陶瓷电容)尺寸大幅减小,优化系统空间。
  3. 静态与动态特性:静态电流(Iq)仅350μA,适合待机功耗敏感的电池供电设备;FCCM模式下轻载仍保持连续输出,减少纹波波动(典型纹波<50mV),提升负载瞬态响应速度。
  4. 温度适应性:结温(TJ)工作范围为-40℃至+125℃,满足工业级宽温环境(如户外设备、车载电子)的可靠性要求。

三、封装与物理特性

采用SOT-5X3(DRL)封装,6引脚设计,尺寸紧凑(1.6mm×1.6mm×0.8mm),可显著节省PCB布局空间,适合高密度电源模块或小型化终端产品(如便携式设备、物联网节点)。封装引脚功能清晰,简化焊接与调试流程。

四、核心优势与应用场景

1. 设计灵活性

  • 可调输出电压支持用户通过电阻分压灵活设置,无需额外复杂电路;
  • 内置MOS管省去外置开关器件,降低BOM成本与设计复杂度。

2. 宽温可靠性

-40℃至+125℃的结温范围,使其可在极端环境下稳定工作,如工业控制单元、车载辅助传感器、户外通信设备等。

3. 低纹波与抗干扰

FCCM模式下轻载纹波低,配合内置软启动功能,可减少上电冲击,适合对电源噪声敏感的应用(如模拟信号采集、低功耗MCU供电)。

4. 效率优化

同步整流与高频设计结合,在全负载范围内保持较高效率(满载效率超92%),延长电池供电设备的续航时间(如手持终端、可穿戴设备)。

五、典型应用示例

  • 便携式电子:单节锂电池供电的智能手环、便携式检测仪,实现4.2V输入至3.3V/5V输出;
  • 工业控制:12V工业电源转换为PLC模块、传感器的5V/3.3V供电,适应-40℃至+85℃环境;
  • 汽车电子:车载12V电源转换为摄像头、胎压监测模块的3.3V/5V供电,满足宽温与抗EMI需求;
  • 物联网节点:电池供电的物联网终端,低静态电流延长待机时间,小封装适配节点小型化设计。

六、设计注意事项

  • 外围元件需匹配1.28MHz开关频率,建议选用低ESR陶瓷电容与高饱和电流电感;
  • 需根据实际环境温度优化PCB散热(如增加电源引脚铜箔面积),避免结温过高;
  • FCCM模式使能需参考 datasheet 配置引脚,部分应用可通过模式切换平衡效率与纹波。

该器件凭借紧凑封装、宽温特性与灵活设计,成为中小功率电源设计的优选方案,覆盖多领域终端产品的供电需求。

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