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USB 电源开关和充电端口控制器

TPS2046B

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低电平有效的双通道、0.25A 负载、2.7-5.5V、70mΩ USB 电源开关

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TPS2046B

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产品详情

Product type Fixed current limit, Power switch Vin (min) (V) 2.7 Vin (max) (V) 5.5 Continuous current (max) (A) 0.25 Current limit (A) 0.5 Operating temperature range (°C) -40 to 125 Enable Active Low Number of switches 2 Current limit accuracy at 1 A 0.4 Rating Catalog
Product type Fixed current limit, Power switch Vin (min) (V) 2.7 Vin (max) (V) 5.5 Continuous current (max) (A) 0.25 Current limit (A) 0.5 Operating temperature range (°C) -40 to 125 Enable Active Low Number of switches 2 Current limit accuracy at 1 A 0.4 Rating Catalog
SOIC (D) 8 29.4 mm² 4.9 x 6
  • 70-m High-Side MOSFET
  • 250-mA Continuous Current
  • Thermal and Short-Circuit Protection
  • Accurate Current Limit (0.3 A min, 0.7 A max)
  • Operating Range: 2.7 V to 5.5 V
  • 0.6-ms Typical Rise Time
  • Undervoltage Lockout
  • Deglitched Fault Report (OC)
  • No OC Glitch During Power Up
  • Maximum Standby Supply Current: 1-µA (Single and Dual) or 2-µA (Triple)
  • Bidirectional Switch
  • Ambient Temperature Range: -40°C to 85°C
  • ESD Protection
  • UL Pending
  • APPLICATIONS
    • Heavy Capacitive Loads
    • Short-Circuit Protections
  • 70-m High-Side MOSFET
  • 250-mA Continuous Current
  • Thermal and Short-Circuit Protection
  • Accurate Current Limit (0.3 A min, 0.7 A max)
  • Operating Range: 2.7 V to 5.5 V
  • 0.6-ms Typical Rise Time
  • Undervoltage Lockout
  • Deglitched Fault Report (OC)
  • No OC Glitch During Power Up
  • Maximum Standby Supply Current: 1-µA (Single and Dual) or 2-µA (Triple)
  • Bidirectional Switch
  • Ambient Temperature Range: -40°C to 85°C
  • ESD Protection
  • UL Pending
  • APPLICATIONS
    • Heavy Capacitive Loads
    • Short-Circuit Protections

The TPS204xB/TPS2055B power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered. These devices incorporate 70-m N-channel MOSFET power switches for power-distribution systems that require multiple power switches in a single package. Each switch is controlled by a logic-enable input. Gate drive is provided by an internal charge pump designed to control the power-switch rise times and fall times to minimize current surges during switching. The charge pump requires no external components and allows operation from supplies as low as 2.7 V.

When the output load exceeds the current-limit threshold or a short is present, the device limits the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OCx) logic output low. When continuous heavy overloads and short-circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal protection circuit shuts off the switch to prevent damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures that the switch remains off until valid input voltage is present. This power-distribution switch is designed to set current limit at 0.5 A typically.

The TPS204xB/TPS2055B power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered. These devices incorporate 70-m N-channel MOSFET power switches for power-distribution systems that require multiple power switches in a single package. Each switch is controlled by a logic-enable input. Gate drive is provided by an internal charge pump designed to control the power-switch rise times and fall times to minimize current surges during switching. The charge pump requires no external components and allows operation from supplies as low as 2.7 V.

When the output load exceeds the current-limit threshold or a short is present, the device limits the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OCx) logic output low. When continuous heavy overloads and short-circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal protection circuit shuts off the switch to prevent damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures that the switch remains off until valid input voltage is present. This power-distribution switch is designed to set current limit at 0.5 A typically.
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技术文档

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类型 标题 下载最新的英语版本 日期
* 数据表 Current-Limited Power-Distribution Switches 数据表 (Rev. C) 2007年 10月 4日
证书 US-36986-UL Certificate of Compliance IEC 62368-1 2021年 3月 12日
EVM 用户指南 Two-Channel, Power-Distribution Switch EVM (Rev. A) 2012年 6月 1日

设计和开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

参考设计

TIDA-00624 — 具有 DFP 控制器的 USB Type-A 转 USB TypeC SS（超高速）MUX 参考设计

该适配器可将 USB 标准主机 A 类端口转换为 C 类 DFP（面向下游的端口），同时对默认的 1.5A 和 3.0A VBUS 电流电平提供支持。TUSB2522 通过将 2:1 USB 3.1（高达 10 Gbps）多路复用器与 DFP 控制器相集成来监控 C 类配置通道 (CC) 引脚从而简化此设计，进而可确定多路复用器选择的插头方向以及用于控制 VCONN 和 VBUS 电源开关的器件连接。
测试报告: PDF
原理图: PDF
封装 引脚 CAD 符号、封装和 3D 模型
SOIC (D) 8 Ultra Librarian
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订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

支持和培训

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