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USB 電源開關與充電埠控制器

LM3525

現行

0.5A 負載、2.7-5.5V、80mΩ USB 電源開關

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產品規格表

LM3525

現行
產品規格表 立即訂購

產品詳細資料

Product type Fixed current limit, Power switch Vin (min) (V) 2.7 Vin (max) (V) 5.5 Continuous current (max) (A) 0.5 Current limit (A) 1 Operating temperature range (°C) -40 to 125 Enable Active High, Active Low Number of switches 1 Current limit accuracy at 1 A 0.5 Rating Catalog
Product type Fixed current limit, Power switch Vin (min) (V) 2.7 Vin (max) (V) 5.5 Continuous current (max) (A) 0.5 Current limit (A) 1 Operating temperature range (°C) -40 to 125 Enable Active High, Active Low Number of switches 1 Current limit accuracy at 1 A 0.5 Rating Catalog
SOIC (D) 8 29.4 mm² 4.9 x 6
  • Compatible with USB1.1 and USB 2.0
  • 1 ms Fault Flag Delay During Hot-Plug Events
  • Smooth Turn-On Eliminates Inrush Induced Voltage Drop
  • UL Recognized Component: REF # 205202
  • 1A Nominal Short Circuit Output Current Protects Notebook PC Power Supplies
  • Thermal Shutdown Protects Device in Direct Short Condition
  • 500mA Minimum Continuous Load Current
  • Small SOIC-8 Package Minimizes Board Space
  • 2.7V to 5.5V Input Voltage Range
  • Switch Resistance ≤ 120 mΩ Max. at VIN = 5V
  • 1µA Max Standby Current
  • 100 µA Max Operating Current
  • Undervoltage Lockout (UVLO)

All trademarks are the property of their respective owners.

  • Compatible with USB1.1 and USB 2.0
  • 1 ms Fault Flag Delay During Hot-Plug Events
  • Smooth Turn-On Eliminates Inrush Induced Voltage Drop
  • UL Recognized Component: REF # 205202
  • 1A Nominal Short Circuit Output Current Protects Notebook PC Power Supplies
  • Thermal Shutdown Protects Device in Direct Short Condition
  • 500mA Minimum Continuous Load Current
  • Small SOIC-8 Package Minimizes Board Space
  • 2.7V to 5.5V Input Voltage Range
  • Switch Resistance ≤ 120 mΩ Max. at VIN = 5V
  • 1µA Max Standby Current
  • 100 µA Max Operating Current
  • Undervoltage Lockout (UVLO)

All trademarks are the property of their respective owners.

The LM3525 provides Universal Serial Bus standard power switch and over-current protection for all host port applications. The single port device is ideal for Notebook PC and Handheld PC applications that supply power to one port.

A 1 ms delay on fault flag output prevents erroneous overcurrent reporting caused by inrush currents during the hot-plug events.

The LM3525 accepts an input voltage between 2.7V and 5.5V allowing use as a device-based inrush current limiter for 3.3V USB peripherals, as well as Root and Self-Powered Hubs at 5.5V. The Enable input accepts both 3.3V and 5.0V logic thresholds.

The small size, low RON, and 1 ms fault flag delay make the LM3525 a good choice for root hubs as well as ganged power control in space-critical self-powered hubs.

The LM3525 provides Universal Serial Bus standard power switch and over-current protection for all host port applications. The single port device is ideal for Notebook PC and Handheld PC applications that supply power to one port.

A 1 ms delay on fault flag output prevents erroneous overcurrent reporting caused by inrush currents during the hot-plug events.

The LM3525 accepts an input voltage between 2.7V and 5.5V allowing use as a device-based inrush current limiter for 3.3V USB peripherals, as well as Root and Self-Powered Hubs at 5.5V. The Enable input accepts both 3.3V and 5.0V logic thresholds.

The small size, low RON, and 1 ms fault flag delay make the LM3525 a good choice for root hubs as well as ganged power control in space-critical self-powered hubs.
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類型 標題 日期
* Data sheet LM3525 Single Port USB Power Switch and Over-Current Protection datasheet (Rev. D) 2013年 3月 7日
Certificate US-38419-UL Certificate of Compliance IEC 62368-1 2022年 6月 27日
Application note A USB-Powered Lithium-Ion Battery Charger 2003年 3月 6日

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開發板

DDC2256AEVM — DDC2256A 256 通道電流輸入類比轉數位轉換器評估模組

DDC2256AEVM 評估模組 (EVM) 是用於 DDC2256A 的評估套件，這是一款是 256 通道、電流輸入、24 位元類比轉數位 (A/D) 轉換器。EVM 套件由 DUT 電路板和擷取板組成，包含兩個 DDC2256A 裝置、一個用於裝置通訊/配置的 FPGA、用於臨時資料儲存的 36MB 記憶體，以及一個用於連接 PC 的 USB 介面。EVM 包含所有必要的控制訊號及板載功率產生，因而大幅降低對外部設備的需求。最後，評估系統還為 Microsoft® Windows® 提供了易於使用的軟體。

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