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USB 電源開關與充電埠控制器

LM3526

現行

2 通道、0.5A 負載、2.7-5.5V、100mΩ USB 電源開關

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產品規格表

LM3526

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) 1.2 Operating temperature range (°C) -40 to 125 Enable Active High, Active Low Number of switches 2 Current limit accuracy at 1 A 0.58 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) 1.2 Operating temperature range (°C) -40 to 125 Enable Active High, Active Low Number of switches 2 Current limit accuracy at 1 A 0.58 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 Filters Hot-Plug Events
  • Smooth Turn-on Eliminates In-rush Induced Voltage Drop
  • UL Recognized Component: REF# 205202
  • 1A Nominal Short Circuit Output Current Protects 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
  • 140 mΩ Max. Switch Resistance
  • 1 µA Max. Standby Current
  • 200 µA Max. Operating Current
  • Under-voltage Lockout (UVLO)

All trademarks are the property of their respective owners.

  • Compatible with USB1.1 and USB 2.0
  • 1 ms Fault Flag Delay Filters Hot-Plug Events
  • Smooth Turn-on Eliminates In-rush Induced Voltage Drop
  • UL Recognized Component: REF# 205202
  • 1A Nominal Short Circuit Output Current Protects 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
  • 140 mΩ Max. Switch Resistance
  • 1 µA Max. Standby Current
  • 200 µA Max. Operating Current
  • Under-voltage Lockout (UVLO)

All trademarks are the property of their respective owners.

The LM3526 provides Universal Serial Bus standard power switch and over-current protection for all host port applications. The dual port device is ideal for Notebook and desktop PC's that supply power to more than one port.

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

The dual stage thermal protection circuit in the LM3526 provides individual protection to each switch and the entire device. In a short-circuit/over-current event, the switch dissipating excessive heat is turned off, allowing the second switch to continue to function uninterrupted.

The LM3526 accepts an input voltage between 2.7V and 5.5V allowing use as a device-based in-rush current limiter for 3.3V USB peripherals, as well as Root and Self-Powered Hubs at 5.5V. The Enable inputs accept both 3.3V and 5.0V logic thresholds.

The small size, low RON, and 1 ms fault flag delay make the LM3526 a good choice for root hubs as well as per-port power control in embedded and stand-alone hubs.

The LM3526 provides Universal Serial Bus standard power switch and over-current protection for all host port applications. The dual port device is ideal for Notebook and desktop PC's that supply power to more than one port.

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

The dual stage thermal protection circuit in the LM3526 provides individual protection to each switch and the entire device. In a short-circuit/over-current event, the switch dissipating excessive heat is turned off, allowing the second switch to continue to function uninterrupted.

The LM3526 accepts an input voltage between 2.7V and 5.5V allowing use as a device-based in-rush current limiter for 3.3V USB peripherals, as well as Root and Self-Powered Hubs at 5.5V. The Enable inputs accept both 3.3V and 5.0V logic thresholds.

The small size, low RON, and 1 ms fault flag delay make the LM3526 a good choice for root hubs as well as per-port power control in embedded and stand-alone hubs.
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類型 標題 日期
* Data sheet LM3526 Dual Port USB Power Switch and Over-Current Protection datasheet (Rev. E) 2013年 3月 7日
Certificate US-38419-UL Certificate of Compliance IEC 62368-1 2022年 6月 27日

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