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TPS2149

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TPS25221 正在供货 高电平有效且具有反向阻断功能的 0.275-2.7A 可调节ILIMIT、2.5-5.5V、70mΩ USB 电源开关 This product is a single channel adjustable current limit switch that can cover the same current limit requirement.

TPS2149

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Product type Optimized for USB-A Vin (max) (V) 5.5 Vin (min) (V) 2.9 Rating Catalog Features Integrated LDO Number of channels 2 Operating temperature range (°C) -40 to 100 Current limit accuracy at 1 A 0.33
Product type Optimized for USB-A Vin (max) (V) 5.5 Vin (min) (V) 2.9 Rating Catalog Features Integrated LDO Number of channels 2 Operating temperature range (°C) -40 to 100 Current limit accuracy at 1 A 0.33
HVSSOP (DGN) 8 14.7 mm² (3 mm × 4.9 mm)
  • Complete Power Management Solution for USB Bus-Powered Hubs
  • 3.3-V 200 mA Low-Dropout Voltage Regulator
  • Two 5-V 340-m (Typ) High-Side MOSFETs
  • Independent Thermal- and Short-Circuit Protection for LDO and Each Switch
  • Overcurrent Indicator With Transient Filter
  • 2.9-V to 5.5-V Operating Range
  • CMOS- and TTL-Compatible Enable Inputs
  • 75-uA (Typ) Supply Current
  • Available in 8-Pin MSOP (PowerPAD™)
  • -40°C to 85°C Ambient Temperature Range
  • APPLICATIONS
    • USB Bus-Powered Hubs
      • Keyboards
      • Monitors
      • Hub Boxes

PowerPAD is a trademark of Texas Instruments.
  • Complete Power Management Solution for USB Bus-Powered Hubs
  • 3.3-V 200 mA Low-Dropout Voltage Regulator
  • Two 5-V 340-m (Typ) High-Side MOSFETs
  • Independent Thermal- and Short-Circuit Protection for LDO and Each Switch
  • Overcurrent Indicator With Transient Filter
  • 2.9-V to 5.5-V Operating Range
  • CMOS- and TTL-Compatible Enable Inputs
  • 75-uA (Typ) Supply Current
  • Available in 8-Pin MSOP (PowerPAD™)
  • -40°C to 85°C Ambient Temperature Range
  • APPLICATIONS
    • USB Bus-Powered Hubs
      • Keyboards
      • Monitors
      • Hub Boxes

PowerPAD is a trademark of Texas Instruments.

The TPS2149 incorporates two power distribution switches and an LDO in one small package, providing a USB bus-powered hub power management solution that saves up to 60% in board space over typical implementations.

The TPS2149 meets USB 2.0 bus-powered hub requirements. An integrated LDO regulates the 5-V bus power down to 3.3 V for the USB controller. The two MOSFET switches provide power to the downstream ports. With independent enables, the downstream ports remain unpowered until the hub completes enumeration.

Each power-distribution switch is capable of supplying 200 mA of continuous current, and the independent logic enables are compatible with 5-V logic and 3-V logic. The switches and the LDO are designed with controlled rise times and fall times to minimize current surges.

The TPS2149 has active-low enables while the TPS2159 has active-high enables.

The TPS2149 incorporates two power distribution switches and an LDO in one small package, providing a USB bus-powered hub power management solution that saves up to 60% in board space over typical implementations.

The TPS2149 meets USB 2.0 bus-powered hub requirements. An integrated LDO regulates the 5-V bus power down to 3.3 V for the USB controller. The two MOSFET switches provide power to the downstream ports. With independent enables, the downstream ports remain unpowered until the hub completes enumeration.

Each power-distribution switch is capable of supplying 200 mA of continuous current, and the independent logic enables are compatible with 5-V logic and 3-V logic. The switches and the LDO are designed with controlled rise times and fall times to minimize current surges.

The TPS2149 has active-low enables while the TPS2159 has active-high enables.
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* 数据表 3.3-V LDO and Dual Switch For USB Bus-Powered Hub Power Management 数据表 2001-8-8

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