TPS2074 Pwr Controller for Bus/Self Pwrd USB Hub with 3.3V LDO, 8 pwr switches, Act-Low BPMode Indicator | TI.com

TPS2074 (ACTIVE) Pwr Controller for Bus/Self Pwrd USB Hub with 3.3V LDO, 8 pwr switches, Act-Low BPMode Indicator

Pwr Controller for Bus/Self Pwrd USB Hub with 3.3V LDO, 8 pwr switches, Act-Low BPMode Indicator - TPS2074
Datasheet
 

Description

The TPS2074 and TPS2075 provide a complete USB hub power solution by incorporating three major functions: current-limited power switches for four ports, a 3.3-V 100-mA regulator, and a DP0 line control to signal attach/detach of the hub.

These devices are designed to meet bus-powered and self-powered hub requirements. These devices are also designed for hybrid hub implementations and allow for automatic switching from self-powered mode to bus-powered mode if loss of self-power is experienced. This feature can be disabled by applying a logic high to the BP_DIS input

Each port has a current-limited 100-m N-channel MOSFET high-side power switch for 100-mA bus-powered operation. All the N-channel MOSFETs are designed without parasitic diodes, preventing current backflow into the inputs.

For applications where a 5-V regulator is needed, use the TPS2070 or TPS2071 device.

Features

  • Complete USB Hub Power Solution
  • Meets USB Specifications 1.1 and 2.0
  • Independent Thermal and Short-Circuit Protection
  • 3.3-V Regulator for USB Hub Controller
  • Overcurrent Logic Outputs
  • 4.5-V to 5.5-V Operating Range
  • CMOS- and TTL-Compatible Enable Inputs
  • 185 uA Bus-Power Supply Current
  • Available in 24-Pin SSOP Package
  • -40°C to 85°C Ambient Temperature Range

Parametrics

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Part number Order Vin (Min) (V) Vin (Max) (V) Rating
TPS2074 Order now 4.5     5.5     Catalog