The TPS2074 and TPS2075 are four-port USB hub power controllers that provide a complete USB hub power solution. They meet USB Specifications 1.1 and 2.0, and feature independent thermal and short-circuit protection, a 3.3-V regulator for USB hub controller, overcurrent logic outputs, a 4.5-V to 5.5-V operating range, CMOS- and TTL-compatible enable inputs, 185 μA bus-power supply current, and a 24-pin SSOP package. They are suitable for a wide range of temperatures, from –40°C to 85°C.
The TPS2074 and TPS2075 provide a complete USB hub power solution, integrating four current‑limited power switches, a 3.3‑V 100‑mA regulator, and DP0 line control for hub attach/detach signaling. They support both bus‑powered and self‑powered hub configurations and can automatically switch between modes.
Key functions include per‑port over‑current protection, active‑low enable inputs compatible with TTL/CMOS, and a BP_DIS pin to disable the automatic bus‑power switching. The devices are offered in a 24‑pin SSOP DB package and operate over a –40 °C to 85 °C ambient temperature range.
| 3.3‑V regulator output current | 100 mA |
|---|---|
| Ambient temperature range | -40 °C to 85 °C |
BP is the bus‑powered supply input that powers the internal 3.3‑V LDO, logic functions, and provides power to the outputs when the device operates in bus‑powered mode.
Connect the BP_DIS pin to a logic high (or GND) to disable the autoswitching function, preventing the device from switching to bus‑powered mode when self‑power is lost.
DP0_RST provides a hub reset/attach signal; it pulls low momentarily to discharge charge on the DP0 line, then goes high‑impedance, signaling a clean attach.