TPS2149
FEATURES
D plete Power Management Solution for
USB Bus-Powered Hubs
D 3.3-V 200 m A Low-Dropout Voltage Regulator D Two 5-V 340-mΩ (Typ) High-Side MOSFETs D Independent Thermal- and Short-Circuit
Protection for LDO and Each Switch
D Overcurrent Indicator With Transient Filter D 2.9-V to 5.5-V Operating Range D CMOS- and TTL-patible Enable Inputs D 75-µA (Typ) Supply Current D Available in 8-Pin MSOP (Power PAD) D
- 40°C to 85°C Ambient Temperature Range
APPLICATIONS
D USB Bus-Powered Hubs
- Keyboards
- Monitors
- Hub Boxes
DESCRIPTION
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...
