TPS2147

2-ch, 0.15A loading, 340mΩ USB power switch, active-low + 3.3V output LDO; ? Two 340-m (Typical) High-Side MOSFETs\n? 200 mA Low-Dropout Voltage Regulator In Fixed 3.3-V or Adjustable Versions\n? Independent Thermal- and Short-Circuit Protection for LDO and Each Switch\n? Overcurrent Indicators With Transient Filter\n? 2.9-V to 5.5-V Operating Range\n? CMOS- and TTL-Compatible Enable Inputs\n? 75-uA (Typical) Supply Current\n? Available in 10-Pin MSOP or 14-Pin TSSOP (PowerPAD?)\n? -40°C to 85°C Ambient Temperature Range\n? APPLICATIONS \n? USB Hubs and Peripherals \n? Keyboards\n? Zip Drives\n? Speakers and Headsets\n \n? PDAs and Portable Electronics\n? DSP Power Sequencing\n \n PowerPAD is a trademark of Texas Instruments.;

Two power-distribution switches and an adjustable (TPS2145) or fixed (TPS2147) LDO are incorporated in one small package, providing a power management solution that saves up to 60% in board space over typical implementations. Designed to meet USB 2.0 bus-powered hub requirements, these devices also allow core and I/O voltage sequencing in DSP applications, or power segmentation in portable equipment. Each current-limited switch is a 340-m N-channel MOSFET capable of supplying 200 mA of continuous current. A logic enable compatible with 5-V logic and 3-V logic controls each MOSFET as well as the LDO in the TPS2145. The internal charge pump provides the gate drive controlling the power-switch rise times and fall times, minimizing current surges during switching. The charge pump requires no external components. The LDO has a drop-out voltage of only 0.35 V and with the independent enable on the TPS2145 LDO, the LDO can be used as an additional switch. The LDO output range for the TPS2145 is 1 V to 3.3 V, while the TPS2147 is fixed at 3.3 V. The TPS2145 and TPS2147 have active-low switch enables and the TPS2155 and TPS2157 have active-high switch enables.\n\n \n\n \n\n

TPS2147

LDO AND DUAL SWITCH WITH CONTROLLED RISE TIMES FOR DSP AND PORTABLE APPLICATIONS

TPS2147IDGQ

3.3-V LDO AND DUAL SWITCH FOR USB BUS-POWERED HUB POWER MANAGEMENT

TPS2147IDGQ

LDO AND DUAL SWITCH WITH CONTROLLED RISE TIMES FOR DSP AND PORTABLE APPLICATIONS

TPS2147IDGQ

LDO AND DUAL SWITCH WITH CONTROLLED RISE TIMES FOR DSP AND PORTABLE APPLICATIONS

TPS2147IDGQ

3.3-V LDO AND DUAL SWITCH FOR USB PERIPHERAL POWER MANAGEMENT

TPS2147IDGQG4

LDO AND DUAL SWITCH WITH CONTROLLED RISE TIMES FOR DSP AND PORTABLE APPLICATIONS

TPS2147IDGQR

LDO AND DUAL SWITCH WITH CONTROLLED RISE TIMES FOR DSP AND PORTABLE APPLICATIONS

TPS2147IDGQR

LDO AND DUAL SWITCH WITH CONTROLLED RISE TIMES FOR DSP AND PORTABLE APPLICATIONS

TPS2147IDGQRG4

LDO AND DUAL SWITCH WITH CONTROLLED RISE TIMES FOR DSP AND PORTABLE APPLICATIONS