TPS2155

Features:

 Two 340-m (Typical) High-Side MOSFETs
 200 mA Low-Dropout Voltage Regulator In Fixed 3.3-V or Adjustable Versions
 Independent Thermal- and Short-Circuit Protection for LDO and Each Switch
 Overcurrent Indicators With Transient Filter
 2.9-V to 5.5-V Operating Range
 CMOS- and TTL-Compatible Enable Inputs
 75-A (Typical) Supply Current
 Available in 10-Pin MSOP or 14-Pin TSSOP (PowerPAD)
 −40°C to 85°C Ambient Temperature Range


Application

 USB Hubs and Peripherals
− Keyboards
− Zip Drives
− Speakers and Headsets
 PDAs and Portable Electronics
 DSP Power Sequencing


Pinout




Specifications

Input voltage range: V_I(VIN/SWIN1), V_I(SWIN2),V_I(ENx) , V _{I(LDO_EN)}.. . . . 0.3 V to 6 V
Output voltage range: V_o(OUTx) , V_{O(LDO_OUT)}, V_O(OCx) .. . . . . . . . . . . 0.3 V to 6 V
Maximum output current, I _O(OCx) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±10 mA
Continuous output current, I_O(OUT) , I_{O(LDO_OUT)} . . . . . . . . . . . . . . Internally limited
Continuous total power dissipation . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating virtual-junction temperature range, T_J .. . . . . . . . . . . . . 40°C to 110°C
Storage temperature range, T_stg .  . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C
Lead temperature soldering 1,6 mm (1/16 inch) from case for 10 seconds .. . 260°C
Electrostatic discharge (ESD) protection: Human body model . . . . . . . . . . . . . . . 2 kV
                                                                Charged device model (CDM) . . . . . .. . 1 kV
† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. 


Description

Two TPS2145 and TPS2147  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 TPS2145 and TPS2147 devices also allow core and I/O voltage sequencing in DSP applications, or power segmentation in portable equipment. Each TPS2145 and TPS2147  currentlimited 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.