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TPS2148 Dataheets PDF



Part Number TPS2148
Manufacturers Texas Instruments
Logo Texas Instruments
Description 3.3-V LDO AND DUAL SWITCH
Datasheet TPS2148 DatasheetTPS2148 Datasheet (PDF)

TPS2148 TPS2158 SLVS373 − AUGUST 2001 3.3ĆV LDO AND DUAL SWITCH FOR USB PERIPHERAL POWER MANAGEMENT FEATURES D Complete Power Management Solution for USB Bus-Powered Peripherals D 3.3-V 200 mA Low-Dropout Voltage Regulator With Enable D 3.3-V 340-mΩ (Typ) High-Side MOSFET D 5-V 340-mΩ (Typ) High-Side MOSFET D Independent Thermal- and Short-Circuit Protection for LDO and Each Switch D 2.9-V to 5.5-V Operating Range D CMOS- and TTL-Compatible Enable Inputs D 75-µA (Typ) Supply Current D Availab.

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TPS2148 TPS2158 SLVS373 − AUGUST 2001 3.3ĆV LDO AND DUAL SWITCH FOR USB PERIPHERAL POWER MANAGEMENT FEATURES D Complete Power Management Solution for USB Bus-Powered Peripherals D 3.3-V 200 mA Low-Dropout Voltage Regulator With Enable D 3.3-V 340-mΩ (Typ) High-Side MOSFET D 5-V 340-mΩ (Typ) High-Side MOSFET D Independent Thermal- and Short-Circuit Protection for LDO and Each Switch D 2.9-V to 5.5-V Operating Range D CMOS- and TTL-Compatible Enable Inputs D 75-µA (Typ) Supply Current D Available in 8-Pin MSOP (PowerPAD) D −40°C to 85°C Ambient Temperature Range APPLICATIONS D USB Peripherals − Digital Cameras − Zip Drives − Speakers and Headsets DESCRIPTION The TPS2148 incorporates two power distribution switches and an LDO in one small package, providing a USB peripheral power management solution that saves up to 60% in board space over typical implementations. The TPS2148 meets USB 2.0 bus-powered peripheral requirements. An integrated LDO regulates the 5-V bus power down to 3.3 V for the USB controller, and a MOSFET switch that is internally connected to the output of the LDO simplifies meeting the suspend and enumeration current requirements imposed by the USB specification. A second switch is available to support a downstream port, stage power to a second voltage regulator, or disable power to selected circuitry in power-save modes. Each power-distribution switch is capable of supplying 200 mA of continuous current, and the independent logic enables are compatible with 5-V logic and 3-V logic. The switches and the LDO are designed with controlled rise times and fall times to minimize current surges. The TPS2148 has active-low enables while the TPS2158 has active-high enables. LDO and dual switch family selection guide and schematics VIN/SW1 LDO_EN EN1 SW2 EN2 GND TPS2145/55 TSSOP−14 LDO LDO_OUT VIN/SW1 LDO_ADJ OC1 OUT1 OUT2 OC2 EN1 SW2 EN2 GND TPS2147/57 MSOP−10 LDO LDO_OUT VIN/SW1 OC1 OUT1 LDO_EN EN2 OUT2 OC2 EN1 GND TPS2148/58 MSOP−8 LDO LDO_OUT OUT2 OUT1 TPS2149/59 MSOP−8 VIN LDO LDO_OUT EN1 EN2 GND OUT1 OC OUT2 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PowerPAD is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright  2001, Texas Instruments Incorporated www.ti.com 1 TPS2148 TPS2158 SLVS373 − AUGUST 2001 AVAILABLE OPTIONS PACKAGE TA DESCRIPTION AND PIN COUNT Adjustable LDO with LDO enable TSSOP-14 −40°C to 85°C 3.3-V fixed LDO 3.3-V Fixed LDO with LDO enable and LDO output switch MSOP-10 MSOP-8 3.3-V Fixed LDO, shared input with switches MSOP-8 NOTE: All options available taped and reeled. Add an R suffix (e.g. TPS2145IPWPR) PACKAGED DEVICES ACTIVE LOW (SWITCH) ACTIVE HIGH (SWITCH) TPS2145IPWP TPS2155IPWP TPS2147IDGQ TPS2157IDGQ TPS2148IDGN TPS2158IDGN TPS2149IDGN TPS2159IDGN TPS2148, TPS2158 MSOP (DGN) PACKAGE (TOP VIEW) OUT1 VIN/SWIN1 LDO_OUT OUT2 1 2 3 4 8 EN1† 7 EN2† 6 LDO_EN 5 GND † Pins 7 and 8 are active high for TPS2158. absolute maximum ratings over operating free-air temperature (unless otherwise noted)† Input voltage range: VI(VIN/SWIN1), VI(ENx), VI(LDO_EN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to 6 V Output voltage range: VO(OUTx), VO(LDO_OUT), VO(OCx) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to 6 V Continuous output current, IO(OUT), IO(LDO_OUT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internally limited Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating virtual-junction temperature range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40°C to 110°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −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 “r.


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