DUAL SWITCH. TPS2148 Datasheet

TPS2148 Datasheet PDF, Equivalent


Part Number

TPS2148

Description

3.3-V LDO AND DUAL SWITCH

Manufacture

etcTI

Total Page 22 Pages
PDF Download
Download TPS2148 Datasheet PDF


TPS2148 Datasheet
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-m(Typ) High-Side MOSFET
D 5-V 340-m(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 Datasheet
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 “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
All voltages are with respect to GND.
PACKAGE
MSOP8
DISSIPATION RATING TABLE
TA 25°C
POWER RATING
1455.5 mW
DERATING FACTOR
ABOVE TA = 25°C
17.1 mW/°C
TA = 70°C
POWER RATING
684.9 mW
TA = 85°C
POWER RATING
428.08 mW
2 www.ti.com


Features Datasheet pdf TPS2148 TPS2158 SLVS373 − AUGUST 2001 3.3ĆV LDO AND DUAL SWITCH FOR USB PE RIPHERAL POWER MANAGEMENT FEATURES D C omplete Power Management Solution for U SB Bus-Powered Peripherals D 3.3-V 200 mA Low-Dropout Voltage Regulator With E nable D 3.3-V 340-mΩ (Typ) High-Side MOSFET D 5-V 340-mΩ (Typ) High-Side M OSFET D Independent Thermal- and Short- Circuit Protection for LDO and Each Swi tch 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 le in 8-Pin MSOP (PowerPAD) D −40 C to 85°C Ambient Temperature Range A PPLICATIONS D USB Peripherals − Digit al Cameras − Zip Drives − Speakers and Headsets DESCRIPTION The TPS2148 i ncorporates two power distribution swit ches and an LDO in one small package, p roviding a USB peripheral power managem ent solution that saves up to 60% in bo ard 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 .
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