Datasheet > TPS2148_14

TPS2148_14

更新时间： 2024-11-09 02:58:43

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
19页	270K
描述
3.3-V LDO AND DUAL SWITCH FOR USB PERIPHERAL POWER MANAGEMENT

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TPS2148_14 数据手册

TPS2149

TPS2159

SLVS401 – AUGUST 2001

3.3-V LDO AND DUAL SWITCH

FOR USB BUS-POWERED HUB POWER MANAGEMENT

FEATURES

DESCRIPTION

Complete Power Management Solution for

USB Bus-Powered Hubs

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.

3.3-V 200 mA Low-Dropout Voltage Regulator

Two 5-V 340-mΩ (Typ) High-Side MOSFETs

Independent Thermal- and Short-Circuit

Protection for LDO and Each Switch

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 ports

remain unpowered until the hub completes

enumeration.

Overcurrent Indicator With Transient Filter

2.9-V to 5.5-V Operating Range

CMOS- and TTL-Compatible Enable Inputs

75-µA (Typ) Supply Current

Available in 8-Pin MSOP (PowerPAD )

–40°C to 85°C Ambient Temperature Range

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.

APPLICATIONS

USB Bus-Powered Hubs

– Keyboards

– Monitors

The TPS2149 has active-low enables while the

TPS2159 has active-high enables.

– Hub Boxes

LDO and dual switch family selection guide and schematics

TPS2149/59

MSOP–8

TPS2148/58

MSOP–8

TPS2145/55

TSSOP–14

TPS2147/57

MSOP–10

LDO_OUT

LDO_ADJ

IN/SW1

VIN/SW1

LDO_OUT

VIN

LDO

VIN/SW1

LDO_EN

LDO_OUT

OUT2

LDO

LDO_OUT

LDO

LDO_EN

EN2

OC1

OUT1

EN1

OUT1

EN1

OUT2

OC2

OUT2

OC2

SW2

EN2

GND

SW2

EN2

GND

EN1

GND

EN2

GND

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.

www.ti.com

12 3 4 5 6 7...19

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与TPS2148_14相关器件

型号	品牌	获取价格	描述	数据表
TPS2148IDGN	TI	获取价格	3.3-V LDO AND DUAL SWITCH FOR USB PERIPHERAL POWER MANAGEMENT
TPS2148IDGNG4	TI	获取价格	3.3V LDO + Dual Switch For USB Peripherals, Active-Low Enables 8-MSOP-PowerPAD -40 to 85
TPS2148IDGNR	TI	获取价格	Analog IC
TPS2148IDGNRG4	TI	获取价格	IC,POWER SUPPLY SWITCHING CIRCUIT,TSSOP,8PIN,PLASTIC
TPS2149	TI	获取价格	3.3-V LDO AND DUAL SWITCH FOR USB BUS-POWERED HUB POWER MANAGEMENT
TPS2149IDGN	TI	获取价格	3.3-V LDO AND DUAL SWITCH FOR USB BUS-POWERED HUB POWER MANAGEMENT
TPS2149IDGNG4	TI	获取价格	3.3-V LDO AND DUAL SWITCH FOR USB BUS-POWERED HUB POWER MANAGEMENT
TPS2149IDGNR	TI	获取价格	Analog IC
TPS2149IDGNRG4	TI	获取价格	3.3-V LDO AND DUAL SWITCH FOR USB BUS-POWERED HUB POWER MANAGEMENT
TPS2150	TI	获取价格	ADJUSTABLE LDO AND SWITCH WITH DUAL CURRENT LIMIT FOR USB HIGH-POWER PERIPHERAL POWER MANA

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