Datasheet > TPS51275_13

TPS51275_13

更新时间： 2024-10-01 12:30:27

品牌	Logo	应用领域
德州仪器 - TI		控制器
页数	文件大小	规格书
31页	1691K
描述
Dual Synchronous, Step-Down Controller with 5-V and 3.3-V LDOs

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TPS51275_13 数据手册

TPS51275, TPS51275B, TPS51275C

www.ti.com

SLUSB45B –JUNE 2012–REVISED MARCH 2013

Dual Synchronous, Step-Down Controller with 5-V and 3.3-V LDOs

FEATURES

APPLICATIONS

•

Input Voltage Range: 5 V to 24 V

•

Notebook Computers

Tablet Computers

Output Voltages: 5 V and 3.3 V (Adjustable

Range ±10%)

DESCRIPTION

•

Built-in, 100-mA, 5-V and 3.3-V LDOs

Clock Output for Charge-Pump

±1% Reference Accuracy

The TPS51275, TPS51275B and TPS51275C are

cost-effective, dual-synchronous buck controllers

targeted for notebook system-power supply solutions.

It provides 5-V and 3.3-V LDOs and requires few

external components. The 260-kHz VCLK output can

be used to drive an external charge pump, generating

gate drive voltage for the load switches without

reducing the main converter efficiency. The

TPS51275, TPS51275B and TPS51275C supports

high efficiency, fast transient response and provides a

combined power-good signal. Adaptive on-time, D-

CAP™ control provides convenient and efficient

operation. The device operates with supply input

voltage ranging from 5 V to 24 V and supports output

voltages of 5.0 V and 3.3 V. The TPS51275,

TPS51275B and TPS51275C are available in a 20-

pin, 3 mm x 3 mm, QFN package and is specified

from –40°C to 85°C.

Adaptive On-Time D-CAP™ Mode Control

Architecture with 300-kHz and 355-kHz

Frequency Setting

•

Auto-skip Light Load Operation (TPS51275,

and TPS51275C)

•

OOA Light Load Operation (TPS51275B)

Internal 0.8-ms Voltage Servo Soft-Start

Low-Side R_DS(on)Current Sensing Scheme

Built-In Output Discharge Function

Separate Enable Input for Switchers

Dedicated OC Setting Terminals

Power Good Indicator

OVP, UVP and OCP Protection

Non-Latch UVLO and OTP Protection

20-Pin, 3 mm x 3 mm, QFN (RUK)

NEED SOME SPACE

ORDERING INFORMATION⁽¹⁾

ORDERABLE

DEVICE NUMBER

ENABLE

FUNCTION

OUTPUT

SUPPLY

SKIP MODE

ALWAYS On-LDO

PACKAGE

QUANTITY

TPS51275RUKR

TPS51275RUKT

TPS51275BRUKR

TPS51275BRUKT

TPS51275CRUKR

TPS51275CRUKT

Tape and Reel

Mini reel

3000

250

Auto-skip

OOA

VREG3

Tape and Reel

Mini reel

3000

250

PLASTIC Quad

Flat Pack

EN1 and EN2

VREG3 and VREG5

Tape and Reel

Mini reel

3000

250

Auto-skip

(1) For the most current package and ordering information see the Package Option Addendum at the end of this document, or see the TI

website at www.ti.com.

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.

D-CAP is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...31

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与TPS51275_13相关器件

型号	品牌	获取价格	描述	数据表
TPS51275_17	TI	获取价格	Dual Synchronous, Step-Down Controller with 5-V and 3.3-V LDOs
TPS51275B	TI	获取价格	Dual Synchronous, Step-Down Controller with 5-V and 3.3-V LDOs
TPS51275B-1	TI	获取价格	TPS51275B-1 Dual Synchronous, Step-Down Controller With 5-V and 3.3-V LDOs
TPS51275B-1_15	TI	获取价格	TPS51275B-1 Dual Synchronous, Step-Down Controller With 5-V and 3.3-V LDOs
TPS51275B-1RUKR	TI	获取价格	TPS51275B-1 Dual Synchronous, Step-Down Controller With 5-V and 3.3-V LDOs
TPS51275B-1RUKT	TI	获取价格	TPS51275B-1 Dual Synchronous, Step-Down Controller With 5-V and 3.3-V LDOs
TPS51275BRUKR	TI	获取价格	Dual Synchronous, Step-Down Controller with 5-V and 3.3-V LDOs
TPS51275BRUKT	TI	获取价格	Dual Synchronous, Step-Down Controller with 5-V and 3.3-V LDOs
TPS51275C	TI	获取价格	Dual Synchronous, Step-Down Controller with 5-V and 3.3-V LDOs
TPS51275CRUKR	TI	获取价格	Dual Synchronous, Step-Down Controller with 5-V and 3.3-V LDOs

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