TPS51218

更新时间： 2024-11-23 07:04:47

品牌	Logo	应用领域
德州仪器 - TI		控制器
页数	文件大小	规格书
27页	1973K
描述
HIGH PERFORMANCE, SINGLE SYNCHRONOUS STEP-DOWN CONTROLLER FOR NOTEBOOK POWER SUPPLY

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TPS51218 数据手册

TPS51218

www.ti.com ............................................................................................................................................................... SLUS935A–MAY 2009–REVISED JUNE 2009

HIGH PERFORMANCE, SINGLE SYNCHRONOUS STEP-DOWN

CONTROLLER FOR NOTEBOOK POWER SUPPLY

FEATURES

APPLICATIONS

•

Notebook Computers

I/O Supplies

System Power Supplies

•

Wide Input Voltage Range: 3 V to 28 V

Output Voltage Range: 0.7 V to 2.6 V

Wide Output Load Range: 0 to 20A+

Built-in 0.5% 0.7 V Reference

•

DESCRIPTION

D-CAP™ Mode with 100-ns Load Step

Response

The TPS51218 is a small-sized single buck controller

with adaptive on-time D-CAP™ mode. The device is

suitable for low output voltage, high current, PC

system power rail and similar point-of-load (POL)

power supply in digital consumer products. A small

package with minimal pin-count saves space on the

PCB, while a dedicated EN pin and pre-set frequency

selections minimize design effort required for new

designs. The skip-mode at light load condition, strong

gate drivers and low-side FET R_DS(on)current sensing

supports low-loss and high efficiency, over a broad

load range. The conversion input voltage which is the

high-side FET drain voltage ranges from 3 V to 28 V

and the output voltage ranges from 0.7 V to 2.6 V.

The device requires an external 5-V supply. The

TPS51218 is available in a 10-pin SON package

specified from –40°C to 85°C.

•

Adaptive On Time Control Architecture With 4

Selectable Frequency Setting

•

4700 ppm/°C R_DS(on)Current Sensing

Internal 1-ms Voltage Servo Softstart

Pre-Charged Start-up Capability

Built in Output Discharge

Power Good Output

Integrated Boost Switch

Built-in OVP/UVP/OCP

Thermal Shutdown (Non-latch)

SON-10 (DSC) Package

TYPICAL APPLICATION CIRCUIT

V5IN

TPS51218

PGOOD VBST 10

TRIP

DRVH

OUT

VFB

V5IN

DRVL

GND

_GND

OUT

UDG-09064

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...27

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与TPS51218相关器件

型号	品牌	获取价格	描述	数据表
TPS51218_16	TI	获取价格	HIGH PERFORMANCE, SINGLE SYNCHRONOUS STEP-DOWN CONTROLLER FOR NOTEBOOK POWER SUPPLY
TPS51218DSCR	TI	获取价格	HIGH PERFORMANCE, SINGLE SYNCHRONOUS STEP-DOWN CONTROLLER FOR NOTEBOOK POWER SUPPLY
TPS51218DSCT	TI	获取价格	HIGH PERFORMANCE, SINGLE SYNCHRONOUS STEP-DOWN CONTROLLER FOR NOTEBOOK POWER SUPPLY
TPS51219	TI	获取价格	High Performance, Single-Synchronous Step-Down Controller with Differential Voltage Feedba
TPS51219_14	TI	获取价格	High Performance, Single-Synchronous Step-Down Controller with Differential Voltage Feedba
TPS51219RTER	TI	获取价格	High Performance, Single-Synchronous Step-Down Controller with Differential Voltage Feedba
TPS51219RTET	TI	获取价格	High Performance, Single-Synchronous Step-Down Controller with Differential Voltage Feedba
TPS51220	TI	获取价格	Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller
TPS51220A	TI	获取价格	Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller
TPS51220A-Q1	TI	获取价格	Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller

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