TPS54227

更新时间： 2024-09-16 08:38:59

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
19页	327K
描述
4.5V to 18V Input, 2-A SYNCHRONOUS STEP DOWN SWIFT

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TPS54227 数据手册

TPS54227

www.ti.com

SLVSAU2 –MAY 2011

4.5V to 18V Input, 2-A SYNCHRONOUS STEP DOWN (SWIFT^TM)

CONVERTER

Check for Samples: TPS54227

FEATURES

DESCRIPTION

The TPS54227 is an adaptive on-time D-CAP2™

mode synchronous buck converter. TheTPS54227

enables system designers to complete the suite of

various end equipment’s power bus regulators with a

cost effective, low component count, low standby

current solution. The main control loop for the

TPS54227 uses the D-CAP2™ mode control which

provides a fast transient response with no external

compensation components. The TPS54227 also has

a proprietary circuit that enables the device to adopt

to both low equivalent series resistance (ESR) output

capacitors, such as POSCAP or SP-CAP, and

ultra-low ESR ceramic capacitors. The device

operates from 4.5-V to 18-V VIN input. The output

voltage can be programmed between 0.76 V and 7 V.

The device also features an adjustable soft start time.

The TPS54227 is available in the 8-pin DDA

package, and designed to operate from –40°C to

85°C.

•

D-CAP2™ Mode Enables Fast Transient

Response

•

Low Output Ripple and Allows Ceramic Output

Capacitor

•

Wide V_INInput Voltage Range: 4.5 V to 18 V

Output Voltage Range: 0.76 V to 7.0 V

Highly Efficient Integrated FETs Optimized

for Lower Duty Cycle Applications

– 155 mΩ (High Side) and 108 mΩ (Low Side)

•

High Efficiency, Less Than 10 μA at Shutdown

High Initial Bandgap Reference Accuracy

Adjustable Soft Start

Pre-Biased Soft Start

700-kHz Switching Frequency (f_SW

)

Cycle By Cycle Over Current Limit

APPLICATIONS

•

Wide Range of Applications for Low Voltage

System

–

Digital TV Power Supply

High Definition Blu-ray Disc™ Players

Networking Home Terminal

Digital Set Top Box (STB)

Vout (50 mV/div)

TPS54227DDA

Iout (1 A/div)

100 ms/div

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-CAP2 is a trademark of Texas Instruments.

Blu-ray Disc is a trademark of Blu-ray Disc Association.

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...19

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TPS54227 替代型号

型号	品牌	替代类型	描述	数据表
TPS54327	TI	功能相似	3-A OUTPUT SINGLE SYNCHRONOUS STEP DOWN SWITCHER WITH INTEGRATED FET (SWIFTTM )
TPS54328	TI	功能相似	4.5V to 18V Input, 3-A Synchronous Step-Down SWIFT? Converter with Eco-Mode?

与TPS54227相关器件

型号	品牌	获取价格	描述	数据表
TPS54227DDA	TI	获取价格	4.5V to 18V Input, 2-A SYNCHRONOUS STEP DOWN SWIFT
TPS54227DDAR	TI	获取价格	4.5V to 18V Input, 2-A SYNCHRONOUS STEP DOWN SWIFT
TPS54227DRCR	TI	获取价格	采用 HSOP 和 VSON 封装的 4.5V 至 18V 输入、2A 同步降压转换器 \|
TPS54227DRCT	TI	获取价格	采用 HSOP 和 VSON 封装的 4.5V 至 18V 输入、2A 同步降压转换器 \|
TPS54228	TI	获取价格	4.5V to 18V Input, 2-A Synchronous Step-Down SWIFT
TPS54228D	TI	获取价格	暂无描述
TPS54228DDA	TI	获取价格	4.5V to 18V Input, 2-A Synchronous Step-Down SWIFT
TPS54228DDAR	TI	获取价格	4.5V to 18V Input, 2-A Synchronous Step-Down SWIFT
TPS54228DR	TI	获取价格	4.5V to 18V Input, 2-A Synchronous Step-Down Converter with Eco-mode™ 8-SOIC -40
TPS54228DRCR	TI	获取价格	具有 Eco-Mode™ 的 4.5V 至 18V 输入，2A 同步降压转换器 \| DRC

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