Datasheet > BuckConv> RT7274

RT7274

更新时间： 2024-01-31 03:10:44

品牌	Logo	应用领域
立锜 - RICHTEK		转换器 TI的电源Demo板
页数	文件大小	规格书
22页	346K
描述
2A, 18V, 700kHz ACOTTM Synchronous Step-Down Converter

阅读下载

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

RT7274 技术参数

Status：	Active	Vin (min) (V)：	4.5
Vin (max) (V)：	18	Number of Outputs：	1
Vout (min) (V)：	0.765	Vout (max) (V)：	8
Preset Vout (V)：		Output Adj. Method：	Resistor
Iout (max) (A)：	2	Current Limit (typ) (A)：	3.5
Freq (typ) (kHz)：	700	Freq (min) (kHz)：
Freq (max) (kHz)：		Ext Sync：	No
Ron_HS (typ) (mOhm)：	150	Ron_LS (typ) (mOhm)：	105
Iq (typ) (mA)：	0.7	Features：	ACOT Control;Adjustable Soft-Start;Enable Input;Fast Transient Response;OCP;PSM;Power Good;Stable with Ceramic Capacitor;UVP
Package Type：	PSOP-8	Datasheet：	https://datasheet5.oss-cn-shanghai.aliyuncs.com/datasheets/richtek/DS7274_79_80_81-04.pdf

RT7274 数据手册

RT7274/79/80/81

2A, 18V, 700kHz ACOT^TMSynchronous Step-Down Converter

General Description

Features

^zACOT^TMMode Enables Fast Transient Response

^z4.5V to 18V Input Voltage Range

^z2A Output Current

The RT7274/79/80/81 is a synchronous step-down DC/

DC converter withAdvanced Constant On-Time (ACOT^TM)

mode control. It achieves high power density to deliver up

to 2Aoutput current from a 4.5V to 18V input supply. The

proprietary ACOT^TMmode offers an optimal transient

response over a wide range of loads and all kinds of ceramic

capacitors, which allows the device to adopt very low ESR

output capacitor for ensuring performance stabilization. In

addition, RT7274/79/80/81 keeps an excellent constant

switching frequency under line and load variation and the

integrated synchronous power switches with theACOT^TM

mode operation provides high efficiency in whole output

current load range. Cycle-by-cycle current limit provides

an accurate protection by a valley detection of low side

MOSFET and external soft-start setting eliminates input

current surge during startup. Protection functions indude

thermal shutdown for RT7274/79/80/81; output under

voltage protection and output over voltage protection for

RT7279/80 only.

^zHigh Efficient Internal N-MOSFET Optimized for

Lower Duty Cycle Applications

^z105mΩ Internal Low Side N-MOSFET

^zAdvanced Constant On-Time Control

^zAllows Ceramic Output Capacitor

^z700kHz Switching Frequency

^zAdjustable Output Voltage from 0.765V to 8V

^zAdjustable and Pre-biased Soft-Start

^zCycle-by-Cycle Current Limit

z Input Under Voltage Lockout

z Thermal Shutdown

z RoHS Compliant and Halogen Free

Applications

z Industrial and Commercial Low Power Systems

z Computer Peripherals

z LCDMonitors and TVs

z Green Electronics/Appliances

z Point of Load Regulation for High-Performance DSPs,

FPGAs, and ASICs

Simplified Application Circuit

RT7274/79/80/81

VIN

OUT

VINR*

BOOT

Input Signal

Power Good

GND

PGOOD*

PVCC

VOUT*

PGND*

* : VINR pin for TSSOP-14 (Exposed Pad) only.

VOUT pin for TSSOP-14 (Exposed Pad) only.

PGND pin for TSSOP-14 (Exposed Pad) only.

PGOOD pin for TSSOP-14 (Exposed Pad) only.

is a registered trademark of Richtek Technology Corporation.

DS7274/79/80/81-01 February 2013

www.richtek.com

12 3 4 5 6 7...22

下载PDF

与RT7274相关器件

型号	品牌	描述	获取价格	数据表
RT7275	RICHTEK	3A, 18V, 700kHz ACOTTM Synchronous Step-Down Converter	获取价格
RT7276	RICHTEK	3A, 18V, 700kHz ACOTTM Synchronous Step-Down Converter	获取价格
RT7277	RICHTEK	3A, 18V, 700kHz ACOTTM Synchronous Step-Down Converter	获取价格
RT7278	RICHTEK	3A, 18V, 700kHz ACOTTM Synchronous Step-Down Converter	获取价格
RT7279	RICHTEK	2A, 18V, 700kHz ACOTTM Synchronous Step-Down Converter	获取价格
RT7280	RICHTEK	2A, 18V, 700kHz ACOTTM Synchronous Step-Down Converter	获取价格

与RT7274相关文章

资料手册解读：UC3842参数和管脚说明
2024-05-22

3
一文带你了解无源晶振的负载电容为何要加两颗谐振电容CL1和CL2
2024-05-22

4
玻璃管保险丝与陶瓷管保险丝：区别与替代性探讨
2024-05-22

3
PCF8574资料解读：主要参数分析、引脚说明
2024-05-21

16

产品中心

服务支持

精选活动

关于我们

帮助中心

RT7274

RT7274 技术参数

RT7274 数据手册

与RT7274相关器件

与RT7274相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

RT7274

RT7274 技术参数

RT7274 数据手册

与RT7274相关器件

与RT7274相关文章

您还可以找

您在本页遇到什么问题？