Datasheet > BuckConv> RT7247A

RT7247A

更新时间： 2024-01-29 07:37:31

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
15页	283K
描述
2A, 18V, 340kHz Synchronous Step-Down Converter

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技术参数
数据手册

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RT7247A 技术参数

Status：	Active	Vin (min) (V)：	4.5
Vin (max) (V)：	18	Number of Outputs：	1
Vout (min) (V)：	0.8	Vout (max) (V)：	12
Preset Vout (V)：		Output Adj. Method：	Resistor
Iout (max) (A)：	2	Current Limit (typ) (A)：	5.1
Freq (typ) (kHz)：	800	Freq (min) (kHz)：
Freq (max) (kHz)：		Ext Sync：	No
Ron_HS (typ) (mOhm)：	150	Ron_LS (typ) (mOhm)：	130
Iq (typ) (mA)：	0.8	Features：	Adjustable Soft-Start;Current Mode Control;Enable Input;Force PWM;OCP;Stable with Ceramic Capacitor;UVP
Package Type：	PSOP-8	Datasheet：	https://datasheet5.oss-cn-shanghai.aliyuncs.com/datasheets/richtek/DS7247C-05.pdf

RT7247A 数据手册

RT7247A

2A, 18V, 340kHz Synchronous Step-Down Converter

General Description

Features

1.5% High Accuracy Reference Voltage

The RT7247Ais a high efficiency, monolithic synchronous

step-down DC/DC converter that can deliver up to 2A

output current from a 4.5V to 18V input supply. The

RT7247A's current mode architecture and external

compensation allow the transient response to be

optimized over a wide input range and loads. Cycle-by-

cycle current limit provides protection against shorted

outputs, and soft-start eliminates input current surge during

start-up. The RT7247A also provides under voltage

protection and thermal shutdown protection. The low

current (<3μA) shutdown mode provides output

disconnection, enabling easy power management in

battery-powered systems. The RT7247A is available in

an SOP-8 (Exposed Pad) package.

^z4.5V to 18V Input Voltage Range

^z2A Output Current

^zIntegrated N-MOSFET Switches

^zCurrent Mode Control

^zFixed Frequency Operation : 340kHz

^zOutput Adjustable from 0.8V to 15V

^zStable with Low ESR Ceramic Output Capacitors

^zUp to 95% Efficiency

^zProgrammable Soft-Start

^zCycle-by-Cycle Over Current Protection

^zInput Under Voltage Lockout

z Output Under Voltage Protection

z Thermal Shutdown Protection

z RoHS Compliant and Halogen Free

Marking Information

RT7247AxGSP : Product Number

Applications

z Wireless AP/Router

RT7247Ax

x : H or L or N

GSPYMDNN

YMDNN : Date Code

z Set-Top-Box

z Industrial and Commercial Low Power Systems

z LCDMonitors and TVs

z Green Electronics/Appliances

z Point of Load Regulation of High-PerformanceDSPs

Simplified Application Circuit

BOOT

RT7247A

VIN

BOOT

OUT

Chip Enable

OUT

COMP

GND

is a registered trademark of Richtek Technology Corporation.

DS7247A-01 September 2012

www.richtek.com

12 3 4 5 6 7...15

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与RT7247A相关器件

型号	品牌	描述	获取价格	数据表
RT7247B	RICHTEK	2A, 18V, 1.2MHz Synchronous Step-Down Converter	获取价格
RT7247C	RICHTEK	2A, 18V, 800kHz Synchronous Step-Down Converter	获取价格
RT7248	RICHTEK	2A, 18V, 340kHz Synchronous Step-Down Converter	获取价格
RT7248H	RICHTEK	暂无描述	获取价格
RT7248N	RICHTEK	暂无描述	获取价格
RT7249	RICHTEK	Synchronous Step-Down Converter	获取价格