Datasheet > RT7270N

RT7270N

更新时间： 2024-02-23 20:49:22

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
14页	244K
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RT7270N 技术参数

Status：	Active	Vin (min) (V)：	4.5
Vin (max) (V)：	18	Number of Outputs：	1
Vout (min) (V)：	0.925	Vout (max) (V)：	15
Preset Vout (V)：		Output Adj. Method：	Resistor
Iout (max) (A)：	3	Current Limit (typ) (A)：	5.1
Freq (typ) (kHz)：	340	Freq (min) (kHz)：
Freq (max) (kHz)：		Ext Sync：	No
Ron_HS (typ) (mOhm)：	110	Ron_LS (typ) (mOhm)：	90
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/DS7270-03.pdf

RT7270N 数据手册

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RT7270

3A, 18V, 340kHz Synchronous Step-Down Converter

General Description

Features



1.5% High Accuracy Reference Voltage

The RT7270 is a high efficiency, monolithic synchronous

step-down DC/DC converter that can deliver up to 3A

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

RT7270's current mode architecture and external

compensation allow the transient response to be

optimized over a wide input voltage range and loads.

Cycle-by-cycle current limit provides protection against

shorted outputs, and soft-start eliminates input current

surge during start-up. The RT7270 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 RT7270 is available in an

SOP-8 (Exposed Pad) package.

^4.5V to 18V Input Voltage Range

^3A Output Current

^Integrated N-MOSFET Switches

^Current Mode Control

^Fixed Frequency Operation : 340kHz

^Output Adjustable from 0.925V to 15V

^Up to 95% Efficiency

^Programmable Soft-Start

^Stable with Low ESR Ceramic Output Capacitors

^Cycle-by-Cycle Over Current Protection

^Input Under Voltage Lockout

 Output Under Voltage Protection

 Thermal Shutdown Protection

 RoHS Compliant and Halogen Free

Ordering Information

RT7270

Applications

 Wireless AP/Router

Package Type

SP : SOP-8 (Exposed Pad-Option 2)

 Set-Top-Box

Lead Plating System

Z : ECO (Ecological Element with

Halogen Free and Pb free)

 Industrial and Commercial Low Power Systems

 LCDMonitors and TVs

 Green Electronics/Appliances

 Point of Load Regulation of High-PerformanceDSPs

H : UVP Hiccup

N : UVP Disabled

Note :

Pin Configurations

Richtek products are :

(TOP VIEW)

 RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

 Suitable for use in SnPb or Pb-free soldering processes.

BOOT

VIN

GND

COMP

GND

Marking Information

SOP-8 (Exposed Pad)

RT7270xZSP : Product Number

RT7270x

x : H or N

ZSPYMDNN

YMDNN : Date Code

is a registered trademark of Richtek Technology Corporation.

DS7270-03 March 2018

www.richtek.com

12 3 4 5 6 7...14

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