Datasheet > BuckConv> RT8284

RT8284

更新时间： 2024-02-03 02:04:23

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
15页	318K
描述

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技术参数
数据手册

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RT8284 技术参数

Status：	Active	Vin (min) (V)：	4.5
Vin (max) (V)：	23	Number of Outputs：	1
Vout (min) (V)：	0.923	Vout (max) (V)：	20
Preset Vout (V)：		Output Adj. Method：	Resistor
Iout (max) (A)：	2	Current Limit (typ) (A)：	4.3
Freq (typ) (kHz)：	340	Freq (min) (kHz)：
Freq (max) (kHz)：		Ext Sync：	No
Ron_HS (typ) (mOhm)：	130	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;SOP-8

RT8284 数据手册

RT8284

2A, 23V, 340kHz Synchronous Step-Down Converter

General Description

Features

ꢀ

1.5% High Accuracy Feedback Voltage

The RT8284 is a high efficiency, monolithic synchronous

step-downDC/DC converter that can deliver up to 2Aoutput

current from a 4.5V to 23V input supply. The RT8284's

current mode architecture and external compensation

allow the transient response to be optimized over a wide

range of loads and output capacitors. Cycle-by-cycle

current limit provides protection against shorted outputs

and soft-start eliminates input current surge during start-

up. The RT8284 also provides under voltage protection

and thermal shutdown protection. The low current (< 3μA)

shutdown mode provides output disconnect, enabling easy

power management in battery powered systems. The

RT8284 is a available in a SOP-8 and SOP-8

(Exposed Pad) package.

^ꢀInput Voltage Range : 4.5V to 23V

^ꢀ2A Output Current

^ꢀIntegrated N-MOSFETs

^ꢀCurrent Mode Control

^ꢀ340kHz Fixed Frequency Operation

^ꢀOutput Adjustable Voltage Range : 0.923V to 20V

^ꢀEfficiency Up to 95%

^ꢀ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

RT8284

Applications

ꢀ Wireless AP/Router

Package Type

ꢀ Set-Top-Box

S : SOP-8

SP: SOP-8(Exposed Pad-Option 1)

ꢀ Industrial and Commercial Low Power Systems

ꢀ LCDMonitors and TVs

Lead Plating System

G : Green (Halogen Free and Pb Free)

Note :

ꢀ Green Electronics/Appliances

ꢀ Point of Load Regulation of High-PerformanceDSPs

Richtek products are :

` RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

Pin Configurations

(TOP VIEW)

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

Marking Information

RT8284GS

BOOT

VIN

COMP

RT8284GS : Product Number

RT8284

GND

YMDNN : Date Code

GSYMDNN

SOP-8

RT8284GSP

RT8284GSP : Product Number

BOOT

VIN

RT8284

YMDNN : Date Code

GSPYMDNN

GND

COMP

GND

SOP-8 (Exposed Pad)

DS8284-01 March 2011

www.richtek.com

12 3 4 5 6 7...15

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