Datasheet > RT2825

RT2825

更新时间： 2024-09-24 15:50:03

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
22页	427K
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RT2825 技术参数

Status：	Active	Vin (min) (V)：	4.5
Vin (max) (V)：	18	Number of Outputs：	2
Vout (min) (V)：	0.6	Vout (max) (V)：	5
Preset Vout (V)：		Output Adj. Method：	Resistor
Iout (max) (A)：	5	Current Limit (typ) (A)：	8.4
Freq (typ) (kHz)：		Freq (min) (kHz)：	200
Freq (max) (kHz)：	1000	Ext Sync：	Yes
Ron_HS (typ) (mOhm)：	31	Ron_LS (typ) (mOhm)：	23
Iq (typ) (mA)：	2.6	Features：	Adjustable Current Limit;Adjustable Frequency;Adjustable Soft-Start;Current Mode Control;Cycle-by-Cycle Current Limit;External Synchronization;OCP;Power Good;Stable with Ceramic Capacitor;UVP
Package Type：	VQFN6x6-36L

RT2825 数据手册

RT2825

4.5V to 18V, 5A/5A Dual Synchronous Step-Down Converter

General Description

Features

^Wide Input Supply Voltage Range : 4.5V to 18V

^Fully Integrated Dual-Buck, Up to 5A/5A

^Adjustable Switching Frequency 200kHz to 1MHz

Set by External Resistor or SYNC Signal

^Dedicated Enable/Soft-Start for Each Buck

^Current Mode Control with Simple Compensation

Circuit

The RT2825 features two synchronous wide input range

high efficiency buck converters that cab deliver up to 5A/

5A output current from a 4.5V to 18V input supply. The

converters are designed to simplify its application while

giving the designer the option to optimize their usage

according to the target application.

The converters can operate in 5V, 9V, 12V or 15V systems

and have integrated power transistors. The RT2825's

current mode architecture allows the transient response

to be improved. Cycle-by-cycle current limit provides

protection against shorted outputs.

^Adjustable Cycle-by-Cycle Current Limit Set by

External Resistor

^Over-Temperature Protection

^Power Good Indicator

^Discontinuous Operating Mode at Light Load when

LOWP = L

Each converter features enable pin that allows a delayed

start-up for sequencing purposes, soft start pin that allows

adjustable soft-start time by choosing the soft-start

capacitor, and a current limit (RLIMx) pin that enables

designer to adjust current limit by selecting an external

resistor and optimize the choice of inductor. The COMP

pin allows optimizing transient versus dc accuracy

response with a simple RC compensation.

 1% V_REFAccuracy

 RoHS Compliant and Halogen Free

Applications

 DTV

 TCON

 BDVD

The switching frequency of the converters can either be

set with an external resistor connected to ROSC pin or

can be synchronized to an external clock if needed. The

switching regulators are designed to operate from

200kHz to 1MHz. The converters operate with 180° phase

between two channels to minimize the input filter

requirements.

 Set Top Boxes

 Tablet

Ordering Information

RT2825

Pin 1 Orientation***

(2) : Quadrant 2, Follow EIA-481-D

The RT2825 also features a low power mode enabled by

an external signal, which allows for a reduction on the

input power supplied to the system when the host

processor is in stand-by (low activity) mode.

Package Type

QV : VQFN-36L 6x6 (V-Type)

Lead Plating System

G : Green (Halogen Free and Pb Free)

The RT2825 is available in a VQFN-36L 6x6 package.

Note :

***Empty means Pin1 orientation is Quadrant 1

Richtek products are :

 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.

is a registered trademark of Richtek Technology Corporation.

DS2825-00 May 2017

www.richtek.com

12 3 4 5 6 7...22

中文翻译

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与RT2825相关器件

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RT28516	TE	获取价格	Accessories Industrial Power Relay RT / RP / SR2M
RT2852B	RICHTEK	获取价格	暂无描述
RT2853A	RICHTEK	获取价格	暂无描述
RT2853B	RICHTEK	获取价格	暂无描述
RT2855A	RICHTEK	获取价格	暂无描述
RT2855AHGQW	RICHTEK	获取价格	IC REG BUCK ADJ 4A SYNC 16WQFN
RT2855ALGQW	RICHTEK	获取价格	IC REG BUCK ADJ 4A SYNC 16WQFN
RT2855B	RICHTEK	获取价格	暂无描述
RT2855BHGQW	RICHTEK	获取价格	IC REG BUCK ADJ 4A SYNC 16WQFN
RT2855BLGQW	RICHTEK	获取价格	IC REG BUCK ADJ 4A SYNC 16WQFN

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