Datasheet > BuckCont> RT9259PS

RT9259PS

更新时间： 2024-09-24 04:32:55

品牌	Logo	应用领域
立锜 - RICHTEK		控制器
页数	文件大小	规格书
15页	304K
描述
12V Synchronous Buck PWM DC-DC and Linear Power Controller

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RT9259PS 数据手册

RT9259

12V Synchronous Buck PWM DC-DC and

Linear Power Controller

General Description

Features

^zSingle 12V Bias Supply

The RT9259 is a dual-channelDC/DC controller specifically

designed to deliver high quality power where 12V power

source is available. This part consists of a synchronous

buck controller and an LDO controller. The synchronous

buck controller integrates MOSFET drivers that support

12V+12V bootstrapped voltage for high efficiency power

conversion. The bootstrap diode is built-in to simplify the

circuit design and minimize external part count. The LDO

controller drives an external N-MOSFET for lower power

requirement.

^zSupport Dual Channel Power Conversion

`One Synchronous Rectified Buck PWM Controller

`One Linear Controller

^zBoth Controllers Drive Low Cost N-MOSFETs

^zAdjustable Frequency from 150kHz to 1MHz

and Free-Run Frequency at 230kHz

^zSmall External Component Count

^zOutput Voltage Regulation

`PWM Controller : 1% Accuracy

`LDO Controller : 2% Accuracy

Other features include adjustable operation frequency,

internal soft start, under voltage protection, over current

protection and shut down function. With the above

functions, this part provides customers a compact, high

efficiency, well-protected and cost-effective solution. This

part comes to VQFN-16L 4x4, SOP14 and SSOP-16

packages.

^zTwo Internal V_REFPower Support Lower to 0.8V

z Adjustable External Compensation

z Linear Controller Drives N-MOSFET Pass

Transistor

z Fully-Adjustable Outputs

z Under Voltage Protection for Both Outputs

z Over Current Fault Monitor on MOSFET; No Current

Sense Resistor is Required.

Ordering Information

RT9259

z RoHS Compliant and 100% Lead (Pb)-Free

Package Type

Applications

S : SOP-14

A : SSOP-16

z Graphic CardGPU, Memory Core Power

z Graphic Card Interface Power

z Motherboard,Desktop and Servers Chipset and Memory

Core Power

QV : VQFN-16 4x4 (V-Type)

Operating Temperature Range

P : Pb Free with Commercial Standard

G : Green (Halogen Free with Commer-

cial Standard)

z IA Equipments

Note :

z Telecomm Equipments

Richtek Pb-free and Green products are :

`RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

z High PowerDC-DC Regulators

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

`100% matte tin (Sn) plating.

Marking Information

For marking information, contact our sales representative

directly or through a Richtek distributor located in your

area, otherwise visit our website for detail.

DS9259-03T00 August 2007

www.richtek.com

12 3 4 5 6 7...15

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