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RT9259C PDF预览

RT9259C

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 303K
描述
12V Synchronous Buck PWM DC-DC and Linear Power Controller

RT9259C 数据手册

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RT9259C  
12V Synchronous Buck PWM DC-DC and Linear Power Controller  
General Description  
Features  
z Single 12V Bias Supply  
The RT9259C is a dual-channel DC/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.  
z Support Dual Channel Power Conversion  
`One Synchronous Rectified Buck PWM Controller  
`One Linear Controller  
z Both Controllers Drive Low Cost N-MOSFETs  
z Adjustable Frequency from 150kHz to 1MHz  
and Free-Run Frequency at 230kHz  
z Small External Component Count  
z
1% High Accuracy Output Voltage Regulation for  
Both PWM and LDO Controller  
z Two Internal VREF Power Support Lower to 0.8V  
z Adjustable External Compensation  
z Linear Controller Drives N-MOSFET Pass  
Transistor  
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.  
z Fully-Adjustable Outputs  
z Under Voltage Protection for Both Outputs  
z Over Current Fault Monitor on MOSFET; No Current  
Sense Resistor is Required.  
z RoHS Compliant and 100% Lead (Pb)-Free  
Ordering Information  
RT9259C  
Applications  
Package Type  
S : SOP-14  
A : SSOP-16  
QV : VQFN-16 4x4 (V-Type)  
z Graphic CardGPU, Memory Core Power  
z Graphic Card Interface Power  
z Motherboard,Desktop and Servers Chipset and Memory  
Core Power  
Operating Temperature Range  
P : Pb Free with Commercial Standard  
G : Green (Halogen Free with Commer-  
cial Standard)  
z IA Equipments  
z Telecomm Equipments  
Note :  
z High PowerDC-DC Regulators  
Richtek Pb-free and Green 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.  
`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.  
DS9259C-03 August 2007  
www.richtek.com  
1

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