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RT8498 PDF预览

RT8498

更新时间: 2024-11-12 15:50:03
品牌 Logo 应用领域
立锜 - RICHTEK /
页数 文件大小 规格书
12页 235K
描述
暂无描述

RT8498 技术参数

Status:ActiveVin (min) (V):3
Vin (max) (V):18Vout (max) (V):18
LED Channels:1Topology:Boost;Buck;Buck-boost
SW Freq (typ) (kHz):350Vcs (typ) (mV):100
Dimming Control:Analog;PWM;PWM-to-AnalogFeatures:Current Mode Control;Cycle-by-Cycle Current Limit;OVP;UVP
Package Type:SOT-26

RT8498 数据手册

 浏览型号RT8498的Datasheet PDF文件第2页浏览型号RT8498的Datasheet PDF文件第3页浏览型号RT8498的Datasheet PDF文件第4页浏览型号RT8498的Datasheet PDF文件第5页浏览型号RT8498的Datasheet PDF文件第6页浏览型号RT8498的Datasheet PDF文件第7页 
®
RT8498  
18V Multi-Topology LED Driver with Dimming Control  
General Description  
Features  
High Voltage : VIN Up to 18V, VOUT Up to 18V  
The RT8498 is a current-mode LED driver supporting wide  
input voltage range from 3V to 18V and output voltage up  
to 18V. With internal 350kHz operating frequency, the size  
of the external PWM inductor and input/output capacitors  
can be minimized. High efficiency is achieved by a 100mV  
current sensing control. LEDdimming control can be done  
from either analog or PWM signal. The RT8498 provides  
an internal soft-start function to avoid inrush current and  
thermal shutdown to prevent the device from overheat.  
Built-In 2A Power Switch  
Current-Mode PWM Control  
350kHz Fixed Switching Frequency  
Analog, PWM Digital or PWM Converting to Analog  
with One External Capacitor  
Internal Soft-Start to Avoid Inrush Current  
Under-Voltage Lockout  
Internal Over Voltage Protection to Limit Output  
Voltage  
The RT8498 is available in the SOT-23-6 package.  
Cycle-by Cycle Current Limit  
Thermal Shutdown  
Ordering Information  
RT8498  
Applications  
Package Type  
E : SOT-23-6  
GPS, Portable DVD Backlight  
Display Cabinet Lamp and Room Lighting  
IP Camera  
Lead Plating System  
G : Green (Halogen Free and Pb Free)  
Note :  
Richtek products are :  
RoHS compliant and compatible with the current require-  
ments of IPC/JEDEC J-STD-020.  
Pin Configuration  
(TOP VIEW)  
Suitable for use in SnPb or Pb-free soldering processes.  
ISN VCC ACTL  
6
5
2
4
3
Marking Information  
47= : Product Code  
SW GND DCTL  
SOT-23-6  
47=DNN  
DNN : Date Code  
Copyright 2018 Richtek Technology Corporation. All rights reserved.  
©
is a registered trademark of Richtek Technology Corporation.  
DS8498-02 December 2018  
www.richtek.com  
1

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