Datasheet > RT8494GS

RT8494GS

更新时间： 2024-11-13 01:19:07

品牌	Logo	应用领域
立锜 - RICHTEK		/
页数	文件大小	规格书
17页	265K
描述
High Voltage High Current LED Driver Controller

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

RT8494GS 数据手册

RT8494

High Voltage High Current LED Driver Controller for

Buck, Boost or Buck-Boost Topology

General Description

Features

^High Voltage Capability : V_INup to 36V, LED Sensing

Threshold Common Mode Voltage up to 90V

^Buck, Boost or Buck-Boost Operation

The RT8494 is a current mode PWM controller designed

to drive an external MOSFET for high current LED

applications. With a current sense amplifier threshold of

190mV, the LED current is programmable with one

external current sense resistor. With the maximum

operating input voltage of 36V and output voltage up to

90V, the RT8494 is ideal for Buck, Boost or Buck-Boost

operation.

^Programmable Switching Frequency

^Easy Dimming Control : Analog or Digital

Converting to Analog with One External Capacitor

^Programmable Soft-Start to Avoid Inrush Current

^Programmable Over-Voltage Protection

^V_INUnder-Voltage Lockout and Thermal Shutdown

^AEC-Q100 Compliance

With the switching frequency programmable over 100kHz

to 1MHz, the external inductor and capacitors can be small

while maintaining high efficiency.

Applications

Dimming can be done by either analog or digital. The built-

in clamping comparator and filter allow easy low noise

analog dimming conversion from digital signal with only

one external capacitor.

 General Industrial High Power LED Lighting

 Desk Lights and Room Lighting

 Building and Street Lighting

 Industrial Display Backlight

The RT8494 is available in SOP-14 package.

Pin Configurations

Ordering Information

RT8494

(TOP VIEW)

RSET

ISW

ISP

ISN

GATE

GBIAS

GND

VCC

OVP

Package Type

S : SOP-14

Lead Plating System

G : Green (Halogen Free and Pb Free)

ACTL

DCTL

Note :

Richtek products are :

SOP-14

 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.

Marking Information

RT8494GS : Product Number

RT8494

GSYMDNN

YMDNN : Date Code

is a registered trademark of Richtek Technology Corporation.

DS8494-01 November 2015

www.richtek.com

12 3 4 5 6 7...17

中文翻译

下载PDF

与RT8494GS相关器件

型号	品牌	获取价格	描述	数据表
RT8498	RICHTEK	获取价格	暂无描述
RT-85	ASTRODYNE	获取价格	85W Triple Output Switching Power Supply
RT-85	MEANWELL	获取价格	85W Triple Output Switching Power Supply
RT-85_10	MEANWELL	获取价格	85W Triple Output Switching Power Supply
RT-85_11	MEANWELL	获取价格	85W Triple Output Switching Power Supply
RT8509	RICHTEK	获取价格	暂无描述
RT8509A	RICHTEK	获取价格	暂无描述
RT8510	RICHTEK	获取价格	暂无描述
RT8511A	RICHTEK	获取价格	43V Asynchronous Boost WLED Driver
RT8511B	RICHTEK	获取价格	暂无描述