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PT6988B

CategoryOther integrated circuit (IC)    The LED driver   
File Size1MB,10 Pages
ManufacturerPrinceton Technology Corp.
Websitehttp://www.princeton.com.tw/
Download Datasheet View All
PT6988/B
ON/OFF
三段调光非隔离降压型
LED
恒流驱动器
概述
PT6988/B
是一款
ON/OFF
三段调光 高精度非隔离降压型
LED
恒流驱动芯片。适用于
85VAC~265VAC
全电压输入
范围的非隔离降压型
LED
恒流驱动电源。
PT6988/B
内部具有高精度的电流检测和恒流电路,½实现
高精度的
LED
恒流输出和优异的线电压调整率。额定输出
时,芯片工½在电感电流临界导通模式下,LED 输出电流
不随电感量和
LED
输出电压的变化而变化,负½½调整率良
½。
PT6988/B
集成
500V
功率管,并采用源极驱动方式,具有
工½电流½,无需辅助绕组检测和供电,外围元件极少,
极大的节约了系统成本和½积。
PT6988/B
集成多种保护功½,以保证系统的稳定性和可靠
性。保护功½包括
CS
电阻短路保护,LED 开路/短路保护,
芯片供电欠压保护,芯片温度智½控制等。
特点
内部集成
500V
功率管
ON/OFF
三段调光控制
调光模式下频率变化小
电感电流临界导通模式(额定亮度)
无需辅助绕组检测和供电
芯片超½工½电流
±5%输出电流精度
LED
开路/短路保护
CS
电阻短路保护
供电欠压保护
温度智½控制
自动重启动功½
采用
SOP8
封装
应用
LED
球泡灯,PAR 灯
LED
日光灯
其它
LED
照明
电路框图
Tel: 886-66296288
Fax: 886-29174598
http://www.princeton.com.tw
2F, 233-1, Baociao Road, Sindian Dist., New Taipei City 23145, Taiwan
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