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LED driver IC Non-isolate driver IC for LED-RM9291S

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LED driver IC Non-isolate driver IC for LED-RM9291S

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Non-isolated Buck APFC LED Driver


General Description

The RM9291S is a high precision non-isolated buckdriver with active PFC, specially designed for85VAC~265VAC input non-isolated constant current LEDlighting. The driver with on-chip PFC circuit achieveshigh power factor and low THD.RM9291S can regulatethe output current by switch on and off with built_inthree_stage dimming circuit. Operating in criticalconduction mode, the power MOSFET switching loss isreduced and the inductor is fully utilized.

The RM9291S integrates a 600V power MOSFET. Withfew external components, the LED output current canbe precisely controlled.

The RM9291S utilizes patent pending floating groundstructure. The inductor current is sensed during thewhole switching cycle. So it achieves high precisionoutput current control, and excellent line regulation andload regulation.

The RM9291S offers rich protection functions toimprove the system reliability, including LED opencircuit protection, LED short circuit protection, VCCunder voltage protection, CS resistor open circuitprotection and cycle by cycle current limit. All theprotection functions are auto-recovery. The systemreliability is further improved by the thermal regulationfunction. The output current is reduced when the driveris over temperature.


Active PFC for High Power Factor and Low THD

Three_stage dimming regulation

Internal 600V Power MOSFET

System Efficiency up to 95%

3% LED Output Current Accuracy

Excellent Line and Load Regulation

Critical Conduction Mode Operation

Ultra Low (40uA) Start Up Current

Ultra Low (320uA) Operating Current

LED Short/Open Protection

Current Sensing Resistor Open Protection

Cycle by Cycle Current Limit

VCC Under Voltage Protection

Auto Fault Recovery

Thermal Regulation Function

Available in SOP-8 Package


LED Bulb, Spot Light

T8/T5LED String

Other LED Lighting

四、Package/Order Information

五、Typical Application

FREE HOT LINE:+86-400-788-7770

Tel:+86-769-81150556Mob:+86-18929103949 Ms Tang

Tel: +86-769-85638990Mob:+86-13725767930 Ms Zhao

Email: dgzm699@163.com QQ:2057045156Fax:+86-769-83351643

Head office: No.8, Yanhe East Street, Ailingkan Village, Dalingshan Town, Dongguan City, Guangdong Province, China

Foshan office: No.169 Rongqi Road,Ronggui Village,Shunde District,Foshan City,Guangdong Province,China

Shenzhen office:Baifuhui Industrial Park,Jianshedonglu Road,Longhua District,Shenzhen City,Guangdong Province,China

Zhongshan office:Shijihaoting,Longchang Road,Dongsheng Village,Zhongshan City,Guangdong Province,China

Hangzhou office:Jiangnanmoka,Wenyan Village,Xiaoshan District,Hangzhou City,Zhejiang Province,China

Office Website: www.topctc.com

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