NXP SSL5301T

Description

The SSL5301T is a mains dimmable controller IC, intended to drive dimmable LEDs in general lighting applications.The main benefits of this IC include:• High dimmer compatibility• Selectable modes for high power factor or low ripple, allowing a wide LED powerrange• Large dimming range• Single stage topology for small PCB footprint• Ease of design-in• Integrated start-up JFET• Low electronic Bill Of Material (BOM)• Supports multi-lamp applications• Various converter topologies supportedThe IC drives an external switch for easy power scaling. It has been designed to start updirectly from the High-Voltage (HV) supply by an internal high-voltage current source.Flyback, buck and buck-boost circuit topologies are supported. Primary side sensing provides accurate output current control.The IC can detect all known mains dimmer types and translate the dimmer setting to a continuous LED current in multiple ways. It can operate in three switching modes at two switching frequency ranges. It offers tradeoffs between the output current ripple, the mains current Total Harmonic Distortion (THD) and the application size. The IC incorporates all required protection features.

Features

 LED controller IC for driving strings of LEDs or high-voltage LEDs from rectified mains

• High-efficiency switch mode buck, flyback or buck-boost controller driving an external
• power FET
•  Two maximum switching frequencies for highest efficiency or smallest application
• size
•  Zero current switching at switch turn-on
•  Zero voltage or valley switching at switch turn-on
•  Selectable low THD or low LED current ripple modes Leading, trailing and intelligent dimmer detection
•  Two built-in dim curves
•  LED current accuracy within 4 % across variations in components and conditions
•  No binning on LED forward voltage required
•  Built-in Protections:
•  UnderVoltage LockOut (UVLO)
•  Leading Edge Blanking (LEB)
•  OverCurrent Protection (OCP)
•  Internal OverTemperature Protection (OTP)
•  Brownout protection
•  Output Short Protection (OSP)
•  Output open OverVoltage Protection (OVP)
•  Mains synchronization loss protection
•  Bleeder dissipation protection
•  Low component count LED driver solution
•  Compatible with wall switches with built-in indication light during standby
•  Operates well in multiple-lamp arrangements
•  IC lifetime matches or surpasses LED lamp lifetime

Typical applications

• Mains dimmable Retrofit LED lamps
• Mains dimmable driver modules for LED lighting

More information

• Datasheet
• IC product information