The CL88020T-E/SE LED Driver Integrated Circuit (IC) is an off-line sequential linear LED driver designed to provide 8.5W of LED power from a 120 VAC nominal input voltage. CL88020T-E/SE is designed to drive a long string of inexpensive, low-current LEDs directly from the AC mains. A basic driver circuit consists of Microchip Technology Inc.’s CL88020T-E/SE LED driver IC, six resistors and a bridge rectifier. Two to four additional components are optional for various levels of transient protection, also with a low-cost NTC to assure remote over-temperature protection (OTP). No capacitors, EMI filters, or power factor correction circuits are needed unless the optional reduced light output ripple feature is desired.
Feature
- Optimized for 120 VAC Nominal Input Voltage
- 120 VAC ± 15% input voltage
- Targeted for 8.5W Output Power
- Programmable Overtemperature Protection
- Provides Gradual Reduction in Light Output with Increasing Temperature
- Active Line Regulation
- Provides Fairly Constant Output Power over Variations in AC Line Voltage
- Typical Line Regulation of –12% to +0%
- Four Taps with Two Current Set Resistors
- Allows Optimization of THD
- Optional Reduced Light Output Ripple
- Provides Continuous Power to the LED
- Eliminates Strobing
- Uses an External Ceramic Storage Capacitor
- TRIAC Dimmer Compatible
- Available in a Thermally Enhanced 8-Lead SOIC Package with Heat Slug
- Larger Creepage Distances between HighVoltage and Low Voltage Pins
