HT7L2103 -- Anti-EMI, High Efficiency Dimmable LED Lighting Driver with Primary-Side Constant Control and Green Mode

General Description

The HT7L2103 is an advanced, highly integrated LED Lighting Driver using an AC-DC isolation topology. The device provides many protection functions and uses ultra low power circuit design, and is optimized to restrict EMI. By integrating a special multi-function interface, this device can be used for different LED power topologies such as Primary Feedback Isolation Flyback, Secondary Feedback Isolation Flyback, DC-DC Buck/Boost/Buck-Boost. This device also integrates various protection functions for LED Lighting requirements such as Cycle-by-Cycle Current Limiting, Short-Circuit Protection (SCP), Over-Voltage Protection (OVP), Internal Over-Temperature Protection (OTP), and a Soft-Start function to reduce inrush currents during LED power system initialization for the prevention of device burn-out.

The HT7L2103 provides a 1~99% PWM Dimming Range with duty-cycle scale precision lower than 1%.

Features

  • Frequency Jitter for EMI Restriction
  • Integrated Soft-Start Function
  • Very Low Operating Current and Start-up Current (<20uA) for satisfying Energy-Star 2.0 "No-Load Mode" (Stand-by) Power standard
  • ±5% Trimmed Precision Oscillator
  • Non-Audible-Noise Green Mode Control to maintain efficiency for both Light and Heavy Loads
  • LEB (Leading-Edge Blanking) on CS Pin
  • Internal Slope Compensation
  • Cycle-by-Cycle Current Limiting
  • Short-Circuit-Protection(SCP) for Short-Circuit and Over-Load Condition
  • Over-Voltage-Protection(OVP) on VCC Pin
  • Internal Over-Temperature-Protection(OTP)
  • 1~99% PWM Dimming Range
  • 8-pin SOP package

Technical Document

Other Information