Description

The HT7L2102 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 Non-Audible Noise Green Mode Control Structure, users can implement a single circuit for different LED load levels for various series/parallel configurations but still maintain high efficiency for different load conditions. 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), Over-Temperature Protection (OTP) for external thermistor sensing, and a Soft-Start function to reduce inrush currents during LED power system initialization for the prevention of device burn-out.

The HT7L2102 provides a 1~99 PWM Dimming Range with duty-cycle scale precision lower than 1.

Feature

? Frequency Jitter for EMI Restriction

? Integrated Soft-Start Function

? Very Low Operating Current and Start-up Current (<20mA) for satisfying Energy-Star 2.0 No-Load Mode (Stand-by) Power standard

? ±5 Trimmed Oscillator for Precise Frequency

? 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

? Over-Temperature-Protection(OTP) on TS pin for External Thermistor Sensing

? 1~99 PWM Dimming Range

? 8-pin SOP package

Applications

? Isolation AC-DC LED Lighting

? AC-DC Switching Power Supply/Adapter