ADM00962

        MIC3202 HB LED Driver Evaluation Board Part Number: ADM00962  Summary The MIC3202 is a hysteretic, step-down, constant-current, LED driver for high brightness LED. It can be used for interior/exterior lighting, architectural and ambient lighting, LED bulbs, and other general illumination applications. The MIC3202 is well suited for lighting applications requiring a wide-input voltage range. The hysteretic control gives good supply rejection and fast response during load transients and PWM dimming. The high-side current sensing and on-chip current-sense amplifier delivers LED current with ±5% accuracy. An external high-side current-sense resistor is used to set the output current. The MIC3202 offers a dedicated PWM input (DIM pin) which enables a wide range of pulsed dimming. High-frequency switching operation of up to 1MHz allows the use of smaller external components, minimizing space and cost. The MIC3202 offers a frequency dither feature for low-EMI applications. The MIC3202 operates over a junction temperature from -40°C to +125°C and is available in an 8-pin SOIC package with exposed pad. Product Features - 6V to 37V input voltage range - High efficiency (>90%) - ±5% LED current accuracy - MIC3202: Dither enabled for low EMI - High-side current sense (up to 1A) - Dedicated dimming control input - Hysteretic control (no compensation required) - Up to 1MHz switching frequency - Adjustable constant LED current with external current-sense resistor - Over-temperature protection - -40°C to +125°C junction temperature range                                      http://www.microchip.com/developmenttools/ProductDetails/ADM00962#additional‐summary 10‐1‐18