| CN5820 |
| Switch-Mode High-Brightness LED Driver IC |
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| General Description： |
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| The CN5820 is a switch-mode step-down constant-current high-brightness LED (HB LED) driver, the device provides |
| a cost effective solution for automotive interior/exterior lighting, architectural and ambient lighting, LED bulbs such |
| as MR16 and other LED illumination applications.The CN5820 operates from a 4V to 28V input voltage range and |
| features a 5V/5mA on-board regulator. A high-side current-sense resistor adjusts the LED current and a dedicated |
| input (DIM) enables PWM dimming and analog dimming. |
| The CN5820 is well suited for applications requiring a wide input voltage range. The high-side current-sensing and |
| an integrated current-setting circuitry minimize the number of external components while delivering an LED current |
| with ±5% accuracy. A hysteretic control algorithm ensures excellent input-supply rejection and fast response during |
| load transients and PWM dimming.The CN5820 features a 20% inductor current ripple.These devices operate up to |
| 1MHz switching frequency, thus allowing for small component size. |
| The CN5820 operates over the -40°C to +85°C temperature range and is available in 6-pin SOT23 package. |
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| Applications： |
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MR16 and Other LED Bulbs |
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Architectural, Industrial, and Ambient Lighting |
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Indicators and Emergency Lighting |
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Automotive RCL, DRL, and Fog Lights |
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| Features： |
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High-Side Current Sense |
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Dedicated Dimming Control Input |
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20kHz Maximum Dimming Frequency |
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Hysteretic Control: No Compensation |
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Up to 1MHz Switching Frequency |
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±5% LED Current Accuracy |
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Adjustable Constant LED Current |
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4V to 28V Input Voltage Range |
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Over 25W Output Power |
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5V, 5mA On-Board Regulator |
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Operating Temperature Range ：－40°C to 85°C |
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Lead Free, rohs-Compliant and Halogen Free |
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Application Note |
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Quick
Start of CN5820 Demo Board |
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