Product Introduction

Product parameters

Funtion：Switch-Mode High-Brightness LED Driver IC

Opration Mode：Switch

Vin Range：4V-28V

Operating Current：475uA

Solar Panel charge：No

Chip Temperature Regulation：No

Package：SOT23-6

Dimming：Yes

Chip Enable：Yes

On-chip Power MOSFET：No

General Description：

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.

Applications：

l Architectural, Industrial, and Ambient Lighting

l Automotive RCL, DRL, and Fog Lights

l MR16 and Other LED Bulbs

l Indicators and Emergency Lighting

Features：

l High-Side Current Sense

l Dedicated Dimming Control Input

l 20kHz Maximum Dimming Frequency

l Hysteretic Control: No Compensation

l Up to 1MHz Switching Frequency