JYS5021B Switching Buck LED Constant Current Driver

IC小宇宙

JYS5021B Switching Buck LED Constant Current Driver [Copy link]

As a subdivided auto component, headlights account for an increasingly high proportion of the cost of the entire vehicle and are a must-change item for every major or minor modification of the car. Headlights have been upgraded from halogen and xenon lamps to LED lamps, which have the characteristics of high brightness, rich color variety, low power consumption, and long life, and are widely used in the automotive field.

The LED constant current driver we introduce today is JYS5021B. By adjusting the external current sampling resistor, it can control the driving current of high-brightness LED lamps, so that the brightness of LED lamps reaches the expected constant brightness. Adding PWM signal at the DIM end can dim the LED lamp. The DIM end also supports linear dimming. JYS5021B integrates VDD voltage regulator and over-temperature protection circuit inside, reducing peripheral components and improving system reliability.

Features

◆Wide input voltage range: 3.1V~100V

◆High efficiency: up to 95%

◆Support PWM dimming and linear dimming

◆Maximum operating frequency: 1MHz

CS voltage: 250mV

◆Chip power supply undervoltage protection: 2.6V

◆Off time adjustable

◆Intelligent over-temperature protection

◆Built-in VDD voltage regulator

Competitor Models:

Yuanxiang: FP7201 FP7175/6

Nanlin: LN2542 LN2544 LN2545

Super Science: HV9910B

Application Areas

◆Bicycle, electric car, motorcycle lights

◆High-intensity flashlight

◆LED spotlight, LED backlight, high-power LED lighting

application solution

Car headlights: S2 dual-beam headlights

Work light, long light: square 48W

Motorcycle lights, electric car lights, boat lighting: high and low beam motorcycle lights