Starrystone Tech LED Drivers | BeiLuo Distributor

About LED Drivers

Comprehensive LED driver solutions for general lighting, commercial lighting, and display backlighting applications.

As an authorized distributor of Starrystone Tech, BeiLuo provides a comprehensive range of LED Drivers products. These products are widely used in industrial control, automotive electronics, consumer electronics, and communication equipment. We offer a complete product line with multiple series to meet various application requirements. All products are genuine and original, backed by professional technical support and comprehensive after-sales service.

Selection Guide: How to Choose the Right LED Drivers

Product List

2 products available

Part Number ↕	Topology ↕	Input Voltage ↕	LED String Voltage ↕	Max Output Current ↕	Current Accuracy ↕	Package ↕	Stock Status	Action
STR-L3201	Buck (Step-Down)	6V to 40V	Up to 36V	1A	±3%	SOP-8, ESOP-8	In Stock	View Details
STR-H5601	Boost (Step-Up)	9V to 36V	Up to 60V	2A	-	ESOP-10	In Stock	View Details

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Frequently Asked Questions

What LED driver topologies does Starrystone Tech offer?

Starrystone Tech offers LED drivers in multiple topologies to suit different LED configurations. Buck (step-down) drivers are used when input voltage is higher than LED string voltage. Boost (step-up) drivers are used when LED string voltage exceeds input voltage. Buck-boost drivers handle both situations and are ideal for battery-powered applications. The STR-L series covers low to medium power, while STR-H series handles high-power applications.

Select topology based on input voltage and LED string voltage relationship.

What dimming methods are supported?

Starrystone Tech LED drivers support multiple dimming methods. Analog dimming adjusts LED current proportionally to a control voltage (typically 0-10V or 0-1V). PWM dimming switches the LED current on/off at high frequency with variable duty cycle for brightness control. Some drivers support digital interfaces like I2C for precise brightness control. The choice depends on application requirements - analog is simpler, PWM maintains color temperature, digital offers most flexibility.

Choose dimming method based on control system. PWM recommended for maintaining color temperature.

How do I calculate the LED current setting?

LED current is typically set using a current sense resistor. The driver regulates the voltage across this resistor to maintain constant current. Calculate resistor value using: Rsense = Vref / Iled, where Vref is the driver's reference voltage (typically 0.2V-0.25V) and Iled is desired LED current. For example, for 350mA LED current with 0.25V reference: Rsense = 0.25V / 0.35A = 0.714Ω. Use standard resistor values and consider power rating (P = I² × R).

Calculate based on reference voltage and desired current. Check datasheet for specific reference voltage.

What protection features do Starrystone Tech LED drivers include?

Starrystone Tech LED drivers include comprehensive protection features: LED open protection prevents over-voltage if LED string opens

LED short protection limits current if LEDs short

over-current protection prevents excessive driver current

over-temperature protection reduces current or shuts down if overheating

and under-voltage lockout ensures proper startup. These protections ensure reliable operation and long LED lifetime.

Integrated protections ensure reliability. Review datasheet for specific protection thresholds.

Can Starrystone Tech LED drivers support multiple LED strings?

Some Starrystone Tech LED driver models support multiple LED strings with current balancing. This is useful for applications requiring multiple LED channels or redundancy. Current balancing ensures equal current in each string despite variations in LED forward voltage. Check specific product datasheets for multi-string capability. For applications requiring independent control of multiple strings, multiple driver ICs may be needed.

Check datasheet for multi-string support. Use multiple drivers for independent string control.