STLED25JR

Product Overview

• Category: LED Driver
• Use: This product is used to drive and control LEDs (Light Emitting Diodes).
• Characteristics: The STLED25JR is a compact and efficient LED driver that offers high performance and reliability. It is designed to provide precise current regulation for driving LEDs in various applications.
• Package: The STLED25JR comes in a small surface-mount package, making it suitable for space-constrained designs.
• Essence: The essence of the STLED25JR lies in its ability to deliver accurate and stable current to LEDs, ensuring optimal brightness and longevity.
• Packaging/Quantity: The STLED25JR is typically packaged in reels or tubes, with a quantity of 2500 units per reel.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Current Range: 10mA to 100mA
• Operating Temperature Range: -40°C to +85°C
• Dimming Control: PWM (Pulse Width Modulation)
• Efficiency: Up to 90%
• Protection Features: Over-temperature, over-voltage, and short-circuit protection

Detailed Pin Configuration

The STLED25JR has the following pin configuration:

1. VDD: Power supply input
2. GND: Ground connection
3. DIM: Dimming control input
4. OUT: LED output

Functional Features

• Precise Current Regulation: The STLED25JR ensures accurate and stable current regulation, preventing variations in LED brightness.
• PWM Dimming Control: The dimming control input allows for easy adjustment of LED brightness using pulse width modulation.
• Efficient Power Conversion: With up to 90% efficiency, the STLED25JR minimizes power losses and maximizes energy savings.
• Protection Mechanisms: The driver incorporates over-temperature, over-voltage, and short-circuit protection to safeguard the LEDs and the driver itself.

Advantages and Disadvantages

Advantages: - Compact Size: The small package size makes it suitable for space-constrained designs. - High Efficiency: The driver's high efficiency helps reduce power consumption. - Protection Features: The built-in protection mechanisms ensure the longevity of both the LEDs and the driver.

Disadvantages: - Limited Output Current Range: The STLED25JR is designed for low to medium current applications and may not be suitable for high-power LED requirements. - Narrow Input Voltage Range: The input voltage range limits its compatibility with certain power supply configurations.

Working Principles

The STLED25JR operates by converting the input voltage into a regulated current that drives the connected LEDs. It uses a feedback mechanism to maintain a constant current output, compensating for any variations in the LED forward voltage. The dimming control input allows for adjusting the LED brightness by modulating the duty cycle of the PWM signal.

Detailed Application Field Plans

The STLED25JR finds applications in various fields, including:

1. Automotive Lighting: Used in interior and exterior lighting systems of automobiles.
2. Display Backlighting: Provides efficient and precise current regulation for LED backlights in LCD displays.
3. General Lighting: Suitable for residential and commercial lighting applications.
4. Portable Devices: Enables LED illumination in portable electronic devices such as smartphones and tablets.

Detailed and Complete Alternative Models

1. STLED10JR: Similar to the STLED25JR but with a lower output current range (10mA to 50mA).
2. STLED50JR: Similar to the STLED25JR but with a higher output current range (20mA to 150mA).
3. STLED100JR: Similar to the STLED25JR but with a higher output current range (50mA to 300mA).

These alternative models offer different output current ranges to cater to a wider range of LED driver requirements.

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