LM3530UME-25A/NOPB

Product Overview

Category

The LM3530UME-25A/NOPB belongs to the category of integrated circuits (ICs) specifically designed for controlling and driving light-emitting diodes (LEDs).

Use

This product is commonly used in various applications that require LED backlighting, such as LCD displays, keypads, and indicator lights. It provides efficient and precise control over LED brightness levels.

Characteristics

• Integrated circuit for LED control and driving
• Efficient and precise brightness control
• Wide range of operating voltages
• Low power consumption
• Compact package size
• Easy to integrate into existing electronic systems

Package

The LM3530UME-25A/NOPB is available in a small outline package (SOP) with a specific pin configuration. The package ensures proper heat dissipation and protection of the integrated circuit.

Essence

The essence of the LM3530UME-25A/NOPB lies in its ability to provide accurate and efficient control over LED brightness levels, enabling optimal display performance and energy efficiency.

Packaging/Quantity

The LM3530UME-25A/NOPB is typically packaged in reels or tubes, depending on the manufacturer's specifications. The quantity per package varies but is usually in the range of several hundred to several thousand units.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Current Range: Up to 25mA
• Dimming Control: PWM (Pulse Width Modulation)
• Operating Temperature Range: -40°C to +85°C
• Package Type: SOP-8

Detailed Pin Configuration

The LM3530UME-25A/NOPB has the following pin configuration:

1. VCC: Power supply input
2. GND: Ground reference
3. EN: Enable pin for turning the device on/off
4. DIM: Dimming control input (PWM signal)
5. FB: Feedback pin for LED current regulation
6. ISET: Pin for setting the LED current
7. OUT: Output pin for connecting to LEDs
8. NC: Not connected

Functional Features

• Precise and efficient LED brightness control
• Wide input voltage range allows compatibility with various power sources
• Integrated PWM dimming control for smooth brightness transitions
• Built-in feedback mechanism for accurate LED current regulation
• Low power consumption for energy-efficient operation
• Protection features against overvoltage, undervoltage, and overtemperature conditions

Advantages and Disadvantages

Advantages

• Accurate and efficient LED brightness control
• Wide input voltage range for versatile applications
• Compact package size for easy integration
• Low power consumption for energy efficiency
• Protection features ensure device reliability

Disadvantages

• Limited output current capability (up to 25mA)
• Requires external components for proper operation
• May require additional circuitry for complex LED driving applications

Working Principles

The LM3530UME-25A/NOPB operates based on the principle of pulse width modulation (PWM). It receives a dimming control signal (PWM) through the DIM pin, which determines the duty cycle of the LED current. The integrated circuit regulates the LED current through the feedback mechanism provided by the FB pin. By adjusting the duty cycle of the PWM signal, the LM3530UME-25A/NOPB controls the average LED current, resulting in precise brightness control.

Detailed Application Field Plans

The LM3530UME-25A/NOPB finds applications in various fields that require LED backlighting or indicator lights. Some specific application areas include:

1. LCD Displays: The LM3530UME-25A/NOPB can be used to control the backlighting of LCD displays, ensuring optimal brightness levels and energy efficiency.

2. Keypads: LED backlighting for keypads in electronic devices can be efficiently controlled using the LM3530UME-25A/NOPB, enhancing user experience and visibility.

3. Indicator Lights: The LM3530UME-25A/NOPB can drive indicator LEDs in automotive dashboards, appliances, and other devices, providing clear and visible status indications.

Detailed and Complete Alternative Models

1. LM3531: Similar to the LM3530UME-25A/NOPB, this model offers additional features such as integrated ambient light sensing and automatic brightness adjustment.

2. LM2750: This alternative model provides a higher output current capability (up to 50mA) while maintaining similar functionality and package options.

3. LP5523: Designed for more complex LED driving applications, this model offers multiple independent LED channels with programmable current control.

4. TPS61165: This alternative model is optimized for driving high-power LEDs and offers a wide input voltage range, making it suitable for various lighting applications.

5. CAT410