LM3554TME/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: LED Driver
• Characteristics:
  • High efficiency
  • Small package size
  • Wide input voltage range
  • Adjustable output current
• Package: Thin Shrink Small Outline Package (TSSOP)
• Essence: This IC is designed to drive LEDs efficiently and effectively.
• Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Current Range: 10mA to 500mA
• Operating Temperature Range: -40°C to +85°C
• Dimming Control: PWM (Pulse Width Modulation)
• Protection Features:
  • Over-temperature protection
  • Short-circuit protection
  • Under-voltage lockout

Pin Configuration

The LM3554TME/NOPB IC has the following pin configuration:

1. EN (Enable)
2. GND (Ground)
3. VIN (Input Voltage)
4. VOUT (Output Voltage)
5. FB (Feedback)
6. DIM (Dimming Control)

Functional Features

• Efficiently drives LEDs with adjustable output current.
• Supports dimming control through PWM signal.
• Provides protection against over-temperature and short-circuits.
• Operates within a wide input voltage range.
• Compact package size allows for space-saving designs.

Advantages and Disadvantages

Advantages: - High efficiency ensures optimal power usage. - Adjustable output current allows for flexibility in LED applications. - Wide input voltage range accommodates various power sources. - Compact package size enables compact circuit designs.

Disadvantages: - Limited output current range may not be suitable for high-power LED applications. - Requires external dimming control circuitry for PWM dimming.

Working Principles

The LM3554TME/NOPB is a constant current LED driver IC. It regulates the current flowing through the connected LEDs, ensuring consistent brightness. The input voltage range allows it to be used with various power sources. The adjustable output current feature enables customization based on specific LED requirements. The IC also incorporates protection features such as over-temperature and short-circuit protection to ensure safe operation.

Detailed Application Field Plans

The LM3554TME/NOPB is commonly used in various applications, including:

1. Portable electronic devices: Provides efficient LED driving for backlighting displays, keypad illumination, and indicator lights in smartphones, tablets, and portable gaming devices.
2. Automotive lighting: Enables efficient LED driving for interior and exterior automotive lighting applications, such as dashboard illumination, dome lights, and accent lighting.
3. General lighting: Suitable for low-power LED lighting applications, such as decorative lighting, small area illumination, and task lighting.

Detailed and Complete Alternative Models

1. LM3409: A similar LED driver IC with a higher output current range of up to 1A.
2. LM3410: Offers a wider input voltage range and higher efficiency compared to LM3554TME/NOPB.
3. LM3601: Specifically designed for automotive lighting applications, providing enhanced protection features.

These alternative models offer different specifications and features, allowing designers to choose the most suitable option for their specific application requirements.

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