Category: Integrated Circuit (IC)
Use: The LM3549SQ/NOPB is a versatile integrated circuit designed for controlling and driving light-emitting diodes (LEDs). It provides efficient and precise control of LED brightness, making it suitable for various lighting applications.
Characteristics: - High efficiency LED driver - Wide input voltage range - Adjustable LED current - PWM dimming control - Thermal shutdown protection - Small form factor
Package: The LM3549SQ/NOPB is available in a compact 16-pin LLP package, which ensures easy integration into space-constrained designs.
Essence: This IC serves as a crucial component in LED lighting systems, enabling accurate control and efficient operation of LEDs.
Packaging/Quantity: The LM3549SQ/NOPB is typically sold in reels or tubes, with a quantity of 2500 units per reel/tube.
The LM3549SQ/NOPB features the following pin configuration:
Advantages: - High efficiency LED driver, minimizing power consumption - Wide input voltage range allows compatibility with various power sources - Precise brightness control through PWM dimming - Thermal shutdown protection ensures safe operation - Small package size enables easy integration into compact designs
Disadvantages: - Limited output current range of up to 1A may not be suitable for high-power LED applications - Lack of pin configuration options limits flexibility in circuit design
The LM3549SQ/NOPB operates by regulating the current flowing through the connected LEDs. It uses a feedback mechanism to adjust the LED current based on the desired brightness level set through the PWM dimming control. The IC continuously monitors the LED current and adjusts it accordingly to maintain the desired brightness.
The LM3549SQ/NOPB is widely used in various lighting applications, including: - Portable electronic devices (e.g., smartphones, tablets) - Automotive interior lighting - Backlighting for LCD displays - General-purpose LED lighting
For those seeking alternative options, the following models can be considered: - LM3409SQ/NOPB - LM3410SQ/NOPB - LM3424SQ/NOPB - LM3492SQ/NOPB
These models offer similar functionality and characteristics, providing alternatives for different design requirements.
In conclusion, the LM3549SQ/NOPB is a highly efficient LED driver IC that offers precise control over LED brightness. Its wide input voltage range, adjustable current, and compact package make it suitable for various lighting applications. While it has some limitations in terms of output current range and pin configuration options, it remains a reliable choice for LED driving needs.
What is the input voltage range for LM3549SQ/NOPB?
- The input voltage range for LM3549SQ/NOPB is typically 2.7V to 5.5V.
How much current can LM3549SQ/NOPB sink and source?
- LM3549SQ/NOPB can sink up to 30mA and source up to 20mA of current.
What is the typical efficiency of LM3549SQ/NOPB in LED driver applications?
- The typical efficiency of LM3549SQ/NOPB in LED driver applications is around 90%.
Can LM3549SQ/NOPB be used for backlighting in LCD displays?
- Yes, LM3549SQ/NOPB is suitable for backlighting in LCD displays.
What is the maximum frequency of the PWM dimming input for LM3549SQ/NOPB?
- The maximum frequency of the PWM dimming input for LM3549SQ/NOPB is typically 30kHz.
Is LM3549SQ/NOPB suitable for battery-powered applications?
- Yes, LM3549SQ/NOPB is suitable for battery-powered applications due to its low power consumption.
Does LM3549SQ/NOPB have built-in over-temperature protection?
- Yes, LM3549SQ/NOPB includes built-in over-temperature protection to ensure safe operation.
Can LM3549SQ/NOPB be used in automotive lighting applications?
- Yes, LM3549SQ/NOPB is suitable for automotive lighting applications.
What is the thermal shutdown temperature of LM3549SQ/NOPB?
- The thermal shutdown temperature of LM3549SQ/NOPB is typically 150°C.
Is LM3549SQ/NOPB compatible with I2C interface for digital control?
- No, LM3549SQ/NOPB does not support I2C interface for digital control; it uses analog dimming control.