LM3528TME/NOPB Integrated Circuits (ICs)

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The LM3528TME/NOPB is a PMIC (Power Management Integrated Circuit) with an LED driver stage. It has been designed to provide monochrome LED lighting for notebook and tablet PCs. The device operates from a single lithium ion cell, enabling up to a 6.5V input range. It can also be integrated into other portable devices, such as camping light, corrosion detector and educational toys. The LM3528TME/NOPB has a wide range of features and specifications, making it suitable for a variety of applications.

The feature set of the LM3528TME/NOPB includes a step-up converter, current-mode or pulse-width-modulated (PWM) control, adjustable operating frequency, multiple current sources, internal soft-start, overtemperature protection and short-circuit protection. These features make the device suitable for various application requirements. The device also has a small footprint, making it ideal for tight space applications. The device contains an integrated low-voltage protection, which prevents overvoltage damage when the device is powered down. Additionally, the device can be used with a 3.3V logic interface for programming, providing a simple and intuitive programming interface.The LM3528TME/NOPB is designed for use in a wide range of applications such as LED accent lighting, backlighting, signage, automotive and general illumination.

In LED accent lighting applications, the LM3528TME/NOPB can be used to drive LED strings of up to 10V, providing linear current control by means of its programmable current sources. The on-chip synchronized PWM output can be used to generate unique lighting effects. The device can also be used in backlighting applications, where it can be used to drive strings of high-brightness LEDs. The on-chip synchronous PWM output enables smooth dimming of the LED backlight, while the adjustable switching frequency ensures minimal audible noise. Additionally, the device can be used in automotive applications, where it can be used to drive LED strings in headlamps and taillights. The LM3528TME/NOPB can also be used in general illumination applications, providing up to 1.5A of LED current with up to 12V of LED string voltage for cost-effective solutions.

The working principle of the LM3528TME/NOPB is relatively simple. The device takes a voltage input of up to 6.5V and uses an internal voltage regulator to provide a stable voltage supply for its circuitry. The device then produces a large current from this input voltage, which is then used to drive the LEDs. The device can produce a range of current levels depending on the programmed current sources. The on-chip PWM output can then be used to modulate the LED current, enabling the device to produce smooth linear dimming. Additionally, the LM3528TME/NOPB has integrated protection features, such as over-temperature and over-current protection, which help to protect the device against damage.

The LM3528TME/NOPB is an ideal device for driving monochrome LED lighting in portable, battery-powered devices. Its wide range of features and specifications make it suitable for a wide range of applications, such as LED accent lighting, backlighting and general illumination. The device’s on-chip synchronous PWM output enables smooth dimming of the LEDs, while its protection features help to protect the device from damage. With its small footprint and low voltage requirements, the LM3528TME/NOPB is an ideal solution for portable applications.

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