LM3432SQE/NOPB

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LED drivers are common electronic devices that are used in various applications for the purpose of powering light-emitting diodes (LEDs). They are generally employed to provide a stable current or voltage source that is capable of regulating the current from the source in order to keep the LEDs stable and well-lit. Some of the available LED drivers in the market are Arduino-based designs, discreet driver circuits and integrated circuits; among the leading suppliers of such products is Texas Instruments. The LM3432SQE/NOPB is a high-power intermediate driver IC designed to drive up to nine discrete LEDs.

This device integrates the essential components in an LED system, such as a high-voltage power switch, current-sensing circuitry and a controlled current source, into a single chip. It features a single-cycle dimming window and can achieve very accurate color control, making it suitable for applications such as OLED and LCD backlighting, automotive lighting, electronic billboards, digital signs and displays.

The LM3432SQE/NOPB is based on a boost topology that is used to create a current source from the input voltage. It can be used to drive up to nine LEDs in series and offers overcurrent protection. It also supports both analog and PWM dimming. An internal current sense amplifier is used to limit the peak current, which is set by an external current sense resistor. This limits the range of current levels that can be applied to the LED string, as current levels outside this range will be limited by the protection circuit.

The LM3432SQE/NOPB is designed with peak current sensing, wide input voltage operation (3V to 32V), and low start-up voltage (down to 0.3V). These features make it suitable for a variety of small display and luminaire applications. This device also includes short-circuit protection, under-voltage protection, over-temperature protection, and wide dimming range of 0.5% to 100%.

In addition, the LM3432SQE/NOPB features an integrated current limiter with a fast response time, allowing it to protect the LEDs from sudden overloading current. This device is also designed to provide a high efficiency (typically over 92%) and a high-power factor (up to 95%) in a wide temperature range (-40°C to +125°C).

The LM3432SQE/NOPB is an ideal device for applications that require accurate color control and high efficiency. It offers features such as adjustable switching frequency and low start-up voltage, which make it a suitable device for a variety of small display and luminaire applications. With its wide range of features, the LM3432SQE/NOPB is an excellent choice for LED driving applications.

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