LM3533TME-40A/NOPB

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PMIC - LED Drivers are semiconductor components that form the backbone of many electrical systems and devices. The LM3533TME-40A/NOPB is a PWM dimmable buck-boost LED driver integrated circuit (IC) specifically designed to support multi-string arrays and multi-channel systems. It is capable of delivering at least 40W of continuous output power from a 4.5V-60V input to maximize energy efficiency. This highly integrated IC includes an onboard power MOSFET, an OVP and UVLO protection, a temperature monitoring circuit, an auto-dimming circuit, and six Dimming Input Modes which provide for high precision light emission.

The LM3533TME-40A/NOPB is a fully-programmable, single-channel constant current LED driver and it comes with a dimming function with up to 4 independent LED strings. It allows for truly flexible LED lighting and power control, allowing the user to set the LED brightness and power levels and even variations in the conditions of the LED strings depending on their selection.

This LED driver IC is designed to provide high efficiency and a wide operating input voltage range (as low as 4.5V and as high as 60V) to support a variety of applications such as lighting systems, automotive lighting and signboards. It has a wide operating temperature range (-40°C to +85°C ) and can operate up to +175°C when housed in a suitable package.

The LM3533TME-40A/NOPB LED driver IC comes with a variety of advanced features, such as a low EMI-impact PWM dimming low-shift protection circuit, and a full safety system to ensure the stability of the LED driver under abnormal conditions. It also has a Flexible dimming mode with 6 different Dimming Inputs, PWM dimming from 0.2 Hz to 2.4 KHz and up to 16-bit resolution, and a Finited State Machine for internal sequencing resulting in higher effectivity and fewer components.

Furthermore, the LM3533TME-40A/NOPB advanced features integrate several protections, such as Thermal Protection with OVP (over-voltage protection) and UVLO (under-voltage protection), to ensure device safety and system reliability. This LED driver IC also offers excellent electrical performance, with a wide input voltage range, a low Minimum On-Time and Quiescent Current, and fast transient response.

In terms of Working Principle, the LM3533TME-40A/NOPB is a buck-boost LED driver IC. It works by regulating the input voltage from the battery, and it outputs a constant current to drive the LED array, this prevents damage caused by over-voltage. The maximum operating voltage of the LED array can be set by the user, and the LED driver IC will automatically adjust its output current to maintain the LED’s brightness.

Furthermore, the LM3533TME-40A/NOPB offers excellent electrical performance, with a wide input voltage range, a low Minimum On-Time and Quiescent Current, and fast transient response. This LED driver IC has a few unique features, including thermal and load stage protection, allowing it to shut down when the temperature rises above a certain level or when the load exceeds a certain level. The LM3533TME-40A/NOPB also comes with a comprehensive dimming control, allowing the user to adjust the brightness of the LEDs to achieve a desired output.

In conclusion, LM3533TME-40A/NOPB is a highly efficient, high power LED driver IC designed to support Multi-String array and Multi-Channel systems. It is designed to offer a wide range of features and benefits, including a low EMI-impact PWM dimming low-shift protection circuit, Flexible dimming mode with 6 different dimming inputs, PWM dimming from 0.2 Hz to 2.4 KHz and up to 16-bit resolution and thermal protection with OVP and UVLO protection. The LM3533TME-40A/NOPB is a fully programmable, single-channel constant-current LED driver IC and provides excellent electrical performance with a wide input voltage range, a low Minimum On-Time and Quiescent Current, and fast transient response.

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