TLC59401RHBR

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PMIC - LED Drivers are the essential components in the designing of LEDs. The TLC59401RHBR is a single-channel LED driver that has been widely used in LED applications due to its superior performance characteristics. In this article, we will discuss the TLC59401RHBR application field and working principle.

Application Field

The TLC59401RHBR is specifically designed for LED applications. It supports a wide variety of LED configurations and can be used to drive various types of LEDs from full-color RGB LEDs to LEDs with different brightness. It has a wide operating voltage range from 2.7V to 7V, making it suitable for many kinds of LED applications.

The TLC59401RHBR also provides different levels of LED dimming. It supports analog dimming from 0.3% to 100%, as well as pulse-width modulation (PWM) dimming for more precise brightness control. It also features a maximum output current of 500mA, enabling it to power a wide array of LEDs in different applications.

The TLC59401RHBR also has several safety features such as thermal protection and short-circuit protection to ensure reliable operation even in harsh environments. Its low standby current consumption also helps reduce power consumption and extend battery life.

In addition to LED applications, the TLC59401RHBR is also suited for non-LED applications such as small motors and fans.

Working Principle

The TLC59401RHBR is a constant-current LED driver that works by converting the input voltage into a constant current level that is applied to the LED(s). It has two main components – a current-sensing circuit and a control circuit. The current-sensing circuit senses the current flowing through the LED(s) and the control circuit adjusts the output current by modulating the duty cycle of the LED driver.

The TLC59401RHBR has an integrated power MOSFET which serves as the switching element of the LED driver. The circuit controls the MOSFET’s duty cycle to regulate the current flowing through the LED(s). When the duty cycle is high, the current is at its highest level and vice-versa. This enables the TLC59401RHBR to provide accurate current control.

The TLC59401RHBR also features an integrated current-sensing resistor which is used to monitor the current flowing through the LED(s). The circuit compares the current from the current-sensing resistor to the set current level and adjusts the duty cycle of the MOSFET accordingly. This ensures that the current level remains consistent even in changing conditions.

The TLC59401RHBR also has a dimming control circuit which allows the user to control the output current of the LED driver. It can be used to adjust the current level from 0.3% to 100%. The dimming control can be done either via analog dimming or PWM dimming.

In conclusion, the TLC59401RHBR is an ideal choice for driving LEDs in a wide range of applications due to its superior performance characteristics and safety features. Its ability to accurately control and dim the current makes it the perfect choice for applications which require precise control over the LED current level.

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