MIC2292C-15YML-TR

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The MIC2292C-15YML-TR is a power management integrated circuit (PMIC) designed to drive LEDs. It is designed to provide a constant current output of up to 25mA to drive LEDs, while also protecting the circuits and extending their lifetime. The device features a low-side, high-current-gain, current-mode PWM (pulse width modulation) controller with a wide operating temperature range and low noise operation. In addition, this device comes with a flexible input voltage range, enabling it to be used in a wide variety of applications.

The MIC2292C-15YML-TR is a peak current-mode step-down LED driver with two current-sensing and two switching balls connected in parallel. The device has two separate external control pins, one for constant current and one for analog dimming that enable brightness control. The LED current is adjustable using a low-side sense resistor and a single external resistor connected to the REF pin. In addition, the device features an enable pin that allows remote control of the LED state.

The working principle of the MIC2292C-15YML-TR is based on the current-mode control. When the current-sense signal crosses the reference voltage, the output switch (an N-MOSFET) is turned on. This causes the LED to be driven with a constant current, which is proportional to the current-sense signal. The LED current is referenced to the input voltage, not the LED voltage, resulting in a stable current even if the LED voltage varies. The controller also supports two different dimming modes, analog dimming and pulse-width-modulation (PWM) dimming.

In the analog dimming mode, the external resistor connected to the REF pin is connected to the analog signal for controlling the LED brightness. The REF pin setting provides a full-scale current of 25mA and can be adjusted using the external resistor for precise current regulation. In PWM dimming mode, a high-frequency signal is applied to the EN pin to produce a pulse width modulated signal which is used to modulate the LED current.

The MIC2292C-15YML-TR is primarily used in a variety of applications, such as smart lighting systems, automotive, consumer electronics, medical, and industrial lighting. It can also be used in applications needing high efficiencies and high current capabilities such as powered communications antennas and outdoor lighting systems.

Overall, the MIC2292C-15YML-TR is an ideal solution for driving LEDs in various applications. This device offers a wide input voltage range, constant current output, high efficiency, and low noise operation. In addition, it also supports two different dimming modes, analog dimming and PWM dimming, for precise brightness control.

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