MIC2289C-34YD6-TR

Voltage - Output:	34V
Base Part Number:	MIC2289
Supplier Device Package:	TSOT-23-6
Package / Case:	SOT-23-6 Thin, TSOT-23-6
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Applications:	Backlight
Dimming:	Analog, PWM
Frequency:	1.2MHz
Current - Output / Channel:	750mA (Switch)
Series:	--
Voltage - Supply (Max):	10V
Voltage - Supply (Min):	2.5V
Number of Outputs:	1
Internal Switch(s):	Yes
Topology:	Step-Up (Boost)
Type:	DC DC Regulator
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The MIC2289C-34YD6-TR is a high-efficiency and low-noise Pulse Width Modulated (PWM) controller IC and is part of the PMIC - LED Drivers family with a 6-to-34V input voltage range. It is widely used in applications such as automotive, industrial or other high-power applications needing electronic dimming. Its versatility and compatibility with input voltages ranging from 6V to 34V makes it ideal for use in a wide range of applications.

Application Field and Working Principle

The MIC2289C-34YD6-TR controller is used in LED applications that need high efficiency and low noise. Its 6-34V input voltage range makes it suitable for a wide range of applications including automotive, industrial, and other high-power applications, as well as for universal dimming. The controller includes two independent overload protection for both input and output power, improving system reliability. It also provides a selectable operating frequency and adjustable PWM dimming range from 0.2-100% of the maximum current, ensuring compatibility with different LED drivers.The principle of operation is as follows: During operation, the MIC2289C-34YD6-TR takes an input voltage from the LED driver, senses the LED current, and modulates the LED current to achieve dimming. At first, an internal voltage reference and error amplifier is used to generate the error signal in order to compare the LED current against the desired current level. The voltage reference and error signals are used to generate a control signal that drives the external MOSFET, which in turn controls the LED current. The PWM dimming range and operating frequency can be adjusted by external components, making it possible to precisely control the LED current. Additionally, the over current protection and under voltage protection circuits ensure the reliability of system operation.

Conclusion

The MIC2289C-34YD6-TR controller is a part of the PMIC - LED Drivers family and is widely used in applications requiring high efficiency and low noise. Its 6-34V input range makes it suitable for a wide range of applications including automotive, industrial, and other high-power applications. The controller includes two independent overload protection for both input and output power, improving system reliability. It provides a selectable operating frequency and adjustable PWM dimming range, allowing precise control of the LED current. It also provides over current protection and under voltage protection circuits, ensuring the reliability of system operation.

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