LTC3220EPF#PBF Integrated Circuits (ICs)

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The LTC3220EPF#PBF belongs to the category of PMIC - LED Drivers. It is a low profile, high efficiency, white LED driver with linear dimming control, with a maximum output current of 25 mA. This device is ideal for use in applications such as LED displays, LED backlighting and LED lighting modules where low current and/or linear dimming capabilities are required.

The key features of this device include a wide input voltage range of 1.8V to 5.5V, a low ripple current and a wide dimming range with a control input of 0.1V to 1.8V. It has a very low shutdown current of 2µA, a high efficiency of over 94%, and a maximum output current of 25 mA.

The working principle of the LTC3220EPF#PBF involves the conversion of a DC voltage on its input to DC voltage on its output. It uses the PWM (pulse width modulation) technique for dimming control, which provides a linear dimming range from 0 to 100%. When the voltage on its control pin is low, the switch is open, allowing for full current to flow through the LED. As the control voltage is increased, the duty cycle of the switch is also increased, resulting in a gradual dimming of the LED. This technique allows for linear dimming without the need for additional circuitry.

The LTC3220EPF#PBF is well suited for use in portable USB-powered devices, as it can be directly interfaced with USB power sources. It is highly efficient and has very low standby current when the LED is off. It also features a low profile package which makes it suitable for space-constrained applications.

In summary, the LTC3220EPF#PBF belongs to the category of PMIC - LED Drivers and is sealed for operation in harsh environments of temperature and/or humidity. It offers a wide voltage range, low ripple current, low standby current and linear dimming control with PWM technique. This LED driver can be used for LED displays, LED backlighting and LED lighting modules where low current and/or linear dimming capabilities are required.

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