SI-8008HD

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The SI-8008HD is a DC-DC switching regulator that is commonly used in power management and integration (PMIC) applications. The device offers a wide input voltage range of 4.2 to 75V and provides 256kHz, 4A/1A/0.3A, fixed switching frequency operation. The SI-8008HD is particularly suitable for applications where high efficiency, high power density and low EMI are needed.

The SI-8008HD is designed for buck, boost, buck-boost and SEPIC applications. It is a very cost-effective solution for many applications, such as low-power LED lighting and motor control. The main features of the device include a wide input voltage range, adjustable switching frequency up to 256 kHz, pulse-width modulation (PWM) or pulse-frequency modulation (PFM) control, over-temperature, overload and short-circuit protections, and cycle-by-cycle current limit.

The SI-8008HD\'s working principle is based on the switching stage and pass-through stage. In the switching stage, the device uses current mode control to ensure an efficient regulation of the output voltage. During the switch-on phase, inductor current is monitored and compared with an internal reference. When the current exceeds a certain level, the regulator switches off the switch, ending the switch-on phase, and enters into the pass-through stage. During this stage, the voltage on the inductor is converted to an output voltage and delivered to the load.

The SI-8008HD is designed for a wide range of applications. It is ideal for powering small digital electronic devices and consumer products that require low-noise, high-efficiency and multiple operating modes. It can also provide the power supply needs of medium-power consumer and industrial electronics, ranging from low-noise LED drivers to low voltage motor controllers. Additionally, this device is also suitable for powering portable electronic devices, such as mobile phones, tablet PCs, digital cameras and portable media players.

In summary, the SI-8008HD is a very efficient DC-DC switching regulator that offers wide input voltage range, adjustable frequency, and various protection features. Its efficient and low-noise operation makes it an ideal choice for a variety of PMIC applications, from low-power LED lighting to low-voltage motor controllers.

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