SSL2101T/N1,518 Integrated Circuits (ICs)

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Lighting Equipment is one of the most important components in any kind of electronic product. Thanks to the development of science and technology, PMIC - LED Drivers, such as SSL2101T/N1,518, can provide an exact working principle and a variety of applications to meet the requirements of lighting equipment. This article will outline the applications field and working principle of SSL2101T/N1,518.

Applications Field

The SSL2101T/N1,518 PMIC features a constant-current switching regulator that is stable and resists the power fluctuation. It is the ideal choice for lighting products and offers a variety of oscillator frequencies. It also includes a start circuitry, such as Soft and Hard Start, which can be used to reduce ringing and overshoot in Headlight applications, as well as other applications. It also has a wide operating voltage range and high power efficiency, which make it suitable for use in a variety of lighting products.

Some applications for the SSL2101T/N1,518 PMIC include the following:

• Office lighting
• Residential lighting
• Automotive lighting
• Street lighting
• Sign and indicator lighting
• Industrial lighting
• Outdoor lighting

Working Principle

The working principle for the SSL2101T/N1,518 PMIC is based on the constant-current, zero-voltage switching (CC/ZVS). The operation of the drivers is based on the fact that the current difference is constant between the input voltage and the output voltage, while the output voltage varies to meet the input current. This is done by controlling the on/off states of the mosfets in the drivers. The SSL2101T/N1,518 PMIC features a boost topology and a fixed output voltage. Thus, the output voltage is always proportional to the input voltage.

The SSL2101T/N1,518 also features a start circuitry, which prevents inrush current and overshoot or ringing in the output voltage during startup. This circuitry consists of a soft-start circuit, which reduces the di/dt and output voltage, and a hard-start circuit which turns on the input mosfet at the beginning of startup, allowing for a smooth transition to an operating condition with the output voltage staying within the limits.

In addition, the SSL2101T/N1,518 PMIC includes a variety of oscillator frequencies, which can be used to adjust the output current and voltage levels to achieve the desired illumination level. The oscillator frequency determines the switching frequency. A higher switching frequency will result in a faster current rise and fall time, which may be beneficial for some applications.

The SSL2101T/N1,518 PMIC also features an open short-circuit protection, which prevents excessive current flowing into the LED when a short circuit occurs. It also provides an internal protection circuit that detects an over-temperature condition and shuts down the output current to prevent damage.

Conclusion

The SSL2101T/N1,518 PMIC is an ideal choice for lighting products that require precise control over the output current and voltage levels. It features constant-current switching technology with a start circuitry, a variety of oscillator frequencies, and an open short-circuit protection. This PMIC can be used in a variety of lighting applications, including office, residential, automotive, street, sign and indicator, industrial, and outdoor lighting.

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