LNBK20D2-TR Integrated Circuits (ICs)

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Voltage regulators are essential components in any power management circuits. They are used to maintain a consistent, steady voltage level for devices operating within limited power eligibility and temperature ranges. The LNBK20D2-TR is a special purpose voltage regulator IC intended for applications demanding robust, current-limited, low-noise output. It is a versatile, monolithic component that can easily mode-switch among two distinctly different working modes: a linear regulator and a low power, high voltage switch regulator.

Application Fields of LNBK20D2-TR

The LNBK20D2-TR voltage regulator is used in applications requiring current-limited, low-noise output, such as: lighting equipment, robotics, industrial control systems, electronic instruments, medical applications and automation control systems. Due to its low no-load quiescent power, the LNBK20D2-TR is also suitable for battery operated systems and in turn, can successfully extend the battery lifespan. Additionally, the ultra-low power consumption greatly reduces power waste for industrial or mobile applications.

Working Principle of LNBK20D2-TR

The LNBK20D2-TR is designed as a mode-switching device that allows it to operate in either linear or switch-mode regulator modes. When operating in linear regulator mode, it uses an external feedback mechanism to maintain the output voltage of the device constant. In switch-mode operations, the device uses an integrated regulating circuit and works by modulatating the switch-node voltage by comparing the feedback voltage to the internal reference voltages. In both modes, the LNBK20D2-TR ensures an extended output voltage range and line-load transient protection. The device also provides complete protection against short-circuits and thermal runaway.

The operating frequency of the LNBK20D2-TR is generally controlled by an external current-mode PWM (pulse width modulation) or hysteretic controller circuit. The hysteretic controller circuit monitors the output voltage in order to track the desired voltage. If the output voltage falls below the desired level, the circuit increases the switch-node voltage to increase the output voltage. When the output voltage reaches the desired level, the circuit decreases the switch-node voltage to decrease the output voltage, thereby resulting in a constant output.

Conclusion

The LNBK20D2-TR is a versatile, monolithic voltage regulator with a low-noise output and current-limiting capability. It is ideal for a wide range of applications, such as: lighting equipment, robotics, industrial control systems, electronic instruments, medical applications and automation control systems, due to its mode-switching ability, wide output voltage range and line-load transient protection. Additionally, it is also suitable for battery operated systems due its low no-load quiescent power and ultra-low power consumption.

The specific data is subject to PDF, and the above content is for reference