LTC3374EFE#PBF

Introduction

Power Management Integrated Circuits (PMICs) enable designs to draw more power from a source without increasing the risk of an overload. The DC/DC switching regulator LTC3374EFE#PBF, when included in a design, is able to efficiently convert a wide range of input voltages into the desired output voltage and current, making it the ideal PMIC for power-sensitive applications.

Features

The LTC3374EFE#PBF manages to frame itself in a tiny 32-pin 2.0 x 2.75 mm QFN package, so it requires minimal board space. Nevertheless, its features are impressive as it can accept input voltage from 2.7 to 16 V, and is able to regulate a 5 V output over a 0.5 V to 5.7 V range. It can provide 600 mA maximum current and operates within a -40ºC to +125ºC temperature range. The constant current and overvoltage protections provided make it useful for battery charger, USB Charger, and other sensitive device applications.

Application field

The extensive input voltage range, multiple protection features and embedded quick-charge protocol makes the LTC3374EFE#PBF ideal for a variety of applications, such as automotive, mobile phones/tablets/laptop charger, as well as power supply design, IoT and embedded systems.

Working principle

The LTC3374EFE#PBF works by controlling the high-side and the low-side MOSFETs connected to an inductor, a capacitor and the output load. The supply voltage is first input to the internal linear regulator, which provides a 5V gate drive voltage for the MOSFETs. During the \'on\' portion of the cycle, the high-side MOSFET charges the inductor. As the high-side MOSFET opens and the low-side MOSFET closes, the inductor supplies it\'s stored energy through the low-side MOSFET to the output capacitor. During the \'off\' portion of the cycle, the low-side MOSFET remains close, aiding in maintaining a steady output voltage.

Conclusion

The LTC3374EFE#PBF DC/DC switching regulator is the ideal choice for an efficient and reliable power management system in a wide range of applications. Its wide input voltage range, several protection features and embedded quick-charge protocol make it capable of meeting the needs of demanding applications. Additionally, its tiny size allows it to fit into even the most space-restricted designs.