LTC3448EDD#PBF

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PMIC-Voltage Regulators – DC DC Switching Regulators play an important role in the development and implementation of multiple power sources, ranging from simple 5 volts to complex mixed voltage points. The LTC3448EDD#PBF is an integrated switcher and regulator solution optimized to meet the stringent requirements of these multiple applications. This combination of integrated and flexible design features provides an excellent opportunity to an engineer to implement a custom power solution with minimal effort and complexity. The LTC3448EDD#PBF is a high frequency, low noise switching regulator module which provides a combination of low cost and high efficiency. The device is capable of delivering up to 3.2A of output current and has low quiescent current operation. The switching regulator incorporates programmable switching frequency, soft-start circuitry, hysteretic mode control, and a selectable on/off timer that can be programmed to meet the requirements of the application. The system also integrates supervisory functions, such as power failure and over temperature protection, for safe and reliable performance.The easy-to-use design of the LTC3448EDD#PBF makes it suitable for use in distributed power systems, single module configurations, or small form factor projects. The module is based on a buck converter architecture and operates over a wide input voltage range of 3V to 5.5V. The output voltage is programmable via selected control pins and adjustable in range. The maximum operating frequency of the device is 15MHz, providing excellent frequency control accuracy, allowing the user to fine tune the switching performance to meet the specific application requirements.The LTC3448EDD#PBF operates in either Buck or Buck-boost topology, depending upon the user’s selection. For example, in Buck-boost mode, the module can be used in applications that require a boosted output above the input voltage. This mode of operation also allows for simultaneous output voltage tracking, enabling the system to deliver multiple output currents to different load voltages. In addition, the device provides predictable output voltage regulation even when the input voltage is declining or varying in the system.In normal operation, the LTC3448EDD#PBF implements a continuously conductive switching mode. In such a topology, the output voltage is regulated on a cycle-by-cycle basis and the device employs a variety of control techniques to match the output voltage with the specified requirements. This technique is achieved through current-limit control in the switch, increased pulse-width modulation (PWM) accuracy, enhanced noise reduction and constant PWM operation at high frequencies.In addition to this, the LTC3448EDD#PBF provides users with an easy to use and stable performance for a wide range of system requirements. This includes a selectable over-voltage protection (OVP) circuit and an active regulation loop for improved dynamic accuracy, as well as an adaptive deadtime control circuit to improve efficiency. The module is designed to meet the requirements of the most demanding applications, delivering an extremely low ripple, a fast transient response and a stable output voltage even under varying bulk supply conditions.The LTC3448EDD#PBF is a well-rounded and comprehensive solution for multiple power application requirements. Its impressive features make it an easy to use and robust device that allows designers to develop innovative solutions without sacrificing efficiency and performance. With its complete range of control and protection features, combined with its ability to easily adapt to a wide range of input and output voltages, the LTC3448EDD#PBF provides an excellent solution for efficient and reliable power delivery.

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