LT1763IDE#TRPBF

Introduction

LT1763 is a monolithic voltage regulator integrated circuit. It provides a high efficiency, low noise and low dropout solution for a variety of applications. LT1763 is an adjustable step-up voltage regulator with very low input current. The operating frequency is adjustable up to 500kHz, with an integrated PWM logic circuitry.

The LT1763 are designed with both high performance and low power consumption in mind. It also utilizes a unique low dropout architecture which allows for very efficient operation. The LT1763 is also capable of working in both constant voltage and variable voltage mode depending on the application.

The LT1763 is ideal for a wide range of applications where power efficiency and low noise are key requirements. It is especially suitable for powering LCD display modules, microprocessor cores, memory systems, and a variety of other low-power applications.

Features

• High Efficiency Step-Up Voltage Regulator
• Wide Input Voltage Range (2.8V to 40V)
• Adjustable Output Voltage (2.5V to 40V)
• Integrated PWM Logic Circuitry
• Adjustable Switching Frequency (up to 500kHz)
• Integrated Low Dropout Architecture
• Low Input Current (3mA @ 2V)
• Low Noise Operation (3mVpp Noise at 2V Input)

Application Field

The LT1763 is mainly used in power supply design, typically in step-up DC to DC converters. It can be used in a variety of applications including handheld device power, medical device power, automotive power, automotive lighting, and 5V power supplies. The LT1763 is widely used in LCD displays, notebook computers, video game systems, and a variety of other electronic products. It is a popular choice for powering small and medium-sized micro-controllers and microprocessor cores.

Working Principle

The LT1763 is a step-up voltage regulator that consists of a DC/DC boost converter integrated circuit and an switching power stage. The integrated circuit contains all of the necessary controls to allow the regulator to operate in a closed loop mode, compensating for voltage spikes and changes in load current.

The power stage of the LT1763 consists of two MOSFET transistors that form an H-bridge. The H-bridge switches the current through the onboard inductor to create a DC output voltage. The switching frequency of the MOSFETs is determined by an external clock signal. The voltage and current of the DC output are sensed and used to adjust the frequency of the oscillator and thus control the output voltage of the converter.

The LT1763 also incorporates a low dropout architecture that allows it to operate with a very low input voltage. This allows it to provide a continuous and highly accurate output voltage even when the input voltage is low, making it an excellent choice for applications with limited power sources.