LT1076CQ#PBF

Voltage - Output (Min/Fixed):	2.5V
Base Part Number:	LT1076
Supplier Device Package:	5-DDPAK
Package / Case:	TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	100kHz
Current - Output:	2A (Switch)
Voltage - Output (Max):	35V
Series:	--
Voltage - Input (Max):	45V
Voltage - Input (Min):	8V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck, Boost, Flyback
Output Configuration:	Positive or Negative
Function:	Step-Up, Step-Down, Step-Up/Step-Down
Part Status:	Active
Packaging:	Tube

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Introduction

LT1076CQ#PBF is a regulator from the family DC DC Switching Regulators from the voltage regulator manufacturers Linear Technologies. As the power management interface controller (PMIC) is the smallest integrated circuit device- used in power management- it is important to understand the application field and working principle of the LT1076CQ#PBF.

Application Field

The LT1076CQ#PBF is used for multiple purposes such as providing the regulated output voltage in multiple applications like computers, laptops, toys, miniature robotic systems, remote control applications, among others. Its versatility enables its application in architectures that require a high output current and an efficiency higher than 75%. The LT1076CQ#PBF is well adapted for high accuracy, low output ripple, over-temperature protection, over- current protection and adjustable output voltage from 0.6 V to 18 V. All its features enable that the LT1076CQ#PBF is used in steps-up (boost), step-down (buck), and inverting (reversing) switching regulator configurations.

Working Principle

The working principle of the LT1076CQ#PBF is based on its internal control loop, which includes an error amplifier, a programmable oscillator, as well as amplifiers and control circuitry. It is with these different elements, with the embedded duty-cycle proportional controller, that the output voltage is regulated.The power stage is based on a switched transistor driven in pulse-width modulation (PWM) mode with an internal rate of 10 kHz. Depending of its requirements, the LT1076CQ#PBF allows driving a variety of power elements, from a single transistor NPN, to a full bridge topology. The LT1076CQ#PBF, for all its features, has the capability to handle DC to DC conversion applications up to 3A (continuous) or 5A (peak), with an absolute maximum rating of 50V for the input voltage and an output current of up to 50mA (depending of the output voltage). Its features also include soft-start, and over voltage, over current and under-voltage lockouts protections.

Conclusion

In conclusion, the LT1076CQ#PBF is a device that provides an efficient power management system with an adjustable and regulated output voltage. Its internal control loop, composed of different elements, allows the regulation of the output voltage. With its capability to handle up to 3A (continuous) or 5A (peak) of output current, and its multiple protections, the LT1076CQ#PBF is a reliable option for multiple applications with the requirement of a regulated power supply. Despite its versatility, it is important to take in count the input and output ranges of the device to ensure proper operation. Any mismatch between its features and the power requirements of the application can reduce its performance, or even damage the device. It is for this reason that it is important to read the LT1076CQ#PBF’s datasheet to understand what it can do, and how much current it can handle, to ensure that it is the best option for your power management needs.

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