LTC1503IS8-1.8#PBF

Voltage - Output (Min/Fixed):	1.8V
Base Part Number:	LTC1503
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	600kHz
Current - Output:	100mA
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	6V
Voltage - Input (Min):	2.4V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Charge Pump
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tube

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PMIC - Voltage Regulators - DC DC Switching Regulators

DC-DC switching regulators, or simply DC-DC regulators, are devices that control electrical signals between two circuits to regulate voltage. They are an essential component of many modern electrical systems and are widely used in a variety of applications from computers, mobile phones, and other consumer electronics, to medical, automotive, and power management applications. The LTC1503IS8-1.8#PBF is a specific type of DC-DC switching regulator that is designed for modern high-density, high-efficiency applications.

Overview

The LTC1503IS8-1.8#PBF is a low noise, high efficiency, synchronous, step-down DC-DC regulator. It utilizes advanced switching technology to deliver up to 1.8A of continuous output current, while operating at up to 91.5% efficiency. It has an integrated power MOSFET, which requires fewer external components and reduces board space, cost, and complexity. It features a low quiescent current of 8µA, making it an ideal choice for Bluetooth and mobile devices that require low power consumption. The LTC1503IS8-1.8#PBF provides output voltage accuracy down to 1%, output voltage tracking, and fast load-step and line-transient response. The device supports both pulse-width modulation (PWM) and pulse frequency modulation (PFM) modes. It is available in a 6-pin TSOT and 8-pin, 5mm x 4mm DFN package and is designed to operate over an extended temperature range of -40°C to 105°C.

Applications

The LTC1503IS8-1.8#PBF DC-DC regulator is a versatile device that can be used in a variety of applications. It is ideal for handheld and portable devices such as mobile phones and tablets, where it can be used to regulate the power supply of the device and extend battery life. It is also suitable for automotive, industrial, and medical applications, where it can be used to provide a stable supply of power to sensitive electronics. The fast load-step and line-transient response of the LTC1503IS8-1.8#PBF makes it ideal for applications that require quick reactions to changes in the environment or load.

Working Principle

The LTC1503IS8-1.8#PBF regulates voltage by stepping down or reducing the input voltage to the desired output voltage. This is accomplished by using the integrated power MOSFET to transition between an on state, where current is drawn from the input and delivered to the output, and an off state, where the power is cut off as the desired output is reached. The switching frequency of the regulator can be controlled either by pulse-width modulation (PWM), which sets an appropriate switching frequency in order to maintain voltage accuracy, or pulse frequency modulation (PFM), which reduces the on-time of the power MOSFET to reduce power dissipation. The LTC1503IS8-1.8#PBF also features output voltage tracking, which allows the output voltage to track the input voltage as it changes, ensuring that the output voltage remains reliable in changing conditions.

Conclusion

The LTC1503IS8-1.8#PBF is a high-efficiency, low-noise DC-DC switching regulator that is suitable for a variety of applications. It offers excellent output voltage accuracy, fast load-step and line-transient response, and supports both PWM and PFM modes. It is available in a 6-pin TSOT and 8-pin 5mmx4mm DFN package and is designed to operate over an extended temperature range of -40°C to 105°C. As a result, the LTC1503IS8-1.8#PBF is an ideal choice for handheld and portable devices, automotive applications, as well as industrial and medical applications that require a stable supply of power.

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