LP3470IM5-4.8

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LP3470IM5-4.8 is a member of the Analog Integrated Circuits (ICs) family of power management ICs (PMICs) developed by Texas Instruments. It is a specialized IC specifically designed for consumer applications. The LP3470IM5-4.8 is a voltage supervisor with a wide range of operating conditions, providing control, protection and monitoring functions for consumer applications. This article will explain the application field and working principle of the IC.

The LP3470IM5-4.8 is designed specifically to monitor and control consumer electronics and home appliances, such as computers, mobile phones, printers, game consoles, set-top boxes and other consumer electronics. It features a wide input voltage range (2.2V - 8.5V) which allows the device to operate in a variety of power supply conditions. The low supply current (10.5uA max) enables long operating times on battery powered systems. The LP3470IM5-4.8 also includes an integrated pulse-width modulation (PWM) generator, which allows for dynamic voltage and current control for power gating of consumer devices. Furthermore, it has extra features for data and signal integrity protection, such as reverse battery and over-current protection, as well as high-z outputs for signal isolation.

The LP3470IM5-4.8 is offered in a small 4mm x 5mm TSOP-8 package, which minimizes board space. The device has a low quiescent current of 45uA and has a operation temperature range of -40°C to +85°C. It is also RoHS compliant and AECQ-100 qualified.

In terms of its application field, the LP3470IM5-4.8 is a perfect choice for consumer electronics and home appliances. It can be used to monitor, control and protect the device, which increases the reliability of the device. It is also ideal for automotive applications, as its wide input voltage range allows the device to be used in applications with varying power supply voltages.

The working principle of the LP3470IM5-4.8 can be summarized as follows: The device monitors the input voltage, and if it falls lower than the upper threshold (VPOR), it will switch to the active phase. If the input voltage rises higher than the lower threshold (VNEG), it switches back to the inactive phase. The pulse-width modulated (PWM) outputs are used to control the power supply and devices connected to it. It also features adjustable hysteresis and it can provide up to one hundred millisecond delay time. The output current (ILED) can be adjusted from 0.2mA to 20mA.

The LP3470IM5-4.8 is a highly versatile and reliable voltage supervisor, ideal for controlling and monitoring consumer electronics and home appliances. Its wide operating conditions and adjustable parameters make it highly flexible and suitable for a wide range of applications. Its small size and low power consumption also make it an ideal choice for embedded applications and applications with limited space.

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