LTC4367HMS8-1#TRPBF

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Power management integrated circuits (PMICs) are dedicated devices designed to supply and control sleep, power-on, or power-off operations for embedded systems or digital systems. A specialized PMIC, the LTC4367HMS8-1#TRPBF, is designed to provide maximum system performance and power savings efficiency when controlling a variety of devices with widely varying loads. This application note covers the LTC4367HMS8-1#TRPBF’s application fields and working principles.

Application Fields

The LTC4367HMS8-1#TRPBF was designed for comprehensive power management applications. It features a high power switch capable of handling up to 3A continuous load current, two adjustable low dropout linear regulators each providing up to 700mA and two low power on/off switches each capable of carrying 350mA current. This IC can be easily configured with a low current consumption mode enabling it to manage power consumption levels while yaw and pitch control functions are active. In addition, this IC is capable of controlling high-voltage switching and provides a wide range of protection such as current limiting, thermal shutdown, and overvoltage protection.

This IC is suitable for powering a broad range of devices, such as digital signal processing (DSP) devices, radios, digital video and audio devices, microcontrollers, and embedded systems. It also provides a great advantage in applications like handhelds and mobile systems, where space and thermal management are important considerations.

Working Principles

The main working principle of the LTC4367HMS8-1#TRPBF is that it acts as a voltage regulator and power switch for multiple load devices. In the high-power switch function, the power is controlled through a control signal, with the voltage regulation being controlled by the SHDN pin. This pin can be driven high or low, allowing the IC to control power delivery to the load. The device also provides current-limit, thermal-limit, short-circuit, and undervoltage protection.

The device’s two adjustable LDO regulators can be used to provide power to the load in either an active mode or standby mode. The active mode LDO is set via the voltage setting pin, while the standby mode LDO is set by utilizing the SHDN pin. This allows the device to optimize the power delivery to the load, reducing overall power consumption. The two low power on/off switches provide power to the load from one of the two LDOs. The LDOs are also able to control the power output of the load for increased efficiency.

The low dropout linear regulators of the LTC4367HMS8-1#TRPBF provide increased performance, efficiency, and reliability. The device also offers protection from overvoltage and overtemperature conditions, further increasing overall reliability. Additionally, the device is capable of controlling power saving modes, such as reducing voltage and current when the system is idle or not in use.

Conclusion

The LTC4367HMS8-1#TRPBF is designed for comprehensive power management applications. This device offers a wide range of features to efficiently manage the power consumption of multiple load devices. The device’s high-power switch, adjustable low dropout linear regulators, and low-power on/off switches provide increased system performance and power savings efficiency. In addition, this IC is capable of controlling both high-voltage switching and low-power saving modes, and provides numerous protection features for increased system reliability.

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