LTC2919CMS-5#TRPBF

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Power management integrated circuits (PMICs) are components that are used to regulate the voltage within electronic products. One type of PMIC is a supervisor, which regulates the voltage supply in order to prevent over-current, over-voltage, and short circuit conditions. The LTC2919CMS-5#TRPBF is a supervisor IC designed for cost-sensitive applications and featuring 2-wire serial control and power-on reset/watchdog timer. In this article, we will discuss the application field and working principle of the LTC2919CMS-5#TRPBF.

Application Field of the LTC2919CMS-5#TRPBF Supervisor IC

The LTC2919CMS-5#TRPBF is designed primarily for use in portable consumer applications such as cell phones, PDAs, and digital cameras. Its small size and low power consumption make it well-suited for battery operated products. Additionally, the LTC2919CMS-5#TRPBF is capable of providing a power-on reset as well as watching over the supply voltage and signaling when it has dropped or risen to unacceptable levels. This functionality makes the IC useful in critical system conditions where unexpected voltage abnormalities can potentially cause failures or damage.

Working Principle of the LTC2919CMS-5#TRPBF Supervisor IC

The LTC2919CMS-5#TRPBF supervisor IC works by monitoring the main supply voltage and the input voltage of each of its outputs to prevent the system from entering unsafe conditions. These include high input voltage that could cause system damage, high ripple voltage that could cause improper operation, and inadequate supply voltage that could cause system reset events.

The IC is configured in such a way that when the supply voltage drops below a minimum level (known as “Under Voltage Lock Out,” or UVLO) the system is automatically reset. This can be further configured to suspend operation but also remain in an “on” state, which is useful in battery operated products. Additionally, the LTC2919CMS-5#TRPBF has the option of setting a maximum input voltage, or overvoltage lockout (OVLO), to protect the system from high voltage entering that could damage the system.

To further protect the system, the IC has two other features: input ripple rejection and output current limit. Ripple rejection is a way of ensuring that the input voltage remains consistent and stable, while the output current limit is used to prevent over-current conditions that could result in damage or system reset. By combining these features, the LTC2919CMS-5#TRPBF provides a highly reliable monitoring and protection function.

Conclusion

The LTC2919CMS-5#TRPBF supervisor IC is a reliable power management device designed for cost-sensitive applications. Its functionality includes monitoring main and output voltage levels to ensure safe operating conditions and providing a power-on reset as well as input ripple rejection and output current limit. These features make the LTC2919CMS-5#TRPBF well-suited for portable consumer products such as cell phones, PDAs, and digital cameras.

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