LTC2911HDDB-2

Series:	--
Part Status:	Obsolete
Type:	Multi-Voltage Supervisor
Number of Voltages Monitored:	3
Output:	Push-Pull, Totem Pole
Reset:	Active Low
Reset Timeout:	Adjustable/Selectable
Voltage - Threshold:	2.338V, 3.086V, Adj
Operating Temperature:	-40°C ~ 125°C (TA)
Mounting Type:	Surface Mount
Package / Case:	8-WFDFN Exposed Pad
Supplier Device Package:	8-DFN (3x2)

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Introduction

Power Management Integrated Circuit (PMIC) - Supervisors are semiconductor devices usually used in power systems. The LTC2911HDDB-2 is a supervisor that was designed by Linear Technology, and first released in December 2020. It is a low-power, cost-effective, and highly-integrated device that has a variety of applications.

Applications

Supervisors like the LTC2911HDDB-2 are particularly useful when being used in portable or mobile applications. This supervisor is capable of monitoring multiple supply voltages and can detect power-supply and power-on-reset conditions over a wide range of input voltages.This particular supervisor is also capable of monitoring a variety of battery types and can be integrated with a host controller to enable remote communication. Additionally, it supports a wide range of clock sources and can be used to manage system reset windows. It can also be used to generate alarms and reset signals, depending on the system’s configuration.The LTC2911HDDB-2 supervisor specifically can be used in automotive applications such as battery protection, brown-out levels, and power sequencing in harsh environments. It can also be used in fixed or portable electronic equipment such as data acquisition systems, battery-powered devices, and other equipment that require accurate power-supply voltage and current information.

Features and Specifications

The LTC2911HDDB-2 supervisor has a few main features. First, it has an operating temperature range of -40°C to 125°C, allowing for use in a wide range of environments. It is also sampling with very few pulse width (tRdly) delay.This supervisor has a wide input voltage range, from 6 V to 40 V, and an accurate supply current monitor with an accuracy of 0.1%. It is also equipped with a programmable 8-bit register that can be used to store user-defined settings and data.The LTC2911HDDB-2 supervisor also has a few other features that make it an ideal power solution. It features low-power consumption, and it has an integrated low-voltage clock circuit so that it can be used in low-power applications.

Working Principle

The LTC2911HDDB-2 supervisor works by monitoring the input power supply and comparing it to the preset set of reference voltages. The supervisor then provides a programmable reset for the system if the monitored values exceed the reference voltages.The supervisor also checks the power supply\'s current level and can alert the user if it exceeds a certain threshold. The LTC2911HDDB-2 can detect various types of faults including low-voltage, short-circuits, overvoltage, and other power-supply conditions.Additionally, the supervisor has an internal battery monitor that provides an accurate measurement of the remaining capacity of Li-ion and Li-polymer batteries as well as other types of batteries. The supervisor also has a variety of safety features, such as a fail-safe circuitry and an independent +Vaux supply voltage that are important in automotive applications.

Conclusion

The LTC2911HDDB-2 is a versatile and reliable power supervisor that can be used in both low-power and harsh environments. It provides an accurate, cost-effective, and highly integrated solution for power supplies and battery monitors. With its wide variety of features and capabilities, it is an ideal choice for use in applications such as data acquisition, automotive, and portable electronic equipment.

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