LTC2918HMS-B1#TRPBF

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Multi-Voltage Supervisor
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	150 ms Minimum
Voltage - Threshold:	27 Selectable Threshold Combinations
Operating Temperature:	-40°C ~ 125°C (TA)
Mounting Type:	Surface Mount
Package / Case:	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Supplier Device Package:	10-MSOP
Base Part Number:	LTC2918

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Introduction to LTC2918HMS-B1#TRPBF

The LTC2918HMS-B1#TRPBF is a PMIC (Power Management IC) supervisor from Linear Technology. It is an integrated, low-voltage supervisory, voltage monitor IC and voltage monitors IC with nanosecond response time, microvolt accuracy and temperature-stable I/O. This Product is featured with an user-defined power-on reset (POR) delay timer, reset status indication and reset pulse stretcher to facilitate reset distribution in complex system architectures.

Application Field of LTC2918HMS-B1#TRPBF

The LTC2918HMS-B1#TRPBF is targeted at applications in the optical, industrial, communications and medical markets. This device is optimal for use with Li-Ion and NiCd/NiMH battery charging applications, providing protection against overcharging and over-temperature conditions. Its low power consumption and fast POR response time make the LTC2918HMS-B1#TRPBF an ideal choice for portable and distributed systems designs. It offers high-precision voltage monitoring and detection of user-defined under-voltage and over-voltage thresholds.

Working Principle of LTC2918HMS-B1#TRPBF

The LTC2918HMS-B1#TRPBF functions as an power-on Reset (PR) circuit. It monitors the supply voltage at the VIN pin and drives a reset signal when the voltage falls below the user-defined power-on threshold voltage or rises above its user-defined power-on threshold voltage . This voltage detection can be delayed with a programmable delay timer, allowing sufficient power-on time to prevent false resets.The LTC2918HMS-B1#TRPBF is a low power consumption device that can be used to monitor the supply voltage to ensure that the system is powered on correctly. The device monitors the voltage continuously and provides an output pin when the voltage falls below or rises above a user-defined voltage threshold. This output can be used to drive other components in the system, reset the system, or for other purposes. The device also features a reset pulse stretcher which delays the output pulse for a user-specified period of time. This feature is useful for ensuring a reset signal is long enough to be recognized by the system. The LTC2918HMS-B1#TRPBF also has a power-save mode which reduces current consumption when the circuit is idle. This helps to extend the battery life of portable applications.Finally, the LTC2918HMS-B1#TRPBF has an internal temperature sensor which is used to protect the supervisor IC from damage due to hot spots. The device has a thermal shutdown feature which disables the circuit when the temperature gets too high.

Conclusion

The LTC2918HMS-B1#TRPBF is an ideal choice for use in applications with Li-Ion and NiCd/NiMH battery charging. Its fast response time, nanosecond accuracy and temperature-stable I/O makes it suitable for use in both portable and distributed systems designs. Its low power consumption, user-defined delays, reset stretches, and thermal shutdown features make it a reliable monitoring and protection circuit.

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