LM3704YCMMX-232

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Discontinued at Digi-Key
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active Low
Reset Timeout:	140 ms Minimum
Voltage - Threshold:	2.32V
Operating Temperature:	-40°C ~ 85°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Supplier Device Package:	10-VSSOP
Base Part Number:	LM3704

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Introduction

The LM3704YCMMX-232 is a low power, high performance multi-supply supervisor IC designed to protect microcontroller-based systems by monitoring critical operating conditions such as input voltage, temperature and battery charge level. This Supervisor family provides comprehensive monitoring of power supply and system conditions over wide operating temperature ranges. At the core of the LM3704YCMMX-232 is a configurable, 4-channel voltage supervisor with both positive and negative voltage comparators, an over-temperature monitoring circuit and a configurable power-on reset voltage generator.

Features

The LM3704YCMMX-232 includes a wide range of features for enhanced circuit protection and system reliability. It includes internal positive and negative voltage comparators, a configurable over-temperature monitoring circuit and a configurable power-on reset. Data from up to four voltages can be monitored and threshold levels set to suit the application. The temperature monitoring circuits are configurable to detection lowest, highest, or full range of temperature levels. The power-on reset function can be configured to reset the connected microcontroller at a specific voltage level.

Application Field

The LM3704YCMMX-232 Supervisor is ideal for use in applications requiring a low-power, high-performance multi-supply supervisor IC, such as safety-critical embedded systems, automotive, medical and other temperature-sensitive applications. It provides an essential and reliable means of monitoring critical system parameters, motors, batteries and other conditions and is designed to ensure proper operation and protection against system faults.

Working Principle

The LM3704YCMMX-232 Supervisor IC utilizes a 4-channel voltage monitoring and power-on reset circuit to detect and protect against over voltage, under voltage, over temperature, and power-on reset conditions. It provides four individually configurable voltage monitoring channels that can be used to detect either a positive or a negative voltage level. The Internal comparators are used to compare a programmable voltage threshold against an external input voltage, and an over-temperature monitoring circuit is used to detect the lowest and highest temperature levels. The power-on reset circuit is used to reset the connected microcontroller at a specific voltage level, ensuring the system is operating within specified parameters.

Conclusion

The LM3704YCMMX-232 Supervisor IC offers robust and reliable protection for microcontroller-based systems requiring reliable power management and monitoring of system conditions, such as motors, batteries and temperature. It features internal positive and negative voltage comparators, configurable over-temperature monitoring and power-on reset, making it an ideal choice for safety-critical and automotive applications.

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