BD37A41FVM-TR Integrated Circuits (ICs)

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The BD37A41FVM-TR has become a popular integrated circuit (IC) for consumer electronics and circuit boards. The device is a low-noise, low-power, and high-efficiency CMOS voltage supervisor. It provides a wide range of power supply monitoring functions, allowing designers to improve system reliability. These features make it a great choice for powering embedded applications and meeting demanding system requirements.

Overview

The BD37A41FVM-TR is part of the Diodes Incorporated Supervisory IC family. It is a high-performance, 4.0 V to 5.5 V, single chip voltage supervisor with built-in reset generators, overvoltage detection, and power sequencing functions. It is designed to monitor power supplies in portable, battery-based, and automotive systems. The device features open-drain reset generators and an active-low manual reset input to allow precise control of reset pulsing and system power-up timing.

Features

• Monitors 4.0 V to 5.5 V supplies
• Provides a wide range of power supply monitoring functions
• Open-drain reset generators
• 2 Reset Pulse Generators
• Power monitor window comparators
• Threshold voltage adjust for 2 power monitor windows
• Low input current of typically 600nA
• Sleep mode for standby power saving
• Independent overvoltage detection (OVD)
• Low-noise operation and high-efficiency CMOS logic
• 2 Reset Pulse Generators with selectable pre-delay
• Integrated watchdog timer

Applications

• Mobile phones
• Notebooks and tablets
• Portable device chargers
• Battery supervision and control
• Portable consumer electronics
• Power supplies
• Consumer products
• Automotive applications

Working Principle

The BD37A41FVM-TR works by monitoring the main power or battery supply. It can detect power supply issues like over-voltage, under-voltage, or low battery notification. Once the power supply voltage falls below or goes above the voltage thresholds, the reset pulse generators generate the reset signals. This helps to protect the system from any further damage. It also includes input for controlling the sleep mode for standby power saving.

The BD37A41FVM-TR has two reset pulse generators with an adjustable pre-delay period. The manual reset input can be used to reset the device if the voltage supply is outside its operating range. The watchdog timer can be enabled if the voltage on any of the power supply pins exceeds the power monitor window. The timer can be used as an additional failsafe measure to reset the system should the power supply voltage not return back to normal within the designated time period.

Conclusion

The BD37A41FVM-TR is a powerful and versatile PMIC (power management IC) that is designed specifically for mobile and battery-based applications. It is a low-power and efficient solution for monitoring power supplies in portable and automotive systems. It features high-performance reset generators and overvoltage detection. It also features a sleep mode and integrated watchdog timer. With its comprehensive features and low-power consumption, it is a great choice for embedded application designers.

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