BD49L25G-TL Integrated Circuits (ICs)

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The BD49L25G-TL is a supervisors or power management integrated circuits (PMIC) for managing power-on sequence, reset detection and system power supply monitoring. This PMICs is used to ensure the safe operation of electronic system and protect the device from unexpected power failure. It is well-suited for a wide range of applications such as industrial, automotive and consumer electronic products.

Overview of BD49L25G-TL

The BD49L25G-TL is a single-chip reset IC that combines a reset circuit (RST), power-on reset (POR) circuit, power-on sequence controller, system power supply voltage monitor (VPO), and internal voltage regulator (LVD). This PMIC helps increase system stability and reliability by monitoring the system power supply voltage, power-on reset, reset detection, and power-on sequencing activities. With an operating temperature range of −40° to +85°C, and low quiescent current of 5.5 μA, it can be used in a wide range of automotive, industrial, and consumer applications.

Application Fields of BD49L25G-TL

The BD49L25G-TL is an ideal PMIC for high-end automotive, industrial, and consumer applications. It is especially suited for automotive applications including ECUs, airbag systems, tire pressure monitoring systems, and safety systems due to its wide operating temperature range of −40° to +85°C, high accuracy, and low quiescent current.

In addition, the BD49L25G-TL can be used in a variety of other applications, such as ISO 26262-compliant systems, reset circuitry and related power-on sequence control in low power systems, microprocessor-based systems, noise-sensitive applications, and High Brightness LEDs (HBLED) drivers in automotive applications. Furthermore, the integrated power-on reset and sequence controller functions help improve system stability and reliability.

Working Principle of BD49L25G-TL

The BD49L25G-TL works by monitoring the system power supply voltage (VIN), power-on reset (POR) circuit and reset detection activities. It also controls the internal voltage regulator (LVD) to ensure that system components are powered on and off in a safe and proper sequence.

The BD49L25G-TL monitors the system voltage, and if the voltage drops below the minimum limit or rises above the maximum limit, it will immediately reset the entire system. The integrated POR circuit constantly monitors the supply voltage and will trigger a reset whenever it detects a voltage drop or fluctuation. The reset circuit can also be triggered by an external resistor or capacitor. The integrated LVD also helps monitor the power supply and will trigger a reset if the voltage drops below a set threshold.

Finally, the integrated power-on sequence controller helps sequence the power-up and power-down procedure of the system components, ensuring that components are powered on and off in a safe and reliable fashion. The reset circuit also provides an output signal that can be used to inform the system of the reset event.

Conclusion

The BD49L25G-TL is a PMIC for managing power-on sequence, reset detection, and system power supply monitoring. It is well-suited for a wide range of automotive, industrial, and consumer applications due to its wide operating temperature range, high accuracy, and low quiescent current. The BD49L25G-TL works by monitoring the system voltage and resetting the system whenever the voltage drops below the minimum limit or rises above the maximum limit. In addition, it can also be triggered externally, and the integrated power-on sequence controller helps sequence the power-up and power-down procedure of the system components.

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