BU4240G-TR Integrated Circuits (ICs)

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Power management integrated circuits (PMICs) are increasingly used in various types of electronic applications including laptops, tablets, smartphones, medical equipment and automotive systems. PMICs are typically used to manage system power consumption, eliminate any unnecessary power consumption and protect sensitive devices in a system. One PMIC in particular, the BU4240G-TR, offers a wide range of features that make it a popular choice for system power management.

The BU4240G-TR is a low-power voltage supervisor from Bourns. It is designed to monitor the voltage level in a system, to detect any undesired fluctuations of the voltage level and to issue an alarm signal if required. This is accomplished by having two power sensors: a voltage low sensor that produces an output when the system voltage drops below a certain level and a voltage high sensor that produces an output when the system voltage rises above a certain level. The outputs of these sensors can be configured to generate a reset signal, a power-on signal or a system interrupt. The BU4240G-TR is widely used in applications such as automotive, industrial and consumer applications, as it can be used in a variety of systems due to its extremely low power consumption and high accuracy over a wide operating temperature range.

The BU4240G-TR is designed to operate from a very wide input voltage range, from 1.6V to 6V. This makes the BU4240G-TR ideal for use in systems with variable input voltages, such as those found in automotive applications. The BU4240G-TR also features an active voltage low threshold (AVLO) of 1.6 volts (V), with a high maximum input voltage of 6V. Additionally, the BU4240G-TR features an adjustable reset output timer (ROT) of 30ms, a system reset monitor (SRM) reset delay of 1ms, and a reset hold-time of 40ms. It also offers integrated hysteresis, which prevents repeated reset cycles. The BU4240G-TR’s robust design makes it ideal for harsh environment applications, as it can operate in temperatures ranging from -40 to +125 ºC.

The BU4240G-TR’s internal circuitry consists of two power sensors and a number of protection and current generation circuits. The voltage low sensor monitors the system voltage and produces a reset output when the system voltage drops below the preset VLO threshold. The voltage high sensor is used to monitor the voltage level in a system to detect any undesired rise in voltage. When the voltage rises above a preset VHI threshold, the voltage high sensor produces an output signal. This signal can be used to generate a system interrupt, a power-on signal or a reset signal. Along with these two sensors, the BU4240G-TR also features current detectors, reset hold-time circuits, reset outputs and voltage detection outputs.

The BU4240G-TR provides a level of protection for systems and prevents safety risks due to voltage fluctuations. The BU4240G-TR’s low power consumption and wide input voltage range make it well-suited for a variety of applications, while its integrated protection and current regulation capabilities make it ideal for applications such as automotive systems, industrial equipment, and consumer electronics.

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