MAX6307UK44D4-T

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Introduction

A Power Management Integrated Circuit (PMIC) is an integrated circuit (IC) which controls the power supply of systems or subsystems. It is used in many applications that require efficient, reliable and cost-effective management of power. The MAX6307UK44D4-T is a PMIC that provides system supervisory and supply monitor functions for automotive and portable applications. It is a feature-rich, low-power and cost-effective supervisor that is designed to protect systems from erroneous or poor power rail conditions.

Application Field

The MAX6307UK44D4-T is designed for automotive applications, providing both system supervisor and supply monitor functions. It is targeted primarily towards powertrain Electronic Control Units (ECUs) that are used to control engine and transmission systems, such as Automatic Transmission ECUs (ATECUs). It also offers additional features such as ultra-low power mode and an internal voltage reference that can be used in automotive-grade supply and battery monitoring systems, along with in-circuit monitoring and active reset. This makes it suitable for a variety of automotive power and system designs, including high-efficiency power stage designs, low-cost board designs and emulated supply architectures.

The MAX6307UK44D4-T is also well suited for use in a variety of other applications, including portable and consumer electronics, process control systems and medical devices. It is designed to meet or exceed the stringent safety and reliability requirements of these applications, including input/output voltages from 1.8 V to 4.5 V and power requirements from 0.5 mA to 4 mA.

Working Principle

The MAX6307UK44D4-T is designed for use in a variety of power-on reset (POR) and system reset conditions. In order to protect the system, the device utilizes a variety of internal and external monitoring features. These features include undervoltage (UV) and overvoltage (OV) monitoring, power-on reset (POR), system reset (SRESET), supply sequencing delay and temperature compensation.

The device monitors the input voltage and compares it to a programmable voltage threshold. When the voltage falls below the programmed threshold, the device will assert a reset input and force the system into a known good state. The reset input can then be used by the system to initialize the system, reload suitable settings and reset all system peripherals. The device also includes an integrated oscillator and supplies a short pulse to the reset input each time a reset occurs.

In addition, the MAX6307UK44D4-T offers a variety of control features, including supply sequencing delay and temperature compensation. The supply sequencing delay allows the user to program a delay between the activation of the primary system power supply and the other secondary supply voltages. This helps to ensure that the system is properly initialized before the secondary supplies are enabled. Moreover, the device supports systems with temperature-sensitive operation, allowing the user to program a temperature threshold, which will cause the reset signal to be asserted if the system temperature exceeds the programmed threshold.

Conclusion

The MAX6307UK44D4-T is a low-power and cost-effective PMIC designed for automotive and portable applications. It offers a variety of features and control functions for protecting systems from erroneous or poor power conditions. These features include undervoltage/overvoltage monitoring, supply sequencing delay, temperature compensation and many others. It is designed to meet the stringent safety and reliability requirements of a variety of portable and automotive applications.

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