X5045M8I-2.7A

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The X5045M8I-2.7A is a member of the family of PMIC - Supervisors, designed to provide a supervisor solution for reliable microprocessor system reset. It can monitor voltage levels, and provide an active low reset when system voltages drift beyond their designated levels. This supervisor is available in an 8-pin small-outline, plastic package with a thermally enhanced SIP package.

Application Field of X5045M8I-2.7A

The X5045M8I-2.7A is a low power CMOS supervisor that monitors microprocessor voltage levels and provides an active low reset during system operation. Its small size, low power operation and adjustable reset threshold make it an ideal choice for low power and small form factor applications. It can be used in a variety of designs including industrial, telecom, automotive and portable applications. Additionally, the X5045M8I-2.7A is well suited for applications where a backup battery must be used for real-time clock or controller operations.

The X5045M8I-2.7A supervisor is designed to monitor an input voltage (VDD) and provide a reset output (RESET) when the input voltage rises above or falls below an adjustable voltage level. The VDD is available through an external resistor divider, which is connected to the VDD supply. The adjustable voltage level is set with the reset threshold voltage (VTH) pin. The reset pulse width is adjustable with the RESET width pin.

Working Principle of X5045M8I-2.7A

The X5045M8I-2.7A operates as a Voltage Detector/Reset IC. It monitors an input voltage (VDD) supplied to the VDD pin. If the voltage rises above or falls below a predetermined level, the X5045M8I-2.7A will pull the RESET pin low, initiating the reset operation. The reset threshold voltage is set with the VTH pin and is normally controlled by an external resistor divider network.

The X5045M8I-2.7A contains a hysteresis feature, which delays reset for about 1/4 VTH above the reset threshold voltage. This feature prevents excessive reset cycling when VDD is near the reset threshold voltage. The reset width is selectable from 1ms to 500ms via the RESET width pin. After the reset width expires, the X5045M8I-2.7A will transition the RESET pin back to a high state and monitoring of the VDD will resume.

The X5045M8I-2.7A operates from a single voltage supply ranging from +1.8V to +5.5V. It features a guaranteed VTH accuracy of ±3% over temperature and operating voltage, and low power consumption (<2 µA). It is also designed to work in noisy power environments, as the X5045M8I-2.7A is equipped with an edge rate limiting feature that reduces false transitions.

In summary, the X5045M8I-2.7A is a low power Voltage Detector/Reset IC that provides an active low system reset when the input voltage rises above or falls below an adjustable voltage level. It is ideal for a variety of demanding applications, and is available in a 8-pin small-outline, plastic package with a thermally enhanced SIP package.

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