X5649S14I-2.7A

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The X5649S14I-2.7A is classified as a PMIC (Power Management Integrated Circuit) supervisor, whose primary application field involves monitoring voltage-supply rails. Voltage-supply rail monitoring is integral in preventing potentially catastrophic overload of power supply networks. This family of PMIC supervisor differs from other similar products in that it offers a more comprehensive range of features, options, and circuitry. This guide aims to provide an in-depth overview of the features, operation and applications of the X5649S14I-2.7A.

What is a PMIC Supervi sor ?

A Power Management Integrated Circuit ( PMIC) Supervisor monitors the voltage-supply rails in order to lockout excessive current or voltage. Traditionally, these devices have been used to protect circuits (and users) from excessive current in the case of power surges, or voltage drops in the case of a failing power supply. A PMIC supervisor also often serves to monitor and detect any abnormally high temperature that can indicate a fault elsewhere on the board, or in the device itself.

Description of the X5649S14I-2.7A

The X5649S14I-2.7A is a family of PMIC supervisors designed for monitoring and protecting medium- and large-scale voltage-supply rails. It provides a wide range of features, including an adjustable response time from 35 to 150 ms, an EMI viewable and adjustable threshold limit, and a low input sensitivity of 1V. The X5649S14I-2.7A can be used in systems requiring a wide range of voltage, from a nominal 5V up to 16V, for both non-linear and linear voltage-regulator applications.It has an external control line for toggling the device, two reset pins (2/1 reset inputs), and a dedicated reset output output that detects a power-on reset condition. The X5649S14I-2.7A is offered in a surface mountable SOIC-14 package and has a 1.713 x 3.35 mm2 (0.67 x 0.30 inch2) body, making it an ideal choice for space-constrained applications.

Features & Benefits of the X5649S14I-2.7A

• Wide supply voltage range (nominal 5V up to 16V).
• Adjustable response time: 35-150 ms.
• EMI viewable and adjustable threshold limit.
• Low input sensitivity: 1V.
• External control line for toggling the device.
• Two reset pins (2/1 reset inputs).
• Dedicated reset output (detected power-on reset).
• Compact surface mount package.

Working Principle of the X5649S14I-2.7A

The operating principle of the X5649S14I-2.7A is relatively simple. The device will begin monitoring voltage levels and current loads when power is applied to the circuit by closing the input MOSFET. The device\'s digital logic being set to work comparing incoming voltage to the adjustable thresholds set either in hardware or via software/configuration pins. In the event of an overload or voltage dip/spike the device will send “latch” command to the output transistor causing it to open & disconnect power. During normal conditions the output device remains closed and power flows. The device also has an internal pull down resistor connected to ground, so when the device is in reset or power down condition the power is disconnected.

Application Areas of the X5649S14I-2.7A

The X5649S14I-2.7A PMIC supervisor is best suited to applications where a wide range of voltage or current levels may be present, including:

• Telecommunications
• Data processing
• Industrial control systems
• Portable devices and power sources
• Battery-powered systems
• Computer system motherboards
• Railway and vehicle systems

The X5649S14I-2.7A is also useful in applications where a wide range of voltage, or an adjustable response time, is desired or when excess current or voltage is expected, such as in lightning-induced surges or transient voltage drops.

Conclusion

The X5649S14I-2.7A is a versatile PMIC supervisor designed for monitoring and protecting medium- and large-scale voltage-supply rails. It features a wide range of features, including an adjustable response time from 35 to 150 ms, an EMI viewable and adjustable threshold limit, and a low input sensitivity of 1V. The X5649S14I-2.7A can be used in systems requiring a wide range of voltage, from a nominal 5V up to 16V, and is suitable for applications in industries ranging from telecommunications to railway and vehicle systems.

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