MCP1726-1802E/MF

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MCP1726-1802E/MF

MCP1726-1802E/MF is a type of voltage regulator from the PMIC - Voltage Regulators - Linear product family from Microchip Technology Inc. This specific model is a low current, low dropout linear regulator, that is designed for the applications requiring low dropout voltage and low standby power consumption. This regulator series offers three different available output current options (200 mA, 400 mA and 500 mA), and features an open drain active-low enable pin with auto-discharge function which enable the regulator to reduce the power consumption.

Application Field

The MCP1726-1802E/MF is suitable for a wide range of applications from powering linear sensors to powering MCUs, DSPs and other devices that require lower power consumption and reliability. This device is optimal for a role in wearable technology, including smart band and eye-wear due to its small size, low quiescent current and low dropout voltage. Similarly, it is also well-suited for other IoT designs powered by coin cell batteries. Since this device is stable with ceramic capacitors, it can also be used in applications where space saving is critical, such as cell phones.

Working Principle

MCP1726-1802E/MF is a low dropout regulator that consists of a linear voltage regulator, voltage reference, and an output transistor in a single integrated circuit. The device employs an error amplifier, pass transistor and a voltage reference connected to the output voltage pin to regulate the output voltage. The output current of the MCP1726-1802E/MF is set by the pass element. Thus, the output of the device is maintained at a constant voltage level regardless of the varying load, temperature or input voltage.

The regulator works by measuring the output voltage level and controlling the gate voltage of the pass element in order to maintain the output voltage at the required level, as soon as any deviation from the specified output voltage level occurs. The gate maintains a negative gate-source voltage and causes the output current to increase, resulting in a decrease in output voltage. The device has thermal shutdown protection, that protects it from the effects of an abnormally high temperature caused by current overloads, etc.

Conclusion

The MCP1726-1802E/MF is a low current, low dropout voltage regulator designed for applications requiring low dropout voltage and low standby current consumption. It is suitable for powering various devices, ranging from linear sensors to MCUs, and its small size, low quiescent current and low dropout voltage make it ideally suited for IoT systems powered by coin cell batteries. The regulator works by measuring the output voltage level, controlling the gate voltage of the pass element and maintaining the output voltage at the required level. The device offers thermal shutdown protection that helps protect it from elevated temperatures. Overall, MCP1726-1802E/MF is a great choice for powering low power, low current devices.

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