MCP1541-I/TO

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Power Management Integrated Circuits (PMICs) are a type of integrated circuits (PMICs) that deal with the management of power and voltage to keep an electronic device running. Voltage references are a key part of PMICs, and one example is the MCP1541-I/TO integrated circuit. This device is specifically designed to be a highly accurate voltage reference, allowing stable voltage references to be used for various applications.

The MCP1541-I/TO is designed for use in battery-backed applications, such as power supplies, industrial automation, data loggers, etc. It offers a model-based accuracy of 0.1% over a temperature range of −40°C to +85°C. This high accuracy is enabled by utilizing a high-precision voltage regulator, an external precision resistor ladder reference, and factory calibrated trim values.

The MCP1541-I/TO\'s key features include: high accuracy (<0.1%), low power consumption (typically 5mW), low supply current (1-2mA), small 3mm x 3mm package size with 8-pin body, and a -40°C to +85°C extended temperature range. It also features a wide-input range (−0.3V to +5.5V), a low-noise output ripple (<20mV), and an output voltage range of 0.25V to 4.5V. It is fully compatible with 3.3V and 5V CMOS standard logic, as well as low voltage (<3.3V) I/O logic.

The MCP1541-I/TO voltage reference uses a three-terminal regulator followed by an error amplifier and a voltage divider composed of precision resistors for the reference voltage output. This three-terminal configuration ensures low-noise and high-output accuracy. Additionally, this device features a wide load range and low quiescent current, allowing it to be used in multiple applications.

The device utilizes a 500mV reference voltage at the reference pin and provides a voltage output at the output pin. This output voltage is adjustable using a voltage divider with a precision 10kΩ resistor and a trim pot or using an external resistor at the REFCAP pin. This allows the output voltage to be adjusted to the specific needs of the application.

Moreover, the MCP1541-I/TO offers a power-on reset circuit, a thermal overload protection circuit, a power supply rejection ratio of 60dB and a fast transient response time. The power-on reset is designed to pull the output voltage to a safe, low value when the device is first powered on. The thermal overload protection ensures the device will shut down in the event of an over-voltage or excessive current. The power supply rejection ratio of 60 dB indicates the device can handle high levels of noise from power supply fluctuations. Finally, the fast response time of the device allows for quick settling of the output voltage in response to changes in the load.

Overall, the MCP1541-I/TO voltage reference is excellent for those who demand accuracy and stability under all conditions. Its many features make it suitable for use in a wide range of power management and battery-backed applications. Its features, such as high accuracy and low quiescent current end all combine to make it an ideal device for such applications.

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