MAX6350CSA+T

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This article describes the application field and working principle of the MAX6350CSA+T, which is classified as a PMIC - Voltage Reference. As a cost-effective micropower voltage reference, MAX6350CSA+T can be used for precision voltage setting and microprocessor reset functions with long battery life.

The MAX6350CSA+T is a voltage reference available in ±2%, ±5%, and ±10% output voltage tolerance grades. It provides an accurately regulated 2.5V output, which includes 7-bit resolution for ±4.096V of range. It has a low quiscent current of 5µA, which extends the battery life in battery powered circuit applications. The wide operating temperature range of -40°C to +125°C ensures the device\'s good performance as well.

In addition, the MAX6350CSA+T provides input voltage range of 3V to 24V, and feature excellent accuracy over temperature. The No-load regulation of this device is also very excellent. It enables ±0.001%/V input voltage changes and temperature stabilities of ±2mV/°C (for operating temperature of 0°C to 70°C and load current of 1mA).

MAX6350CSA+T also features on-chip precision voltage trimming with the programming capability of +15mV or -13mV from the nominal 2.5V output. The output voltage can be adjusted to ±0.5% from nominal. Moreover, the device offers EMI filtering and high ripple rejection. This makes it suitable for use in high magnetic fields, low-noise circuits, and low-radiation applications.

The MAX6350CSA+T provides overvoltage and undervoltage protection. It has an adjustable overvoltage (OV) threshold and a hysteresis of 1V. The device also has an adjustable undervoltage (UV) threshold and hysteresis of 10mV. This helps protect circuits against voltage transients and surges. In addition, the device offers thermal shutdown protection to prevent damage from overheating.

The MAX6350CSA+T supplies a reset signal to the microprocessor so that it can enter a reset state when the voltage drops below a certain level. This reset circuitry provides an active low-level reset signal if the circuit\'s supply voltage drops below the preset threshold. The system can be resumed to normal operation when the voltage returns to normal. The reset signal will be held active until the voltage reaches a preset upper threshold.

In conclusion, the MAX6350CSA+T is a self-powered, precision voltage reference device with a low quiescent current, high input voltage range and excellent accuracy over temperature. It provides overvoltage and undervoltage protection, on-chip precision trimming capability and reset signal to microprocessors. It is ideal for use in precision voltage setting and microprocessor reset functions in battery powered applications with long battery life.

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