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PMIC - Voltage Regulators - Special Purpose

MAX1513ETP+ Application Field and Working Principle

MAX1513ETP+ is a special purpose voltage regulator from Maxim Integrated, used for applications requiring the reduction of voltage from a DC source. The device contains two charge pumps, designed to step down a DC source by 3V, 5V, 6V, 9V and 12V. Its basic architecture consists of charge pumps, capacitors, voltage-regulation circuitry, and various switches.

The MAX1513ETP+ comes with several features, including low drop-out (LDO) regulation, output-discharge control, current-limiting, over-temperature protection, and an unload-detection pin that can be used to detect a no-load condition. This single integrated circuit device is capable of handling input voltages of up to 40V DC.

The application areas of the MAX1513ETP+ include automotive, industrial, and consumer electronics and computing devices. It can be used to power micropower analog circuits, where space is limited, and is suitable for automotive, battery-powered and space applications.

Working Principle of MAX1513ETP+

The MAX1513ETP+ is designed with IN and OUT pins connected to a capacitor and a series of switches. The switches are used to connect the capacitors to the IN and OUT pins, thus allowing the voltage to be reduced from the IN to the OUT pins.

The charge-pump circuit begins by charging the capacitors to the input voltage, VIN. This is done by connecting the capacitors to the input via the switches, allowing the charge to be passed on to the capacitors. The capacitors then store the charge, and the switches then disconnect the capacitors from the IN pin.

Since the capacitors are no longer connected to the IN, the voltage on the IN pin is reduced, thus creating a voltage drop. At the same time, the OUT pin is connected to the capacitors via the switches, and the charge stored in the capacitors is transferred to the OUT pin. This creates a reduced voltage at the OUT pin, which is 3V, 5V, 6V, 9V or 12V lower than VIN. The capacitors are then recharged and the process repeats.

The key advantages of this device are the low quiescent current, the low drop-out voltage, the fast response time, and the wide input and output voltage range. It also offers improved efficiency over similar products and is capable of providing a stable output voltage even when the input voltage varies over a wide range.

Conclusion

The MAX1513ETP+ is a special purpose voltage regulator from Maxim Integrated for applications requiring the reduction of voltage from a DC source. It offers features such as low drop-out (LDO) regulation, output discharge control, current-limiting, over-temperature protection, and an unload-detection pin that can be used to detect a no-load condition. The device is capable of operating with input voltages of up to 40V DC and can be used to power micropower analog circuits.

The MAX1513ETP+ is suitable for automotive, battery-powered and space applications and offers improved efficiency over other products. The efficient charge-pump circuit reduces the input voltage to the desired outputs of 3V, 5V, 6V, 9V and 12V, and is capable of providing a stable output voltage even when the input voltage varies widely.

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