MAX848ESE+

MAX848ESE+ is a special purpose voltage regulator from Maxim Integrated Products. It is a micropower low dropout (LDO) regulator with shutdown function. It provides output voltage adjustment from 0.9V to 6V with a dropout voltage of 300 mV, making it suitable for applications with limited power supply.

The MAX848ESE+ employs an internal charge pump to increase the output voltage (VOUT) and low dropout voltage (VDROP) when operating from a supply voltage (VIN) as low as 1.8V or lower. It delivers up to 30mA of load current and provides thermal shutdown protection.

The MAX848ESE+ operates in three different modes, depending on the relationship between the input voltage (VIN) and the output voltage (VOUT). In the first mode, VIN is between 0.7V and VOUT + 300mV. In the second mode, VIN is between VOUT + 300mV and 1.5V. In the third mode, VIN is above 1.5V.

In the first mode, the output voltage (VOUT) is regulated by charging and discharging the internal charge--pump capacitor. The internal charge pump increases the output voltage when the input voltage (VIN) is higher than VOUT + 300 mV, and reduces the output voltage when the input voltage is lower than VOUT + 300 mV.

In the second mode, the output voltage (VOUT) is regulated by the combination of the linear regulator and the internal charge pump. The linear regulator increases the output voltage when the input voltage is higher than VOUT + 300 mV and reduces the output voltage when the input voltage is lower than VOUT + 300 mV. The internal charge pump increases the output voltage when the input voltage is lower than the output voltage.

In the third mode, the output voltage (VOUT) is regulated by operating in linear mode only. This mode improves both efficiency and noise suppression.

The MAX848ESE+ is designed to provide high accuracy output voltage regulation, low noise and a low dropout voltage. It is suitable for use in a variety of applications, including battery-powered systems, automotive electronics, computers and peripherals, medical equipment, and mobile communications.

The MAX848ESE+ is available in a tiny SOT-23 package, which allows designers to reduce the size and cost of the end product. It is built to meet the demands of today’s power- and size-sensitive electronic devices.

In summary, the MAX848ESE+ is a special purpose voltage regulator from Maxim Integrated Products. It offers low dropout voltage, thermal shutdown protection, low noise, and high accuracy output voltage regulation, making it suitable for a variety of applications including automotive electronics, computers and peripherals, medical equipment, mobile communications, and battery-powered systems.