MAX1853EXT-T

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DC–DC converters ensure the generation of a certain output voltage from a battery or other power sources. These power productivity solutions can provide precise voltage regulation, battery monitoring, load regulation, and even over-voltage protection. The MAX1853EXT-T is a highly efficient, low noise, and low cost DC-DC buck converter integrated with a highly versatile microcontroller.

Introduction to MAX1853EXT-T

The MAX1853EXT-T is a low voltage DC–DC converter from Maxim Integrated. It is an ideal pert choice for powering mobile device applications when the main power source is a single Li-Ion or Li-Polymer battery. Its low-noise integrated buck regulators feature high efficiency and low quiescent current to extend battery life. Low output voltage ripple and fast transient response enable the MAX1853EXT-T to deliver clean power to FPGAs, DSPs, and DUAL core CPUs without over-stressing them. Furthermore, the MAX1853EXT-T also offers overvoltage protection.

Applications

The MAX1853EXT-T can be used in a variety of applications ranging from portable medical devices to Bluetooth gadgets. These include medical equipments such as hand-held ECG monitors or pedometers and mobile phones, tablets, PDAs, and other applications requiring efficient power conversion with low noise. Additionally, the device can also be used in wireless handsets, data cards, and communications equipment.

Working Principle

The MAX1853EXT-T operates by converting a constant voltage input, such as a battery, into a regulated output voltage. The device incorporates a switching power supply consisting of an inductor and capacitors, which convert the input voltage into a pulse width modulated (PWM) voltage. The output voltage is monitored and the device adjusts the duty cycle of the PWM signal accordingly. The duty cycle determines the average output voltage of the converter. The device also integrates a MOSFET switch that serves as an electronic switch to turn the PWM output on and off.

In order for the device to remain efficient, the output voltage regulator needs to be designed such that it does not allow the output voltage to ripple significantly. This is done by monitoring the output voltage, and if the output voltage starts to deviate by too much, the duty cycle is adjusted accordingly. This ensures that the output voltage remains constant and steady.

Conclusion

The MAX1853EXT-T is a low voltage DC–DC converter. The device provides lower output voltage ripple and faster transient response which efficient and low-noise power conversion. Additionally, the device integrates a highly versatile microcontroller for optimized performance. The MAX1853EXT-T can be used for a variety mobile applications requiring efficient and low-noise power conversion.

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