Making a boost circuit with MAXl703

Probe current voltage pin 420*4450 head diameter 5.0 over current current and voltage pin

TP-IP4220CZ6 5V 0.35PF breakdown voltage 6V SOT

Shunuo varistor / ESD varistor / product complete / Sunlord first-class agent

Industrial Router Crystal 3.2*2.5mm 3225 26M (26.000MHZ) 12PF 10PPM 20PPM 30PPM

description:

MAX17031 to 3-cell, high-power (1.5A), low noise, step-up DC-DC converter

MAXl703 is a boost chip from Maxim. The chip has a built-in MOS tube that can provide an output current of 1.5A. Due to the pulse frequency adjustment mode and synchronous rectification (frequency is 200~400kHz), the efficiency can be as high as 95%; the input voltage range is from 0.7 to 5.5V. Therefore, it can be powered by 1~3 nickel-metal hydride or alkaline batteries, or it can be powered by 3.6V lithium-ion battery (the circuit designed by the author is lithium battery); the output can be set to a fixed 5V or 2.2~5.5V. The circuit output voltage of this paper is a fixed 5V.

Its application circuit is as follows:

Using the MAXl703's boost circuit schematic

Switch motor improvement circuit