Abstract: This article demonstrates how to achieve current limit for the MAX1692 PWM step-down regulator by using a MAX4173H current-sense amplifier. Maxim > App Notes > AMPLIFIER AND COMPARATOR CIRCUITS POWER-SUPPLY CIRCUITS Keywords: current limit, current sense amplifier, buck regulator, pwm, step-down regulator Dec 01, 2000 APPLICATION NOTE 478 Current-Limit Circuit for the Buck Regulator Abstract: This article demonstrates how to achieve current limit for the MAX1692 PWM step-down regulator by using a MAX4173H current-sense amplifier. Additional Information: q Quick View Data Sheet for the MAX1692 q Quick View Data Sheet for the MAX4173 q Samples and Literature Order Form q Technical Support: Power A current limit can be added to a step-down converter by using a MAX4173H current-sense amplifier to inject current into the feedback network. D1 sharpens the threshold of current ……