Published:2009/7/23 22:28:00 Author:Jessie | From:SeekIC
Figures 4-2A and 4-2B show a basic step-up voltage regulator, and waveforms, respectively. Component values are tailored to circuit requirements, as follows:
where: IA feedback divider current (typically 50 to 100 μA)where: Vs =supply voltage, VD= diode forward voltage, IL= dc load current, VSW= sauration voltage of Q 1 (typical 0.5 V), If IMAX is more than 375 mA, Q1 must be replaced with a power transistor.
Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Power_Supply_Circuit/Basic_step_up_voltage_regulator.html
Print this Page | Comments | Reading(3)
Code: