MITSUMI
Measuring Circuit
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CMOS Switching Regulator (PWM controlled) MM3005~MM3010
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3
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Note 1: Coil: L=100µH (Mitsumi C5-K3L) transistor: SANYO 2SD1628
Condenser: C=33µF (tantal condenser) Base resistor (Rb) : 1.0kΩ
Shot key barrier diode: ROHM RB491D Base resistor (Cb) : 2200pF
Note 2: The cause of oscillation is due to set wiring and capacitance changes in capacitor caused by
temperatures changes, so please take extra care in placing the wires.