The RT9261B Series are VFM Step-up DC/DC converterICs with ultra low supply current by CMOS process andsuitable for use with battery-powered instruments.The RT9261B IC consists of an oscillator, a VFM controlcircuit, a driver transistor (LX switch), a reference voltageunit, an error amplifier, resistors for voltage detection, anda LX switch protection circuit. A low ripple and high efficiencystep-up DC/DC converter can be constructed with theRT9261B IC and only three external components.The EN pin enables the circuit to set the standby supplycurrent at a maximum of 0.5uA.
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