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The RT9261B Series are VFM Step-up DC/DC converter ICs with ultra low supply current by CMOS process and suitable for use with battery-powered instruments.The RT9261B IC consists of an oscillator, a VFM control circuit, a driver transistor (LX switch), a reference voltage unit, an error amplifier, resistors for voltage detection, and a LX switch protection circuit. A low ripple and high efficiency step-up DC/DC converter can be constructed with the RT9261B IC and only three external components.The EN pin enables the circuit to set the standby supply current at a maximum of 0.5μA.
Minimal Number of External Components (Only an Inductor, a Diode, and a Capacitor)
Ultra Low Input Current (6.5μA at Switch Off)
Capable of Supplying 50mA Output Current with Internal Switch
± 2% Output Voltage Accuracy
Low Ripple and Low Noise
Low Start-up Voltage, 0.8V at 1mA
80% Efficiency with Low Cost Inductor
+50 ppm/°C Low Temperature-Drift
SOT-89 and SOT-23-5 Small Packages
RoHS Compliant and 100% Lead (Pb)-Free
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