RT9261

VFM Step-up DC/DC Converter, SOT, 5μA, 8V, 250mA, RT9261

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PartNumber:: RT9261

Brand:: Richtek Technology Corporation - richtek | Pack: SOT | D/C: 11+

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Delivery: 10-15 Business Days (ships out within 3 Business days)

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Products Upload time: 2012-06-07

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Part Number:RT9261
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Product Summary

The RT9261 is a kind of VFM Step-up DC/DC IC with ultra low supply current by CMOS process and suitable for use with battery-powered instruments. The RT9261 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 of this RT9261 IC with only three external components. The RT9261 is ideal for: (1)Power source for battery-powered equipment; (2)Power source for cameras, camcorders, VCRs, PDAs, pagers, electronic data banks, and hand-held communication equipment; (3)Power source for applications, which require higher voltage than that of batteries used in the appliances.

Parametrics

RT9261 absolute maximum ratings: (1)Output Voltage: 8V; (2)LX Pin Voltage: 8V; (3)EXT Pin Voltage: -0.3 to VOUT +0.3V; (4)EN Pin Voltage: -0.3 to VOUT +0.3V; (5)LX Pin Output Current: 250mA; (6)EXT Pin Current: ±50mA; (7)Power Dissipation, PD @ TA = 25℃: SOT-89: 0.5W; SOT-23-5: 0.25W; (8)Package Thermal Resistance: SOT-89, θJC: 100℃/W; SOT-89, θJA: 300℃/W; SOT-23-5, θJA: 250℃/W; (9)Operating Temperature Range: -20 to +85℃; (10)Storage Temperature Range: 165℃; (11)Lead Temperature (Soldering, 10 sec.): 260℃.

Features

RT9261 features: (1)Minimal Number of External Components ( Only an Inductor, a Diode, and a Capacitor); (2)Ultra Low Input Current ( 5μA at Switch Off); (3)±2% High Output Voltage Accuracy; (4)Low Ripple and Low Noise; (5)Low Start-up Voltage, 0.85V at 1mA; (6)75% Efficiency with Low Cost Inductor; (7)+50 ppm/ ℃ Low Temperature-Drift; (8)SOT-89 and SOT-23-5 Small Packages; (9)RoHS Compliant and 100% Lead (Pb)-Free.