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RT9261B-28PX Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT9261B-28PX Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 8 page  RT9261B Preliminary 1 DS9261B-12 March 2007 www.richtek.com Pin Configurations VFM Step-Up DC/DC Converter Ordering Information General Description 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 0.5 μA. Features Minimal Number of External Components (Only an Inductor, a Diode, and a Capacitor) Ultra Low Input Current (6.5 μμμμμA 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 Applications Power source for battery-powered equipment Power source for cameras, camcorders, VCRs, PDAs, pagers, electronic data banks, and hand-held communication equipment Power source for appliances, which require higher voltage than that of batteries used in the appliances (TOP VIEW) Marking Information For marking information, contact our sales representative directly or through a RichTek distributor located in your area, otherwise visit our website for detail. GND VOUT (TAB) LX 12 3 SOT-89 SOT-23-5 Note : RichTek Pb-free and Green products are : RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. Suitable for use in SnPb or Pb-free soldering processes. 100% matte tin (Sn) plating. EN VOUT NC GND LX 2 3 5 4 1 RT9261B- Package Type B : SOT-23-5 X : SOT-89 Operating Temperature Range P : Pb Free with Commercial Standard G : Green (Halogen Free with Commer- cial Standard) Output Voltage 15 : 1.5V 16 : 1.6V : 49 : 4.9V 50 : 5.0V |
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