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RT9261 - VFM Step-up DC/DC Converter

General Description

The RT9261 Series are VFM Step-up DC/DC ICs with ultra low supply current by CMOS process and suitable for use with battery-powered instruments.

Key Features

  • Minimal Number of External Components ( Only an Inductor, a Diode, and a Capacitor) Ultra Low Input Current ( 5µA at Switch Off) ± 2% High Output Voltage Accuracy Low Ripple and Low Noise Low Start-up Voltage, 0.85V at 1mA 75% Efficiency with Low Cost Inductor +50 ppm/ °C Low Temperature-Drift SOT-89 and SOT-25 Small Packages.

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Datasheet Details

Part number RT9261
Manufacturer Richtek
File Size 274.31 KB
Description VFM Step-up DC/DC Converter
Datasheet download datasheet RT9261 Datasheet

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Other Datasheets by Richtek

Part Number Description
RT9261A VFM Step-up DC/DC Converter
RT9261B VFM Step-up DC/DC Converter
RT9262 Step-up DC/DC Converter
RT9262A Step-up DC/DC Converter
RT9263 HIGH EFFICIENCY LOW SUPPLY CURRENT STEP UP DC/DC CONVERTER

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Preliminary RT9261/A VFM Step-up DC/DC Converter General Description The RT9261 Series are VFM Step-up DC/DC ICs 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 RT9261A IC provides with a drive pin (EXT) for an external transistor, so that a power transistor can be externally applied. Therefore, the RT9261A IC is recommended for applications where large currents are required.