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RT9261 - VFM Step-up DC/DC Converter

Datasheet Summary

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.

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 preview – RT9261

Datasheet Details

Part number RT9261
Manufacturer Richtek
File Size 274.31 KB
Description VFM Step-up DC/DC Converter
Datasheet download datasheet RT9261 Datasheet
Additional preview pages of the RT9261 datasheet.

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Other Datasheets by RICHTEK
  • RT9261A - VFM Step-up DC/DC Converter
  • RT9261B - VFM Step-up DC/DC Converter
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Full PDF Text Transcription

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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.
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