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XC9274 - Step-Down DC/DC Converter

Description

MOS driver transistor and 49mΩ N-channel MOS switching transistor, designed to allow the use of ceramic capacitors.

Features

  • Voltage Range Output Voltage Range FB Voltage Output Current Oscillation Frequency Efficiency Control Methods Protection Functions Functions Output Capacitor Operating Ambient Temperature Package : 2.7V ~ 5.5V : XC9274 : 0.6V ~ 3.6V XC9275 : 0.8V ~ 3.6V : 0.6V ± 1.0% : 3.0A : 1.2MHz, 3.0MHz : 95% (VIN=5.0V, VOUT=3.3V, IOUT=1.0A) : HiSAT-COT® Control : 100% Duty Cycle : PWM Control (XC9274) : PWM/PFM auto switching Control (XC9275) : Thermal Shutdown : Current Limit (Pendent charact.

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Full PDF Text Transcription

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XC9274/XC9275 Series is Not Recommended for New Designs. XC9274/XC9275 Series ETR05056-005 HiSAT-COT® Control 3.0A Synchronous Step-Down DC/DC Converters ■GENERAL DESCRIPTION ☆Green Operation-compatible The XC9274/XC9275 series is a group of synchronous-rectification type DC/DC converters with a built-in 51mΩ P-channel MOS driver transistor and 49mΩ N-channel MOS switching transistor, designed to allow the use of ceramic capacitors. The small on-resistances of these two internal driver transistors enable a high efficiency, stable power supply with an output current up to 3.0A. A 0.6V reference voltage source is incorporated, and the output voltage can be set freely by external resistors. Oscillation frequency is set to 1.2MHz or 3.
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