The LM2597HVM-ADJ/NOPB is a SIMPLE SWITCHER® step-down Voltage Regulator provides all the active functions for a step-down (buck) switching regulator, capable of driving a 0.5A load with excellent line and load regulation. This series of switching regulator is similar to the LM2594 series, with additional supervisory and performance features added. Requiring a minimum number of external components, this regulator is simple to use and include internal frequency compensation, improved line and load specifications, fixed-frequency oscillator, shutdown/soft-start, error flag delay and error flag output. The LM2597xx series operates at a switching frequency of 150kHz, thus allowing smaller-sized filter components than what would be required with lower-frequency switching regulators. Because of its high efficiency, the copper traces on the printed-circuit board are normally the only heat sinking required.

• Shutdown/soft-start function
• Out of regulation error flag
• Error output delay
• Bias supply pin (VBS) for internal circuitry
• Improves efficiency at high input voltages
• Low power standby mode
• High efficiency
• Uses readily available standard inductors
• Thermal shutdown and current-limit protection
• ±4% Maximum over line and load conditions
• 85µA Typical quiescent current
• Green product and no Sb/Br

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