LM2593HV

具有多种特性的 SIMPLE SWITCHER 电源转换器 150 KHz 2A 降压电压稳压器

The series of regulators are monolithic integrated circuits that provide all the active functions for a step-down buck switching regulator, capable of driving a 2-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3-V, 5-V, and an adjustable output version.

This series of switching regulators is similar to the LM2592HV with additional supervisory and performance features.

Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation, improved line and load specifications, fixed-frequency oscillator, Shutdown/Soft-start, output error flag, and flag delay.

The LM2593HV operates at a switching frequency of 150 kHz, thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Available in a standard 7-pin TO-220 package with several different lead bend options, and a 7-pin TO-263 surface-mount package.

Other features include a specified ±4% tolerance on output voltage under all conditions of input voltage and output load conditions, and ±15% on the oscillator frequency. External shutdown is included, featuring typically 90-µA standby current. Self-protection features include a two stage current limit for the output switch and an overtemperature shutdown for complete protection under fault conditions.

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3.3-V, 5-V, and Adjustable Output Versions

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Adjustable Version Output Voltage Range: 1.2 V

to 57 V ±4% Maximum Over Line and Load

Conditions

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Ensured 2-A Output Load Current

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Available in 7-Pin TO-220 and TO-263 Surface-

Mount Package

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Input Voltage Range up to 60 V

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150-kHz Fixed Frequency Internal Oscillator

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Shutdown and Soft-Start

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Out-of-Regulation Error Flag

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Error Flag Delay

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Low Power Standby Mode: IQ, Typically 90 µA

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High Efficiency

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Thermal Shutdown and Current-Limit Protection