LM2591HV - SIMPLE SWITCHER 电源转换器 150 kHz 1A 降压电压稳压器

LM2591HV是TI德州仪器公司的一款转换器（集成开关）产品，LM2591HV是SIMPLE SWITCHER 电源转换器 150 kHz 1A 降压电压稳压器，本站介绍了LM2591HV的封装应用图解、特点和优点、功能等，并给出了与LM2591HV相关的TI元器件型号供参考。

LM2591HV - SIMPLE SWITCHER 电源转换器 150 kHz 1A 降压电压稳压器 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品描述

The LM2591HV series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving a 1A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5V, and an adjustable output version.

This series of switching regulators is similar to the LM2590HV, but without some of the supervisory and performance features of the latter.

Requiring a minimum number of external components, these regulators are simple to use and include internal frequency compensation†, improved line and load specifications and a fixed-frequency oscillator.

The LM2591HV 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 5-lead package with several different lead bend options, and a 5-lead 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 90μA standby current. Self protection features include a two stage current limit for the output switch and an over temperature shutdown for complete protection under fault conditions.

† Patent Number 5,382,918.

产品特性

3.3V, 5V, and Adjustable Output Versions
Adjustable Version Output Voltage Range, 1.2V to 57V ±4% Max Over Line and Load Conditions
Specified 1A Output Load Current
Available in 5-Pin Package
Input Voltage Range Up to 60V
150 kHz Fixed Frequency Internal Oscillator
On/Off Control
Low Power Standby Mode, IQ Typically 90μA
High Efficiency
Thermal Shutdown and Current Limit Protection

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