HG2591

功能特点

产品名称：降压式 DC-DC

产品型号：HG2591

产品描述：

The HG2591 seriesofregulatorsaremonolithicintegrated

circuits that provide all the active functions for a step-down

(buck) switching regulator, capable of driving a 3A load with

excellent line and load regulation. These devices are available

in fixed output voltages of 3.3V, 5V, 12V, and an adjustable

output version.

Requiring a minimum number of external components, these

regulators are simple to use and include internal frequency

compensation?, and a fixed-frequency oscillator.

The HG2592 seriesoperatesataswitchingfrequencyof

150 kHz thus allowing smaller sized filter components than

what would be needed with lower frequency switching regulators.

Available in a standard 5-lead TO-220 package with

several different lead bend options, and a 5-lead TO-263

surface mount package.

A standard series of inductors are available from several

different manufacturers optimized for use with the LM2596

series. This feature greatly simplifies the design of

switch-mode power supplies.

Other features include a guaranteed ±4% tolerance on output

voltage under specified input voltage and output load

conditions, and ±15% on the oscillator frequency. External

shutdown is included, featuring typically 80 μA standby current.

Self protection features include a two stage frequency

reducing current limit for the output switch and an over

temperature shutdown for complete protection under fault

conditions.

参数：

Maximum Supply Voltage 45V

ON /OFF Pin Input Voltage ?0.3 ￡ V ￡ +25V

Feedback Pin Voltage ?0.3 ￡ V ￡+25V

Output Voltage to Ground

(Steady State) ?1V

Power Dissipation Internally limited

StorageTemperatureRange ?65°Cto+150°C

ESD Susceptibility HumanBodyModel 2kV

封装： TO-220 TO-263