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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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LM2599 bảng dữ liệu(PDF) 1 Page - National Semiconductor (TI) |
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LM2599 bảng dữ liệu(HTML) 1 Page - National Semiconductor (TI) |
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1 / 31 page  LM2599 SIMPLE SWITCHER® Power Converter 150 kHz 3A Step-Down Voltage Regulator, with Features General Description The LM2599 series of regulators are monolithic integrated 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 avail- able in fixed output voltages of 3.3V, 5V, 12V, and an adjust- able output version. This series of switching regulators is similar to the LM2596 series, with additional supervisory and performance features added. 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, error flag de- lay and error flag output. The LM2599 series 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-lead TO-220 package with several different lead bend options, and a 7-lead TO-263 Surface mount package. A standard series of inductors (both through hole and sur- face mount types) are available from several different manu- facturers optimized for use with the LM2599 series. This fea- ture greatly simplifies the design of switch-mode power supplies. Other features include a guaranteed ±4% tolerance on out- put voltage under all conditions of input voltage and output load conditions, and ±15% on the oscillator frequency. Ex- ternal shutdown is included, featuring typically 80 µA 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. Features n 3.3V, 5V, 12V, and adjustable output versions n Adjustable version output voltage range, 1.2V to 37V ±4% max over line and load conditions n Guaranteed 3A output current n Available in 7-pin TO-220 and TO-263 (surface mount) Package n Input voltage range up to 40V n 150 kHz fixed frequency internal oscillator n Shutdown/Soft-start n Out of regulation error flag n Error output delay n Low power standby mode, I Q typically 80 µA n High Efficiency n Uses readily available standard inductors n Thermal shutdown and current limit protection Applications n Simple high-efficiency step-down (buck) regulator n Efficient pre-regulator for linear regulators n On-card switching regulators n Positive to Negative converter Note: † Patent Number 5,382,918. Typical Application (Fixed Output Voltage Versions) SIMPLE SWITCHER® and Switchers Made Simple® are registered trademarks of National Semiconductor Corporation. DS012582-1 April 1998 © 2000 National Semiconductor Corporation DS012582 www.national.com |
Số phần tương tự - LM2599 |
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Mô tả tương tự - LM2599 |
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