LM2599S-5.0 National Semiconductor, LM2599S-5.0 Datasheet

LM2599S-5.0

Manufacturer Part Number

LM2599S-5.0

Description

DC/DC Converter IC

Manufacturer

National Semiconductor

Datasheets

1.LM2599SX-5.0.pdf (32 pages)

2.LM2599S-5.0.pdf (31 pages)

3.LM2599S-5.0.pdf (31 pages)

Specifications of LM2599S-5.0

Input Voltage

40V

Output Current

Output Voltage

No. Of Pins

Termination Type

SMD

Mounting Type

Through Hole

Voltage Regulator Type

Buck Switching

Output Current Max

Lead Free Status / RoHS Status

Contains lead / RoHS non-compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

LM2599S-5.0

Manufacturer:

NS/国半

Quantity:

20 000

Company:

Allchip Electronic(HK) Limited

Part Number:

LM2599S-5.0/NOPB

Manufacturer:

Quantity:

17 372

Current page: 1 of 32
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LM2599

SIMPLE SWITCHER

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

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

feature greatly simplifies the design of switch-mode power

supplies.

Other features include a guaranteed

put voltage under all conditions of input voltage and output

load conditions, and

ternal shutdown is included, featuring typically 80 µA

Typical Application

SIMPLE SWITCHER

†

, improved line and load specifications,

and Switchers Made Simple

15% on the oscillator frequency. Ex-

(Fixed Output Voltage Versions)

are registered trademarks of National Semiconductor Corporation.

4% tolerance on out-

DS012582

Power Converter 150 kHz 3A

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

n Guaranteed 3A output current

n Available in 7-pin TO-220 and TO-263 (surface mount)

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

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

Package

Note:

4% max over line and load conditions

†

Patent Number 5,382,918.

typically 80 µA

DS012582-1

December 2000

www.national.com

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