Datasheet > LM2598S-3.3

LM2598S-3.3

更新时间： 2024-11-08 22:25:35

品牌	Logo	应用领域
美国国家半导体 - NSC		转换器稳压器
页数	文件大小	规格书
33页	849K
描述
SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator, with Features

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LM2598S-3.3 技术参数

是否Rohs认证：	不符合	生命周期：	Transferred
包装说明：	TO-263, SMT-7	Reach Compliance Code：	not_compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.08	模拟集成电路 - 其他类型：	SWITCHING REGULATOR
控制模式：	CURRENT-MODE	控制技术：	PULSE WIDTH MODULATION
最大输入电压：	40 V	最小输入电压：	4.5 V
JESD-30 代码：	R-PSSO-G7	JESD-609代码：	e0
长度：	10.16 mm	湿度敏感等级：	3
功能数量：	1	端子数量：	7
最高工作温度：	125 °C	最低工作温度：	-25 °C
最大输出电流：	2.6 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	TO-263	封装等效代码：	SMSIP7H,.55,50TB
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	235	认证状态：	Not Qualified
座面最大高度：	4.8 mm	子类别：	Switching Regulator or Controllers
表面贴装：	YES	切换器配置：	BUCK
最大切换频率：	173 kHz	技术：	BIPOLAR
温度等级：	OTHER	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	SINGLE	处于峰值回流温度下的最长时间：	30
宽度：	8.635 mm	Base Number Matches：	1

LM2598S-3.3 数据手册

January 2001

LM2598

SIMPLE SWITCHER^®Power Converter 150 kHz

1A Step-Down Voltage Regulator, with Features

ternal shutdown is included, featuring typically 85 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.

General Description

The LM2598 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 avail-

able in fixed output voltages of 3.3V, 5V, 12V, and an adjust-

able output version.

Features

n 3.3V, 5V, 12V, and adjustable output versions

n Adjustable version output voltage range, 1.2V to 37V

This series of switching regulators is similar to the LM2595

series, with additional supervisory and performance features

added.

4% max over line and load conditions

n Guaranteed 1A output current

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

package

Requiring a minimum number of external components, these

regulators are simple to use and include internal frequency

n Input voltage range up to 40V

n Excellent line and load regulation specifications

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_Qtypically 85 µA

n High Efficiency

n Uses readily available standard inductors

n Thermal shutdown and current limit protection

†

compensation , improved line and load specifications,

fixed-frequency oscillator, Shutdown /Soft-start, error flag

delay and error flag output.

The LM2598 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. Typically, for output voltages less than 12V,

and ambient temperatures less than 50˚C, no heat sink is

required.

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 LM2598 series. This

feature greatly simplifies the design of switch-mode power

supplies.

Applications

n Simple high-efficiency step-down (buck) regulator

n Efficient pre-regulator for linear regulators

n On-card switching regulators

Other features include a guaranteed 4% tolerance on out-

n Positive to Negative converter

put voltage under all conditions of input voltage and output

load conditions, and 15% on the oscillator frequency. Ex-

Typical Application (Fixed Output Voltage Versions)

DS012593-1

†

Patent Number 5,382,918.

SIMPLE SWITCHER^®and Switchers Made Simple^®are registered trademarks of National Semiconductor Corporation.

DS012593

www.national.com

12 3 4 5 6 7...33

中文翻译

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LM2598S-3.3 替代型号

型号	品牌	替代类型	描述	数据表
LM2598S-3.3/NOPB	TI	功能相似	4.5V 至 40V、1A SIMPLE SWITCHER® 降压转换器 \| KTW \|
LM2598S-3.3	TI	功能相似	2.6A SWITCHING REGULATOR, 173kHz SWITCHING FREQ-MAX, PSSO7, TO-263, SMT-7

与LM2598S-3.3相关器件

型号	品牌	获取价格	描述	数据表
LM2598S-3.3/NOPB	NSC	获取价格	IC 2.6 A SWITCHING REGULATOR, 173 kHz SWITCHING FREQ-MAX, PSSO7, TO-263, SMT-7, Switching
LM2598S-3.3/NOPB	TI	获取价格	4.5V 至 40V、1A SIMPLE SWITCHER® 降压转换器 \| KTW \|
LM2598S-5.0	NSC	获取价格	SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator, with Features
LM2598S-5.0/NOPB	TI	获取价格	4.5V 至 40V、1A SIMPLE SWITCHER® 降压转换器 \| KTW \|
LM2598S-ADJ	NSC	获取价格	SIMPLE SWITCHER Power Converter 150 kHz 1A Step-Down Voltage Regulator, with Features
LM2598S-ADJ	TI	获取价格	2.6A SWITCHING REGULATOR, 173kHz SWITCHING FREQ-MAX, PSSO7, TO-263, SMT-7
LM2598S-ADJ/NOPB	TI	获取价格	4.5V 至 40V、1A SIMPLE SWITCHER® 降压转换器 \| KTW \|
LM2598SX-12/NOPB	TI	获取价格	4.5V 至 40V、1A SIMPLE SWITCHER® 降压转换器 \| KTW \|
LM2598SX-3.3/NOPB	TI	获取价格	4.5V 至 40V、1A SIMPLE SWITCHER® 降压转换器 \| KTW \|
LM2598SX-5.0	ETC	获取价格	Voltage-Mode SMPS Controller

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