Datasheet > LM2576BM

LM2576BM

更新时间： 2024-01-20 14:06:37

品牌	Logo	应用领域
TGS		稳压器
页数	文件大小	规格书
9页	416K
描述
3A Step-Down Voltage Regulator

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LM2576BM 技术参数

是否Rohs认证：	符合	生命周期：	Active
包装说明：	TO-263,	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
Factory Lead Time：	7 weeks	风险等级：	1.58
其他特性：	ALSO OPERATES IN ADJUSTABLE MODE FROM 1.23V TO 37V	模拟集成电路 - 其他类型：	SWITCHING REGULATOR
最大输入电压：	40 V	最小输入电压：	4 V
标称输入电压：	12 V	JESD-30 代码：	R-PSSO-G5
JESD-609代码：	e3	长度：	10.287 mm
湿度敏感等级：	1	功能数量：	1
端子数量：	5	最高工作温度：	85 °C
最低工作温度：	-40 °C	最大输出电流：	7.5 A
封装主体材料：	PLASTIC/EPOXY	封装代码：	TO-263
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	245	认证状态：	Not Qualified
座面最大高度：	4.59 mm	表面贴装：	YES
切换器配置：	BUCK	最大切换频率：	63 kHz
温度等级：	INDUSTRIAL	端子面层：	Matte Tin (Sn) - annealed
端子形式：	GULL WING	端子节距：	1.7 mm
端子位置：	SINGLE	处于峰值回流温度下的最长时间：	40
宽度：	9.144 mm	Base Number Matches：	1

LM2576BM 数据手册

TIGER ELECTRONIC CO.,LTD

3A Step-Down Voltage Regulator

LM2576BM

DESCRIPITION

The LM2576BM series of regulators are monolithic integrated circuits that provide all the

active functions for a step-down (buck) switching regulator, capable of driving 3A load

with excellent line and load regulation. These devices are available in fixed output voltages

of 3.3V, 5V, 12V and an ADJ 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 LM2576BM series offers a high-efficiency replacement for popular three-terminal linear

regulators. It substantially reduces the size of the heat sink, and in some cases no heat sink

is required. A standard series of inductors optimized for use with the LM2576BM are

available from several different manufacturers. This feature greatly simplifies the design of

switch-mode power supplies.

Other features include a guaranteed ±4% tolerance on output voltage within specified input

voltages and output load conditions, and ±10% on the oscillator frequency. External

shutdown is included, featuring 50 µA (typical) standby current. The output switch includes

cycle-by-cycle current limiting, as well as thermal shutdown for full protection under fault

conditions.

FEATURES

APPLICATIONS

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

Simple high-efficiency

step-down (buck) regulator

Efficient pre-regulator for

linear regulators

Guaranteed 3A output current

Adjustable version output voltage range,1.23V to

37V±4% max over line and load conditions

52 kHz fixed frequency internal oscillator

TTL shutdown capability, low power standby mode

High efficiency

On-card switching regulators

Positive to negative

converter (Buck-Boost)

Uses readily available standard inductors

Thermal shutdown and current limit protection

Wide input voltage range up to 40V

Requires only 4 external components

1/9

12 3 4 5 6 7...9

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