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L4976D PDF预览

L4976D

更新时间: 2024-09-14 22:51:55
品牌 Logo 应用领域
意法半导体 - STMICROELECTRONICS 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管PC
页数 文件大小 规格书
11页 102K
描述
1A STEP DOWN SWITCHING REGULATOR

L4976D 技术参数

是否Rohs认证: 不符合生命周期:Active
零件包装代码:SOIC包装说明:LEAD FREE, SOP-16
针数:16Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
Factory Lead Time:25 weeks风险等级:1.6
Samacsys Confidence:3Samacsys Status:Released
Samacsys PartID:179354Samacsys Pin Count:16
Samacsys Part Category:Integrated CircuitSamacsys Package Category:Small Outline Packages
Samacsys Footprint Name:SO16Samacsys Released Date:2015-05-07 08:39:43
Is Samacsys:N模拟集成电路 - 其他类型:SWITCHING REGULATOR
控制模式:VOLTAGE-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:55 V最小输入电压:8 V
标称输入电压:24 VJESD-30 代码:R-PDSO-G16
JESD-609代码:e4长度:10.3 mm
湿度敏感等级:3功能数量:1
端子数量:16最大输出电流:2.5 A
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP16,.4封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:2.65 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:300 kHz
技术:BCDMOS端子面层:Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:30
宽度:7.5 mmBase Number Matches:1

L4976D 数据手册

 浏览型号L4976D的Datasheet PDF文件第2页浏览型号L4976D的Datasheet PDF文件第3页浏览型号L4976D的Datasheet PDF文件第4页浏览型号L4976D的Datasheet PDF文件第5页浏览型号L4976D的Datasheet PDF文件第6页浏览型号L4976D的Datasheet PDF文件第7页 
L4976  
1A STEP DOWN SWITCHING REGULATOR  
UP TO 1A STEP DOWN CONVERTER  
OPERATING INPUT VOLTAGE FROM 8V TO  
55V  
PRECISE 5.1V REFERENCE VOLTAGE  
OUTPUT VOLTAGE ADJUSTABLE FROM  
3.3V TO 50V  
SWITCHING FREQUENCY ADJUSTABLE UP  
TO 500KHz  
Minidip  
SO16W  
VOLTAGEFEEDFORWARD  
ZERO LOAD CURRENT OPERATION  
INTERNAL CURRENT LIMITING (PULSE-BY-  
PULSE AND HICCUPMODE)  
PROTECTION AGAINST FEEDBACK DIS-  
CONNECTION  
ORDERING NUMBERS: L4976 (Minidip)  
L4976D (SO16)  
THERMAL SHUTDOWN  
ages must be observed).  
A wide input voltage range between 8V to 55V  
and output voltages regulated from 3.3V to 40V  
cover the majority of today’s applications.  
Features of this new generations of DC-DC con-  
verter include pulse-by-pulse current limit, hiccup  
mode for short circuit protection, voltage feedfor-  
ward regulation, protection against feedback loop  
disconnectionand thermalshutdown.  
DESCRIPTION  
The L4976 is a step down monolithic power  
switching regulator delivering 1A at a voltage be-  
tween 3.3V and 50V (selected by a simple exter-  
nal divider). Realized in BCD mixed technology,  
the device uses an internal power D-MOS transis-  
tor (with a typical Rdson of 0.25) to obtain very  
high efficency and high switchingspeed.  
The device is available in plastic dual in line,  
MINIDIP 8 for standard assembly, and SO16W  
for SMD assembly.  
A switching frequency up to 250KHz is achiev-  
able (the maximum power dissipation of the pack-  
TYPICAL APPLICATION CIRCUIT  
Vi=8V to 55V  
5
8
R1  
20K  
L4976  
3
2
4
C1  
220µ  
C7  
220nF  
C2  
2.7nF  
L1  
260µ  
7
1
6
VO=3.3V/1A  
F
H
63V  
(77120)  
C6  
100nF  
R2  
9.1K  
D1  
GI  
SB360  
C8  
330µF  
C4  
22nF  
May 2000  
1/11  

L4976D 替代型号

型号 品牌 替代类型 描述 数据表
L4976D013TR STMICROELECTRONICS

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