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L5972 PDF预览

L5972

更新时间: 2024-01-01 17:51:25
品牌 Logo 应用领域
意法半导体 - STMICROELECTRONICS 稳压器开关
页数 文件大小 规格书
10页 176K
描述
2A SWITCH STEP DOWN SWITCHING REGULATOR

L5972 技术参数

是否Rohs认证: 符合生命周期:Active
零件包装代码:SOIC包装说明:SOP, SOP8,.25
针数:8Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
Factory Lead Time:10 weeks风险等级:0.72
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:VOLTAGE-MODE
最大输入电压:36 V最小输入电压:4.4 V
标称输入电压:12 VJESD-30 代码:R-PDSO-G8
JESD-609代码:e4长度:4.9 mm
湿度敏感等级:3功能数量:1
端子数量:8最高工作温度:125 °C
最低工作温度:-40 °C最大输出电流:3 A
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP8,.25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:1.75 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:280 kHz
技术:MOS温度等级:AUTOMOTIVE
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:3.9 mm
Base Number Matches:1

L5972 数据手册

 浏览型号L5972的Datasheet PDF文件第2页浏览型号L5972的Datasheet PDF文件第3页浏览型号L5972的Datasheet PDF文件第4页浏览型号L5972的Datasheet PDF文件第5页浏览型号L5972的Datasheet PDF文件第6页浏览型号L5972的Datasheet PDF文件第7页 
L5972D  
2A SWITCH STEP DOWN SWITCHING REGULATOR  
2A INTERNAL SWITCH  
OPERATING INPUT VOLTAGE FROM 4.4V  
TO 36V  
OUTPUT VOLTAGE ADJUSTABLE FROM  
1.235V TO 35V  
LOW DROPOUT OPERATION: 100% DUTY  
CYCLE  
SO8 (4+2+2)  
ORDERING NUMBERS: L5972D (SO8)  
250KHz INTERNALLY FIXED FREQUENCY  
VOLTAGE FEEDFORWARD  
L5972D013TR (Tape & Reel)  
ZERO LOAD CURRENT OPERATION  
INTERNAL CURRENT LIMITING  
DESCRIPTION  
The L5972D is a step down monolithic power switch-  
ing regulator with a minimum switch current limit of  
2A so it is able to deliver more than 1.5A DC current  
to the load depending on the application conditions.  
PROTECTION AGAINST FEEDBACK  
DISCONNECTION  
THERMAL SHUTDOWN  
The output voltage can be set from 1.235V to 35V.  
The device uses an internal P-Channel D-MOS tran-  
sistor (with a typical Rdson of 250m) as switching  
element to minimize the size of the external compo-  
nents.  
APPLICATIONS:  
CONSUMER: STB, DVD, TV, VCR,CAR  
RADIO, LCD MONITORS  
An internal oscillator fixes the switching frequency at  
250KHz.  
NETWORKING: XDSL, MODEMS,DC-DC  
MODULES  
Having a minimum input voltage of 4.4V only, it is  
particularly suitable for 5V bus, available in all com-  
puter related applications.  
COMPUTER: PRINTERS, AUDIO/GRAPHIC  
CARDS, OPTICAL STORAGE, HARD DISK  
DRIVE  
Pulse by pulse current limit with the internal frequen-  
cy modulation offers an effective constant current  
short circuit protection.  
INDUSTRIAL: CHARGERS, CAR BATTERY  
DC-DC CONVERTERS  
TEST APPLICATION CIRCUIT  
L1 33µH  
VOUT=3.3V  
VIN = 4.4V to 35V  
VCC  
OUT  
FB  
1
8
4
D1  
R1  
5.6K  
L5972D  
STPS2L40U  
COMP  
C2  
100µF  
10V  
C1  
10µF  
35V  
5
6
2
3
7
C4  
22nF  
GND  
CERAMIC  
R2  
3.3K  
C3  
220pF  
R3  
4.7K  
D03IN1436  
May 2003  
1/10  

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