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L5973D PDF预览

L5973D

更新时间: 2024-11-22 22:31:47
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
10页 133K
描述
2.5A SWITCH STEP DOWN SWITCHING REGULATOR

L5973D 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:LEAD FREE, HSOP-8
针数:8Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
Factory Lead Time:11 weeks风险等级:0.87
Samacsys Confidence:3Samacsys Status:Released
Samacsys PartID:5580Samacsys Pin Count:9
Samacsys Part Category:Integrated CircuitSamacsys Package Category:Small Outline Packages
Samacsys Footprint Name:HSOP8 (Exposed Pad)Samacsys Released Date:2015-05-20 16:02:46
Is Samacsys:N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 V标称输入电压:12 V
JESD-30 代码:R-PDSO-G8JESD-609代码:e3
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:3.5 A封装主体材料:PLASTIC/EPOXY
封装代码:HLSOP封装等效代码:SOP8,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, HEAT SINK/SLUG, LOW PROFILE
峰值回流温度(摄氏度):260认证状态:Not Qualified
座面最大高度:1.7 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:Matte Tin (Sn)
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 mmBase Number Matches:1

L5973D 数据手册

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L5973D  
2.5A SWITCH STEP DOWN SWITCHING REGULATOR  
2.5A INTERNAL SWITCH  
OPERATING INPUT VOLTAGE FROM 4.4V TO 36V  
3.3V / (±2%) REFERENCE VOLTAGE  
OUTPUT VOLTAGE ADJUSTABLE FROM  
1.235V TO 35V  
LOW DROPOUT OPERATION: 100% DUTY  
CYCLE  
HSOP8 - EXPOSED PAD  
ORDERING NUMBER: L5973D  
250KHz INTERNALLY FIXED FREQUENCY  
VOLTAGE FEEDFORWARD  
ZERO LOAD CURRENT OPERATION  
INTERNAL CURRENT LIMITING  
INHIBIT FOR ZERO CURRENT  
CONSUMPTION  
SYNCHRONIZATION  
PROTECTION AGAINST FEEDBACK  
DISCONNECTION  
DESCRIPTION  
The L5973D is a step down monolithic power switch-  
ing regulator with a minimum switch current limit of  
2.5A so it is able to deliver more than 2A DC current  
to the load depending on the application conditions.  
The output voltage can be set from 1.235V to 35V.  
The high current level is also achieved thanks to an  
SO8 package with exposed frame, that allows to re-  
THERMAL SHUTDOWN  
duce the R  
down to approximately 40°C/W  
th(j-amb)  
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.  
An internal oscillator fixes the switching frequency at  
250KHz.  
Having a minimum input voltage of 4.4V only, it is  
particularly suitable for 5V bus, available in all com-  
puter related applications.  
APPLICATIONS:  
CONSUMER: STB, DVD, TV, VCR,CAR  
RADIO, LCD MONITORS  
NETWORKING: XDSL, MODEMS,DC-DC  
MODULES  
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  
VREF  
L1 15µH  
3.3V  
VOUT=3.3V  
6
OUT  
FB  
1
5
VIN = 4.4V to 35V  
VCC  
D1  
STPS340U  
8
2
R1  
5.6K  
L5973D  
SYNC.  
COMP  
C2  
330µF  
10V  
3
7
C1  
10µF  
35V  
4
C4  
22nF  
INH  
GND  
R2  
CERAMIC  
3.3K  
C3  
220pF  
R3  
4.7K  
D03IN1439  
May 2003  
1/10  

L5973D 替代型号

型号 品牌 替代类型 描述 数据表
L5973ADTR STMICROELECTRONICS

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