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L5987 PDF预览

L5987

更新时间: 2024-11-23 03:49:47
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
页数 文件大小 规格书
42页 1038K
描述
3 A step-down switching regulator

L5987 技术参数

是否Rohs认证: 符合生命周期:Obsolete
零件包装代码:QFP包装说明:3 X 3 MM, 1.08 MM HEIGHT, ROHS COMPLIANT, VFQFP-8
针数:8Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.66Is Samacsys:N
其他特性:ALSO OPERATES IN ADJUSTABLE MODE FROM 0.6V TO 18V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:18 V最小输入电压:2.9 V
标称输入电压:12 VJESD-30 代码:S-PDSO-N8
长度:3 mm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:4.4 A
封装主体材料:PLASTIC/EPOXY封装代码:HVSON
封装等效代码:SOLCC8,.11,20封装形状:SQUARE
封装形式:SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度(摄氏度):NOT SPECIFIED
认证状态:Not Qualified座面最大高度:1 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:1000 kHz
温度等级:AUTOMOTIVE端子形式:NO LEAD
端子节距:0.5 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:3 mm
Base Number Matches:1

L5987 数据手册

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L5987  
3 A step-down switching regulator  
Preliminary Data  
Features  
3 A DC output current  
2.9 V to 18 V input voltage  
Output voltage adjustable from 0.6 V  
VFQFPN8 3x3 mm  
HSOP8 exposed pad  
250 kHz switching frequency, programmable  
up to 1 MHz  
Internal soft-start and inhibit  
Description  
Low dropout operation: 100 % duty cycle  
Voltage feed-forward  
The L5987 is a step down switching regulator with  
3.5 A (minimum) current limited embedded power  
MOSFET, so it is able to deliver up to 3 A current  
to the load depending on the application  
Zero load current operation  
Over current and thermal protection  
VFQFPN3x3-8L and HSOP8 package  
conditionals Section 5.7 and Section 5.8).  
The input voltage can range from 2.9 V to 18 V,  
while the output voltage can be set starting from  
Applications  
0.6 V to V . Having a minimum input voltage of  
IN  
Consumer:  
2.9 V, the device is suitable also for 3.3 V bus.  
STB, DVD, DVD recorder, car audio, LCD TV  
and monitors  
Requiring a minimum set of external components,  
the device includes an internal 250 kHz switching  
frequency oscillator that can be externally  
adjusted up to 1 MHz.  
Industrial:  
PLD, PLA, FPGA, chargers  
Networking: XDSL, modems, DC-DC modules  
The QFN and the HSOP package with exposed  
Computer:  
pad allow reducing the R  
down to 60 °C/W  
thJA  
Optical storage, hard disk drive, printers,  
audio/graphic cards  
and 40 °C/W respectively.  
LED driving  
Figure 1.  
Application circuit  
August 2008  
Rev 1  
1/42  
This is preliminary information on a new product now in development or undergoing evaluation.  
Details are subject to change without notice.  
www.st.com  
42  

L5987 替代型号

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3 A step-down switching regulator

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