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ML4865CS2 PDF预览

ML4865CS2

更新时间: 2024-09-15 14:53:47
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD 开关光电二极管
页数 文件大小 规格书
12页 160K
描述
Switching Regulator, Current-mode, 2A, 200kHz Switching Freq-Max, CMOS, PDSO8, SOIC-8

ML4865CS2 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:SOIC包装说明:SOP, SOP8,.25
针数:8Reach Compliance Code:unknown
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.68模拟集成电路 - 其他类型:SWITCHING REGULATOR
控制模式:CURRENT-MODE控制技术:PULSE FREQUENCY MODULATION
最大输入电压:10 V最小输入电压:1.8 V
标称输入电压:5 VJESD-30 代码:R-PDSO-G8
JESD-609代码:e0长度:4.9 mm
功能数量:1端子数量:8
最高工作温度:70 °C最低工作温度:
最大输出电流:2 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
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:BOOST最大切换频率:200 kHz
技术:CMOS温度等级:COMMERCIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
宽度:3.9 mmBase Number Matches:1

ML4865CS2 数据手册

 浏览型号ML4865CS2的Datasheet PDF文件第2页浏览型号ML4865CS2的Datasheet PDF文件第3页浏览型号ML4865CS2的Datasheet PDF文件第4页浏览型号ML4865CS2的Datasheet PDF文件第5页浏览型号ML4865CS2的Datasheet PDF文件第6页浏览型号ML4865CS2的Datasheet PDF文件第7页 
www.fairchildsemi.com  
ML4865  
High Voltage High Current Boost Regulator  
Features  
General Description  
• Guaranteed full load start-up and operation at 1.8V input  
• Continuous conduction mode for high output current  
Very low quiescent current  
• Pulse frequency modulation and internal synchronous  
rectification for high efficiency  
• Maximum switching frequency > 200kHz  
• Minimum external components  
• Low ON resistance internal switching FETs  
• Fixed 12V output can be adjusted to lower output voltages  
The ML4865 is a high voltage, continuous conduction boost  
regulator designed for DC to DC conversion in multiple cell  
battery powered systems. Continuous conduction allows the  
regulator to maximize output current for a given inductor.  
The maximum switching frequency can exceed 200kHz,  
allowing the use of small, low cost inductors. The ML4865 is  
capable of start-up with input voltages as low as 1.8V and  
generates a 12V output with output voltage accuracy of 4ꢀ.  
Unlike most boost regulators, the ML4865 isolates the load  
from the battery when the SHDN pin is high. An integrated  
synchronous rectifier eliminates the need for an external  
Schottky diode and provides a lower forward voltage drop,  
resulting in higher conversion efficiency. In addition, low  
quiescent battery current and variable frequency operation  
result in high efficiency even at light loads. The ML4865  
requires only one inductor and two capacitors to build a very  
small regulator circuit capable of achieving conversion effi-  
ciencies approaching 90ꢀ.  
Block Diagram  
4
6
V
V
L2  
SHDN  
L1  
SHUTDOWN  
7
CONTROL  
V
IN  
3
SYNCHRONOUS  
RECTIFIER  
CONTROL  
START-UP  
V
OUT  
+
8
1
+
SENSE  
FEEDBACK  
CONTROL  
+
BOOST  
CONTROL  
SHDN  
2.42V  
PWR GND  
GND  
2
5
REV. 1.0.2 8/10/01  

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