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FAN5236QSCX PDF预览

FAN5236QSCX

更新时间： 2024-11-10 22:13:35
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD 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双倍数据速率
页数 文件大小 规格书
20页 199K
描述
Dual Mobile-Friendly DDR / Dual-output PWM Controller

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中文翻译

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FAN5236QSCX 技术参数

是否Rohs认证： 符合生命周期：Obsolete
零件包装代码：SOIC包装说明：QSOP-28
针数：28Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.71其他特性：CAN ALSO OPERATE IN HYSTERETIC MODE
模拟集成电路 - 其他类型：DUAL SWITCHING CONTROLLER控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：5.25 V
最小输入电压：4.75 V标称输入电压：5 V
JESD-30 代码：R-PDSO-G28JESD-609代码：e3
长度：9.905 mm湿度敏感等级：2
功能数量：1端子数量：28
最高工作温度：85 °C最低工作温度：-10 °C
最大输出电流：5 A封装主体材料：PLASTIC/EPOXY
封装代码：SSOP封装等效代码：SSOP28,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, SHRINK PITCH
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：PUSH-PULL
最大切换频率：345 kHz温度等级：OTHER
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.635 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3.895 mm
Base Number Matches：1

FAN5236QSCX 数据手册

 浏览型号FAN5236QSCX的Datasheet PDF文件第2页浏览型号FAN5236QSCX的Datasheet PDF文件第3页浏览型号FAN5236QSCX的Datasheet PDF文件第4页浏览型号FAN5236QSCX的Datasheet PDF文件第5页浏览型号FAN5236QSCX的Datasheet PDF文件第6页浏览型号FAN5236QSCX的Datasheet PDF文件第7页 
www.fairchildsemi.com  
FAN5236  
Dual Mobile-Friendly DDR / Dual-output PWM Controller  
Features  
General Description  
• Highly flexible dual synchronous switching PWM  
controller includes modes for:  
The FAN5236 PWM controller provides high efficiency and  
regulation for two output voltages adjustable in the range  
from 0.9V to 5.5V that are required to power I/O, chip-sets,  
and memory banks in high-performance notebook comput-  
ers, PDAs and Internet appliances. Synchronous rectification  
and hysteretic operation at light loads contribute to a high  
efficiency over a wide range of loads. The hysteretic mode of  
operation can be disabled separately on each PWM converter  
if PWM mode is desired for all load levels. Efficiency is even  
further enhanced by using MOSFET’s RDS(ON) as a current  
sense component.  
– DDR mode with in-phase operation for reduced  
channel interference  
– 90˚ phase shifted two-stage DDR Mode for reduced  
input ripple  
– Dual Independent regulators 180° phase shifted  
• Complete DDR Memory power solution  
– VTT Tracks VDDQ/2  
– VDDQ/2 Buffered Reference Output  
• Lossless current sensing on low-side MOSFET or  
precision over-current using sense resistor  
• VCC Under-voltage Lockout  
Feed-forward ramp modulation, average current mode con-  
trol scheme, and internal feedback compensation provide  
fast response to load transients. Out-of-phase operation with  
180 degree phase shift reduces input current ripple. The con-  
troller can be transformed into a complete DDR memory  
power supply solution by activating a designated pin. In  
DDR mode of operation one of the channels tracks the out-  
put voltage of another channel and provides output current  
sink and source capability — features essential for proper  
powering of DDR chips. The buffered reference voltage  
required by this type of memory is also provided. The  
FAN5236 monitors these outputs and generates separate  
PGx (power good) signals when the soft-start is completed  
and the output is within 10ꢀ of its set point. A built-in  
over-voltage protection prevents the output voltage from  
going above 120ꢀ of the set point. Normal operation is auto-  
matically restored when the over-voltage conditions go  
away. Under-voltage protection latches the chip off when  
either output drops below 75ꢀ of its set value after the soft-  
start sequence for this output is completed. An adjustable  
over-current function monitors the output current by sensing  
the voltage drop across the lower MOSFET. If precision cur-  
rent-sensing is required, an external current-sense resistor  
may optionally be used.  
• Converters can operate from +5V or 3.3V or Battery  
power input (5 to 24V)  
• Excellent dynamic response with Voltage Feed-Forward  
and Average Current Mode control  
• Power-Good Signal  
• Also supports DDR-II and HSTL  
• Light load Hysteretic mode maximizes efficiency  
• QSOP28, TSSOP28  
Applications  
• DDR VDDQ and VTT voltage generation  
• Mobile PC dual regulator  
• Server DDR power  
• Hand-Held PC power  
REV. 1.1.7 4/4/03  
1234567...20

中文翻译

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FAN5236QSCX 替代型号

型号 品牌 替代类型 描述 数据表
FAN5236MTCX FAIRCHILD

完全替代

 Dual Mobile-Friendly DDR / Dual-output PWM Controller
FAN5236MTC FAIRCHILD

完全替代

 Dual Mobile-Friendly DDR / Dual-output PWM Controller
FAN5236QSC FAIRCHILD

完全替代

 Dual Mobile-Friendly DDR / Dual-output PWM Controller

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