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FAN5234QSC PDF预览

FAN5234QSC

更新时间: 2024-11-27 22:40:59
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
页数 文件大小 规格书
15页 538K
描述
Mobile-Friendly PWM/PFM Controller

FAN5234QSC 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-16
针数:16Reach Compliance Code:unknown
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.19其他特性:CAN ALSO OPERATE IN HYSTERETIC MODE
模拟集成电路 - 其他类型: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-G16JESD-609代码:e3
长度:4.9 mm湿度敏感等级:2
功能数量:1端子数量:16
最高工作温度:85 °C最低工作温度:-10 °C
封装主体材料:PLASTIC/EPOXY封装代码:SSOP
封装等效代码:SSOP16,.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:690 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:3.9 mmBase Number Matches:1

FAN5234QSC 数据手册

 浏览型号FAN5234QSC的Datasheet PDF文件第2页浏览型号FAN5234QSC的Datasheet PDF文件第3页浏览型号FAN5234QSC的Datasheet PDF文件第4页浏览型号FAN5234QSC的Datasheet PDF文件第5页浏览型号FAN5234QSC的Datasheet PDF文件第6页浏览型号FAN5234QSC的Datasheet PDF文件第7页 
www.fairchildsemi.com  
FAN5234  
Mobile-Friendly PWM/PFM Controller  
Features  
General Description  
• Wide input voltage range (2 to 24V) for Mobile systems  
• Excellent dynamic response with Voltage Feed-Forward  
and Average Current Mode control  
• Lossless current sensing on low-side MOSFET or  
precision over-current using sense resistor  
• VCC Under-voltage Lockout  
• Power-Good Signal  
• Light load Hysteretic mode maximizes efficiency  
• QSOP16, TSSOP16  
The FAN5234 PWM controller provides high efficiency and  
regulation with an adjustable output from 0.9V to 5.5V that  
are required to power I/O, chip-sets, memory banks or  
peripherals in high-performance notebook computers, 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 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.  
• 300Khz or 600Khz operation  
Feed-forward ramp modulation, average current mode  
control, and internal feedback compensation provide fast  
response to load transients. The FAN5234 monitors these  
outputs and generates a PGOOD (power good) signal 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 automatically restored when the over-  
voltage conditions go away. Under-voltage protection latches  
the chip off when the output drops below 75ꢀ of its set value  
after the soft-start sequence is completed. An adjustable  
over-current function monitors the output current by sensing  
the voltage drop across the lower MOSFET.  
Applications  
• Mobile PC regulator  
• Hand-Held PC power  
Typical Application  
VIN (BATTERY)  
= 2 to 24V  
VIN  
C1  
C5  
C2  
1
D1  
VCC  
BOOT  
+5  
11  
4
15  
+5  
C4  
Q1A  
FAN5234  
HDRV  
14  
13  
R5  
C3  
L1  
ILIM  
1.8V@3.5A  
SW  
C6  
R1  
EN  
Q1B  
LDRV  
3
7
R3  
SS1  
10  
PGND  
ISNS  
+5  
9
FPWM  
AGND  
16  
8
R2  
12  
R4  
VSEN  
VOUT  
6
5
PGOOD  
2
Figure 1. 1.8V Output Regulator (see Table 2, page 12 for BOM)  
REV. 1.0.10 5/3/04  

FAN5234QSC 替代型号

型号 品牌 替代类型 描述 数据表
FAN5234QSCX FAIRCHILD

完全替代

Mobile-Friendly PWM/PFM Controller

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