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NX2124ACSTR PDF预览

NX2124ACSTR

更新时间: 2024-11-19 05:53:23
品牌 Logo 应用领域
美高森美 - MICROSEMI 控制器
页数 文件大小 规格书
17页 517K
描述
300kHz SYNCHRONOUS PWM CONTROLLER

NX2124ACSTR 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active零件包装代码:SOIC
包装说明:SOP, SOP8,.25针数:8
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.73
模拟集成电路 - 其他类型:SWITCHING CONTROLLER控制模式:VOLTAGE-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:5.5 V
最小输入电压:4.5 V标称输入电压:5 V
JESD-30 代码:R-PDSO-G8长度:4.89 mm
湿度敏感等级:1功能数量:1
端子数量:8最高工作温度:70 °C
最低工作温度: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
峰值回流温度(摄氏度):260认证状态:Not Qualified
座面最大高度:1.72 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:300 kHz温度等级:COMMERCIAL
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:40
宽度:3.9 mmBase Number Matches:1

NX2124ACSTR 数据手册

 浏览型号NX2124ACSTR的Datasheet PDF文件第2页浏览型号NX2124ACSTR的Datasheet PDF文件第3页浏览型号NX2124ACSTR的Datasheet PDF文件第4页浏览型号NX2124ACSTR的Datasheet PDF文件第5页浏览型号NX2124ACSTR的Datasheet PDF文件第6页浏览型号NX2124ACSTR的Datasheet PDF文件第7页 
Evaluation board available.  
NX2124/2124A  
300kHz SYNCHRONOUS PWM CONTROLLER  
PRELIMINARY DATA SHEET  
Pb Free Product  
FEATURES  
DESCRIPTION  
n
Bus voltage operation from 2V to 25V  
The NX2124/2124A controller IC is a synchronous Buck  
controller IC designed for step down DC to DC con-  
verter applications. It is optimized to convert bus volt-  
ages from 2V to 25V to outputs as low as 0.8V voltage.  
The NX2124/2124A operates at fixed 300kHz, employs  
fixed loss-less current limiting by sensing the Rdson of  
synchronous MOSFET followed by hiccup feature.  
NX2124A has higher current limit threshold than NX2124.  
Feedback under voltage also triggers hiccup.  
n Fixed 300kHz voltage mode controller  
n Internal Digital Soft Start Function  
n Prebias Startup  
n Less than 50 nS adaptive deadband  
n
n
Current limit triggers hiccup by sensing Rdson of  
Synchronous MOSFET  
No negative spike at Vout during startup and  
shutdown  
n Pb-free and RoHS compliant  
Other features of the device are: 5V gate drive,Adaptive  
deadband control, Internal digital soft start, Vcc  
undervoltage lock out and shutdown capability via the  
comp pin.  
APPLICATIONS  
n
n
n
Graphic Card on board converters  
Memory Vddq Supply in mother board applications  
On board DC to DC such as  
5V to 3.3V, 2.5V or 1.8V  
Hard Disk Drive  
n
n
Set Top Box  
TYPICAL APPLICATION  
L2 1uH  
Vin  
+5V  
C4  
100uF  
C5  
1uF  
Cin  
280uF  
18mohm  
R5  
10  
D1  
MBR0530T1  
C3  
1uF  
5
1
C6  
0.1uF  
Vcc  
BST  
M1  
2
Hdrv  
7
6
COMP  
M3  
L1 1.5uH  
HI=SD  
Vout  
R4  
37.4k  
8
4
SW  
Ldrv  
+1.8V 9A  
Co  
C7  
27pF  
R1  
4k  
2 x (1500uF,13mohm)  
M2  
C2  
2.2nF  
R2  
FB  
C1  
4.7nF  
10k  
Gnd  
3
R3  
8k  
Figure1 - Typical application of 2124  
ORDERING INFORMATION  
Device  
NX2124CSTR  
NX2124ACSTR  
Temperature  
0 to 70oC  
0 to 70o C  
Package  
SOIC-8L  
SOIC-8L  
Frequency  
300kHz  
300kHz  
OCP Threshold  
360mV  
Pb-Free  
Yes  
Yes  
540mV  
Rev.1.8  
02/28/08  
1

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