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NX2154ACSTR PDF预览

NX2154ACSTR

更新时间: 2024-11-18 06:00:43
品牌 Logo 应用领域
美高森美 - MICROSEMI 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
17页 556K
描述
300kHz SYNCHRONOUS PWM CONTROLLER

NX2154ACSTR 技术参数

生命周期:Active零件包装代码:SOIC
包装说明:SOP,针数:8
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.76
Is Samacsys:N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 VJESD-30 代码:R-PDSO-G8
长度:4.89 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:封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装形状:RECTANGULAR
封装形式:SMALL OUTLINE认证状态:Not Qualified
座面最大高度:1.72 mm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
宽度:3.9 mmBase Number Matches:1

NX2154ACSTR 数据手册

 浏览型号NX2154ACSTR的Datasheet PDF文件第2页浏览型号NX2154ACSTR的Datasheet PDF文件第3页浏览型号NX2154ACSTR的Datasheet PDF文件第4页浏览型号NX2154ACSTR的Datasheet PDF文件第5页浏览型号NX2154ACSTR的Datasheet PDF文件第6页浏览型号NX2154ACSTR的Datasheet PDF文件第7页 
Evaluation board available.  
NX2154/2154A  
300kHz SYNCHRONOUS PWM CONTROLLER  
PRELIMINARY DATA SHEET  
Pb Free Product  
FEATURES  
DESCRIPTION  
n
Bus voltage operation from 2V to 40V  
The NX2154/2154A 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 40V to outputs as low as 0.8V voltage.  
The NX2154/2154A operates at fixed 300kHz. The  
NX2154/2154A employs fixed loss-less current limiting  
by sensing the Rdson of synchronous MOSFET followed  
by hiccup feature.NX2154A has higher current limit  
threshold than NX2154. 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  
Vin  
Vin  
+33V  
+5V  
MBR0530T1  
1uF  
50ME180WX  
1uF  
5
1
BST  
Vcc  
0.1uF  
M1A STM6920  
15uH  
7
2
Comp  
Hdrv  
M3  
12nF  
HI=SD  
Vout  
+5V,3A  
82pF  
8
4
SW  
Ldrv  
13.3k  
6
M1B  
6ME1000WG(1000uF,30mohm)  
Fb  
Gnd  
3
1k  
191  
Figure1 - Typical application of 2154  
ORDERING INFORMATION  
Device  
NX2154CSTR  
NX2154ACSTR  
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.1.2  
02/26/07  
1

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