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NX2114ACSTR

更新时间: 2024-11-02 06:00:43
品牌 Logo 应用领域
美高森美 - MICROSEMI 控制器
页数 文件大小 规格书
20页 810K
描述
300kHz & 600kHz SYNCHRONOUS PWM CONTROLLER

NX2114ACSTR 数据手册

 浏览型号NX2114ACSTR的Datasheet PDF文件第2页浏览型号NX2114ACSTR的Datasheet PDF文件第3页浏览型号NX2114ACSTR的Datasheet PDF文件第4页浏览型号NX2114ACSTR的Datasheet PDF文件第5页浏览型号NX2114ACSTR的Datasheet PDF文件第6页浏览型号NX2114ACSTR的Datasheet PDF文件第7页 
Evaluation board available.  
NX2114/2114A  
300kHz & 600kHz SYNCHRONOUS PWM CONTROLLER  
PRELIMINARY DATA SHEET  
Pb Free Product  
FEATURES  
DESCRIPTION  
n Synchronous Controller in 8 Pin Package  
The NX2114 controller IC is a synchronous Buck con-  
troller IC designed for step down DC to DC converter  
applications. Synchronous control operation replaces  
the traditional catch diode with an Nch MOSFET result-  
ing in improved converter efficiency.Although the NX2114  
controller is optimized to convert single 5V bus voltages  
to supplies as low as 0.8V output voltage, however us-  
ing a few external components it can also be used for  
other input supplies such as 12V input (See NX2113  
data sheet for more optimized solution). The NX2114  
operates at 300kHz while 2114A is set at 600kHz  
operation which together with less than 50 nS of dead  
band provides an efficient and cost effective solution.  
Other features of the device are:  
n
n
n
Bus voltage operation from 2V to 25V  
Single 5V Supply Operation  
Short protection with feedback UVLO  
n Internal 300kHz for 2114 and 600kHz for 2114A  
n Internal Digital Soft Start Function  
n Shut Down via pulling comp pin low  
n Pb-free and RoHS compliant  
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  
Internal digital soft start; Vcc undervoltage lock out; Out-  
put undervoltage protection with digital filter and shut-  
down capability via the enable pin.  
n
n
Hard Disk Drive  
Set Top Box  
TYPICAL APPLICATION  
L2 1uH  
Vin  
+5V  
C4  
47uF,70mohm  
R5  
10  
D1 MBR0530T1  
C6  
1uF  
C8  
47uF,70mohm  
C5  
1uF  
Cin  
5
1
220uF,12mohm  
C7  
0.1uF  
BST  
Vcc  
M1  
L1 1.5uH  
7
2
8
Comp  
Fb  
Hdrv  
OFF  
R6  
10k  
C2  
2N3904  
ON  
1.5nF  
Vout  
R7  
C1  
47pF  
SW  
R4  
+1.6V,6A  
10k  
Co  
22.1k  
2 x (220uF,15mohm)  
6
M2  
4
Ldrv  
Gnd  
3
R1  
10.2k  
R2  
10.2k  
R3  
1.5k  
C3  
2.2nF  
Figure1 - Typical application of 2114  
ORDERING INFORMATION  
Device  
NX2114CSTR  
NX2114ACSTR  
Temperature  
0 to 70oC  
Package  
SOIC-8L  
SOIC-8L  
Frequency  
300kHz  
600kHz  
Pb-Free  
Yes  
Yes  
0 to 70o C  
Rev. 4.0  
06/20/06  
1

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