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NX2423CMTR PDF预览

NX2423CMTR

更新时间: 2024-11-18 06:00:35
品牌 Logo 应用领域
美高森美 - MICROSEMI 驱动器稳压器开关式稳压器或控制器电源电路开关式控制器
页数 文件大小 规格书
20页 654K
描述
TWO PHASE SYNCHRONOUS PWM CONTROLLER WITH INTEGRATED FET DRIVER, DIFFERENTIAL CURRENT SENSE & 5V BIAS REGULATOR

NX2423CMTR 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:QFN
包装说明:HVQCCN, LCC24,.16SQ,20针数:24
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.74
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:S-PQCC-N24JESD-609代码:e3
长度:4 mm湿度敏感等级:1
功能数量:1端子数量:24
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:HVQCCN
封装等效代码:LCC24,.16SQ,20封装形状:SQUARE
封装形式:CHIP CARRIER峰值回流温度(摄氏度):260
认证状态:Not Qualified座面最大高度:0.85 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:1000 kHz
温度等级:COMMERCIAL端子面层:MATTE TIN
端子形式:NO LEAD端子节距:0.5 mm
端子位置:QUAD处于峰值回流温度下的最长时间:40
宽度:4 mmBase Number Matches:1

NX2423CMTR 数据手册

 浏览型号NX2423CMTR的Datasheet PDF文件第2页浏览型号NX2423CMTR的Datasheet PDF文件第3页浏览型号NX2423CMTR的Datasheet PDF文件第4页浏览型号NX2423CMTR的Datasheet PDF文件第5页浏览型号NX2423CMTR的Datasheet PDF文件第6页浏览型号NX2423CMTR的Datasheet PDF文件第7页 
NX2423  
TWO PHASE SYNCHRONOUS PWM CONTROLLER WITH  
INTEGRATED FET DRIVER, DIFFERENTIAL CURRENT SENSE  
& 5V BIAS REGULATOR  
Pb Free Product  
PRELIMINARY DATA SHEET  
FEATURES  
DESCRIPTION  
n Differential inductor DCR sensing eliminates the  
problem with layout parasitic  
n 5V bias regulator available  
The NX2423 is a two-phase PWM controller with inte-  
grated FET driver designed for low voltage high current  
application. The two phase synchronous buck converter  
offers ripple cancelation for both input and output. The  
NX2423 uses differential remote sensing using either cur-  
rent sense resistor or inductor DCR sensing to achieve  
accurate current matching between the two channels.  
Differential sensing eliminates the error caused by PCB  
board trace resistance that otherwise presents when us-  
ing a single ended voltage sensing.  
n Low Impedance On-board Drivers  
n Hiccup current limit and IOUT indication  
n Power Good for power sequencing  
n EN2_B pin allows the slave channel on and off while  
the master channel is working  
n Programmable frequency  
n Prebias start up  
n OVP without negative spike at output  
n Selectable between internal and external reference  
n Internal Schottky diode from PVCC to BST  
In addition the NX2423 offers high drive current capabil-  
ity especially for keeping the synchronous MOSFET off  
during SW node transition, can provide regulated 5V to  
IC biasing and drivers via 5V bias regulator, allows the  
slave channel on and off via EN2_B pin while the main  
channel is working. Other features: PGOOD output, pro-  
grammable switching frequency and hiccup current lim-  
iting circuitry.  
n Pb-free and RoHS compliant  
APPLICATIONS  
n
Graphic card High Current Vcore Supply  
n High Current on board DC to DC converter  
applications  
TYPICAL APPLICATION  
12V BUS  
C11  
C12  
R10  
C10  
2N3904  
VCCDRV  
BST1  
2N3904  
R13  
HDRV1  
SW1  
Q1  
Q2  
5V  
R14  
L1  
VOUT  
C13  
C14  
PVCC  
R29  
C15  
C31  
LDRV1  
R11  
C29  
C30  
5VCC  
R28  
CS+1  
CS-1  
REFIN  
AGND  
R15  
R18  
CSCOMP  
C17 C18  
C28  
BST2  
HDRV2  
SW2  
R16  
R17  
RT  
C19  
IOUT/IMAX  
Q3  
Q4  
L2  
C27  
C26  
C20  
C21  
VCOMP  
R27  
C22  
LDRV2  
R19  
C25  
FB  
R26  
R20  
CS+2  
CS-2  
EN2_B  
VOUT  
R24  
C24  
Ref for external circuitry  
INREFOUT/POK  
PGND(PAD)  
Figure1 - Typical application of NX2423  
ORDERING INFORMATION  
Device  
NX2423CMTR  
Temperature  
0 to 70oC  
Package  
MLPQ 4x4 - 24L  
Frequency  
Pb-Free  
Yes  
50kHz to 1MHz  
Rev. 2.1  
12/01/08  
1

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