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CLF7045T6R8N PDF预览

CLF7045T6R8N

更新时间: 2022-04-25 05:06:15
品牌 Logo 应用领域
特瑞仕 - TOREX 晶体转换器晶体管驱动
页数 文件大小 规格书
21页 571K
描述
18V Driver Transistor Built-In Synchronous Step-Down DC/DC Converter

CLF7045T6R8N 数据手册

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XC9248Series  
ETR05022-004  
18V Driver Transistor Built-In Synchronous Step-Down DC/DC Converter  
GENERAL DESCRIPTION  
The XC9248 series is 18V bootstrap synchronous step-down DC/DC converter with built-in Nch-Nch driver transistors.  
With an input voltage range from 4.5V to 18V and a maximum output current of 2.2A, the series is suitable for digital home  
appliance power supplies and can be used with small ceramic capacitors.  
The series has a 0.8V reference voltage, and using externally connected resistors, the output voltage can be set freely from  
1.0V to 12V.  
The control method is synchronous PWM (Source/ Sink). The soft start time is internally set to 2.8ms (TYP.), also can be  
adjusted using external capacitor.  
With UVLO (Under Voltage Lock Out) function, the internal driver transistors are forced OFF when input voltage falls down  
below 3.8V (TYP.).  
The series includes over current protection, VOUT short-circuit protection, Lx short-circuit protection, VOUT overvoltage  
protection and thermal shutdown.  
FEATURES  
Input Voltage  
APPLICATIONS  
Digital home appliance  
4.5V 18V  
1.0V12V (VFB=0.8V±1.5%) (*1)  
Output Voltage  
Office automation equipment  
Notebook computers  
Output Current  
2.2A  
Efficiency  
93.8% (*1) @VIN=12V,VOUT=5V, IOUT=700mA  
500kHz  
Oscillation Frequency  
Maximum Duty Cycle  
Soft-Start Time  
Car accessories power supplies  
79%  
Fixed2.8ms, set by external capacitor  
UVLO  
Protection Circuit  
High side over current protection  
Low side over current protection  
VOUT Short-circuit Protection  
LX Short-circuit Protection  
VOUT Over voltage protection  
Thermal shutdown  
Package  
SOP-8FD  
Environmentally Friendly  
EU RoHS Compliant, Pb Free  
(*1) Performance depends on external components and wiring on the PCB.  
TYPICAL APPLICATION CIRCUIT  
TYPICAL PERFORMANCE  
CHARACTERISTICS  
Efficiency vs. Output Current  
L
Ta=25°C  
VIN  
EN  
VIN  
EN  
SS  
FB  
LX  
GND  
BST  
VL  
VOUT  
100  
90  
80  
CBST  
CFB  
RFB1  
70  
60  
50  
40  
30  
20  
10  
0
VIN=12V , VOUT=5V  
VIN=12V , VOUT=3.3V  
CIN  
CSS  
CVL  
CL  
RFB2  
0
500  
1000  
1500  
2000  
Output Current : IOUT [mA]  
1/21  

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