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XC9105D092MR 参数 Datasheet PDF下载

XC9105D092MR图片预览
型号: XC9105D092MR
PDF下载: 下载PDF文件 查看货源
内容描述: 陶瓷电容器兼容,升压型DC / DC控制器 [Ceramic Capacitor Compatible, Step-up DC/DC Controllers]
分类和应用: 电容器陶瓷电容器控制器
文件页数/大小: 23 页 / 1622 K
品牌: TOREX [ Torex Semiconductor ]
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XC9103/XC9104/XC9105 Series  
TYPICAL APPLICATION CIRCUIT  
When obtaining VDD from a source other than VOUT,  
please insert a capacitor CIN between the VDD pin and the  
GND pin in order to provide stable operations.  
Insert RB and CB when using a bipolar  
NPN Transistor.  
Please place CL and CIN as close as to the VOUT and VDD  
pins respectively and also close to the GND pin.  
Strengthen the wiring sufficiently. RSENSE should be  
removed and shorted when the CL capacitor except for  
ceramic or low ESR capacitor is used.  
NOTES ON USE  
SCE  
ON  
SPWM  
CONDITIONS  
Chip Disable  
OFF  
OFF  
ON  
Duty=25%, PWM/PFM automatic switching  
PWM  
OFF  
By using external signals, the control of the XC9105 series can be  
alternated between PWM control and PWM/PFM automatic switching  
control. By inputting a voltage of more than VDD -0.2V to the CE/PWM  
pin, PWM control can be selected. On the other hand, PWM/PFM  
automatic switching control can be selected by inputting a voltage of less  
than VDD -1.0V.  
With the XC9105, by connecting resistors of the same value (RM1, RM2) as  
shown in the diagram to the left, it is possible to obtain chip disable with  
SCE ON and, SPWM ON or OFF, PWM/PFM auto switching at Duty=25%  
with SCE OFF & SPWM ON, & PFM control with both switches OFF.  
Note:  
When operating at VDD -1.8V and below (stepping-up from VIN=0.9V), it is  
necessary to pull-up to VDD in order to allow the CE/PWM pin reach the  
VCEH voltage level. Please make sure that the IC is in PWM control  
(SPWM=OFF) when operations start. If SPWM is ON, there are times when  
chip enable might not operate.  
* Please select your external components carefully.  
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