CXLE8121 1.3MHz PWM boost switching regu- lator designed for constant-current white LED driver appli

Time of publication：2020-04-07Number of views：25

目录7hp嘉泰姆

1.产品概述         2.产品特点7hp嘉泰姆
3.应用范围       4.下载产品资料PDF文档 7hp嘉泰姆
5.产品封装图                     6.电路原理图             7hp嘉泰姆
7.功能概述       8.相关产品7hp嘉泰姆

一,产品概述(General Description)         7hp嘉泰姆
      The CXLE8121 is a 1.3MHz PWM boost switching regu- lator designed for7hp嘉泰姆
constant-current white LED driver applications.7hp嘉泰姆
       The CXLE8121   can drive a string of up to 4 white LEDs from a 3.2V supply7hp嘉泰姆
or 6 white LEDs from a 5V supply in series, ensuring uniform brightness and eliminating several ballast resistors. The CXLE8121 implements a constant frequency 1.3MHz PWM control scheme.The high frequency PWM operation7hp嘉泰姆
also saves board space by reducing external component sizes. To improve efficiency, the feedback voltage is set to 95·mV, which reduces the power dissipation in the current setting resistor.The CXLE8121   is equipped with OVP protection ability,the SW pin monitors the output voltage and will turn off the device if an overvoltage condition is present to prevent damage from an open circuit condition.7hp嘉泰姆
     The CXLE8121 is available in SOT-23-5 package.7hp嘉泰姆
二.产品特点(Features)7hp嘉泰姆
1.)Inherently Uniform LED Current7hp嘉泰姆
2.)High Efficiency up to 84%7hp嘉泰姆
3.)Drives up to 4 LEDs from a 3.2V Supply or 67hp嘉泰姆
4.)LEDs from a 5V Supply7hp嘉泰姆
5.)1.3MHz PWM Operation Frequency7hp嘉泰姆
6.)Requires Only 0.22μF Output Capacitor7hp嘉泰姆
7.)Shutdown Current: < 1μA7hp嘉泰姆
8.)Built-in Output Overvoltage Protection7hp嘉泰姆
三,应用范围 (Applications)7hp嘉泰姆
Digital Cameras7hp嘉泰姆
LCD modules7hp嘉泰姆
GPS Receivers7hp嘉泰姆
Cellular Phones7hp嘉泰姆
PDAs, Handheld Computers7hp嘉泰姆
四.下载产品资料PDF文档 7hp嘉泰姆

需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！7hp嘉泰姆

QQ截图20160419174301.jpg 7hp嘉泰姆

五,产品封装图 (Package)7hp嘉泰姆
7hp嘉泰姆

Pin Number7hp嘉泰姆	Pin Name7hp嘉泰姆	Function7hp嘉泰姆
17hp嘉泰姆	SW7hp嘉泰姆	Switch Pin. Connect inductor/diode here. The output voltage can range up to 29V but not7hp嘉泰姆 extend this limit. If the voltage on this pin is higher than the overvoltage protection thre-7hp嘉泰姆 shold (OVP), the device comes back to shutdown mode. To restart the chip, one must then7hp嘉泰姆 send a low to high sequence on shutdown pin or switch off the V supply.7hp嘉泰姆 IN7hp嘉泰姆
27hp嘉泰姆	GND7hp嘉泰姆	Ground Pin.7hp嘉泰姆
37hp嘉泰姆	FB7hp嘉泰姆	Voltage Feedback. Reference voltage is 95mV.7hp嘉泰姆
47hp嘉泰姆	SHDN7hp嘉泰姆	Shutdown Pin. Connect to 1.5V or higher to enable device;7hp嘉泰姆 Connect to 0.4V or less to disable device.7hp嘉泰姆
57hp嘉泰姆	V7hp嘉泰姆 IN7hp嘉泰姆	Input Supply Pin. Must be locally bypassed.7hp嘉泰姆

六.电路原理图7hp嘉泰姆
7hp嘉泰姆
七,功能概述7hp嘉泰姆

Parameter7hp嘉泰姆	Symbol7hp嘉泰姆	Value7hp嘉泰姆	Unit7hp嘉泰姆
Input Voltage7hp嘉泰姆	V7hp嘉泰姆 IN7hp嘉泰姆	107hp嘉泰姆	V7hp嘉泰姆
SW Voltage7hp嘉泰姆		367hp嘉泰姆	V7hp嘉泰姆
FB Voltage7hp嘉泰姆		107hp嘉泰姆	V7hp嘉泰姆
SHDN Voltage7hp嘉泰姆		107hp嘉泰姆	V7hp嘉泰姆
Maximum Junction Temperature7hp嘉泰姆		1257hp嘉泰姆	o7hp嘉泰姆 C7hp嘉泰姆
Storage Temperature Range7hp嘉泰姆	T7hp嘉泰姆 STG7hp嘉泰姆	-65 to 1507hp嘉泰姆	o7hp嘉泰姆 C7hp嘉泰姆
Lead Temperature (Soldering, 10sec)7hp嘉泰姆	T7hp嘉泰姆 LEAD7hp嘉泰姆	3007hp嘉泰姆	o7hp嘉泰姆 C7hp嘉泰姆
ESD (Machine Model)7hp嘉泰姆		2507hp嘉泰姆	V7hp嘉泰姆

八,相关产品更多同类产品.......7hp嘉泰姆

白灯背光驱动IC>>>小屏白灯背光驱动IC7hp嘉泰姆
型号7hp嘉泰姆	工作模式7hp嘉泰姆	工作电7hp嘉泰姆压范围7hp嘉泰姆	过压保7hp嘉泰姆护电压7hp嘉泰姆	反馈电压7hp嘉泰姆	开关电7hp嘉泰姆流限制7hp嘉泰姆	效率7hp嘉泰姆	静态电流7hp嘉泰姆	工作频率7hp嘉泰姆	调光形式7hp嘉泰姆	调光频7hp嘉泰姆率范围7hp嘉泰姆	封装7hp嘉泰姆
CXLE81217hp嘉泰姆	PWM7hp嘉泰姆	2.5V-10V7hp嘉泰姆	29V7hp嘉泰姆	0.1V7hp嘉泰姆	320mA7hp嘉泰姆	85%7hp嘉泰姆	0.1uA7hp嘉泰姆	1.3MHz7hp嘉泰姆	PWM7hp嘉泰姆		SOT-257hp嘉泰姆
CXLE81227hp嘉泰姆	PWM7hp嘉泰姆	2.2V-6.0V7hp嘉泰姆	17V7hp嘉泰姆	0.25V7hp嘉泰姆	400mA7hp嘉泰姆	82%7hp嘉泰姆	3mA7hp嘉泰姆	1.4MHz7hp嘉泰姆	PWM7hp嘉泰姆	100Hz-1KHz7hp嘉泰姆	SOT-267hp嘉泰姆
白灯背光驱动IC>>>大中屏白灯背光驱动IC7hp嘉泰姆
型号7hp嘉泰姆	工作模式7hp嘉泰姆	工作电7hp嘉泰姆压范围7hp嘉泰姆	过压保7hp嘉泰姆护电压7hp嘉泰姆	反馈电压7hp嘉泰姆	开关电7hp嘉泰姆流限制7hp嘉泰姆	效率7hp嘉泰姆	静态电流7hp嘉泰姆	工作频率7hp嘉泰姆	调光形式7hp嘉泰姆	调光频7hp嘉泰姆率范围7hp嘉泰姆	封装7hp嘉泰姆
CXLE81237hp嘉泰姆	PWM7hp嘉泰姆	2.2V-6.0V7hp嘉泰姆	17V7hp嘉泰姆	0.25V7hp嘉泰姆	700mA7hp嘉泰姆	82%7hp嘉泰姆	3mA7hp嘉泰姆	1.4MHz7hp嘉泰姆	PWM7hp嘉泰姆	100Hz-1KHz7hp嘉泰姆	SOT-267hp嘉泰姆
CXLE81247hp嘉泰姆	PWM7hp嘉泰姆	2.5V-6.0V7hp嘉泰姆	23V7hp嘉泰姆	0.25V7hp嘉泰姆	1.0A7hp嘉泰姆	88%7hp嘉泰姆	0.4mA7hp嘉泰姆	1.0MHz7hp嘉泰姆	PWM7hp嘉泰姆	100Hz-10KHz7hp嘉泰姆	SOT-267hp嘉泰姆
CXLE81257hp嘉泰姆	PWM7hp嘉泰姆	2.5V-6.0V7hp嘉泰姆	30V7hp嘉泰姆	0.104V7hp嘉泰姆	400mA7hp嘉泰姆	87%7hp嘉泰姆	0.2mA7hp嘉泰姆	1.2MHz7hp嘉泰姆	PWM7hp嘉泰姆	小于1KHz7hp嘉泰姆	SOT-267hp嘉泰姆
CXLE8125B7hp嘉泰姆	PWM7hp嘉泰姆	2.7V-6.0V7hp嘉泰姆	38V7hp嘉泰姆	0.2V7hp嘉泰姆	1A7hp嘉泰姆	91%7hp嘉泰姆	5uA7hp嘉泰姆	0.8MHz7hp嘉泰姆	PWM7hp嘉泰姆		SOT-267hp嘉泰姆
CXLE81277hp嘉泰姆	PWM7hp嘉泰姆	2.7V-6.0V7hp嘉泰姆	37V7hp嘉泰姆	0.3V7hp嘉泰姆	900mA7hp嘉泰姆	90%7hp嘉泰姆	0.28mA7hp嘉泰姆	0.9MHz7hp嘉泰姆	PWM7hp嘉泰姆	100Hz-200KHz7hp嘉泰姆	SOT-267hp嘉泰姆
CXLE8128A/B/C7hp嘉泰姆	PWM7hp嘉泰姆	2.5V-6.0V7hp嘉泰姆	28V7hp嘉泰姆	0.1V/0.25V7hp嘉泰姆 /0.3V7hp嘉泰姆	1.5A7hp嘉泰姆	90%7hp嘉泰姆	0.1uA7hp嘉泰姆	1.2MHz7hp嘉泰姆	PWM7hp嘉泰姆	20KHz-1MHz7hp嘉泰姆	SOT-267hp嘉泰姆
CXLE81297hp嘉泰姆	PWM7hp嘉泰姆	3.0V-25V7hp嘉泰姆	28V7hp嘉泰姆	0.2V7hp嘉泰姆	2A7hp嘉泰姆	90%7hp嘉泰姆	1uA7hp嘉泰姆	1.2MHz7hp嘉泰姆	PWM7hp嘉泰姆	20KHz-1MHz7hp嘉泰姆	SOT-267hp嘉泰姆
CXLE8129B7hp嘉泰姆	PWM7hp嘉泰姆	2.7V-6.5V7hp嘉泰姆	22V7hp嘉泰姆	0.2V7hp嘉泰姆	2.8A7hp嘉泰姆	95%7hp嘉泰姆	5uA7hp嘉泰姆	1MHz7hp嘉泰姆	PWM7hp嘉泰姆		SOT-267hp嘉泰姆
CXLE81317hp嘉泰姆	PWM7hp嘉泰姆	3.0V-6.0V7hp嘉泰姆	24V7hp嘉泰姆	0.2V7hp嘉泰姆	2.5A7hp嘉泰姆	88%7hp嘉泰姆	1uA7hp嘉泰姆	1.2MHz7hp嘉泰姆	PWM7hp嘉泰姆	10KHz-100KHz7hp嘉泰姆	SOT-267hp嘉泰姆
白灯背光驱动IC>>>超大屏白灯背光驱动IC7hp嘉泰姆
型号7hp嘉泰姆	工作模式7hp嘉泰姆	工作电7hp嘉泰姆压范围7hp嘉泰姆	过压保7hp嘉泰姆护电压7hp嘉泰姆	反馈电压7hp嘉泰姆	开关电7hp嘉泰姆流限制7hp嘉泰姆	效率7hp嘉泰姆	静态电流7hp嘉泰姆	工作频率7hp嘉泰姆	调光形式7hp嘉泰姆	调光频7hp嘉泰姆率范围7hp嘉泰姆	封装7hp嘉泰姆
CXLE81137hp嘉泰姆	PWM7hp嘉泰姆	2.2V-6V7hp嘉泰姆	26V7hp嘉泰姆	0.2V7hp嘉泰姆	3A7hp嘉泰姆		100uA7hp嘉泰姆	800KHz7hp嘉泰姆	PWM7hp嘉泰姆		SOP-87hp嘉泰姆
CXLE81147hp嘉泰姆	PWM7hp嘉泰姆	2.2V-6V7hp嘉泰姆	27V7hp嘉泰姆	0.2V7hp嘉泰姆	3A7hp嘉泰姆		100uA7hp嘉泰姆	800KHz7hp嘉泰姆	PWM7hp嘉泰姆		DFN3*3-87hp嘉泰姆
CXLE81157hp嘉泰姆	PWM7hp嘉泰姆	10V-35V7hp嘉泰姆	200V7hp嘉泰姆	0.2V7hp嘉泰姆	扩流7hp嘉泰姆		400uA7hp嘉泰姆	200KHz7hp嘉泰姆	PWM7hp嘉泰姆		SOP-87hp嘉泰姆
CXLE81167hp嘉泰姆	PWM7hp嘉泰姆	3.6V-26V7hp嘉泰姆	32V7hp嘉泰姆	0.22V7hp嘉泰姆	2A7hp嘉泰姆	92%7hp嘉泰姆		400KHz7hp嘉泰姆	PWM7hp嘉泰姆		SOP-87hp嘉泰姆
CXLE81177hp嘉泰姆	PWM7hp嘉泰姆	3.6V-26V7hp嘉泰姆	60V7hp嘉泰姆	0.22V7hp嘉泰姆	2A7hp嘉泰姆	92%7hp嘉泰姆		400KHz7hp嘉泰姆	PWM7hp嘉泰姆		SOP-87hp嘉泰姆
CXLE8117B7hp嘉泰姆	PWM7hp嘉泰姆	5.0V-45V7hp嘉泰姆	60V7hp嘉泰姆	0.22V7hp嘉泰姆	2A7hp嘉泰姆	93%7hp嘉泰姆		400KHz7hp嘉泰姆	PWM7hp嘉泰姆		SOP-87hp嘉泰姆
CXLE81197hp嘉泰姆	PWM7hp嘉泰姆	3.6V-36V7hp嘉泰姆	60V7hp嘉泰姆	0.22V7hp嘉泰姆	4A7hp嘉泰姆	94%7hp嘉泰姆		180KHz7hp嘉泰姆	PWM7hp嘉泰姆		TO252-5L7hp嘉泰姆
CXLE81207hp嘉泰姆	PWM7hp嘉泰姆	5.0V-36V7hp嘉泰姆	60V7hp嘉泰姆	0.22V7hp嘉泰姆	5A7hp嘉泰姆	94%7hp嘉泰姆		180KHz7hp嘉泰姆	PWM7hp嘉泰姆		TO263-5L7hp嘉泰姆
白灯背光驱动IC>>>同步升压白灯背光驱动IC7hp嘉泰姆
型号7hp嘉泰姆	工作模式7hp嘉泰姆	工作电7hp嘉泰姆压范围7hp嘉泰姆	过压7hp嘉泰姆保护电压7hp嘉泰姆	反馈电压7hp嘉泰姆	开关7hp嘉泰姆电流限制7hp嘉泰姆	效率7hp嘉泰姆	静态电流7hp嘉泰姆	工作频率7hp嘉泰姆	调光形式7hp嘉泰姆	调光频7hp嘉泰姆率范围7hp嘉泰姆	封装7hp嘉泰姆
CXLE81327hp嘉泰姆	PWM7hp嘉泰姆	2.7V-16V7hp嘉泰姆	36V7hp嘉泰姆	0.2V7hp嘉泰姆	340mA7hp嘉泰姆	81%7hp嘉泰姆	3.2uA7hp嘉泰姆	1.2MHz7hp嘉泰姆	PWM7hp嘉泰姆		SOT-27hp嘉泰姆

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