The CXLE8129 is a step-up converter designed for driving up to 7 series whiteLEDs from a single cell Lithium lon batle . The CXLE8129 uses current mode， fixed frequency architecture to regulate an LED hich is measured through an external current sense resistor. Its low 200mV feedback voltage reduces power loss and improves efficiency
The CXLE8129 includes under-voltage lockout，current limiting and thermal overload protectionpreventing damage in the event of an output overload.Optimized operation frequency can meet the requirement of small LC filters value and operation current with high efficiency. Internal soft start function can reduce the inrush curren . Tiny package type provide the best solution for PCB space saving and total BOM co
-
[ CXLE8129 ]"
目录
1.产品概述 2.产品特点
3.应用范围 4.下载产品资料PDF文档
5.产品封装图 6.电路原理图
7.功能概述 8.相关产品
一,产品概述(General Description)
The CXLE8129 is a step-up converter designed for driving up to 7 series whiteLEDs from a single cell Lithium lon batle . The CXLE8129 uses current mode， fixed frequency architecture to regulate an LED hich is measured through an external current sense resistor. Its low 200mV feedback voltage reduces power loss and improves efficiency
The CXLE8129 includes under-voltage lockout，current limiting and thermal overload protectionpreventing damage in the event of an output overload.Optimized operation frequency can meet the requirement of small LC filters value and operation current with high efficiency. Internal soft start function can reduce the inrush curren . Tiny package type provide the best solution for PCB space saving and total BOM co
二.产品特点(Features)
1.)High Efficiency: Up to 90%
2.)1.2MHz Constant Frequency Operation
3.)Integrated internal Power MOSFET
4.)Drives up to 7 Series WLEDs
5.)Low 200mV Feedback Voltage
6.)Soft-start/Dimming with wide Frequency Range
7.)UVLO, Thermal Shutdown
8.)Internal Current limit
9.)Over Voltage Protection
10.)Small LC Filter
11.)Minimize the External Component
12.)<1μA Shutdown Current
13.)SOT23-6 Package
三,应用范围 (Applications)
Camera Flash White LED
Mobile Phone, Smart Phone LED Backlight
PDA LED Backlight
Digital Still Cameras
Camcorder
四.下载产品资料PDF文档
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！
五,产品封装图 (Package)
|
Pin Name |
Pin Number |
Description |
|
SW |
1 |
Inductor Connection. Connect to the switched side of the external |
|
GND |
2 |
Ground Pin. |
|
FB |
3 |
Current-Sense Feedback Input. Connect a resistor from FB to GND to set |
|
EN |
4 |
Enable and LED Brightness Control Input. Pull high to turn on IC.Drive EN |
|
|
5 |
Over Voltage Input. The CXLE8129 turn off the N-channel MOSFET when |
|
VIN |
6 |
Power Supply Input. Must be closely decoupled to GND with a 1μF or |
六.电路原理图
七,功能概述
|
PARAMETER |
CONDITIONS |
MIN |
TYP |
MAX |
UNIT |
|
Operating Input Voltage |
3 |
24 |
V |
||
|
Under Voltage Lockout |
2.6 |
V |
|||
|
Under Voltage Lockout |
100 |
mV |
|||
|
Current (Shutdown) |
V EN<0.4V |
1 |
μA |
||
|
Quiescent Current |
V FB=0.15V，No switching |
200 |
μA |
||
|
Supply Current |
V FB=0V，switching |
0.6 |
1 |
mA |
|
|
Regulated Feedback |
194 |
200 |
206 |
mV |
|
|
Switching Frequency |
1.2 |
MHz |
|||
|
ON Resistance of NMOS |
0.1 |
Ω |
|||
|
Peak Current Limit |
V IN= 4.2V,Duty cycle=50% |
2 |
A |
||
|
EN Shutdown Voltage |
0.4 |
V |
|||
|
EN Enable Voltage |
1.5 |
V |
|||
|
EN Leakage Current |
±0.01 |
±1.0 |
μA |
||
|
OVP Threshold |
Open LED,V OUT Rising |
28 |
V |
八,相关产品 更多同类产品.......
|
白灯背光驱动IC>>>小屏白灯背光驱动IC |
|||||||||||
|
型号 |
工作模式 |
工作电 压范围 |
过压保 护电压 |
反馈电压 |
开关电 流限制 |
效率 |
静态电流 |
工作频率 |
调光形式 |
调光频 率范围 |
封装 |
|
PWM |
2.5V-10V |
29V |
0.1V |
320mA |
85% |
0.1uA |
1.3MHz |
PWM |
SOT-25 |
||
|
PWM |
2.2V-6.0V |
17V |
0.25V |
400mA |
82% |
3mA |
1.4MHz |
PWM |
100Hz-1KHz |
SOT-26 |
|
|
白灯背光驱动IC>>>大中屏白灯背光驱动IC |
|||||||||||
|
型号 |
工作模式 |
工作电 压范围 |
过压保 护电压 |
反馈电压 |
开关电 流限制 |
效率 |
静态电流 |
工作频率 |
调光形式 |
调光频 率范围 |
封装 |
|
PWM |
2.2V-6.0V |
17V |
0.25V |
700mA |
82% |
3mA |
1.4MHz |
PWM |
100Hz-1KHz |
SOT-26 |
|
|
PWM |
2.5V-6.0V |
23V |
0.25V |
1.0A |
88% |
0.4mA |
1.0MHz |
PWM |
100Hz-10KHz |
SOT-26 |
|
|
PWM |
2.5V-6.0V |
30V |
0.104V |
400mA |
87% |
0.2mA |
1.2MHz |
PWM |
小于1KHz |
SOT-26 |
|
|
PWM |
2.7V-6.0V |
38V |
0.2V |
1A |
91% |
5uA |
0.8MHz |
PWM |
SOT-26 |
||
|
PWM |
2.7V-6.0V |
37V |
0.3V |
900mA |
90% |
0.28mA |
0.9MHz |
PWM |
100Hz-200KHz |
SOT-26 |
|
|
PWM |
2.5V-6.0V |
28V |
0.1V/0.25V /0.3V |
1.5A |
90% |
0.1uA |
1.2MHz |
PWM |
20KHz-1MHz |
SOT-26 |
|
|
PWM |
3.0V-25V |
28V |
0.2V |
2A |
90% |
1uA |
1.2MHz |
PWM |
20KHz-1MHz |
SOT-26 |
|
|
PWM |
2.7V-6.5V |
22V |
0.2V |
2.8A |
95% |
5uA |
1MHz |
PWM |
SOT-26 |
||
|
PWM |
3.0V-6.0V |
24V |
0.2V |
2.5A |
88% |
1uA |
1.2MHz |
PWM |
10KHz-100KHz |
SOT-26 |
|
|
白灯背光驱动IC>>>超大屏白灯背光驱动IC |
|||||||||||
|
型号 |
工作模式 |
工作电 压范围 |
过压保 护电压 |
反馈电压 |
开关电 流限制 |
效率 |
静态电流 |
工作频率 |
调光形式 |
调光频 率范围 |
封装 |
|
PWM |
2.2V-6V |
26V |
0.2V |
3A |
100uA |
800KHz |
PWM |
SOP-8 |
|||
|
PWM |
2.2V-6V |
27V |
0.2V |
3A |
100uA |
800KHz |
PWM |
DFN3*3-8 |
|||
|
PWM |
10V-35V |
200V |
0.2V |
扩流 |
400uA |
200KHz |
PWM |
SOP-8 |
|||
|
PWM |
3.6V-26V |
32V |
0.22V |
2A |
92% |
400KHz |
PWM |
SOP-8 |
|||
|
PWM |
3.6V-26V |
60V |
0.22V |
2A |
92% |
400KHz |
PWM |
SOP-8 |
|||
|
PWM |
5.0V-45V |
60V |
0.22V |
2A |
93% |
400KHz |
PWM |
SOP-8 |
|||
|
PWM |
3.6V-36V |
60V |
0.22V |
4A |
94% |
180KHz |
PWM |
TO252-5L |
|||
|
PWM |
5.0V-36V |
60V |
0.22V |
5A |
94% |
180KHz |
PWM |
TO263-5L |
|||
|
白灯背光驱动IC>>>同步升压白灯背光驱动IC |
|||||||||||
|
型号 |
工作模式 |
工作电 压范围 |
过压 保护电压 |
反馈电压 |
开关 电流限制 |
效率 |
静态电流 |
工作频率 |
调光形式 |
调光频 率范围 |
封装 |
|
PWM |
2.7V-16V |
36V |
0.2V |
340mA |
81% |
3.2uA |
1.2MHz |
PWM |
SOT-26 |
||
