The CXAC85182 is a step-up converter designed for driving up to 8 series white LEDs for backlighting application. The CXAC85182 uses current mode, 1.2MHZ fixed frequency architecture to regulate the LED current, which is set through an external current sense resistor. Its low 300mV feedback voltage reduces power loss and improves efficiency. The OV pin monitors the output voltage and turns off the converter if an over-voltage condition is present due to an open circuit condition
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[ CXAC85182 ]"
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产品概述 返回TOP
The CXAC85182 is a step-up converter designed for driving up to 8 series white LEDs for backlighting application. The CXAC85182 uses current mode, 1.2MHZ fixed frequency architecture to regulate the LED current, which is set through an external current sense resistor. Its low 300mV feedback voltage reduces power loss and improves efficiency. The OV pin monitors the output voltage and turns off the converter if an over-voltage condition is present due to an open circuit condition. The CXAC85182 includes under-voltage lockout, current limiting and thermal shutdown protection preventing damage in the event of an output overload. The driver is available in small 6-pin SOT-23 package.
产品特点 返回TOP
2.5V to 5.5V operating input voltage range
Drives up to 8 series White LEDs
1.2MHz Fixed Switching Frequency
Wide range for PWM dimming (200Hz to 200KHz)
Internal 1.9A switching current limit
Over Voltage Protection (OVP)
Internal Soft-start Function
Current limit and Thermal shutdown protection
Under voltage Lockout
Available in the 6-pin SOT-23 Package
应用范围 返回TOP
Camera Flash White LED
Mobile Phone, Smart Phone LED Backlight
PDA LED Backlight
Digital Still Cameras
Camcorder
技术规格书（产品PDF) 返回TOP
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产品封装图 返回TOP
电路原理图 返回TOP
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AC/DC PWM Controller |
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Product |
Status |
Device Description |
VIN(min~max) |
VOUT |
IOUT |
IQ(typ) |
Vfb |
Frequency |
Pkg |
|
Active |
1.9A固定频率白光驱动 |
2.5~5V |
3-27v |
1.9A |
170uA |
0.3V |
1.2MHZ |
SOT23-6 |
|
|
NRFED |
1A白光驱动 |
2.7~4.5V |
ADJ |
2.5A |
100uA |
0.1V |
1MHZ |
SOT23-6 |
|
|
NRFED |
450uA |
60KHZ |
420mA |
TO92 |
|||||
|
NRFED |
700uA |
40KHZ |
420mA |
SOT23-6 SOP8 |
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