CXLE8166是一个电流模式和固定频率600kHz升压转换器，集成了N-FET来驱动白色led。串联允许LED电流相同，亮度均匀。它的低导通电阻和低反馈电压降低了功率损耗，实现了高效率。600kHz恒定开关频率允许使用小尺寸电感和输入输出电容。过电压保护功能通过LX引脚监测输出电压，如果LX电压超过过电压阈值，则停止IC的切换。内部软启动电路消除启动过程中的浪涌电流。CXLE8166还集成了欠压锁定和过温保护，以在异常情况下保护IC
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[ CXLE8166 ]
目录
7.相关产品
产品概述 返回TOP
The CXLE8166 is a current-mode and fixed frequency 600kHz boost converter with an integrated N-FET to drive white LEDs. The series connection allows the LED current to be identical for uniform brightness. Its low on-resistance of NFET and low feedback voltage reduce power loss and achieve high efficiency. 600kHz Constant switching frequency allows using small-size inductor and both of input and output capacitors. An over voltage protection function, which monitors the output voltage via LX pin, stops switching of the IC if the LX voltage exceeds the over voltage threshold. An internal soft-start circuit eliminates the inrush current during start-up. The CXLE8166 also integrates under-voltage lockout and over-temperature protection to protect the IC in abnormal conditions. The CXLE8166 is available in TDFN2x2-6 package.
产品特点 返回TOP
· Wide Input Voltage from 2.7V to 6V
· Fixed 600kHz Switching Frequency
· Reference Voltage : 0.2V
· PWM brightness control with wide frequency range of 5KHz to 100KHz · Build-in Power MOSFET: 0.3W
· Over-Voltage Protection
· Under Voltage Lockout Protection
· Over Temperature Protection
·<1mA Quiescent Current during Shutdown
· TDFN2x2-6 Package
· Halogen and Lead Free Available (RoHS Compliant)
应用范围 返回TOP
· White LED Display Backlighting
· Cell Phone and Smart Phone
· PDA, PMP, MP3
· Digital Camera
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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Lighting and Display Product > White LED Driver |
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Part_No |
Topology |
Archi tecture |
Input Voltage (V) |
Adj. Output Voltage V |
No. of LEDs |
LED Current (Max) (A) |
Switch Current Limit (A) |
Current Sense Voltage (typ)(V) |
Switching Frequency (kHz) |
Dimming Control |
Package |
|
|
min |
max |
max |
||||||||||
|
Boost |
CM |
2.7 |
6 |
32 |
8 |
0.03 |
0.9 |
0.25 |
1000 |
Analog |
SOT23-6 |
|
|
Boost |
VM |
2.5 |
6 |
19 |
4 |
0.03 |
0.4 |
0.25 |
1000 |
Analog PWM |
SOT23-6 |
|
|
Boost |
CM |
2.7 |
21 |
30 |
8 |
0.6 |
3.5 |
0.5 |
1200 |
Analog |
DFN3x3-10 |
|
|
Charge Pump |
- |
2.8 |
4.5 |
- |
4 |
0.03 |
- |
- |
1000 |
Analog PWM Digital |
QFN4x4-16 |
|
|
Charge Pump |
- |
2.8 |
4.5 |
- |
6 |
0.03 |
- |
- |
1000 |
Analog PWM Digital |
QFN4x4-16 |
|
|
Charge Pump |
- |
2.8 |
4.5 |
- |
4 |
0.03 |
- |
- |
1000 |
Analog PWM Digital |
QFN3x3-16 |
|
|
Boost |
CM |
2.5 |
6 |
24 |
6 |
0.03 |
1.2 |
0.1 |
1000 |
Analog PWM |
SOT23-6 |
|
|
Boost |
CM |
2.5 |
6 |
39 |
10 |
0.03 |
0.9 |
0.3 |
1000 |
Analog PWM |
SOT23-6 |
|
|
Boost |
CM |
2.5 |
6 |
24 |
6 |
0.03 |
1.2 |
0.2 |
1000 |
Analog PWM |
SOT23-6 |
|
|
Boost |
CM |
2.5 |
6 |
40 |
10 |
0.03 |
1.5 |
0.2 |
600 |
Analog PWM |
TDFN2x2-6 |
|
|
Boost |
CM |
2.5 |
6 |
24 |
6 |
0.03 |
2 |
0.2 |
1500 |
Analog PWM |
SOT23-6 |
|
|
Buck |
CM |
3 |
5.5 |
- |
SOT23-5 |
|||||||
|
Boost |
CM |
6 |
24 |
65 |
17 |
0.18per string |
3.3 |
0.5 |
200 ~ 900 |
External PWM Dimming/I2C |
TDFN5x5-16 |
|
|
Boost |
CM |
2.7 |
6 |
40 |
10 |
0.03 |
1.5 |
0.2 |
600 |
Analog PWM |
TDFN2x2-6 |
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