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CXAC85183升压型DC/DC转换器驱动带有恒流锂离子电池中串联驱动两个至五个LED串联提供相同的LED电流产生均匀的亮1MHz的频率切换
| 产品型号： | CXAC85183 |
| 产品类型： | AC-DC转换 |
| 产品系列： | PWM控制功率转换器 |
| 产品状态： | 量产 |
| 浏览次数： | 43 次 |
产品简介
固有匹配LED电流。
高效：85%典型。
从3.0V电源最多驱动四个LED。
从3.6V电源最多驱动六个LED。
快速1MHz开关频率。
使用1毫米高的微型感应器。
只需要1μF的输出电容。
低调的SOT-23-5L包装。
100%无铅。
技术参数
| 输入电压范围 (VIN) | V ~ 2.7~4.5VV |
|---|---|
| 输出电压 (VOUT) | ADJV |
| 输出电流 (IOUT) | 2.5AA |
| 工作频率 | 1MHZHz |
| 转换效率 | 95%% |
| 封装类型 | SOT23-6? |
| Solution type | PWM控制功率转换器 |
| Max power | 2.5A |
| Protection | OVP/OCP/短路保护 |
| Application | AC-DC转换器 |
| Mos管 | 内置MOS |
| 精度 | ±3% |
| 功耗 | 100uA |
| Topology type | PWM控制 |
| MODE Flyback | PWM |
| Operating temp | -40℃~85℃ |
| Features | AC/DC PWM Controller |
| Pf value | >0.9 |
| Vfb | 0.1V |
产品详细介绍
目录
7.相关产品
产品概述 返回TOP
The CXAC85183 is a step-up DC/DC converter specifically designed to drive white LEDs with a
constant current. The device can drive two, three,four, or five LEDs in series from a Li-Ion cell.
Series connection of the LEDs provides identical LED current resulting in uniform brightness and
eliminating the need for ballast resistors. The CXAC85183 switches at 1MHz, allowing the use of any
tiny external components. The output capacitor can be as small as 1μF, saving space and cost
versus alternative solutions. A low 95mV feedback voltage minimizes power loss in the current setting resistor for better efficiency.
CXAC85183 is available in low profile SOT-23-5L package.
产品特点 返回TOP
Inherently Matched LED Current.
High Efficiency: 85% Typical.
Drives Up to Four LEDs from a 3.0V Supply.
Drives Up to Six LEDs from a 3.6V Supply.
Fast 1MHz Switching Frequency.
Uses Tiny 1mm Tall Inductors.
Requires Only 1μF Output Capacitor.
Low Profile SOT-23-5L Packaging.
100% Lead (Pb)-Free.
应用范围 返回TOP
Cellular Phones
PDAs, Handheld Computuers
Digital Camera
MP3 Players
GPS Receivers
技术规格书（产品PDF) 返回TOP
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！
产品封装图 返回TOP
电路原理图 返回TOP
相关芯片选择指南 返回TOP 更多同类产品.....
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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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