CXUS65172

CXUS65172电荷泵驱动多达四个具有恒定电流的白色LED,以获得均匀的强度。利用动态1x/2x电荷泵模式和超低漏电流调节器,在单电池锂电池输入电压范围内实现高效率。250kHz的固定频率开关允许微小的外部组件,并且优化了调节方案以确保低EMI和低输入纹波。CXUS65172使用一个单线EN/亮度控制来启用、禁用和设置LED电流,16个线性阶梯降到100μa。一旦设置了所需的LED亮度,只要EN引脚保持高,CXUS65172就保持恒定的LED电流。如果EN引脚保持低90μs,则CXUS65172进入关机状态。还包括短路、过电压和热保护。启动软启动以减少通电和泵模式转换期间的涌入电流

CXUS65172电荷泵驱动四个恒定电流白色LED超低漏电流调节器250kHz固定频率开关单电池锂电池输入电压高效率

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1.产品概述       2.产品特点     xhv嘉泰姆

3.应用范围       4.技术规格书下载(PDF文档)xhv嘉泰姆

5.产品封装       6.电路原理图  xhv嘉泰姆

7.相关产品xhv嘉泰姆

   产品概述 返回TOPxhv嘉泰姆


The CXUS65172 charge pump drives up to four white LEDs with regulated constant current for uniform intensity. By utilizing dynamic 1x/2x charge-pump modes and ultra-low-dropout current regulators, it achieves high efficiency over the 1-cell lithium battery input voltage range. The 250kHz fixed frequency switching allows for tiny external components, and the regulation scheme is optimized to ensure low EMI and low input ripple. The CXUS65172 uses a single wire EN/Brightness control to enable, disable, and set the LED current with 16-linear steps down to 100μA. Once the desired LED brightness is set, the CXUS65172 maintains constant LED current as long as EN pin is kept high. If EN pin kept low for 90μs, the CXUS65172 enters shutdown. The short-circuit, over-voltage, and thermal protection are also included. The soft start is enabled to reduce the inrush current during power on and pump mode transformed.

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Dynamic 1x/2x Charge Pump Switching xhv嘉泰姆

„ Up to 80mA (20mA/LED) Drive Capability xhv嘉泰姆

„ 90% Average Efficiency xhv嘉泰姆

„ 0.5% (TYP) LED Current Matching xhv嘉泰姆

„ Wide Current Range per LED [0.1mA ~ 20mA] xhv嘉泰姆

„ Single Wire EN/Brightness Control xhv嘉泰姆

„ 2.7V to 5.5V Supply Voltage Range xhv嘉泰姆

„ < 1μA Shutdown Current xhv嘉泰姆

„ Output Over-voltage Protection xhv嘉泰姆

„ Open/Short LED Protection xhv嘉泰姆

„ Thermal Shutdown Protection xhv嘉泰姆

„ TDFN2.5X2.5-10 and TQFN3X3-16 Packagexhv嘉泰姆

   应用范围 返回TOPxhv嘉泰姆


„ Mobile Phones xhv嘉泰姆

„ White LED Backlighting xhv嘉泰姆

„ Camera Flash LED Lightingxhv嘉泰姆

   技术规格书(产品PDF) 返回TOP xhv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xhv嘉泰姆

 QQ截图20160419174301.jpgxhv嘉泰姆

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image.pngxhv嘉泰姆

电路原理图 返回TOPxhv嘉泰姆


image.pngxhv嘉泰姆

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Charge   Pump and Current Sourcexhv嘉泰姆

Part   NO.xhv嘉泰姆

Vin(V)xhv嘉泰姆

min.xhv嘉泰姆

Vin(V)xhv嘉泰姆

max.xhv嘉泰姆

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(mA)xhv嘉泰姆

FOSCxhv嘉泰姆

(kHz)xhv嘉泰姆

VOUTxhv嘉泰姆

(V)xhv嘉泰姆

LED xhv嘉泰姆

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Eff.xhv嘉泰姆

(%)xhv嘉泰姆

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CXUS65171xhv嘉泰姆

3xhv嘉泰姆

5.5xhv嘉泰姆

600xhv嘉泰姆

250xhv嘉泰姆

1x/2xxhv嘉泰姆

1xhv嘉泰姆

--xhv嘉泰姆

Flash LEDdriver,Flash/Torch/SHDNxhv嘉泰姆

TDFN3X3-10xhv嘉泰姆

CXUS65172xhv嘉泰姆

2.7xhv嘉泰姆

5.5xhv嘉泰姆

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250xhv嘉泰姆

1x/2xxhv嘉泰姆

4xhv嘉泰姆

90xhv嘉泰姆

4-CH LED in Parallel,PWM control16 xhv嘉泰姆

levels dimming controlxhv嘉泰姆

TDFN2.5X2.5-10xhv嘉泰姆

TQFN3X3-16xhv嘉泰姆

CXUS65173xhv嘉泰姆

2.7xhv嘉泰姆

5xhv嘉泰姆

90xhv嘉泰姆

1000xhv嘉泰姆

4.5/5xhv嘉泰姆

--xhv嘉泰姆

88xhv嘉泰姆

EN,GND,VOUT,C+,VIN,C-,Boostxhv嘉泰姆

TSOT-23-6/TDFN2X2-6xhv嘉泰姆

CXUS65174xhv嘉泰姆

1.8xhv嘉泰姆

5xhv嘉泰姆

60xhv嘉泰姆

270xhv嘉泰姆

-VINxhv嘉泰姆

--xhv嘉泰姆

90xhv嘉泰姆

IN,EN,GND,C-,C+,OUT,Invertingxhv嘉泰姆

SOT-23-6/TDFN2X2-6xhv嘉泰姆

CXUS65175xhv嘉泰姆

1.8xhv嘉泰姆

5xhv嘉泰姆

60xhv嘉泰姆

270xhv嘉泰姆

-VINxhv嘉泰姆

--xhv嘉泰姆

90xhv嘉泰姆

NC,CP+,GND,CP-,OUT,NC,NC,INxhv嘉泰姆

SOP-8xhv嘉泰姆

CXUS65176xhv嘉泰姆

8xhv嘉泰姆

24xhv嘉泰姆

10xhv嘉泰姆

350xhv嘉泰姆

1.5xxhv嘉泰姆

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PG,D_CAPxhv嘉泰姆

MSOP-8xhv嘉泰姆

CXUS65177xhv嘉泰姆

8xhv嘉泰姆

24xhv嘉泰姆

10xhv嘉泰姆

370xhv嘉泰姆

1.5xxhv嘉泰姆

--xhv嘉泰姆

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PG,D_CAP,12V,ONx,DRIVERxxhv嘉泰姆

TQFN3X3-20xhv嘉泰姆

CXUS65178xhv嘉泰姆

4.5xhv嘉泰姆

5.5xhv嘉泰姆

14xhv嘉泰姆

--xhv嘉泰姆

2xxhv嘉泰姆

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2-NMOSFET driver,20mA dischargingxhv嘉泰姆

TQFN3X3-20xhv嘉泰姆

◀ 上一篇:700毫安驱动电流CXUS65171照相机闪光灯大电流白光LED驱动的电荷泵电感式DC调节器降低输出纹波低EMI解决方案火炬模式连续输出20%的闪光模式电流

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