CAT3647:LED Driver, Quad-Mode®, 3-Channel
The CAT3647 is a high efficiency Quad-Mode fractional charge pump that can drive up to four LEDs programmable by a one wire digital interface. The inclusion of a 1.33x fractional charge pump mode increases device efficiency by up to 10% over traditional 1.5x charge pumps with no added external capacitors. Low noise input ripple is achieved by operating at a constant switching frequency which allows the use of small external ceramic capacitors. The multi-fractional charge pump supports a wide range of input voltages from 2.5 V to 5.5 V. The EN/DIM logic input functions as a chip enable and a digital dimming interface for current setting of all LEDs. Six different current ratios are available via the interface.
技术特性
- High efficiency 1.33x charge pump
- Quad-mode charge pump: 1x, 1.33x, 1.5x, 2x
- Drives up to 6 LEDs at 32 mA each
- 1-wire EZDim™ LED current programming
- Power efficiency up to 92%
- Low noise input ripple in all modes
- “Zero” current shutdown mode
- Soft start and current limiting
- Short circuit protection
- Thermal shutdown protection
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应用
终端产品
- Mobile Phones
- Digital Still Cameras
封装图 PACKAGE DIMENSIONS
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订购信息 Ordering Information
| 产品 |
状况 |
Compliance |
具体说明 |
封装 |
MSL* |
容器 |
预算价格 (1千个数量的单价） |
| 类型 |
外形 |
类型 |
数量 |
| CAT3647HV3-GT2 |
Active |
|
LED Driver, Quad-Mode®, 3-Channel |
TQFN-16 |
510AD |
1 |
Tape and Reel |
2000 |
$0.5067 |
数据资料DataSheet下载
