CAT3661:LED Driver, 1 Channel, with Diagnostics
The CAT3661 is a high efficiency low power quad-mode fractional charge pump that drives one LED with up to 5 mA of current. Soft-start current limiting and short-circuit protection are optimized for use with coin cell batteries. Low noise input ripple and constant switching frequency allows the use of small external ceramic capacitors. This makes the CAT3661 ideal for EMI sensitive applications. The quad-mode charge pump supports a wide range of input voltages from 2.0 V to 5.5 V. The CAT3661 has a built-in circuitry to provide feedback to a microcontroller of Open/Short LED and Low battery events. The Low battery indicator trip point is internally fixed at 2.4 V. External resistors can be added to raise or lower the trip voltage, if needed. The device is packaged in the tiny 16-lead TQFN 3 mm x 3 mm package with a max height of 0.8 mm. The inclusion of a 1.33x fractional charge pump mode increases device efficiency by up to 10% over traditional 1.5x tri-mode charge pumps with no added external capacitors.
技术特性
- QuadMode Charge Pump: 1x, 1.33x, 1.5x, 2x
- Higher efficiency charge pump than competition, very compact solution, no inductor.
- Drives One LED up to 5 mA
- Optimized for Coin Cell Battery Operation
- Open/Short LED Fault Detection
- Adjustable Low Battery Detection
- Power Efficiency up to 92%
- Low Noise Input Ripple in All Modes
- Zero Current Shutdown Mode
- Soft Start and Short Circuit Current Limiting
- Thermal Shutdown Protection
- Low Quiescent Current 150 A Typical
- High efficiency LED driver even at low LED current below 5mA.
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应用
- Low Power LCD Display Backlight
- Low Power Handheld Device Backlight
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 |
| CAT3661HV3-GT2 |
Active |
|
LED Driver, 1 Channel, with Diagnostics |
TQFN-16 |
510AD |
1 |
Tape and Reel |
2000 |
$0.8666 |
数据资料DataSheet下载
