CAT3626:LED Driver, Charge Pump, 6-Channel, I2C
The CAT3626 is a high efficiency 1x/1.5x fractional charge pump with programmable dimming current in six LED channels. To ensure uniform brightness in LCD backlight applications, each LED channel delivers an accurate regulated current. Low noise and input ripple is achieved by operating at a constant switching frequency of 1MHz which allows the use of small external ceramic capacitors. The 1x/1.5x fractional charge pump supports a wide range of input voltages from 3V to 5.5V with efficiency up to 91%, and is ideal for Li-Ion battery powered devices. The LED channels are configured into three independent pairs, each containing 2 matched channels. Each pair can be separately programmed from zero to 32 mA, in 0.5 mA resolution steps, using the I2C serial interface. Any individual channel can be disabled while others remain active. When the enable input (EN) is low, the device is in shutdown mode drawing zero current.
技术特性
- 6 LED channels with tight matching
- Independent Main and Sub channels
- 1-wire EZDim™ Programmable LED Current
- Accurate 1 mA Dimming Level
- Power efficiency up to 91%
- Fractional pump 1x/1.5x
- Low noise input ripple
- Fixed High Frequency Operation 1MHz
- “Zero” Current Shutdown Mode
- Soft start and current limiting
- Short circuit protection
- Thermal shutdown protection
|
应用
- RGB LEDs
- LCD and keypad Backlighting
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 |
| CAT3626HV4-GT2 |
Active |
| AEC Qualified |
| PPAP Capable |
| Pb-free |
| Halide free |
|
LED Driver, Charge Pump, 6-Channel, I2C |
WDFN-6 |
511BR |
1 |
Tape and Reel |
2000 |
0.72 |
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