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| 型号： | LDS8869-002-T2 |
| 厂商： | IXYS |
| 文件页数： | 1/14页 |
| 文件大小： | 0K |
| 描述： | IC LED DVR WHT/CLR BCKLGT 16WQFN |
| 标准包装： | 1 |
| 系列： | PowerLite™ |
| 拓扑： | 线性（LDO），切换式电容器（充电泵） |
| 输出数： | 6 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 1.1MHz |
| 电源电压： | 2.7 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 85°C |
| 其它名称： | LDS8869-002-T2-6 |
LDS8869
6-Channel Ultra Low Dropout LED Driver
FEATURES
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Charge pump modes: 1x, 1.33x, 1.5x, 2x
Ultra low dropout PowerLite ? Current
Regulator*
Drives up to 6 LEDs at 32mA each
1-wire LED current programming
Power efficiency up to 94%
Low input noise & ripple in all charge pump
modes
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Low current shutdown mode
Short circuit current limiting
Thermal shutdown protection
Available in 3 x 3 x 0.8 mm 16-pin TQFN
package
device’s efficiency up to 94%. New mode requires no
additional external capacitors.
The EN/SET logic input functions as a chip enable
and a current setting interface.
APPLICATION
The LEDs current is programmable by one wire
digital interface from 0.5 to 32mA in 0.5mA steps or
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Keypad and Display Backlight
Cellular Phones
Digital Still Cameras
PDAs and Smartphones
from zero to 3.75mA in 0.25mA steps. Every LED
bank with two LEDs each may be turned on/off or
programmed separately
Low noise input ripple is achieved by operating at a
constant switching frequency which allows the use of
DESCRIPTION
The LDS8869 is a high efficiency multi-mode
fractional charge pump with ultra low dropout voltage
that can drive up to six LEDs. Inclusion of a 1.33x
fractional charge pump mode and ultra low dropout
PowerLite ? Current Regulator (PCR) increases
TYPICAL APPLICATION CIRCUIT
small external ceramic capacitors. The multi-
fractional charge pump supports a wide range of
input voltages from 2.7V to 5.5V.
The device is available in in 16-lead TQFN 3 mm x 3
mm package with a max height of 0.8 mm.
? 2009 IXIS Corp.
Characteristics subject to change without notice
1
Doc. No. 8869_DS, Rev. N2.1
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