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参数资料
| 型号： | LDS8161-002-T2 |
| 厂商： | IXYS |
| 文件页数： | 1/22页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER WHIT BCKLGT 16WQFN |
| 标准包装： | 1 |
| 系列： | LED-Sense™, PowerLite™ |
| 拓扑： | 高端，线性（LDO），PWM |
| 输出数： | 6 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 白色 LED |
| 电源电压： | 2.5 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： | LDS8161-002-T2-6 |
LDS8161/41
6-Channel / 4-Channel High-Side Linear WLED Driver
with LED Temperature Compensation Using LED-Sense TM , I 2 C, and Digital PWM
FEATURES
?
Six (8161) / or Four (8141) Power-Lite
TM
Linear LDO
current regulators with 50 mV dropout in a high-
LED-Sense
temperature compensation
I C compatible serial programming interface
LED current programmable via I C from 0 to
?
?
?
?
side driver topology.
High temperature LED current de-rating using the
TM
algorithm, which directly monitors an LED PN
junction. No external temperature sensor is
required.
2
2
~32 mA in 256 linear steps. Three (8161) or two
(8141) separately controlled driver banks with 2
LED drivers each
Integrated PWM generator for LED dimming with
12-bit resolution and 256 I 2 C-programmable
logarithmic duty cycle steps from 0% to 100%
The LDO drivers have a low dropout voltage of
The
proprietary
LED-Sense
temperature
?
?
?
?
?
?
?
?
(~0.17 dB per step)
Total combined dimming range of > 16,384:1
Power efficiency up to 98%; average efficiency
> 80% in Li-ion battery applications
Low current shutdown mode ( < 1 μA );
Soft start and current limiting
LED Short circuit detection and protection, LED
open detection
Thermal shutdown protection
Low EMI.
Available in 3 mm x 3 mm x 0.8 mm 16-pin TQFN
package
50 mV typically at maximum rated current. This
provides a low power/low EMI solution in Li-ion
battery applications without voltage boosting and
associated external capacitors and components.
High temperature current de-rating insures LED
reliability and provides automatic adjustment of LED
current to achieve maximum specified LED
brightness across the ambient temperature range.
TM
compensation algorithm directly monitors the junction
temperature of an LED and applies current de-rating
programmable via the I C serial interface from 0% to
LDS8161/LDS8141
to
respond to I C
APPLICATIONS
? Keypad and Display Backlight
? Cellular Phone
? PDAs and Smartphones
DESCRIPTION
The LDS8161 is a 6-channel and the LDS8141 is a 4-
channel linear LED driver for WLED applications. It
includes ultra low dropout LDO current regulators at a
maximum 31.875 mA per channel in a common
cathode high side driver topology.
The LDS8161/LDS8141 has an average efficiency of
> 80% in Li-ion battery applications. It includes three
(LDS8161) or two (LDS8141) 8-bit current setting
DACs (one per bank) allowing LED currents to be
per a user loadable LUT (look up table) in 5oC steps.
No external temperature sensing device is needed.
An integrated 12-bit PWM generator with “smooth”
logarithmic control supports LED dimming and high
temperature current de-rating. The PWM duty cycle is
2
100%. User programmed 8-bit codes are converted
to 12-bit resolution logarithmic steps of ~ 0.17 dB per
step. The PWM frequency is ~280 Hz to minimize
noise generation.
The EN logic input functions as a chip enable. A logic
HIGH applied at the EN pin allows the
2
communications. An external serial interface address
pin is available for use in multi-target applications.
The device operates from 2.5V to 5.5V.
programmed via an I C-compatible serial interface
2
from 0 to 31.875 mA in 256 steps of 125 ? A per step.
The LDS8160 is available in a 3 x 3 x 0.8 mm
16-lead TQFN package.
3
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| LDS8621002-T2-960 | 功能描述:IC LED DRIVER FLASH 16WQFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:PowerLite™ 标准包装:60 系列:- 恒定电流:- 恒定电压:- 拓扑:线性（LDO），PWM，升压（升压） 输出数:8 内部驱动器:是 类型 - 主要:背光 类型 - 次要:RGB，白色 LED 频率:500kHz ~ 1.5MHz 电源电压:4.75 V ~ 26 V 输出电压:45V 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* 工作温度:-40°C ~ 85°C |
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