参数资料
型号: LDS8160-002-T2
厂商: IXYS
文件页数: 6/39页
文件大小: 0K
描述: IC LED DVR WHT/RGB BCKLGT 16WQFN
标准包装: 1
系列: LED-Sense™, PowerLite™
拓扑: 线性(LDO),PWM
输出数: 6
内部驱动器:
类型 - 主要: 背光
类型 - 次要: RGB,白色 LED
频率: 1.2MHz
电源电压: 2.3 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: LDS8160-002-T2-6
LDS8160
WRITE INSTRUCTION SEQUENCE
Standard protocol:
Write Instruction Example - Setting 20mA Current in LEDB1 and LEDB2
REGISTER CONFIGURATION AND PROGRAMMING
ADDRESS
00h
01h
02h
DESCRIPTION
Bank A Current setting
Bank B Current setting
Bank C Current setting
BITS
8
8
8
NOTES
Reg00h – Reg02h data code = (I LED / 0.125 mA) (decimal)
converted into hex format
Bits 5:0 = 1 enables LEDs C2, C1, B2, B1, A2, A1 respectively
03h
Channel Enable
6
(See Table 1).
Both LEDs from one bank should be disabled to minimize
power consumption.
Log mode: (default)
Simultaneously decreases I LED in banks A – C by ~ – 0.17 dB
per step (256 steps).
Data Code 00h = 0 dB dimming, FEh = – 72 dB FFh = OFF
Example: 50% brightness reduction ( – 6dB) requires:
04h
Global PWM Dimming
8
– 6dB / – 0.17dB = 35 (decimal) = 23h steps
Linear Mode:
Simultaneously decreases I LED in banks A – C by subtracting
Global Dimming Code (Reg04h data) from PWM Duty Cycle
Code (Reg05h – Reg07h data)
Data Code 00h = 0 dimming, If Global Dimming Code is equal
or exceeds PWM Duty Cycle Code, I LED = 0 mA.
05h
06h
Bank A PWM Duty Cycle
Bank B PWM Duty Cycle
8
8
Log Mode: (default):
~ – 0.17dB dimming per LSB for < 98% Dimming Level (i.e. >
2% Duty Cycle) from full scale;
Refer to 8 to 12 bit conversion curve (Figure 3 and Table
A4.1) for resolution in range 100% to 98% Dimming Level
(i.e. 0% to 2% Duty Cycle).
Data Code 00h = 0% Duty Cycle or 100% Dimming Level,
07h
Bank C PWM Duty Cycle
8
FFh = 100% Duty Cycle or 0% Dimming Level
Example: 50% brightness reduction ( – 6dB) requires: 255 –
(– 6 dB / – 0.17 dB) = 255 – 35 = 220 (decimal) = DCh steps
Linear Mode:
PWM Duty Cycle resolution ~ 0.39% per LSB
Code 00h = 0% Duty Cycle, FFh = 100% Duty Cycle
? 2009 IXYS Corp.
Characteristics subject to change without notice
6
Doc. No. 8160_DS, Rev. N1.0
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