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参数资料
| 型号： | MAX6966ATE+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 20/29页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER LINEAR 16-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 恒定电流： | 是 |
| 拓扑： | 开路漏极，PWM |
| 输出数： | 10 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | RGB，白色 LED |
| 频率： | 270kHz ~ 450kHz |
| 电源电压： | 2.25 V ~ 3.6 V |
| 输出电压： | 7V |
| 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（3x3） |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 125°C |
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MAX6966/MAX6967
10-Port Constant-Current LED Drivers and I/O
Expanders with PWM Intensity Control
Table 10. Ramp-Up Register Format
ADDRESS
REGISTER DATA
REGISTER
R/W
CODE
(HEX)
D7
D6
D5
D4
D3
D2
D1
D0
Write ramp-up
Read ramp-up
0
1
X
0
X
0
X
0
X
0
X
0
Ramp-up
Ramp-up time (f PWM = 32768Hz)
0x12
Instant full current coming out from shutdown
1/16s ramp-up to full current coming out from shutdown
1/8s ramp-up to full current coming out from shutdown
1/4s ramp-up to full current coming out from shutdown
1/2s ramp-up to full current coming out from shutdown
1s ramp-up to full current coming out from shutdown
2s ramp-up to full current coming out from shutdown
4s ramp-up to full current coming out from shutdown
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
Ramp-up and ramp-down use the PWM clock for timing.
If the external oscillator is selected, then this clock
should be provided until the end of the sequence. If the
internal oscillator is selected, it always runs during a
fade sequence, even if none of the ports are using PWM.
The ramp-up and ramp-down circuit operates a 3-bit
DAC. The DAC adjusts the internal current reference
used to set the constant-current outputs in a similar
manner to the global current register ( Table 8).
Because it is the master current reference that is
scaled, all output constant-current and PWM settings
CURRENT PORT CURRENT = FULL
are adjusted at the same ratio with respect to each
other. This means that LEDs are always faded at the
same rate even if their different intensity settings are
totally different. Figure 6 shows output fade DAC.
The maximum port output current set by the global cur-
rent register ( Table 8) also sets the point during ramp-
down that the current starts falling, and the point during
ramp-up that the current stops rising. Figure 7 shows
the ramp waveforms that occur with different global
current register settings.
CURRENT GLOBAL CURRENT = 0x07
20mA
20mA
17.5mA
15mA
12.5mA
17.5mA
15mA
12.5mA
GLOBAL CURRENT = 0x06
GLOBAL CURRENT = 0x05
GLOBAL CURRENT = 0x04
10mA
7.5mA
5mA
2.5mA
PORT CURRENT = HALF
10mA
7.5mA
5mA
2.5mA
GLOBAL CURRENT = 0x03
GLOBAL CURRENT = 0x02
GLOBAL CURRENT = 0x01
GLOBAL CURRENT = 0x00
0mA
FULL
CURRENT
7/8
CURRENT
6/8
CURRENT
5/8
CURRENT
4/8
CURRENT
3/8
CURRENT
2/8
CURRENT
1/8 ZERO
CURRENT CURRENT
0mA
FULL
7/8
6/8
5/8
4/8
3/8
2/8
1/8
ZERO
FADE-UP
CURRENT CURRENT CURRENT CURRENT CURRENT CURRENT CURRENT CURRENT CURRENT
FADE-OFF
FADE-UP
FADE-OFF
Figure 6. Output Fade DAC (Global Current = 0x07)
20
Figure 7. Global Current Modifies Fade Behavior
Maxim Integrated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6966EVCMAXQU | 功能描述:LED 照明开发工具 MAXIM EVALUATION SYSTEM RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装: |
| MAX6966EVKIT | 功能描述:LED 照明开发工具 Evaluation Kit/Evaluation System for the MAX6966 RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装: |
| MAX6967AEE | 功能描述:LED显示驱动器 10-Port Constant Current LED Driver RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| MAX6967AEE+ | 功能描述:LED显示驱动器 10-Port Constant Current LED Driver RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
| MAX6967AEE+T | 功能描述:LED显示驱动器 10-Port Constant Current LED Driver RoHS:否 制造商:Micrel 数位数量:5 片段数量: 安装风格:SMD/SMT 封装 / 箱体:PLCC-44 工作电源电压:4.75 V to 11 V 最大电源电流:10 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装:Tube |
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