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参数资料
| 型号： | MAX6975ATL+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 18/23页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER LINEAR 40-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 拓扑： | PWM |
| 输出数： | 24 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 通用 |
| 类型 - 次要： | RGB |
| 频率： | 33MHz |
| 电源电压： | 3 V ~ 3.6 V |
| 输出电压： | 7V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 供应商设备封装： | 40-TQFN-EP（6x6） |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 125°C |
24-Output PWM LED Drivers
for Message Boards
Data Segment
The bit length of the data segment received by the
MAX6974/MAX6975 is dependent on the command
specified in the header.
The load CALDAC command has three unique data
bytes, while load global-intensity PDM and load
configuration each have one byte of data repeated
three times. The CALDAC data within the command
load CALDAC is sent with B CALDAC data first, fol-
lowed by G CALDAC data, and then R CALDAC data,
as shown in Table 8.
The data segment of the load individual PWM command
has a variable length depending on specific device and
configuration settings. The data is always organized
Table 8. Serial Format for Load CALDAC
as B driver data first in the order of B7 first to B0 last
(MSB first), followed by the G driver data in the same
order of G7 to G0 (MSB first), and then the R driver data
in the order of R7 to R0 (MSB first).
Tail Segment
The MAX6974/MAX6975 allow for an optional string of
data bits to be transmitted following all device data
bits, which is referred to as the tail segment. The data
bits of the tail segment are clocked back to the host,
following the header, from the last device in a cascaded
chain. The number of bits in the tail segment is optional.
The tail carries no device-specific data on DIN, but
provides feedback confirmation to the host that all data
bits were extracted by all devices in the cascade chain.
HEADER
HDR[23:0]
DATA 1
B[7:0] G[7:0] R[7:0]
DATA 2
B[7:0] G[7:0] R[7:0]
DATA 3
B[7:0] G[7:0] R[7:0]
…
…
DATA N
B[7:0] G[7:0] R[7:0]
B[7:0]
G[7:0]
R[7:0]
N
8-bit data loaded into port B CALDAC
8-bit data loaded into port G CALDAC
8-bit data loaded into port R CALDAC
Number of cascaded devices
Table 9. Serial Format for Load Global-Intensity PDM
HEADER
HDR[23:0]
DATA 1
D[7:0] D[7:0] D[7:0]
DATA 2
D[7:0] D[7:0] D[7:0]
DATA 3
D[7:0] D[7:0] D[7:0]
…
…
DATA N
D[7:0] D[7:0] D[7:0]
D[7:0]
Send the 8-bit data for the global-intensity PDM three times (24 total bits)
Table 10. Serial Format for Load Configuration
HEADER
HDR[23:0]
DATA 1
D[7:0] D[7:0] D[7:0]
DATA 2
D[7:0] D[7:0] D[7:0]
DATA 3
D[7:0] D[7:0] D[7:0]
…
…
DATA N
D[7:0] D[7:0] D[7:0]
D[7:0]
Send the 8-bit configuration data three times (24 total bits)
Table 11. Serial Format for Load Individual PWM (Nonmultiplexed)
HEADER
HDR[23:0]
DATA 1
B7, B6, …R0
DATA 2
B7, B6, …R0
DATA 3
B7, B6, …R0
…
…
DATA N
B7…R0
B_…G_…R_
12-bit (MAX6974) or 14-bit (MAX6975) data each
Table 12. Serial Format for Load Individual PWM (Multiplexed)
HEADER
HDR[23:0]
DATA 1
B7, B7', B6, B6', …R0'
DATA 2
B7, B7', B6, B6', …R0'
DATA 3
B7, B7', B6, B6', …R0'
…
…
DATA N
B7, B7', B6, B6', …R0'
B_
B_'
G_
G_'
R_
R_'
18
12-bit (MAX6974) or 14-bit (MAX6975) PWM data for each output B_ during multiplex phase MUX0 , MSB first
12-bit (MAX6974) or 14-bit (MAX6975) PWM data for each output B_ during multiplex phase MUX1 , MSB first
12-bit (MAX6974) or 14-bit (MAX6975) PWM data for each output G_ during multiplex phase MUX0 , MSB first
12-bit (MAX6974) or 14-bit (MAX6975) PWM data for each output G_ during multiplex phase MUX1 , MSB first
12-bit (MAX6974) or 14-bit (MAX6975) PWM data for each output R_ during multiplex phase MUX0 , MSB first
12-bit (MAX6974) or 14-bit (MAX6975) PWM data for each output R_ during multiplex phase MUX1 , MSB first
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相关代理商/技术参数 |
参数描述 |
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| MAX6977AAE | 功能描述:LED显示驱动器 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 |
| MAX6977AAE+ | 功能描述:LED照明驱动器 8-Port 5.5V Constant Current LED Driver RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| MAX6977AAE+T | 功能描述:LED照明驱动器 8-Port 5.5V Constant Current LED Driver RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| MAX6977AAE-T | 功能描述:LED显示驱动器 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 |
| MAX6977AEE | 制造商:Maxim Integrated Products 功能描述:8-PORT, 5.5V CONSTANT-CURRENT LED DRIVER WITH - Rail/Tube |
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