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参数资料
| 型号： | MAX6946ATE+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 9/24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： | 400kHz |
| 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 |
10-Port, Constant-Current LED Driver and
I/O Expander with PWM Intensity Control
I/O Ports
The MAX6946/MAX6947 contain 10 I/O ports.
Configure the 10 I/O ports as logic inputs, open-drain
logic outputs, or constant-current sinks in any combina-
tion. Table 4 shows a detailed description of the indi-
vidual port configuration registers 0x00 through 0x09.
Use registers 0x00–0x09 to individually assign each
port as a logic input, open-drain logic output or con-
stant-current sink (see the PWM Intensity Control and
Phasing section). The I/O ports are high impedance
without V DD applied and remain high impedance upon
power-up.
Figure 1 shows the I/O port structure of the MAX6946/
MAX6947. I/O ports P0 to P9 default to high impedance
on power-up, so LEDs or other port loads connected
draw no current. Ports used as inputs do not load their
source signals.
I/O PORT
8-BIT LATCH
OUTPUT PORT
REGISTER
POSITION A: 0x00–0x01
POSITION B: 0x02–0xFF
CLOSE SWITCH: 0x02–0xFE
PWM
GENERATOR
ENABLE
A
B
TO/FROM
SERIAL
1-BIT LATCH
OUTPUT CURRENT
REGISTER
MSB
SET
CURRENT
N
INTERFACE
4-BIT DAC
3-BIT LATCH
GLOBAL CURRENT
REGISTER
READ I/O
PORT COMMAND
Figure 1. Simplified Schematic of I/O Ports
Table 4. Individual Port Configuration Options (Port Output Registers 0x00–0x09)
PORT TYPE
OUTPUT
REGISTER
CODE
RUN MODE (CONFIGURATION
REGISTER BIT D0 = 1)
SHUTDOWN
(CONFIGURATION REGISTER
BIT D0 = 0)
APPLICATION NOTES
Low-logic
output
0x00
Logic-low output, not constant current
High-logic
output
Logic input
Constant-
current static
sink output
0x01
0x02
Logic-high output with external pullup resistor;
otherwise, high impedance
CMOS logic input
Static constant-current sink
output
Lowest supply current,
unaffected by shutdown
Full constant-current drive
with no PWM
High impedance
Constant-
current PWM
output
LED off
0x03–0xFE
0xFF
0x03 = 3/256 PWM duty cycle
0xFE = 254/256 PWM duty cycle
Logic-high output with external pullup resistor; otherwise,
high impedance
Adjustable constant current
LED off
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6946CAWE+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX6946CAWE+T | 功能描述:LED照明驱动器 10-Port 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 |
| MAX6946EVCMAXQU+ | 功能描述:LED 照明开发工具 MAX6946 Evaluation Kit/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: |
| MAX6946EVKIT | 功能描述:LED 照明开发工具 10-Port Constant-Current LED Driver and I/O Expander with PWM Intensity Control 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: |
| MAX6946EVKIT+ | 功能描述:LED 照明开发工具 MAX6946 Evaluation Kit/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: |
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