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参数资料
| 型号： | MAX16826ATJ+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 18/26页 |
| 文件大小： | 0K |
| 描述： | IC LED DVR HB PROGR 32TQFN-EP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 恒定电流： | 是 |
| 拓扑： | PWM，SEPIC，升压（升压） |
| 输出数： | 4 |
| 内部驱动器： | 无 |
| 类型 - 主要： | 车载，背光 |
| 类型 - 次要： | 高亮度 LED（HBLED），RGB，白色 LED |
| 频率： | 100kHz ~ 1MHz |
| 电源电压： | 4.75 V ~ 24 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-TQFN-EP |
| 包装： | 托盘 |
| 工作温度： | -40°C ~ 125°C |
MAX16826
Programmable, Four-String HB LED Driver with
Output-Voltage Optimization and Fault Detection
I 2 C is an open-drain bus. Both SDA and SCL are bidi-
rectional lines, connected to a positive supply voltage
using a pullup resistor. They both have Schmitt triggers
and filter circuits to suppress noise spikes on the bus to
ensure proper device operation.
A bus master initiates communication with the
MAX16826 as a slave device by issuing a START con-
dition followed by the MAX16826 address. The
MAX16826 address byte consists of 7 address bits and
a read/write bit (R/ W ). After receiving the proper
address, the MAX16826 issues an acknowledge bit by
pulling SDA low during the ninth clock cycle.
START and STOP Conditions
Both SCL and SDA remain high when the bus is not
busy. The master signals the beginning of a transmis-
sion with a START (S) condition by transitioning SDA
from high to low while SCL is high. When the master
has finished communicating with the MAX16826, it
issues a STOP (P) condition by transitioning SDA from
low to high while SCL is high. The bus is then free for
another transmission (Figure 4). Both START and STOP
conditions are generated by the bus master.
SCL
SDA
Bit Transfer
Each data bit, from the most significant bit to the least
significant bit, is transferred one by one during each
clock cycle. During data transfer, the SDA signal is
allowed to change only during the low period of the
SCL clock and it must remain stable during the high
period of the SCL clock (Figure 5).
Acknowledge
The acknowledge bit is used by the recipient to hand-
shake the receipt of each byte of data (Figure 6). After
data transfer, the master generates the acknowledge
clock pulse and the recipient pulls down the SDA line
during this acknowledge clock pulse, such that the
SDA line stays low during the high duration of the clock
pulse. When the master transmits the data to the
MAX16826, it releases the SDA line and the MAX16826
takes the control of SDA line and generates the
acknowledge bit. When SDA remains high during this
9th clock pulse, this is defined as the not acknowledge
signal. The master then generates either a STOP condi-
tion to abort the transfer, or a repeated START condi-
tion to start a new transfer.
START
CONDITION
(S)
DATA LINE STABLE
DATA VALID
DATA ALLOWED
TO CHANGE
STOP
CONDITION
(P)
Figure 5. Bit Transfer
START CONDITION
CLOCK PULSE FOR ACKNOWLEDGMENT
1
2
8
9
SCL
SDA
BY MASTER
S
SDA
BY SLAVE
Figure 6. Acknowledge
18
Maxim Integrated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16826ATJ/V+ | 制造商:Maxim Integrated Products 功能描述:PROGRAMMABLE, FOUR-STRING HB LED DRIVER WITH OUTPUT-VOLTAGE - Rail/Tube |
| MAX16826ATJ/V+T | 制造商:Maxim Integrated Products 功能描述:PROGRAMMABLE, FOUR-STRING HB LED DRIVER WITH OUTPUT-VOLTAGE - Tape and Reel |
| MAX16826ATJ/VY+ | 制造商:Maxim Integrated Products 功能描述:PROGRAMMABLE, FOUR-STRING HB LED DRIVER WITH OUTPUT-VOLTAGE - Rail/Tube |
| MAX16826ATJ/VY+T | 制造商:Maxim Integrated Products 功能描述:PROGRAMMABLE, FOUR-STRING HB LED DRIVER WITH OUTPUT-VOLTAGE - Tape and Reel |
| MAX16826ATJ+ | 功能描述:LED照明驱动器 Prog 4-String HB 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 |
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