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参数资料
| 型号： | MAX16816ATJ+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 26/33页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVR HIGH BRIGHT 32-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 拓扑： | PWM，SEPIC，降压（降压），升压（升压） |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 车载 |
| 类型 - 次要： | 高亮度 LED（HBLED） |
| 频率： | 125kHz ~ 500kHz |
| 电源电压： | 5.5 V ~ 76 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（5x5） |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 125°C |
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Programmable Switch-Mode LED Driver
with Analog-Controlled PWM Dimming
Programming Sequences
The μC (master) starts the communication with the
MAX16816 by pulling UVEN high. The MAX16816 then
does the handshaking with the μC by pulling FAULT low.
Once the μC receives the handshaking signal, it begins
the initialization sequences to reset the 1-Wire interface.
The sequence consists of a reset pulse from the μC fol-
lowed by a presence pulse from the MAX16816. At this
point the μC must send PASS_CODE_ONE and
PASS_CODE_TWO. These pass codes must be received
by the MAX16816 within the 8ms programming slot to
allow the MAX16816 to enter the EE programming mode.
1-Wire Signaling
The MAX16816 requires strict protocols to ensure data
integrity. The protocol consists of four types of signal-
ing on one line: reset sequence with Reset Pulse and
Presence Pulse, Write-Zero, Write-One, and Read-Data.
Except for the Presence Pulse, the bus master initiates
all falling edges.
Externally pull FAULT below V IL to indicate a logic-input
low. Release the pulldown device to indicate a logic-
input high. The MAX16816 will pull FAULT low below
V OL to indicate a logic-output low. FAULT is pulled high
with an internal 10k Ω resistor above V OH to indicate a
logic-output high.
MASTER Tx "RESET PULSE"
Initialization Procedure
(Reset and Presence Pulses)
All 1-Wire communication with the MAX16816 begins
with an initialization sequence that consists of a Reset
Pulse from the master followed by a Presence Pulse
from the MAX16816 (Figure 6). When the MAX16816
sends the Presence Pulse in response to the Reset
Pulse, it is indicating to the master that it is ready to
receive and transmit data.
During the initialization sequence, the bus master trans-
mits the reset pulse by pulling the 1-Wire bus low for a
minimum of 480μs. The bus master then releases the
bus and goes into receive mode. When the bus is
released, the pullup resistor pulls the 1-Wire bus high.
When the MAX16816 detects this rising edge, it waits
15μs to 60μs and then transmits a Presence Pulse by
pulling the 1-Wire bus low for 60μs to 240μs.
Read and Write Time Slots
The bus master writes data to the MAX16816 during
write time slots and reads data from the MAX16816
during read time slots. One bit of data is transmitted
over the 1-Wire bus per time slot.
MASTER Rx "PRESENCE PULSE"
t MSP
V OH
V OL OR V IL
0V
t RSTL
RESISTOR
Figure 6. 1-Wire Initialization Timing
MASTER
MAX16816
26
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX16816EVKIT+ | 功能描述:LED 照明开发工具 MAX16816 Eval Kit 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: |
| MAX16818ATI+ | 功能描述:LED照明驱动器 1.5MHz 30A w/Rapid LED Current Pulsing 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 |
| MAX16818ATI+T | 功能描述:LED照明驱动器 1.5MHz 30A w/Rapid LED Current Pulsing 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 |
| MAX16818ETI+ | 功能描述:LED照明驱动器 1.5MHz 30A w/Rapid LED Current Pulsing 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 |
| MAX16818ETI+T | 功能描述:LED照明驱动器 1.5MHz 30A w/Rapid LED Current Pulsing 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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