参数资料
| 型号： | MAX14820ETG+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/30页 |
| 文件大小： | 0K |
| 描述： | IC IO-LINK TXRX 24TQFN |
| 标准包装： | 2,500 |
| 系列： | * |
第1页第2页第3页第4页第5页第6页第7页第8页第9页当前第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页
MAX14820
IO-Link Device Transceiver
18
Maxim Integrated
Wake-Up Detection
The device detects an IO-Link wake-up condition on the
C/Q line in push-pull, high-side (PNP), or low-side (NPN)
operation modes. A wake-up condition is detected when
the C/Q output is shorted for 80Fs (typ). WU pulses low
for 190Fs (typ) when the device detects a wake-up pulse
on C/Q (Figure 5).
Set the WuIntEn bit in the Mode register to set the WuInt
bit in the Status register and generate an interrupt on
IRQ when a wake-up pulse is detected. WuInt is set
and IRQ asserts immediately after C/Q is released when
WuIntEn = 1.
Thermal Protection and Considerations
The internal LDOs and drivers can generate more power
than the package for the devices can safely dissipate.
Ensure that the driver LDO loading is less than the pack-
age can dissipate. Total power dissipation for the device
is calculated using the following equation:
PTOTAL = PC/Q + PDO + P5 + PLDO33 + PQ +
PCLCQ + PCLDI
where PC/Q is the power generated in the C/Q driver,
PDO is the power dissipated by the DO driver, P5 and
PLDO33 are the power generated by the LDOs, PQ is the
quiescent power generated by the devices, and PCLCQ
and PCLDI are the power generated in the C/Q and DI
current sinks.
Ensure that the total power dissipation is less than the
limits listed in the Absolute Maximum Ratings section.
Use the following to calculate the power dissipation (in
mW) due to the C/Q driver:
PC/Q = [IC/Q(max)] × [0.5 + 7 × IC/Q(max)]
Calculate the internal power dissipation of the DO driver
using the following equation:
PDO = [IDO(max)] × [0.5 + 7 × IDO(max)]
Calculate the power dissipation in the 5V LDO, V5, using
the following equation:
P5 = (VLDOIN - V5) × I5
where I5 includes the ILDO33 current sourced from
LDO33.
Calculate the power dissipated in the 3.3V LDO, LDO33,
using the following equation:
PLDO33 = 1.7V × ILDO33
Calculate the quiescent power dissipation in the device
using the following equation:
PQ = ICC(max) × VCC(max)
If the current sinks are enabled, calculate their associ-
ated power dissipation as:
PCLCQ = ILLM_C/Q(max) × VC/Q(max)
PCLDI = ILLM_DI(max) × VDI(max)
Overtemperature Warning
Bits in the Status and Mode registers are set when the
temperature of the device exceeds +115NC (typ). The
OTempInt bit in the Status register is set and IRQ asserts
when the OTemp bit in the Mode register is set. Read the
Status register to clear the OTempInt bit and IRQ.
The OTemp bit is cleared when the die temperature falls
to +95NC.
The device continues to operate normally unless the
die temperature reaches the +150NC thermal shutdown
threshold, when the device enters thermal shutdown.
Thermal Shutdown
All regulators and the C/Q and DO output drivers are
automatically switched off when the internal die tempera-
ture exceeds the +150NC (typ) thermal shutdown thresh-
old. SPI communication is not available during a thermal
shutdown event.
Regulators are automatically switched on when the inter-
nal die temperature falls below the thermal shutdown
threshold plus hysteresis. The internal registers return to
their default state when the V5 regulator is switched on.
相关PDF资料 |
PDF描述 |
|---|---|
| VI-2TJ-MX-F1 | CONVERTER MOD DC/DC 36V 75W |
| MAX234EWE+T | IC RS-232 DRVR/RCVR 16-SOIC |
| VI-2TH-MX-F4 | CONVERTER MOD DC/DC 52V 75W |
| AD9235BRU-65 | IC ADC 12BIT 65MSPS 28-TSSOP |
| MS27656E13A35PB | CONN RCPT 22POS WALL MNT W/PINS |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX14820EVKIT# | 功能描述:界面开发工具 MAX14820/21 EVAL KIT RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
| MAX14821ETG+ | 功能描述:输入/输出控制器接口集成电路 NEW RoHS:否 制造商:Silicon Labs 产品: 输入/输出端数量: 工作电源电压: 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:QFN-64 封装:Tray |
| MAX14821ETG+T | 功能描述:输入/输出控制器接口集成电路 NEW RoHS:否 制造商:Silicon Labs 产品: 输入/输出端数量: 工作电源电压: 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:QFN-64 封装:Tray |
| MAX14821EVKIT# | 功能描述:界面开发工具 MAX14820/21 EVAL KIT RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
| MAX14821EWA+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
发布紧急采购，3分钟左右您将得到回复。