参数资料
| 型号： | ATA6620-TAQY |
| 厂商： | Atmel |
| 文件页数： | 3/22页 |
| 文件大小： | 0K |
| 描述： | IC TXRX LIN BUS 5V/50MA 8SOIC |
| 标准包装： | 4,000 |
| 类型： | 收发器 |
| 规程： | LIN |
| 电源电压： | 5 V ~ 18 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 带卷 (TR) |
11
4850I–AUTO–09/09
ATA6620N
4.4
Unpowered Mode
If battery voltage is connected to the application circuit (see Figure 4-7), the voltage at the VS
pin increases due to the block capacitor. When V
S is higher than the VS undervoltage threshold,
V
Sth, the IC-mode changes from Unpowered to Pre-normal mode. The VCC output voltage
reaches nominal value after t
VCC. This time depends on the VCC capacitor and the load.
NRES is low for the reset time delay t
Reset; no mode change is possible during this time.
Figure 4-7.
V
CC Voltage Regulator: Ramp Up and Undervoltage
5.
Fail-safe Features
During a short circuit at LIN, the output limits the output current to I
BUS_LIM. Due to the power
dissipation, the chip temperature exceeds t
LINoff and the LIN output is switched off. The chip
cools down and after a hysteresis of t
hys, switches the output on again. During LIN
overtemperature switch-off, the V
CC regulator works independently.
There are now reverse currents < 3 A at pin LIN during loss of V
Batt or GND. This is optimal
behavior for bus systems where some slave nodes are supplied from battery or ignition.
During a short circuit at VCC, the output limits the output current to I
VCCn. Because of
undervoltage, NRES switches to low and sends a reset to the microcontroller. The IC
switches into Pre–normal mode. If the chip temperature exceeds the value t
VCCoff, the VCC
output switches off. The chip cools down and after a hysteresis of t
hys, switches the output on
again. Because of Pre-normal mode, the V
CC voltage will switch on again although EN is
switched off from the microcontroller.The microcontroller can then start with normal
operation.
Pin EN provides a pull-down resistor to force the transceiver into recessive mode if EN is
disconnected.
Pin RXD is set floating if V
Batt is disconnected.
Pin TXD provides a pull-up resistor to force the transceiver into recessive mode if TXD is
disconnected.
VS
5.5V
12V
3V
VCC
5V
NRES
5V
Vthun
tres
tes_f
tVCC
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ATA6620-TASY | 功能描述:IC TXRX LIN BUS 5V/50MA 8SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:1,140 系列:AU 类型:收发器 驱动器/接收器数:1/1 规程:CAN 电源电压:5.3 V ~ 27 V 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SO 包装:管件 其它名称:935267940512AU5790D14AU5790D14-ND |
| ATA6621 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:LIN Transceiver with 5V Regulator and Watchdog |
| ATA6621_06 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:LIN Transceiver with 5V Regulator and Watchdog |
| ATA6621-EK | 功能描述:界面开发工具 Demoboard LIN SBC 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 |
| ATA6621N | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:LIN Transceiver with 5V Regulator and Watchdog |
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