ATA6620

更新时间： 2024-02-23 20:35:52

品牌	Logo	应用领域
爱特美尔 - ATMEL		稳压器
页数	文件大小	规格书
19页	235K
描述
LIN ABUS TRANSCEIVER WITH INTEGRATED VOLTAGE REGULATOR

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ATA6620 技术参数

ATA6620 [Preliminary]

Figure 4-6. V_CCVoltage Regulator: Ramp Up and Undervoltage

12V

5.5V

VCC

V_thun

NRES

T_{es_f}

T_VCC

T_res

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_LINoffand 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_CCregulator works independently.

• There are now reverse currents < 3 µA at pin LIN during loss of V_Battor 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 V_CC

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_CCvoltage 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_Battis disconnected.

• Pin TXD provides a pull-up resistor to force the transceiver into recessive mode if TXD is

disconnected.

4850A–AUTO–02/05

1...6 7 8910 11 12...19

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型号	品牌	描述	获取价格	数据表
ATA6620_06	ATMEL	LIN Bus Transceiver with Integrated Voltage Regulator	获取价格
ATA6620N	ATMEL	LIN Bus Transceiver with Integrated Voltage Regulator	获取价格
ATA6620N_09	ATMEL	LIN Bus Transceiver with Integrated Voltage Regulator	获取价格
ATA6620N-TAQY	ATMEL	LIN Bus Transceiver with Integrated Voltage Regulator	获取价格
ATA6620-TAQY	ATMEL	LIN ABUS TRANSCEIVER WITH INTEGRATED VOLTAGE REGULATOR	获取价格
ATA6621	ATMEL	LIN Transceiver with 5V Regulator and Watchdog	获取价格