ATA6626 데이터 시트보기 (PDF) - Atmel Corporation

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ATA6626

LIN Bus Transceiver with 3.3V (5V) Regulator and Watchdog

Atmel Corporation 

Features

• Master and Slave Operation Possible

• Supply Voltage up to 40V

• Operating voltage VS = 5V to 27V

• Typically 10 µA Supply Current During Sleep Mode

• Typically 57 µA Supply Current in Silent Mode

• Linear Low-drop Voltage Regulator:

– Normal, Fail-safe, and Silent Mode

– ATA6622 VCC = 3.3V ±2%

– ATA6624 VCC = 5.0V ±2%

– ATA6626 VCC = 5.0V ±2%, TXD Time-out Timer Disabled

– In Sleep Mode VCC is Switched Off

• VCC- Undervoltage Detection (4 ms Reset Time) and Watchdog Reset Logical

Combined at Open Drain Output NRES

• Negative Trigger Input for Watchdog

• Boosting the Voltage Regulator Possible with an External NPN Transistor

• LIN Physical Layer According to LIN 2.0, 2.1 and SAEJ2602-2

• Wake-up Capability via LIN-bus, Wake Pin, or Kl_15 Pin

• INH Output to Control an External Voltage Regulator or to Switch off the Master Pull Up

Resistor

• TXD Time-out Timer; ATA6626: TXD Time-out Timer Is Disabled

• Bus Pin is Overtemperature and Short Circuit Protected versus GND and Battery

• Adjustable Watchdog Time via External Resistor

• Advanced EMC and ESD Performance

• Fulfills the OEM “Hardware Requirements for LIN in automotive Applications Rev.1.0”

• Interference and Damage Protection According ISO7637

• Package: QFN 5 mm × 5 mm with 20 Pins

1. Description

The ATA6622 is a fully integrated LIN transceiver, which complies with the LIN 2.0,

2.1 and SAEJ2602-2 specifications. It has a low-drop voltage regulator for

3.3V/50 mA output and a window watchdog. The ATA6624 has the same functionality

as the ATA6622; however, it uses a 5V/50 mA regulator. The ATA6626 has the same

functionality as ATA6624 without a TXD time-out timer. The voltage regulator is able

to source 50 mA, but the output current can be boosted by using an external NPN

transistor. This chip combination makes it possible to develop inexpensive, simple, yet

powerful slave and master nodes for LIN-bus systems. ATA6622/ATA6624/ATA6626

are designed to handle the low-speed data communication in vehicles, e.g., in conve-

nience electronics. Improved slope control at the LIN-driver ensures secure data

communication up to 20 kBaud. Sleep Mode and Silent Mode guarantee very low cur-

rent consumption. The ATA6626 is able to switch the LIN unlimited to dominant level

via TXD for low data rates.

LIN Bus

Transceiver

with 3.3V (5V)

Regulator and

Watchdog

ATA6622

ATA6624

ATA6626

ATA6622C

ATA6624C

ATA6626C

4986I–AUTO–07/10

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