ATA6841N

Product Summary

The ATA6841N is a monolithically-integrated multi-functional IC designed in Atmel’s state-of-the-art 0.8μm BCDMOS technology. With its built-in driver stages, voltage supplies and monitoring functions, it is an ideal cost saving failsafe system IC. The communication with an external microcontroller is provided by an 8-bit SPI interface. Four protected and current limited driver stages are available to control relays and additionally there is a gate driver including charge pump and bootstrap to control an external FET. The applications of the ATA6841N include parking brakes, power steering, and other applications with DC motor control.

Parametrics

ATA6841N absolute maximum ratings: (1)Supply voltage, V12: -0.3 to +26 V; (2)Supply voltage, t < 500 ms, V12: -0.3 to +45 V; (3)Current in RD1, RD2, RD3, RD4, WLN, OUTN, I(): -150 to +150 mA; (4)Current in OUTP, I(): -10 to +10 mA; (5)Voltage at V5, V5A, V(): -0.3 to +5.5 V; (6)Current in V5, I(): -150 to +10 mA; (7)Current in V5A, I(): -50 to +10 mA; (8)Voltage at V12S, V(): -0.3 to +45 V; (9)Current in V12S, I(): -60 to +10 mA; (10)Junction temperature Operation, Tjop: -40 to +150℃; Peak, Tjpeak: -40 to +165℃; (11)Storage temperature, Ts: -55 to +125℃.

Features

ATA6841N features: (1)Driver Stages, Four DMOS 150 mA Low-side Relay Drivers with Current Limitation; One Gate Driver for External N-channel FET with Charge Pump and Bootstrap; Two Universal Outputs (10 mA High Side and 60 mA Low Side); One 20 mA Warning Lamp Driver; (2)Power Supplies, 5V/150 mA Linear Regulator; 5V/30 mA Linear Regulator (also Active in Standby Mode); Internal Power Supply; Switchable System Supply Voltage Output; (3)Monitoring and Protection, 12V Monitoring; Watchdog with Reset; Two Comparators for Current Measurement; Adjustable Undervoltage Warning Level; Overtemperature Protection with Hysteresis; Two 5V Comparators; Wide Supply Voltage Range from 5.8V up to 26V; 8-bit SPI Interface; Low Current Consumption in Standby Mode 80μm; TTL and CMOS Compatible Inputs; 2 kV ESD Protection; Transient Protection According to ISO/TR 7637-1 Level 4 (Except Load Dump).

Diagrams