ISO7041-Q1 Automotive, Ultra-Low Power Four-Channel Digital Isolator

1 Features

• AEC-Q100 qualified with the following results:

– Device temperature Grade 1: –40°C to +125°C

ambient operating temperature range

• Functional Safety-Capable

– Documentation available to aid functional safety

system design: ISO7041-Q1

• Meets VDA320 isolation requirements

• Ultra-low power consumption

– 3.5 μA per channel quiescent current (3.3 V)

– 15 μA per channel at 100 kbps (3.3 V)

– 116 μA per channel at 1 Mbps (3.3 V)

• Robust isolation barrier

– >100-year projected lifetime

– ±100 kV/μs typical CMTI

• Wide supply range: 3.0 V to 5.5 V

• Wide temperature range: –40°C to +125°C

• Small 16-QSOP package (16-DBQ)

• Signaling rate: Up to 4 Mbps

• Default output High (ISO7041-Q1) and Low

(ISO7041F-Q1) options

• Robust electromagnetic compatibility (EMC)

– System-level ESD, EFT, and surge immunity

– ±8 kV IEC 61000-4-2 contact discharge

protection across isolation barrier

– Very low emissions

• Safety-related certifications (planned):

– DIN V VDE 0884-11:2017-01

– UL 1577 Component Recognition Program

– IEC 60950-1, IEC 62368-1, IEC 61010-1,

IEC60601-1 and GB 4943.1-2011 certifications

2 Applications

• Hybrid, electric and powertrain system (EV/HEV)

– Battery management system (BMS)

– On-board charger

– Traction inverter

– DC/DC converter

– Inverter and motor control

3 Description

The ISO7041-Q1 device is an ultra-low power,

multichannel digital isolator that can be used to

isolate CMOS or LVCMOS digital I/Os. Each isolation

channel has a logic input and output buffer separated

barrier. Innovative edge based architecture combined

with an ON-OFF keying modulation scheme allows

these isolators to consume very-low power while

per channel dynamic current consumption of the

device is under 120 μA/Mbps and the per channel

static current consumption is 3.5 μA at 3.3 V, allowing

for use of the ISO7041-Q1 in both power and thermal

constrained system designs.

The device can operate as low as 3.0 V, as high

as 5.5 V, and is fully functional with different supply

voltages on each side of isolation barrier. The four

channel isolator comes in a 16-QSOP package with

three forward-direction channels and one reverse-

direction channel. The device has default output high

and low options. If the input power or signal is lost,

default output is high for the ISO7041-Q1 device

without the suffix F and low for the ISO7041F-Q1

device with the F suffix. See the Device Functional

Modes section for more information.

Device Information

PART NUMBER(1)

PACKAGE

BODY SIZE (NOM)

ISO7041-Q1

QSOP (16)

4.90 mm × 3.90 mm

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

BQ75614-Q1

MCU

PMIC

IN

VCC

CVDD

BAT

OUT

12 V

UART

ISO7041-Q1

VCC1

VCC2

FUSE

Relay

GPIOx

Rs

Current sense

Fuse/relay sense

GND1

GND2

Battery

Simplified Application Schematic

ISO7041-Q1

SLLSFN3 – JUNE 2022

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.