IM1028

Low-Power LIN SBC

Simplifies System Design for Smart Automotive Actuator Nodes


The Immorta IM1028 is a domestic automotive-grade system basis chip integrating a low-dropout regulator (LDO) and a LIN transceiver, specifically designed to meet the high standards of automotive electronic systems. The product complies with the "LIN 2.x / ISO 17987-4:2016 / SAE J2602" standards, ensuring high interoperability and compatibility with various LIN bus devices. 

IM1028 features excellent EMC performance. The ESD protection for LIN pins supports HBM ±8kV, adapting to most applications without extra external ESD components. Furthermore, it passed the Level IV (200mA) Class A standard in Bulk Current Injection (BCI) testing, enabling stable operation in harsh automotive EMC environments. 

Compliant with AEC-Q100 Grade 1 for automotive applications 

Junction temperature: -40°C to +150°C 

LIN Transceiver:

oCompliant with LIN 2.0, LIN 2.1, LIN 2.2, LIN 2.2A, and ISO 17987-4 Electrical Physical Layer (EPL) specifications 

oLIN transmission rate up to 20kbps 

oSupports TXD dominant timeout protection 

LDO Power Supply:

oProvides 3.3V or 5V output voltage, delivering up to 100mA current with ±2% accuracy 

Operating Modes & Power:

oLow-power Standby mode: 25 µA consumption 

oLow-power Sleep mode: 13 µA consumption 

Low Electromagnetic Emission (EME) and High Electromagnetic Immunity (EMI) performance 

Supports Normal mode, low-power Standby mode, and low-power Sleep mode 

Supports LIN/BAT pins ±8kV ESD 

Supports chip overtemperature protection function 

Available in SOP8 and DFN8 packages 

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Highlights

  • Specially designed EMC protection circuitry allows the chip to pass the highest BCI Level IV testing without any additional external EMC components.

  • Standby modepower consumption is as low as 20 µA, effectively reducing system standbypower.

  • ±8kV pin ESD,satisfying ISO 7637 waveform testing.


Typical Application

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Applications

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Product Ordering Matrix

Product Model

Input Voltage

Output Current

Output Voltage

Operating Temperature

Package Type

Trays / Tape & Reel

IM1028T/5V0/20

6V~40V

100mA

5V

-40 ℃~150 ℃

SOP8

Tape & Reel

IM1028T/3V3/20

6V~40V

100mA

3.3V

-40 ℃~150 ℃

SOP8

Tape & Reel

IM1028TK/5V0/20

6V~40V

100mA

5V

-40 ℃~150 ℃

DFN8

Tape & Reel

IM1028TK/3V3/20

6V~40V

100mA

3.3V

-40 ℃~150 ℃

DFN8

Tape & Reel



Pin Descriptions


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Pin No.

Pin Name

Pin Type

Functional Description

1

BAT

Power Input

Battery power supply input 

2

EN

Enable Input

Mode switching input port, internal resistor pull-down; 

High level enters Normal mode, Low level enters Low-Power mode 

3

GND

Ground

Ground

4

LIN

LIN Bus I/O

LIN bus high-voltage input/output port 

5

RXD

Receiver Output

Digital logic output of the receiver; driven low after a wake-up event 

6

TXD

Transmitter Input

Digital logic input of the transmitter; internal resistor pull-up 

7

RSTN

Reset Output

Controls external system reset, internal resistor pull-up;

outputs low level when VCC undervoltage protection occurs

8

VCC

LDO Output

Low-dropout regulator (LDO) voltage output 



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