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

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.


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 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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