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Texas Instruments TLIN1431x-Q1 Automotive LIN SBCs

Texas Instruments TLIN1431x-Q1 Automotive LIN SBCs are a local interconnect network (LIN) system basis chip (SBC) that incorporates a watchdog, high-side switch, limp home capability, and highly configurable WAKE input pin. The TLIN1431x-Q1 self-determines the control method, pin or serial peripheral interface (SPI), at power up. The watchdog defaults to a window watchdog for both control methods. For flexibility, the TI TLIN1431x-Q1 can be configured as a window or timeout watchdog with greater than 20 different time windows when SPI control is used. The LIN transceiver offers a 200kbps fast mode for end-of-line programming. A high-side switch with diagnostic capability is included for onboard LED. The highly configurable WAKE pin is able to be used with the high-side switch for cyclic sensing, lowering the ECU sleep current. The WKRQ/INH pin can be configured for a digital wake output (WKRQ) or a V_SUP based inhibit (INH) enable pin for an external supply.

Features

AEC-Q100 (Grade 1): Qualified for automotive applications
Functional safety-capable
- Documentation available to aid functional safety system design
Enhanced features supporting 12V applications
- ±58V LIN bus fault protection
- 3.3V (TLIN14313-Q1) or 5V (TLIN14315-Q1) LDO output supporting 125mA from 12V supply
- High-side switch with open load and short circuit detection controlled by 10-bit PWM or timer
- LIMP pin configurable as a high-side switch
- Configurable WAKE pin supporting different input thresholds or methods
- Sleep mode with ultra-low current consumption allows wake-up events from:
  - LIN bus
  - Local wake-up through WAKE
    - Cyclic and static sensing

Local interconnect network (LIN) physical layer specification LIN 2.2A, ISO 17987–4:2016 and SAE J2602:2021 compliant
Integrated watchdog supervisor configurable by pin or serial peripheral interface, SPI
Protection Features:
- ESD protection
- Under voltage protection on V_SUP and V_CC
- TXD dominant time out (DTO) protection
- Thermal shutdown protection
Integrated battery voltage monitor
Available in leadless QFN (20) package with improved automated optical inspection (AOI) capability

Applications

Body electronics and lighting
Hybrid, electric, and powertrain systems

Infotainment and cluster
Appliances

Texas Instruments TLIN1431x-Q1 Automotive LIN SBCs

Features

Applications

SPI Control Simplified Schematic

Pin Control Simplified Schematic

High Level Block Diagram

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