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TLIN1431-Q1

ACTIVE

Automotive LIN SBC for 12-V systems with integrated VREG and watchdog

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Data sheet

TLIN1431-Q1

ACTIVE
Data sheet Order now

Product details

Type Mid-range Protocols LIN Number of channels 1 Signaling rate (max) (Mbps) 0.2 Supply voltage (V) 5.5 to 28 Bus fault voltage (V) -58 to 58 Iout (max) (mA) 125 Regulated outputs (#) 1 Step-down DC/DC converter 0 LDO 1 LDO Vout (typ) (V) 3.3, 5 Watchdog type Integrated, Timeout, Window Low-power mode Selective Wake, Sleep Rating Automotive
Type Mid-range Protocols LIN Number of channels 1 Signaling rate (max) (Mbps) 0.2 Supply voltage (V) 5.5 to 28 Bus fault voltage (V) -58 to 58 Iout (max) (mA) 125 Regulated outputs (#) 1 Step-down DC/DC converter 0 LDO 1 LDO Vout (typ) (V) 3.3, 5 Watchdog type Integrated, Timeout, Window Low-power mode Selective Wake, Sleep Rating Automotive
VQFN (RGY) 20 15.75 mm² 4.5 x 3.5
  • AEC-Q100 (Grade 1): Qualified for automotive applications
  • Functional safety-capable
  • 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
  • Enhanced features supporting 12-V applications
    • ±58 V LIN bus fault protection
    • 3.3 V ( TLIN14313-Q1) or 5 V ( TLIN14315-Q1) LDO output supporting 125 mA from 12 V 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: ultra-low current consumption allows wake up event from:
      • LIN bus
      • Local wake up through WAKE
        • Cyclic and static sensing
  • Protection Features:
    • ESD protection
    • Under voltage protection on VSUP and VCC
    • 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
  • AEC-Q100 (Grade 1): Qualified for automotive applications
  • Functional safety-capable
  • 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
  • Enhanced features supporting 12-V applications
    • ±58 V LIN bus fault protection
    • 3.3 V ( TLIN14313-Q1) or 5 V ( TLIN14315-Q1) LDO output supporting 125 mA from 12 V 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: ultra-low current consumption allows wake up event from:
      • LIN bus
      • Local wake up through WAKE
        • Cyclic and static sensing
  • Protection Features:
    • ESD protection
    • Under voltage protection on VSUP and VCC
    • 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

The TLIN1431x-Q1 is a local interconnect network (LIN) system basis chip (SBC) that integrates a watchdog, high-side switch, limp home capability and highly configurable WAKE input pin. The device 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 but for flexibility the device can be configured as a window or timeout watchdog with greater than 20 different time windows when SPI control is used.

The LIN transceiver provides a 200 kbps fast mode for end of line programming. A high-side switch with diagnostic capability is provided for on board LED. The highly configurable WAKE pin can be used with the high-side switch for cyclic sensing, thus, reducing the ECU sleep current. The WKRQ/INH pin can be configured for a digital wake output (WKRQ) or a VSUP based inhibit (INH) enable pin for an external supply.

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The TLIN1431x-Q1 is a local interconnect network (LIN) system basis chip (SBC) that integrates a watchdog, high-side switch, limp home capability and highly configurable WAKE input pin. The device 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 but for flexibility the device can be configured as a window or timeout watchdog with greater than 20 different time windows when SPI control is used.

The LIN transceiver provides a 200 kbps fast mode for end of line programming. A high-side switch with diagnostic capability is provided for on board LED. The highly configurable WAKE pin can be used with the high-side switch for cyclic sensing, thus, reducing the ECU sleep current. The WKRQ/INH pin can be configured for a digital wake output (WKRQ) or a VSUP based inhibit (INH) enable pin for an external supply.

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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet TLIN1431-Q1 Automotive LIN SBC with Integrated High-Side Switch and Watchdog datasheet (Rev. A) PDF | HTML 14 Dec 2022
Application brief SBC(시스템 기반 칩) 개론: 초보자를 위한 CAN 및 LIN SBC 가이 드 PDF | HTML 09 Dec 2025
Application brief 系統基礎晶片 (SBC) 101：CAN 和 LIN SBC 入門指南 PDF | HTML 08 Dec 2025
Application brief System Basis Chips (SBCs) 101: A Beginner’s Guide to CAN and LIN SBCs PDF | HTML 03 Dec 2025
Product overview System Basis Chips (SBCs) 101 - Exploration of TI's SBC Portfolio PDF | HTML 20 Nov 2025
Functional safety information TLIN1431-Q1 Functional Safety Analysis Report Summary (Rev. A) PDF | HTML 06 Aug 2025
Technical article 系統基礎晶片 101 - CAN、CAN FD 和 LIN SBC 入門指南 (Rev. A) PDF | HTML 10 Apr 2024
Technical article 시스템 기반 칩 101 - CAN, CAN FD 및 LIN SBC에 대한 초보자 가이드 (Rev. A) PDF | HTML 08 Apr 2024
Technical article System basis chips 101 - A beginner's guide to CAN, CAN FD and LIN SBCs (Rev. A) PDF | HTML 27 Mar 2024
Application brief Full-Featured Automotive Side Mirror PDF | HTML 15 Mar 2024
Functional safety information TLIN1431x-Q1 Functional Safety Manual PDF | HTML 13 Dec 2022
Application note TLIN1431-Q1 Startup Guide PDF | HTML 07 Jun 2022
Certificate TLIN1431EVM EU RoHS Declaration of Conformity (DoC) 09 May 2022
Functional safety information TLIN1431-Q1 Functional Safety Report PDF | HTML 03 Jan 2022

Design & development

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Evaluation board

TLIN1431EVM — TLIN1431-Q1 LIN evaluation module with WAKE, HSS and watchdog

This EVM can be used to evaluate the TLIN1431-Q1 family of devices, including the TLIN14315RGY and the TLIN14313RGY. All IC signals are available on the board, and features of the TLIN1431-Q1 are accessible through the features of the board.

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