Texas Instruments' TLIN1431x-Q1 is a sophisticated LIN system basis chip designed for automotive applications. Its integration of a watchdog, high-side switch, limp home capability, and a highly configurable WAKE input pin sets it apart in the market. Upon power up, the device self-determines the control method, whether through pin or SPI interface. The watchdog functionality is adaptable, defaulting to a window watchdog for control methods and offering flexibility to configure it as a window or time-out watchdog with over 20 different time windows when using SPI control.
One notable feature is the 200 kbps fast mode for end-of-line programming provided by the LIN transceiver. Additionally, a high-side switch with diagnostic capability is included for onboard LED control. The highly configurable WAKE pin adds another layer of versatility, enabling cyclic sensing when paired with the high-side switch to reduce ECU sleep current. Moreover, the WKRQ/INH pin can be flexibly configured as a digital wake-output (WKRQ) or a VSUP-based inhibit (INH) enable pin for an external supply, enhancing system compatibility and functionality.
In conclusion, Texas Instruments' TLIN1431-Q1 sets a new standard for LIN physical layer transceivers in the automotive industry with its integrated advanced features, providing designers with greater control flexibility and diagnostic capabilities for enhanced system performance and efficiency.
AEC-Q100 (Grade 1) qualified for automotive applications
Functional safety-capable: documentation is available to aid the functional safety system design
LIN physical layer specifications: LIN 2.2A, ISO 17987-4:2016, and SAE J2602:2021 compliant
Integrated watchdog supervisor is configurable by a pin or SPI
Integrated battery voltage monitor
Available in leadless QFN (20) package with improved automated optical inspection (AOI) capability
Protection features:
ESD protection
Undervoltage protection on the VSUP and VCC
TXD dominant time-out (DTO) protection
Thermal shutdown protectio
Enhanced features supporting 12 V applications:
LIN bus fault protection: ±58 V
3.3 V (TLIN14313-Q1) or 5 V (TLIN14315-Q1) LDO output supports 125 mA at a 12 V supply
High-side switch with an open-load and short-circuit detection that is controlled by 10-bit PWM or a timer
The LIMP pin is configurable as a high-side switch
Configurable WAKE pin supports different input thresholds or methods
Sleep mode: ultra-low current consumption allows a wake-up event from:
Body electronics and lighting
Hybrid, electric, and powertrain systems
Infotainment and clusters
Appliances
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