Packaging information
| Package | Pins HTSSOP (DCP) | 38 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 2,000 | LARGE T&R |
Features for the TIC12400-Q1
- Qualified for automotive applications
- AEC-Q100 qualified with the following results:
- Device temperature grade 1: –40°C to 125°C ambient operating temperature
- Device HBM ESD classification level H2
- Device CDM ESD classification level C4B
- Functional Safety-Capable
- Designed to support 12 V automotive systems with over-voltage and under-voltage warning
- Monitors up to 24 direct switch inputs with 10 inputs configurable to monitor switches connected to either ground or battery
- Switch input withstands up to 40 V (load dump condition) and down to −24 V (reverse polarity condition)
- 6 configurable wetting current settings: (0 mA, 1 mA, 2 mA, 5 mA, 10 mA, and 15 mA)
- Integrated 10-bit ADC for multi-position analog switch monitoring
- Integrated comparator with 4 programmable thresholds for digital switch monitoring
- Ultra-low operating current in polling mode: 68 µA typical (tPOLL = 64 ms, tPOLL_ACT = 128 µs, all 24 inputs active, comparator mode, all switches open)
- Interfaces directly to MCU using 3.3 V / 5 V serial peripheral interface (SPI) protocol
- Interrupt generation to support wake-up operation on all inputs
- Integrated battery and temperature sensing
- ±8 kV contact discharge ESD protection on input pins per ISO-10605 with appropriate external components
- 38-Pin TSSOP package
Description for the TIC12400-Q1
The TIC12400-Q1 is an advanced Multiple Switch Detection Interface (MSDI) designed to detect external switch status in a 12-V automotive system. The TIC12400-Q1 features an integrated 10-bit ADC to monitor multi-position analog switches and a comparator to monitor digital switches independently of the MCU. Detection thresholds can be programmed for the ADC and the comparator to support various switch topologies and system non-idealities. The device monitors 24 direct switch inputs, with 10 inputs configurable to monitor switches connected to either ground or battery. 6 unique wetting current settings can be programmed for each input to support different application scenarios. The device supports wake-up operation on all switch inputs to eliminate the need to keep the MCU active continuously, thus reducing power consumption of the system. The TIC12400-Q1 also offers integrated fault detection, ESD protection, and diagnostic functions for improved system robustness. The TIC12400-Q1 supports 2 modes of operations: continuous and polling mode. In continuous mode, wetting current is supplied continuously. In polling mode, wetting current is turned on periodically to sample the input status based on a programmable timer, thus the system power consumption is significantly reduced.