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Product Details

Seat Switch ASIC (sheet semiconductor)

Seat Switch ASIC is a dedicated semiconductor for switch modules that operate the car seat heating wires and ventilation.

Advantages

Integration of peripheral devices(system cost reduction through PCB optimization)

LIN communication support(exchange of information through single wire LIN BUS)

Seat Switch ASIC is a product optimal for automotive seat heating wire and ventilation switch applications.

  • - Control flexibility for 2 modular types (detachable/integrated)
  • - 4-channel input interface for switch detection and 12-channel low-side driver support for Indication LEDs

Major Functions & Features

Major Specification

LIN LIN specification 2.1 compliant
Built-in LIN Transceiver & Controller
Switch Interface Built-in independent 4-channel switch input and adjustable timer
Built-in De-bounce Filter for switch chattering noise filtering
LED Driver Integrated 12-Channel Independent LED Driver
Built-in overcurrent limiting circuit
Built-in PWM with 8-bit resolution for LED photosensitivity control
LDO & OSC Built-in 3.3V/5V Voltage Regulator
Built-in RC-Oscillator(10MHz)
Protection Built-in temperature protection circuit
Built-in undervoltage and overvoltage detection circuit

Basic Specification

Operating Temperature -40℃ ~ 125℃
Operating Supply Voltage 6V ~ 19V
Package Size 32 pin Exposed-TQFP (7mm x 7mm)
Qualification AEC-Q100(Grade 1) / MSL 3 Level / PB-Free / RoHS
LIN Transmission rates up to 20Kbps
Switch Interface Low threshold typ. 2V / High threshold typ. 3V
LED Driver ON resistance typ. 45ohm / Over current limit typ. 27mA
LDO 5V LDO(5V ± 5%) / 3.3V LDO(3.3V ± 5%)
Under/Over voltage Lockout Under voltage lockout typ. 6.2V / Over voltage lockout typ. 17.4V

Product Picture

Application Example