1、The Seat Switch ASIC is designed for vehicle SEAT heat/ ventilation switch module.
2、Advantage of The Seat Switch ASIC- Integration of peripheral components (Reduce the system costs though PCB optimization).
- Supporting LIN communication (Exchange of information via single wire LIN bus).
3、The Seat Switch ASIC is an optimization product for automotive SEAT heat / ventilation switch application.
- Providing flexibility of control for two module type (separate / integration type).
- Supporting 4 channels input for switch detection and 12 channels low-side driver for LED indication.
iA Seat Switch ASic Application Example:
iA Seat Switch ASic Key-Features：
| One Chip Solution | LIN |
▶ Compliant to LIN specification 2.1 ▶ Integrated with LIN Trans. & Contr. |
| Switch Interface |
▶ Independent 4 channel switch input and Configurable timer ▶ Integrated de-bounce filter |
|
| LED nterface |
▶ Independent 12 channel integrated LED driver ▶ Integrated over current limit circuit ▶ LED dimming control by 8 bit resolution PWM |
|
| LDO & OSC |
▶ Voltage regulator for 3.3V/5V ▶ Internal RC-Oscillator (10MHz) |
|
| Protection |
▶ Over temperature protection ▶ Under/over voltage lockout |
iA Seat Switch ASic Specification：
| Operating Temperature | -40℃~ 125℃ |
| Operating Supply Voltage | 6V ~ 19V |
| Package Size | 32 pin Exposed-TQFP (7mm x 7mm) |
| Certificate | AEC-Q100 / 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 |
