Before substituting, compare the datasheets of the equivalent ICs. The LA3161 is the most common drop-in replacement for the original Highway 09 in discrete switch-mode applications.
VBAT (24V) ──┬── 0.1 µF ─── VBAT_pin ├── 10 µF (electrolytic) ── GND └── LED0 ── 120 Ω ──[LED string]─┬─ GND highway 09 ic datasheet
Acts as a specialized driver to translate user input into gate signals for heating elements. highway 09 ic datasheet
If you cannot source the original Highway 09 IC, do not despair. Based on functional analysis, the following standard parts are direct or near-direct equivalents: highway 09 ic datasheet
The FAULT_N pin goes low if any of the following occurs:
: Used in electronic control units (ECUs) and instrument clusters for power regulation. Design and Pinout Information
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