Rated for Grade 1 automotive applications operating in ambient temperatures from -40°C to +125°C. 2. Pin Configuration and Functions
Check the status of the EN pin. If the host controller fails to assert the EN pin high, internal driver stages remain disabled. Ensure that proper logic levels are reaching the chip.
The Highway 09 IC has a wide range of applications, including: highway 09 ic datasheet
The third pin——is what separates this IC from the pack. The datasheet reveals that the regulator maintains a constant 1.25V reference between the Output and Adjust pins. This clever architecture means the "ground" reference for the chip isn't actually Earth ground; it "floats" relative
): Programmed internally to 450 kHz (supports synchronization from 200 kHz to 2.2 MHz via external clocking). High-Side MOSFET Rated for Grade 1 automotive applications operating in
: Control pins for setting operational modes or specific processing tasks.
Incorporates a synchronous buck converter framework utilizing current-mode control loops. It features pulse-width modulation (PWM) during normal loads and automatically transitions into pulse-frequency modulation (PFM) during light-load conditions to optimize power savings. If the host controller fails to assert the
high-frequency ceramic capacitor as close as possible to the VCCcap V sub cap C cap C end-sub GNDcap G cap N cap D
| IC | Key Differences | |:---|:---| | | Enhanced Flash MCU, higher performance, reprogrammable | | HT46R47 | Similar 8‑bit MCU with A/D converter | | HT46R51A | Nearly identical specifications, different pinout | | SN74HC595 | 8‑bit shift register (for output expansion only) |
Switch node connection for the internal high-side and low-side MOSFETs.