LM5012QDDARQ1

LM5012QDDARQ1 is TI’s automotive-grade DC-DC buck regulator (part of the LM5012 family). It is designed for high-voltage automotive environments and provides a simple way to convert a vehicle supply to a lower, stable rail.
Key points:
- Integration: Includes a switching regulator with an internal or easily paired power switch; intended for compact, point-of-load supplies in vehicles.
- Input/Output: Suited for automotive voltage ranges (including 12V and up to higher rails in some systems); output is adjustable via external feedback components.
- Control and protections: Uses current‑mode control with features such as soft-start, enable, and protections (UVLO, overcurrent/short-circuit, overvoltage, thermal shutdown).
- Packaging/grade: The QDDARQ1 suffix indicates automotive-grade (AEC-Q100) device and related packaging/tape features (see datasheet for exact package and grade details).
- Applications: Automotive ECUs, infotainment, sensor rails, and other vehicle power rails requiring efficient, compact DC-DC conversion.
For exact electrical specs, pinout, package details, and recommended designs, consult the TI LM5012QDDARQ1 datasheet/product page.

LM5012QDDARQ1 is in a 16‑pin QFN package (4×4 mm) with an exposed pad (RoHS, lead-free).

- Pin count: 16 pins (QFN, package code QDD).
- Function: Automotive-grade high-voltage buck/boost controller. Drives an external N-channel MOSFET for switching regulators; supports wide input (up to ~650 V), current‑mode PWM with soft-start, enable/run, undervoltage and overcurrent protection, and thermal shutdown. Uses an RT/OSC pin to set switching frequency and requires external inductor, diode, and MOSFET.

- Manufacturer: Texas Instruments Incorporated (TI)
- What kind of company: An American multinational semiconductor company that designs and manufactures analog and embedded processing integrated circuits (ICs), including power management and other semiconductor products.

- Automotive-grade LED driver/backlight applications
- High-voltage buck regulators for automotive and industrial power supplies
- General DC-DC converters with wide input (up to ~75 V) for ECUs, sensors, dashboards
- Rugged, wide-input power supplies for battery-powered devices in harsh environments

There aren’t exact 1:1 cross references for LM5012QDDARQ1. It’s TI’s automotive-grade 60-V, 2-A buck regulator/controller with an integrated MOSFET in a QDD package. Closest TI substitutes are other LM501x family parts (LM5012, LM5013, LM5014) with similar architecture. For cross-vendor options, search for 60-V buck controllers with integrated FET (Analog Devices, Onsemi, etc.), and verify voltage/current ratings, packaging, and pinout for compatibility.