TPS40422RHAR

TPS40422RHAR is a Texas Instruments power-management device used for hot-swap protection and current limiting of a live power rail. It typically functions as a high-side switch with built-in protection and control features, designed to protect boards and backplanes during insertion/removal and to limit inrush current.
Key features (typical): adjustable current limit, soft-start to reduce inrush, undervoltage lockout, overcurrent and overtemperature protection, fault/status signaling, and latch/vent options depending on variant. Target applications include servers, telecom, networking, and industrial equipment where reliable power-rail protection is needed.
RHAR is a packaging/reel code from TI; exact package type and lead finish should be confirmed in the datasheet or packaging guide.
For precise electrical specs (input voltage range, current limit range, timing, pinout) and layout guidance, refer to the TPS40422 datasheet and TI packaging documentation. If you’d like, I can extract a quick spec summary from the latest datasheet.

TPS40422RHAR features:
- Dual hot‑swap controller for two rails; independent current‑limit on each channel
- Wide input range up to 60 V; protects against inrush and faults
- Adjustable current limit via sense resistor; programmable soft‑start
- Pre‑charge control for charging large input capacitors
- Protections: overcurrent/short‑circuit, overvoltage, undervoltage lockout, thermal shutdown
- Reverse‑current protection
- Fault/Status signaling outputs (typically open‑drain)
- Drives external N‑channel MOSFETs (suitable for back‑to‑back FET configurations)
- Packaging: RHAR (HTSSOP‑16 with exposed pad) for improved thermal performance
Typical uses: telecom, data center/server power rails, and industrial applications requiring inrush control and rail protection.

TPS40422RHAR is in a 16‑pin HTSSOP package with exposed pad (thermally enhanced), RoHS compliant; tape & reel option.

8 pins. It is a high-side hot‑swap controller that drives an external N‑channel MOSFET to limit inrush current and protect a power rail. It provides current‑limit/soft‑start and protection features (overcurrent/undervoltage/overvoltage) for safe power-up/down of a supply.

Manufacturer: Texas Instruments Incorporated (TI).
TI is a multinational technology company that designs, manufactures, and sells semiconductors and integrated circuits. It specializes in analog and power management, embedded processing, and various other semiconductor products for electronics across multiple industries.

Typical applications for TPS40422RHAR include high-efficiency DC-DC buck regulators for point-of-load power. Use cases: CPU/GPU core VRMs in desktops and servers; notebook/embedded power supplies; FPGA/ASIC core rails; telecom and networking equipment power rails; distributed power architectures in industrial and consumer electronics.

To give accurate equivalents, do you want:
- TI-to-TI pin-compatible cross-references, or
- cross-vendor equivalents?
Also confirm the package (RHAR) and key specs (input voltage, output voltage/current, frequency). I can pull TI’s official cross-reference once you specify.