TPS2546QRTERQ1

TPS2546QRTERQ1 is a TI automotive-grade high-side load switch with integrated protection and status reporting. It is designed to protect and control a downstream power rail in automotive and consumer electronics.
Key points:
- High-side switch with enable input to turn the rail on/off
- Integrated current limit and overcurrent/short-circuit protection
- Reverse-current blocking to prevent backfeed when off
- Fault and current-limit/status reporting outputs
- Input range suitable for low-voltage systems (typical 2.7–5.5 V)
- Q1 automotive qualification and compact packaging
Typical uses:
- Powering microcontrollers, sensors, and other downstream circuitry
- USB-C power-switch and other protected rails
- Battery-powered devices and automotive modules
Summary:
TPS2546QRTERQ1 provides a compact, single-device solution to protect and switch a power rail, reducing design complexity by combining protection, control, and status signaling in one part.

TPS2546QRTERQ1 is TI’s automotive-grade high-side hot-swap switch with current limit and fault reporting. There isn’t an exact one-to-one cross-reference. Closest equivalents are automotive high-side switches from other vendors (Onsemi, ST, NXP, Renesas, Analog Devices) with similar voltage/current specs (e.g., Onsemi NCP/NCS series). To give precise equivalents, please share required input/output voltage, current, package, and automotive Q1 need, and I’ll provide cross references.

- Pin count: 16 pins (QFN package).
- Function: USB port power switch with protection. It gates VIN to VOUT to power a USB port, with enable control (EN), adjustable/current-limit protection (ILIM), soft‑start, and fault/status reporting. It also provides protections for short‑circuit, reverse current, over/undervoltage conditions.

- Manufacturer: Texas Instruments Incorporated (TI).
- What kind of company: TI is an American multinational semiconductor company that designs and manufactures analog and mixed-signal ICs, DSPs, microcontrollers, and power-management devices; one of the world’s largest chipmakers.

TPS2546QRTERQ1 is a single-channel, current-limited, fault-protected high-side load switch (automotive-grade). Common applications include:
- Power distribution with controlled turn-on/inrush for USB peripherals and consumer electronics
- Power gating and sequencing for microcontrollers/SoCs and sensors
- Battery-powered/portable devices needing inrush control and short-circuit protection
- Automotive and in-vehicle electronics requiring robust load switching (AEC-qualified)
- Industrial equipment needing reliable current protection and fault isolation
Concise and suitable for general use in power-switching roles.

8-pin WSON package (3×3 mm) with an exposed pad.