LTC7801EUFD#TRPBF

The LTC7801EUFD#TRPBF is a dual-channel, high‑voltage buck regulator controller from Linear Technology (now Analog Devices). It is used to build efficient DC‑DC converters with external MOSFETs, suitable for high-current, multi‑phase power rails.
Key points:
- Two independent controller channels drive external N‑channel MOSFETs in a synchronous buck topology.
- High input‑voltage operation (typical automotive/industrial ranges) and support for multiphase arrangements for high current.
- Features include current‑mode control, programmable switching frequency, soft‑start, dead‑time control, current limit, and protection functions (UVLO/thermal/OC).
- Designed for flexible architectures: single‑chip control of multiple phases or rails, with remote sensing as needed.
- Packaging: EUFD denotes the RoHS lead‑free package version; #TRPBF indicates Tape‑and‑Reel, Pb‑free packaging.
Usage: consult the datasheet for exact voltage ranges, frequency range, current limits, and recommended application circuits.

Here are the key features of LTC7801EUFD#TRPBF (high-level):
- High-voltage buck controller suitable for 100V class inputs (external MOSFETs) for high-efficiency step-down.
- Current-mode PWM control with slope compensation for stable, fast transient response.
- Programmable switching frequency via external resistor (adjustable/flexible design).
- Adjustable output voltage through feedback network with a precision reference.
- Soft-start to minimize inrush and output overshoot at startup.
- Enable input with undervoltage lockout for safe power sequencing.
- Overcurrent/short-circuit protection with current limit (and optional hiccup behavior).
- Overvoltage protection and robust fault protection.
- Thermal shutdown to prevent device damage (often with latch/power-on reset behavior).
- Remote sensing and robust protection options for precise regulation.
- RoHS-compliant, lead-free package suitable for tape-and-reel (EUFD/TRPBF).
Note: This is a concise feature summary; for exact electrical specs and pinout, please refer to the LTC7801EUFD datasheet.

- Pin count: 16 pins (LTC7801EUFD package).
- Function: High-voltage, single-channel PWM buck controller. It regulates a DC-DC buck converter by driving external MOSFETs (one high-side and one low-side) with current‑mode PWM, and includes features such as soft-start, enable/disable, undervoltage lockout, overcurrent protection, and fault/power‑good signaling.

Manufacturer: Analog Devices, Inc. (ADI), formerly Linear Technology Corporation.
What kind of company: A multinational American semiconductor company that designs and manufactures analog, mixed-signal, and digital signal processing integrated circuits.

LTC7801EUFD#TRPBF is a high‑current, multiphase buck controller. Applications include:
- CPU/GPU core power rails and other low‑voltage, high‑current supplies
- FPGA/ASIC power delivery and POL regulators
- Server/workstation, data‑center, and telecom/datacom power systems
- Industrial and embedded systems requiring fast transient response and high efficiency
- Any multiphase switching regulator using external MOSFETs for high‑level efficiency.

8‑lead MSOP (8‑pin Small Outline) package, Pb‑free, Tape & Reel (TRPBF).