LTC7801EFE#TRPBF

LTC7801EFE#TRPBF is a Linear Technology (Analog Devices) high‑voltage DC‑DC controller used to build buck regulators. It provides current‑mode PWM control that drives external N‑channel MOSFETs, with a wide input range suitable for automotive and industrial power supplies. Key features typically include programmable switching frequency, cycle‑by‑cycle current limit (with slope compensation), soft‑start, undervoltage lockout, thermal shutdown, and fault protections (OC/UV/OV). The #TRPBF suffix denotes Tape‑and‑Reel packaging with a lead‑free finish; EFE indicates the specific package/revision variant. Applications include point‑of‑load rails and automotive/industrial DC‑DC converters. For exact electrical specs and pinout, refer to the LTC7801 datasheet.

Direct equivalents (drop‑in) for LTC7801EFE#TRPBF do not exist. It’s a high‑voltage switching regulator controller; closest LTC cross‑references are LTC7800/LTC7802 families. Comparable non‑LTC parts include TI LM5170/LM5171, TI LM5140/LM5145, Analog Devices LT8705 (and related LT/ADI devices), and Monolithic Power Systems MP214x series. For exact cross‑reference, check distributor databases (Digi‑Key/Mouser) by package/pinout or contact Analog Devices.

LTC7801EFE#TRPBF features (concise):
- Wide input range: suitable for automotive/industrial use (4V–60V).
- PWM current‑mode control with external N‑channel MOSFETs for non‑isolated buck/boost topologies.
- Programmable switching frequency (up to about several hundred kHz) for compact magnetics and fast load response.
- Soft‑start and ramp compensation for controlled startup and low‑overshoot.
- External compensation network for stable, adjustable output regulation.
- Peak current limit with latch protection; overcurrent protection.
- UVLO/OVLO protection on input; enable/shutdown input available.
- Output regulation with external feedback divider; Power‑Good (status) signaling.
- Robust protections: thermal shutdown and safe‑start behavior.
- Packaging: Pb‑free, Tape & Reel (TRPBF); extended temperature range (-40°C to 125°C).
Note: Exact pinout and available options depend on package and revision. For precise specifications, refer to the official LTC7801 datasheet.

- Pin count: 8 pins (8-pin package, e.g., MSOP/SO-8 variant used for LTC7801EFE#TRPBF)
- Function: High‑voltage PWM controller for a buck (and buck/boost) switching regulator using external N‑channel MOSFETs. It provides current‑mode regulation with feedback (FB), compensation (COMP), soft‑start, enable/shutdown, current sense (IS), switch node (LX), input supply (VIN), and ground (GND).

- Manufacturer: Analog Devices, Inc. (ADI). The LTC7801EFE#TRPBF is a Linear Technology part now marketed under ADI after their 2017 acquisition.
- Company type: A multinational American semiconductor company specializing in analog, mixed-signal, and power-management integrated circuits.

Key application areas for LTC7801EFE#TRPBF:
- Automotive electronics: wide input range, high-efficiency DC-DC conversion for ECUs, infotainment, and sensors.
- Industrial/automation power: 24–72 VDC rails powering PLCs, drives, I/O modules.
- Telecom/network equipment: DC-48 V backplanes and point-of-load regulators.
- Renewable energy and energy storage: buck/boost-type regulation for solar/battery systems.
- Portable/battery-powered systems: compact, efficient DC-DC conversion with broad Vin range.

The LTC7801EFE#TRPBF comes in an 8‑lead MSOP (MSOP‑8) package, supplied on Tape & Reel Pb‑Free (TRPBF).