LTC3789EGN#PBF

LTC3789EGN#PBF is a high‑voltage, dual‑channel, multiphase DC‑DC controller from Linear Technology (now Analog Devices). It’s intended for buck, boost, or buck‑boost converter topologies using external N‑channel MOSFETs to deliver high current with high efficiency (input up to ~60 V, suitable for multi‑phase regulators).
Key features:
- Two phase‑interleaved, current‑mode PWM controllers for high current and good transient response
- Programmable switching frequency and dead‑time
- Programmable output voltage via feedback network; current limit and various protections (UVLO/OVLO, overcurrent, thermal shutdown)
- Soft‑start, ramp control, and optional remote sensing
- Synchronization capability and fault protection
Package suffix EGN refers to a specific package variant, and PBF indicates Pb‑free, RoHS‑compliant. Typical applications include CPU/GPU core rails, telecom, and automotive DC‑DC power systems demanding high current and efficiency.

Here are the key features of LTC3789EGN#PBF (datasheet summary):
- Dual high-performance buck-boost controller with integrated MOSFETs (two channels).
- Wide input voltage range suitable for automotive/industrial applications.
- Interleaved/multi-phase operation for high current and low ripple.
- Programmable switching frequency with options for fixed or spread-spectrum operation.
- Current-mode PWM control with slope compensation for stability and fast transient response.
- Programmable soft-start, output tracking, and adjustable compensation for loop stability.
- Independent regulation with VIN/VO sense, remote sense capability.
- Fault protection: overcurrent/short-circuit, overvoltage, UVLO, and thermal shutdown (with latch/diagnostics).
- Power good signaling and fault reporting.
- Enable/disable control and fault-hold-off features.
- Protection features include hiccup/auto-retry on fault, input undervoltage, and thermal protection.
- Pb-free/lead-free packaging (PBF) and wide temperature range.
- Suitable for buck, boost, or buck-boost topologies with high efficiency.
Note: For exact voltage ranges, pinout, and programming details, consult the LTC3789 datasheet.

LTC3789EGN#PBF comes in a 28‑pin QFN package (5 x 6 mm), RoHS compliant lead‑free version.

Pin count: 28 pins.
Function: LTC3789EGN#PBF is a dual high-voltage switching regulator controller (buck-boost/DC-DC). It provides two PWM-controlled switching channels with current-mode control and gate-drive outputs, suitable for buck, boost, or buck-boost configurations. It includes voltage and current feedback, protection features, and is used to regulate high-voltage input to multiple lower-voltage rails.

Manufacturer: Analog Devices, Inc. (ADI). LTC3789EGN#PBF was originally from Linear Technology, which Analog Devices acquired in 2017, and the LTC prefix reflects that lineage.
What kind of company: Analog Devices is a multinational American semiconductor company that designs and manufactures analog, mixed-signal, and digital signal processing integrated circuits.

High-voltage DC–DC controller for multi-output, multiphase power supplies. Applications include:
- CPU/GPU VRMs and other high-current, point-of-load converters
- Server/data-center power supplies
- Telecom/network equipment
- Industrial automation and motor-control power stages
- Automotive and battery-powered systems requiring efficient DC–DC conversion