LTC3728LXCUH#TRPBF

LTC3728LXCUH#TRPBF is a Linear Technology (now Analog Devices) multi-rail synchronous buck regulator controller. It drives external MOSFETs to generate multiple regulated output rails from a wide input range with high efficiency. Features typically include current‑mode control, programmable switching frequency, adjustable output voltages via feedback networks, soft-start, and protection features (overcurrent, thermal shutdown). The LXCUH identifies the package variant, and TRPBF denotes Tape & Reel Pb-free packaging. For exact specs (number of outputs, voltage ranges, frequency range, protections), refer to the LTC3728 datasheet on Analog Devices’ website.

Here are the key features of the LTC3728LXCUH#TRPBF (typical for this part family):
- Dual channel, synchronous switching regulator controller with high efficiency
- External N-channel MOSFET drive capability for each channel
- Current-mode control with fast transient response
- Programmable switching frequency (via external components) with fixed-frequency options
- Independent enable inputs and Power-Good outputs
- Overcurrent/short-circuit protection and cycle-by-cycle current limit
- Overvoltage/undervoltage protection and thermal shutdown
- Soft-start to limit inrush and output overshoot
- Programmable output voltage feedback with precise regulation
- Wide input voltage range to cover multiple supply rails
- Suitable for buck, boost/buck-boost configurations depending on topology
- Small Pb-free packaging (LXCUH), Tape-and-Reel (TRPBF)
Note: Exact electrical specs (range, currents, voltages, temp range) vary by device revision. Please consult the LTC3728 datasheet for precise numbers and application notes.

Pin count: 44 pins (LQFP-44 package for LTC3728LXCUH#TRPBF).
Function: Dual high‑voltage synchronous buck regulator controller. It provides two independent PWM control loops with gate-drive outputs for external MOSFETs to implement two buck converters from a higher input voltage, including protection features (OC, OVP, etc.) and programmable switching frequency.

Manufacturer: Analog Devices, Inc. (the LTC parts originate from Linear Technology, which was acquired by Analog Devices in 2017).
What kind of company: A multinational semiconductor company that designs and manufactures analog, mixed-signal, and DSP integrated circuits.

LTC3728LXCUH#TRPBF is a dual synchronous buck DC-DC controller. Typical application areas include:
- CPU/GPU core voltage regulation in desktops and servers
- Power rails for FPGAs, ASICs, DSPs and other high-performance ICs
- Point-of-load regulators on motherboards, telecom, and networking equipment
- Embedded and industrial DC-DC power supplies
- Multi-rail VRMs for data-center, server, and network hardware
These use cases leverage its dual-channel, multi-rail capability for high efficiency and fast transient response.

Package type: 32‑lead QFN (5x5 mm) with exposed pad. TRPBF indicates Tape & Reel, RoHS Pb‑free.