사양
| 속성 | 가치 |
| Supplier | Analog Devices Inc. |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| Output Type | Transistor Driver |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Number of Outputs | 2 |
| Output Phases | 2 |
| Voltage - Supply (Vcc/Vdd) | 4.5V ~ 28V |
| Frequency - Switching | 260kHz ~ 550kHz |
| Duty Cycle(Max) | 99.4% |
| Synchronous Rectifier | Yes |
| Clock Sync | No |
| Control Features | Enable, Power Good, Soft Start |
| Operating Temperature | 0°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
개요
Description
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.
Features
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.
- 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.
Pinout
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.
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
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.
What kind of company: A multinational semiconductor company that designs and manufactures analog, mixed-signal, and DSP integrated circuits.
Application
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.
- 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
Package type: 32‑lead QFN (5x5 mm) with exposed pad. TRPBF indicates Tape & Reel, RoHS Pb‑free.
