LTC3728LXCUH

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LTC3728LXCUH

IC REG CTRLR BUCK 32QFN

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仕様

Part Status Discontinued at DigiKey
Base Product Number LTC3728
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
Package 32-WFQFN Exposed Pad
Supplier Device Package 32-QFN (5x5)
Packaging Tube

概要

Description

LTC3728LXCUH is a Linear Technology (now Analog Devices) dual-channel, high-efficiency DC-DC regulator controller. It drives external N-channel MOSFETs to create low-voltage rails from a higher input, often used for processor cores, telecom, and automotive power systems.
Key points:
- Topology: dual synchronous buck regulator controller (requires external FETs; suitable for multiphase/interleaved operation for high current).
- Control and protections: current-mode PWM control, soft-start, enable/disable, overcurrent/short-circuit protection, undervoltage lockout, thermal protection.
- Features: programmable switching frequency and good transient response; designed for high efficiency across wide operating conditions.
- Packaging: LXCUH denotes the specific package and temperature grade; exact pinout and package details are in the datasheet.
- Typical use: regulators for CPU/core rails, telecom power modules, and automotive DC-DC conversions.
For precise specifications (VIN/VOUT ranges, current capability, exact package dimensions), consult the LTC3728 datasheet and product fiches on Analog Devices’ website.

Package

LTC3728LXCUH uses a 16‑lead QFN package (4 mm × 4 mm), Pb‑free/RoHS compliant.

Pinout

- Pin count: 28 pins (LXCUH package).
- Function: Dual synchronous buck regulator controller with two PWM channels and gate-drive outputs for external MOSFETs, intended for multi-rail VRM applications (provides current-mode control, protection features, and adjustable switching frequency).

Manufacturer

Manufacturer: Analog Devices (the LTC prefix comes from Linear Technology, which Analog Devices acquired).
What kind of company: A semiconductor company that designs and manufactures analog, mixed-signal, and power-management integrated circuits.

Application

Applications of LTC3728LXCUH (wide-input DC–DC buck–boost controller) include:
- Automotive power electronics (ECUs, infotainment)
- Battery-powered portable devices
- Industrial/control and telecom power supplies
- Solar energy/battery charging and regulation
- Distributed power rails and back-up supply modules

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出荷料参照（DHL/FedEx）:

DHL の: 配送費は25ドル〜45ドル（0.5kg）の範囲で、推定配送時間は2〜5営業日です。

フェデックス: 配送費は25ドル〜40ドル（0.5kg）の範囲で、推定配送時間は3〜7営業日。

UPS の: 配送費は25ドル〜45ドル（0.5kg）の範囲で、推定配送時間は3〜7営業日。

TNT社: 配送費は25ドル〜65ドル（0.5kg）の範囲で、推定配送時間は3〜7営業日。

EMS: 配送料金は30〜50ドル（0.5kg）の範囲で、推定配送時間は7〜15営業日です。

登録航空郵便: 配送費は2〜4ドル（0.1kg）で、推定配送時間は5〜20営業日です。

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