LT8705AEUHF#PBF

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LT8705AEUHF#PBF

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IC REG CTRLR BUCK-BOOST 38QFN

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Thông số kỹ thuật

thuộc tính Giá trị
Supplier Analog Devices Inc.
Package Tube
ProductStatus Active
OutputType Transistor Driver
Function Step-Up/Step-Down
OutputConfiguration Positive
Topology Buck-Boost
NumberofOutputs 2
OutputPhases 2
Voltage-Supply(Vcc/Vdd) 2.8V ~ 80V
Frequency-Switching 100kHz ~ 400kHz
SynchronousRectifier Yes
ClockSync Yes
ControlFeatures Enable, Frequency Control, Soft Start
OperatingTemperature -40°C ~ 125°C
MountingType Surface Mount
Package/Case 38-WFQFN Exposed Pad

Tổng quan

Description

LT8705AEUHF#PBF is a Linear Technology (now Analog Devices) DC-DC controller designed for buck, boost, or buck-boost conversions over a wide input range. It enables high efficiency with synchronous operation, uses current‑mode control, and offers programmable switching frequency, soft‑start, and comprehensive protection (overcurrent, UVLO, thermal, etc.). It is intended for non‑isolated automotive and industrial power supplies, typically with external MOSFETs. The #PBF suffix denotes RoHS-compliant, lead‑free packaging; EUHF specifies the package variant. For exact electrical specs, pinout, and recommended circuit configurations, consult the LT8705 datasheet.

Pinout

- Pin count: 28 pins (EUHF package, QFN commonly used for LT8705)
- Function: High-voltage four-switch buck-boost controller with external MOSFET gate drives and current-sense inputs; supports buck, boost, and buck-boost configurations (e.g., LED driver/automotive power applications) with current‑mode regulation and various control features.

Manufacturer

Analog Devices, Inc. (ADI). It is a multinational semiconductor company that designs and manufactures analog, mixed-signal, and DSP integrated circuits (including power-management ICs). The LT8705 originated from Linear Technology, which ADI acquired in 2017.

Application

LT8705AEUHF#PBF is a high-voltage buck-boost controller. Typical application areas include:
- Universal-input offline power supplies (buck/boost/buck-boost)
- Automotive and industrial DC-DC converters
- Constant-current LED lighting drivers (indoor/outdoor, signage)
- Battery charging and power-path management
- Renewable energy interfaces and energy-harvesting front ends (PV, standby power)
These cover wide Vin ranges and topologies for efficient, compact power solutions.

Package

The suffix #PBF indicates Pb-free RoHS. The EUHF package for LT8705AEUHF#PBF is a QFN-style 28-pin package (Pb-free).

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