LTC3785EUF

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LTC3785EUF

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Especificações

Atributo Valor
Supplier Analog Devices Inc.
Package Tube
ProductStatus Obsolete
OutputType Transistor Driver
Function Step-Up/Step-Down
OutputConfiguration Positive
Topology Buck-Boost
NumberofOutputs 2
OutputPhases 1
Voltage-Supply(Vcc/Vdd) 2.7V ~ 10V
Frequency-Switching 100kHz ~ 1MHz
DutyCycle(Max) 99%
SynchronousRectifier Yes
ClockSync No
ControlFeatures Current Limit, Enable, Soft Start
OperatingTemperature -40°C ~ 85°C (TA)
MountingType Surface Mount
Package/Case 24-WFQFN Exposed Pad

Visão Geral

Description

The LTC3785EUF is a high‑voltage, wide‑input‑range buck/boost DC‑DC controller from Linear Technology (now Analog Devices) with integrated MOSFETs. It can regulate an output that is higher or lower than the input, making it suitable for automotive and battery‑powered applications. It uses current‑mode control, supports synchronous rectification, and offers a programmable switching frequency plus protection features such as overcurrent/short‑circuit, overvoltage, and thermal shutdown. The device is designed for efficiency and compact power‑supply designs that must operate over a broad input range (typical automotive/battery environments) and deliver several amperes of output. The “EUF” suffix denotes a RoHS‑compliant package variant (and typical leadframe/package family for this part).

Pinout

Pin count: 28 pins (EUF package).
Function: Dual-channel high-voltage buck regulator controller for interleaved multiphase DC‑DC converters; drives external MOSFETs to regulate a high input voltage (up to ~100 V) for VRMs, with current‑mode control, soft‑start, enable, and protection features.

Manufacturer

Manufacturer: Analog Devices. The LTC3785EUF originally comes from Linear Technology, which was acquired by Analog Devices in 2017.
What kind of company: Analog Devices is a multinational semiconductor company that designs and manufactures analog, mixed-signal, and DSP integrated circuits (an integrated device manufacturer with in-house fabrication).

Application

- Automotive wide-input DC-DC power supplies (12–48V systems)
- Telecom and data-center power rails
- Industrial/automation and embedded systems
- Multi-rail/multiphase buck regulators and POL supplies
- Battery charging and general power-management
- Solar and energy-storage DC-DC power electronics
These cover typical uses for the LTC3785EUF in high-efficiency, wide-input converters.

Package

LTC3785EUF is in a 28‑lead QFN package (4x4 mm), lead-free.

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